App Install

Measure app installation speed. This scenario has two roles:

  • minimal: Installs a simple app which implements initialisation callbacks but otherwise doesn't contain a lot of code.
  • large: Installs a larger app that contains some dependencies and some generated data as padding to make the bundle larger.

These are intended to catch a compilation slowdown or issues with copying around large WASMs (e.g. accidental cloning or tracing). In each case, the behaviour will uninstall the app it installed so that it can re-install it on the next iteration.

Started
Thu, 26 Mar 2026 01:12:40 UTC
Peer count
1
Peer count at end
1
Behaviours
  • minimal (1 agent)
Holochain version
0.6.1-rc.3
Wind Tunnel version
0.6.0
Run ID
app_install_minimal_23571925523
First install time
The time from conductor startup to completion of the first app installation attempt.
1.125722531s
Install app timing
The time taken to install an app.
mean 0.509613s (SD = 0.315282s) p50 0.407797s p95 1.202757s p99 1.270551s
Host Metrics
User CPU usage
CPU usage by user space
8.85%
Network receive rate (primary)
Rate of bytes received on primary network interface
p5 266 B/s < mean 320.10 KiB/s (SD = 821.82 KiB/s) < p952.79 MiB/s
Network send rate (primary)
Rate of bytes sent on primary network interface
p5 1.01 KiB/s < mean 29.85 KiB/s (SD = 31.51 KiB/s) < p9591.14 KiB/s
Total bytes received
Total bytes received on primary network interface
count
96.91 MiB
mean
320.10 KiB/s
Total bytes sent
Total bytes sent on primary network interface
count
9.04 MiB
mean
29.85 KiB/s
CPU spike anomaly
CPU spike anomaly was detected
NotDetected
Memory leak anomaly
Memory leak anomaly was detected
Detected

Warning Memory growing at 724.62 MB/s

Disk full anomaly
Disk full anomaly was detected
NotDetected
Swap thrashing anomaly
Swap thrashing anomaly was detected
NotDetected
System overload anomaly
System overload anomaly was detected
NotDetected
Additional Host Metrics
Hidden by default. Click to toggle visibility.
CPU usage
Total CPU usage and kernel CPU usage
Total
p5 3.83% < mean 11.61% (SD = 11.48%) < p95 53.66%
System
2.76%
CPU percentiles
CPU usage percentiles
p50
9.05%
p95
53.66%
p99
54.09%
CPU usage above 80%
Number of hosts above 80% CPU and mean time spent above threshold for those hosts
count
0 hosts
mean time
0.00s
Memory used percentage
Percentage of memory used
p5 16.55% < mean 21.23% (SD = 4.18%) < p95 27.78%
Memory available percentage
Percentage of available memory
p5 72.22% < mean 78.77% (SD = 4.18%) < p95 83.45%
Max host memory used
Maximum memory usage percentage across all hosts
max 21.23%
Max host swap used percentage
Maximum swap space usage percentage across all hosts
max 0.00%
Memory growth rate
Rate of memory growth over time
growth 724.62MB/s
Disk read throughput
Disk read throughput in MB/s
0.00MB/s
Disk write throughput
Disk write throughput in MB/s
4.54MB/s
Disk space utilization risk
Number of hosts nearing disk space capacity by mount point
Mount Point /
0/1hosts
Mount Point /efi-boot
0/1hosts
Mount Point /nix/store
0/1hosts
System load average
System load averages over 1, 5, and 15 minutes. This is an unnormalised value not divided by number of CPUs, so it is only meaningful if all machines have the same core count.
1 min
2.13
5 min
1.23
15 min
0.68
CPU overloaded hosts
Percentage of hosts that experienced CPU overload
0.00%
CPU pressure
CPU pressure over 10, 60, and 300 second averages
10 second average
p5 0% < mean 0.5188% (SD = 0.7358%) < p95 1.52%
60 second average
0.4997%
300 second average
0.5006%
Memory pressure some
Memory pressure (some tasks stalled) over 10, 60, and 300 second averages
10 second average
p5 0% ≤ mean 0% (SD = 0%) ≤ p95 0%
60 second average
0.0000%
300 second average
0.0000%
Memory pressure full
Memory pressure (all tasks stalled) over 10, 60, and 300 second averages
10 second average
p5 0% ≤ mean 0% (SD = 0%) ≤ p95 0%
60 second average
0.0000%
300 second average
0.0000%
I/O pressure some
I/O pressure (some tasks stalled) over 10, 60 and 300 second averages
10 second average
p5 7.86% < mean 40.5444% (SD = 12.9635%) < p95 51.98%
60 second average
33.9088%
300 second average
16.3641%
I/O pressure full
I/O pressure (all tasks stalled) over 10, 60 and 300 second averages
10 second average
p5 7.11% < mean 37.9344% (SD = 12.5719%) < p95 49.87%
60 second average
31.8006%
300 second average
15.3681%
Holochain process CPU usage
CPU usage by Holochain process
p5 1.72% < mean 6.85% (SD = 11.52%) < p95 49.71%
Holochain process memory (PSS)
Proportional Set Size memory of Holochain process
p5 87.71 KiB < mean 455.14 KiB (SD = 273.45 KiB) < p95945.14 KiB
Holochain process threads
Number of threads in Holochain process
p5 9 threads < mean 20.18 threads (SD = 4.94 threads) < p95 26 threads
Holochain process file descriptors
Number of file descriptors used by Holochain process
p5 11 file descriptors < mean 189.79 file descriptors (SD = 124.18 file descriptors) < p95 419 file descriptors

App Install

Measure app installation speed. This scenario has two roles:

  • minimal: Installs a simple app which implements initialisation callbacks but otherwise doesn't contain a lot of code.
  • large: Installs a larger app that contains some dependencies and some generated data as padding to make the bundle larger.

These are intended to catch a compilation slowdown or issues with copying around large WASMs (e.g. accidental cloning or tracing). In each case, the behaviour will uninstall the app it installed so that it can re-install it on the next iteration.

Started
Thu, 26 Mar 2026 01:10:37 UTC
Peer count
1
Peer count at end
1
Behaviours
  • large (1 agent)
Holochain version
0.6.1-rc.3
Wind Tunnel version
0.6.0
Run ID
app_install_large_23571925523
First install time
The time from conductor startup to completion of the first app installation attempt.
0.356460151s
Install app timing
The time taken to install an app.
mean 0.172959s (SD = 0.035065s) p50 0.170197s p95 0.231321s p99 0.251068s
Host Metrics
User CPU usage
CPU usage by user space
30.19%
Network receive rate (primary)
Rate of bytes received on primary network interface
p5 339 B/s < mean 465.06 KiB/s (SD = 1.38 MiB/s) < p954.82 MiB/s
Network send rate (primary)
Rate of bytes sent on primary network interface
p5 17 B/s < mean 14.65 KiB/s (SD = 26.62 KiB/s) < p9596.73 KiB/s
Total bytes received
Total bytes received on primary network interface
count
49.96 MiB
mean
465.06 KiB/s
Total bytes sent
Total bytes sent on primary network interface
count
1.57 MiB
mean
14.65 KiB/s
CPU spike anomaly
CPU spike anomaly was detected
NotDetected
Memory leak anomaly
Memory leak anomaly was detected
Detected

Warning Memory growing at 1899.55 MB/s

Disk full anomaly
Disk full anomaly was detected
NotDetected
Swap thrashing anomaly
Swap thrashing anomaly was detected
NotDetected
System overload anomaly
System overload anomaly was detected
NotDetected
Additional Host Metrics
Hidden by default. Click to toggle visibility.
CPU usage
Total CPU usage and kernel CPU usage
Total
p5 10.06% < mean 37.54% (SD = 17.99%) < p95 74.75%
System
7.35%
CPU percentiles
CPU usage percentiles
p50
33.25%
p95
74.75%
p99
74.75%
CPU usage above 80%
Number of hosts above 80% CPU and mean time spent above threshold for those hosts
count
0 hosts
mean time
0.00s
Memory used percentage
Percentage of memory used
p5 18.72% < mean 25.2% (SD = 4.72%) < p95 34.01%
Memory available percentage
Percentage of available memory
p5 65.99% < mean 74.8% (SD = 4.72%) < p95 81.28%
Max host memory used
Maximum memory usage percentage across all hosts
max 25.20%
Max host swap used percentage
Maximum swap space usage percentage across all hosts
max 0.03%
Memory growth rate
Rate of memory growth over time
growth 1899.55MB/s
Disk read throughput
Disk read throughput in MB/s
0.00MB/s
Disk write throughput
Disk write throughput in MB/s
9.36MB/s
Disk space utilization risk
Number of hosts nearing disk space capacity by mount point
Mount Point /etc/hostname
0/1hosts
Mount Point /etc/hosts
0/1hosts
Mount Point /etc/resolv.conf
0/1hosts
System load average
System load averages over 1, 5, and 15 minutes. This is an unnormalised value not divided by number of CPUs, so it is only meaningful if all machines have the same core count.
1 min
0.90
5 min
0.35
15 min
0.27
CPU overloaded hosts
Percentage of hosts that experienced CPU overload
0.00%
CPU pressure
CPU pressure over 10, 60, and 300 second averages
10 second average
p5 0.54% < mean 2.8358% (SD = 1.7667%) < p95 6.08%
60 second average
1.9967%
300 second average
0.6517%
Memory pressure some
Memory pressure (some tasks stalled) over 10, 60, and 300 second averages
10 second average
p5 0% ≤ mean 0% (SD = 0%) ≤ p95 0%
60 second average
0.0000%
300 second average
0.0000%
Memory pressure full
Memory pressure (all tasks stalled) over 10, 60, and 300 second averages
10 second average
p5 0% ≤ mean 0% (SD = 0%) ≤ p95 0%
60 second average
0.0000%
300 second average
0.0000%
I/O pressure some
I/O pressure (some tasks stalled) over 10, 60 and 300 second averages
10 second average
p5 0% < mean 0.1742% (SD = 0.1814%) < p95 0.64%
60 second average
0.0950%
300 second average
0.0233%
I/O pressure full
I/O pressure (all tasks stalled) over 10, 60 and 300 second averages
10 second average
p5 0% < mean 0.1742% (SD = 0.1814%) < p95 0.64%
60 second average
0.0950%
300 second average
0.0233%
Holochain process CPU usage
CPU usage by Holochain process
p5 0% < mean 23.37% (SD = 16.61%) < p95 65.82%
Holochain process memory (PSS)
Proportional Set Size memory of Holochain process
p5 182.62 KiB < mean 939.96 KiB (SD = 517.66 KiB) < p951.81 MiB
Holochain process threads
Number of threads in Holochain process
p5 1 threads < mean 15.92 threads (SD = 6.68 threads) < p95 19 threads
Holochain process file descriptors
Number of file descriptors used by Holochain process
p5 0 file descriptors < mean 535.17 file descriptors (SD = 414.44 file descriptors) < p95 1054 file descriptors

First Call

This scenario installs a simple app which implements the init callback, and measures the time elapsed between start of install and calling init. It will uninstall the app it installed so that it can re-install it on the next iteration. This is required to re-run the initialisation callback.

Started
Thu, 26 Mar 2026 00:53:21 UTC
Peer count
1
Peer count at end
1
Behaviours
  • default (1 agent)
Holochain version
0.6.1-rc.3
Wind Tunnel version
0.6.0
Run ID
first_call_23571925523
Zome call timing
The time elapsed between start of install and calling init.
mean 0.01863s (SD = 0.040683s) p50 0.009902s p95 0.022966s p99 0.244487s
Host Metrics
User CPU usage
CPU usage by user space
10.17%
Network receive rate (primary)
Rate of bytes received on primary network interface
p5 17.36 KiB/s < mean 29.64 KiB/s (SD = 6.01 KiB/s) < p9536.39 KiB/s
Network send rate (primary)
Rate of bytes sent on primary network interface
p5 7.52 KiB/s < mean 11.11 KiB/s (SD = 2.00 KiB/s) < p9513.26 KiB/s
Total bytes received
Total bytes received on primary network interface
count
8.40 MiB
mean
29.64 KiB/s
Total bytes sent
Total bytes sent on primary network interface
count
3.15 MiB
mean
11.11 KiB/s
CPU spike anomaly
CPU spike anomaly was detected
NotDetected
Memory leak anomaly
Memory leak anomaly was detected
Detected

Warning Memory growing at 1191.91 MB/s

Disk full anomaly
Disk full anomaly was detected
NotDetected
Swap thrashing anomaly
Swap thrashing anomaly was detected
NotDetected
System overload anomaly
System overload anomaly was detected
NotDetected
Additional Host Metrics
Hidden by default. Click to toggle visibility.
CPU usage
Total CPU usage and kernel CPU usage
Total
p5 9.3% < mean 12.77% (SD = 7.85%) < p95 15.16%
System
2.59%
CPU percentiles
CPU usage percentiles
p50
11.19%
p95
15.16%
p99
53.76%
CPU usage above 80%
Number of hosts above 80% CPU and mean time spent above threshold for those hosts
count
0 hosts
mean time
0.00s
Memory used percentage
Percentage of memory used
p5 12.18% < mean 18.59% (SD = 4.38%) < p95 25.41%
Memory available percentage
Percentage of available memory
p5 74.59% < mean 81.41% (SD = 4.38%) < p95 87.82%
Max host memory used
Maximum memory usage percentage across all hosts
max 18.59%
Max host swap used percentage
Maximum swap space usage percentage across all hosts
max 0.00%
Memory growth rate
Rate of memory growth over time
growth 1191.91MB/s
Disk read throughput
Disk read throughput in MB/s
0.00MB/s
Disk write throughput
Disk write throughput in MB/s
3.57MB/s
Disk space utilization risk
Number of hosts nearing disk space capacity by mount point
Mount Point /
0/1hosts
Mount Point /nix/store
0/1hosts
System load average
System load averages over 1, 5, and 15 minutes. This is an unnormalised value not divided by number of CPUs, so it is only meaningful if all machines have the same core count.
1 min
1.51
5 min
0.72
15 min
0.28
CPU overloaded hosts
Percentage of hosts that experienced CPU overload
0.00%
CPU pressure
CPU pressure over 10, 60, and 300 second averages
10 second average
p5 0.12% < mean 0.3533% (SD = 0.151%) < p95 0.61%
60 second average
0.3080%
300 second average
0.1437%
Memory pressure some
Memory pressure (some tasks stalled) over 10, 60, and 300 second averages
10 second average
p5 0% ≤ mean 0% (SD = 0%) ≤ p95 0%
60 second average
0.0000%
300 second average
0.0000%
Memory pressure full
Memory pressure (all tasks stalled) over 10, 60, and 300 second averages
10 second average
p5 0% ≤ mean 0% (SD = 0%) ≤ p95 0%
60 second average
0.0000%
300 second average
0.0000%
I/O pressure some
I/O pressure (some tasks stalled) over 10, 60 and 300 second averages
10 second average
p5 7.57% < mean 33.046% (SD = 8.1596%) < p95 41.07%
60 second average
27.2823%
300 second average
12.6310%
I/O pressure full
I/O pressure (all tasks stalled) over 10, 60 and 300 second averages
10 second average
p5 7.45% < mean 32.395% (SD = 8.0285%) < p95 40.71%
60 second average
26.7393%
300 second average
12.3767%
Holochain process CPU usage
CPU usage by Holochain process
p5 7.97% < mean 11.48% (SD = 7.93%) < p95 13.8%
Holochain process memory (PSS)
Proportional Set Size memory of Holochain process
p5 267.84 KiB < mean 835.44 KiB (SD = 364.64 KiB) < p951.34 MiB
Holochain process threads
Number of threads in Holochain process
p5 17 threads < mean 18.8 threads (SD = 2.33 threads) < p95 21 threads
Holochain process file descriptors
Number of file descriptors used by Holochain process
p5 73 file descriptors < mean 534.27 file descriptors (SD = 170.42 file descriptors) < p95 644 file descriptors

Local Signals

This scenario is for testing the speed and reliability of local signals. It uses a zome with a function that will emit 10,000 signals. The scenario measures how long it takes to send the signals and how many have been received by the time the zome call ends.

Started
Thu, 26 Mar 2026 00:55:09 UTC
Peer count
1
Peer count at end
1
Behaviours
  • default (1 agent)
Holochain version
0.6.1-rc.3
Wind Tunnel version
0.6.0
Run ID
local_signals_23571925523
Send timing
The time taken to emit a batch of 10,000 signals.
mean 1.853219s (SD = 0.887364s) p50 2.051005s p95 3.092068s p99 3.092068s
Receive timing
The time taken to receive the completed batch, to the nearest 250ms.
mean 27.159087s (SD = 8.526651s) p50 30.001363s p95 30.00185s p99 30.00185s
Success ratio
The proportion of signals successfully received in a batch.
min 0.8881000280380249 < mean 0.9383 (SD = 0.0257) < max 0.9725000262260436
Host Metrics
User CPU usage
CPU usage by user space
12.34%
Network receive rate (primary)
Rate of bytes received on primary network interface
p5 6.76 KiB/s < mean 30.94 KiB/s (SD = 104.20 KiB/s) ≤ p9517.30 KiB/s
Network send rate (primary)
Rate of bytes sent on primary network interface
p5 5.26 KiB/s < mean 9.27 KiB/s (SD = 3.85 KiB/s) < p9513.14 KiB/s
Total bytes received
Total bytes received on primary network interface
count
9.06 MiB
mean
30.94 KiB/s
Total bytes sent
Total bytes sent on primary network interface
count
2.71 MiB
mean
9.27 KiB/s
CPU spike anomaly
CPU spike anomaly was detected
NotDetected
Memory leak anomaly
Memory leak anomaly was detected
Detected

Warning Memory growing at 38.83 MB/s

Disk full anomaly
Disk full anomaly was detected
NotDetected
Swap thrashing anomaly
Swap thrashing anomaly was detected
Detected

Critical Heavy swap usage (95.0% swap used)

System overload anomaly
System overload anomaly was detected
NotDetected
Additional Host Metrics
Hidden by default. Click to toggle visibility.
CPU usage
Total CPU usage and kernel CPU usage
Total
p5 14.47% < mean 20.48% (SD = 8.89%) < p95 33.76%
System
8.14%
CPU percentiles
CPU usage percentiles
p50
15.62%
p95
33.76%
p99
57.26%
CPU usage above 80%
Number of hosts above 80% CPU and mean time spent above threshold for those hosts
count
0 hosts
mean time
0.00s
Memory used percentage
Percentage of memory used
p5 64.86% < mean 65.75% (SD = 0.49%) < p95 66.02%
Memory available percentage
Percentage of available memory
p5 33.98% < mean 34.25% (SD = 0.49%) < p95 35.14%
Max host memory used
Maximum memory usage percentage across all hosts
max 65.75%
Max host swap used percentage
Maximum swap space usage percentage across all hosts
max 94.99%
Memory growth rate
Rate of memory growth over time
growth 38.83MB/s
Disk read throughput
Disk read throughput in MB/s
0.00MB/s
Disk write throughput
Disk write throughput in MB/s
1.21MB/s
Disk space utilization risk
Number of hosts nearing disk space capacity by mount point
Mount Point /etc/hostname
0/1hosts
Mount Point /etc/hosts
0/1hosts
Mount Point /etc/resolv.conf
0/1hosts
System load average
System load averages over 1, 5, and 15 minutes. This is an unnormalised value not divided by number of CPUs, so it is only meaningful if all machines have the same core count.
1 min
1.33
5 min
1.00
15 min
0.90
CPU overloaded hosts
Percentage of hosts that experienced CPU overload
0.00%
CPU pressure
CPU pressure over 10, 60, and 300 second averages
10 second average
p5 2.45% < mean 4.9977% (SD = 2.7218%) < p95 10.55%
60 second average
4.2432%
300 second average
2.9629%
Memory pressure some
Memory pressure (some tasks stalled) over 10, 60, and 300 second averages
10 second average
p5 0% ≤ mean 0% (SD = 0%) ≤ p95 0%
60 second average
0.0000%
300 second average
0.0000%
Memory pressure full
Memory pressure (all tasks stalled) over 10, 60, and 300 second averages
10 second average
p5 0% ≤ mean 0% (SD = 0%) ≤ p95 0%
60 second average
0.0000%
300 second average
0.0000%
I/O pressure some
I/O pressure (some tasks stalled) over 10, 60 and 300 second averages
10 second average
p5 0.34% < mean 1.2806% (SD = 1.3561%) < p95 5.19%
60 second average
1.5003%
300 second average
1.1997%
I/O pressure full
I/O pressure (all tasks stalled) over 10, 60 and 300 second averages
10 second average
p5 0.19% < mean 1.0219% (SD = 1.1293%) < p95 4.38%
60 second average
1.2177%
300 second average
0.9842%
Holochain process CPU usage
CPU usage by Holochain process
p5 0.22% < mean 0.77% (SD = 1.59%) < p95 1.1%
Holochain process memory (PSS)
Proportional Set Size memory of Holochain process
p5 259.63 KiB ≤ mean 257.73 KiB (SD = 20.15 KiB) < p95262.94 KiB
Holochain process threads
Number of threads in Holochain process
p5 12 threads ≤ mean 11.77 threads (SD = 2.09 threads) < p95 12 threads
Holochain process file descriptors
Number of file descriptors used by Holochain process
p5 49 file descriptors < mean 52.16 file descriptors (SD = 13.07 file descriptors) < p95 72 file descriptors

Remote Call Rate

Test the throughput of remote_call operations. Each agent in this scenario waits for a certain number of peers to be available or for up to two minutes, whichever happens first, before starting its behaviour.

Started
Thu, 26 Mar 2026 00:57:07 UTC
Peer count
10
Peer count at end
10
Behaviours
  • default (1 agent)
Holochain version
0.6.1-rc.3
Wind Tunnel version
0.6.0
Run ID
remote_call_rate_23571925523
Dispatch timing
The time between sending a remote call and the remote handler being invoked.
Mean
mean 0.054346s (SD = 0.080149s)
Max
Highest per-partition mean latency
max mean 0.125829s
Min
Lowest per-partition mean latency
min mean 0.035019s
Round-trip timing
The total elapsed time to get a response to the client.
Mean
mean 0.104755s (SD = 0.105009s)
Max
Highest per-partition mean latency
max mean 0.166496s
Min
Lowest per-partition mean latency
min mean 0.083282s
Host Metrics
User CPU usage
CPU usage by user space
7.38%
Network receive rate (primary)
Rate of bytes received on primary network interface
p5 11.99 KiB/s < mean 85.59 KiB/s (SD = 477.46 KiB/s) ≤ p9535.96 KiB/s
Network send rate (primary)
Rate of bytes sent on primary network interface
p5 11.94 KiB/s < mean 21.68 KiB/s (SD = 12.84 KiB/s) < p9537.23 KiB/s
Total bytes received
Total bytes received on primary network interface
count
758.14 MiB
mean
825.89 KiB/s
Total bytes sent
Total bytes sent on primary network interface
count
192.01 MiB
mean
209.17 KiB/s
CPU spike anomaly
CPU spike anomaly was detected
NotDetected
Memory leak anomaly
Memory leak anomaly was detected
Detected

Warning Memory growing at 717.31 MB/s

Disk full anomaly
Disk full anomaly was detected
NotDetected
Swap thrashing anomaly
Swap thrashing anomaly was detected
NotDetected
System overload anomaly
System overload anomaly was detected
NotDetected
Additional Host Metrics
Hidden by default. Click to toggle visibility.
CPU usage
Total CPU usage and kernel CPU usage
Total
p5 2.81% < mean 11.29% (SD = 9.6%) < p95 27.14%
System
3.91%
CPU percentiles
CPU usage percentiles
p50
6.98%
p95
27.14%
p99
51.93%
CPU usage above 80%
Number of hosts above 80% CPU and mean time spent above threshold for those hosts
count
1 hosts
mean time
0.01s
Memory used percentage
Percentage of memory used
p5 5.9% < mean 15.63% (SD = 11.14%) < p95 48.11%
Memory available percentage
Percentage of available memory
p5 51.89% < mean 84.37% (SD = 11.14%) < p95 94.1%
Max host memory used
Maximum memory usage percentage across all hosts
max 48.01%
Max host swap used percentage
Maximum swap space usage percentage across all hosts
max 1.01%
Memory growth rate
Rate of memory growth over time
growth 717.31MB/s
Disk read throughput
Disk read throughput in MB/s
0.91MB/s
Disk write throughput
Disk write throughput in MB/s
19.16MB/s
Disk space utilization risk
Number of hosts nearing disk space capacity by mount point
Mount Point /
0/6hosts
Mount Point /efi-boot
0/5hosts
Mount Point /etc/hostname
0/3hosts
Mount Point /etc/hosts
0/3hosts
Mount Point /etc/resolv.conf
0/3hosts
Mount Point /nix/store
0/6hosts
System load average
System load averages over 1, 5, and 15 minutes. This is an unnormalised value not divided by number of CPUs, so it is only meaningful if all machines have the same core count.
1 min
0.57
5 min
0.42
15 min
0.24
CPU overloaded hosts
Percentage of hosts that experienced CPU overload
0.00%
CPU pressure
CPU pressure over 10, 60, and 300 second averages
10 second average
p5 0% < mean 0.7673% (SD = 1.7182%) < p95 2.79%
60 second average
0.7444%
300 second average
0.5666%
Memory pressure some
Memory pressure (some tasks stalled) over 10, 60, and 300 second averages
10 second average
p5 0% ≤ mean 0% (SD = 0%) ≤ p95 0%
60 second average
0.0000%
300 second average
0.0000%
Memory pressure full
Memory pressure (all tasks stalled) over 10, 60, and 300 second averages
10 second average
p5 0% ≤ mean 0% (SD = 0%) ≤ p95 0%
60 second average
0.0000%
300 second average
0.0000%
I/O pressure some
I/O pressure (some tasks stalled) over 10, 60 and 300 second averages
10 second average
p5 0% < mean 1.9966% (SD = 4.4688%) < p95 8.23%
60 second average
1.8266%
300 second average
1.2389%
I/O pressure full
I/O pressure (all tasks stalled) over 10, 60 and 300 second averages
10 second average
p5 0% < mean 1.8411% (SD = 4.0821%) < p95 7.56%
60 second average
1.6830%
300 second average
1.1462%
Holochain process CPU usage
CPU usage by Holochain process
p5 0% < mean 5.91% (SD = 6.7%) < p95 22.35%
Holochain process memory (PSS)
Proportional Set Size memory of Holochain process
p5 174.92 KiB < mean 218.56 KiB (SD = 51.96 KiB) < p95253.20 KiB
Holochain process threads
Number of threads in Holochain process
p5 1 threads < mean 17.64 threads (SD = 6.9 threads) < p95 28 threads
Holochain process file descriptors
Number of file descriptors used by Holochain process
p5 0 file descriptors < mean 53.87 file descriptors (SD = 21.37 file descriptors) < p95 84 file descriptors

Remote Signals

This scenario tests the throughput of remote_signals operations.

Started
Thu, 26 Mar 2026 00:58:59 UTC
Peer count
10
Peer count at end
10
Behaviours
  • default (1 agent)
Holochain version
0.6.1-rc.3
Wind Tunnel version
0.6.0
Run ID
remote_signals_23571925523
Round trip time
The time from origin signal dispatch to origin receive of the remote side's response signal.
mean 0.120191s (SD = 0.227183s) p50 0.114787s p95 0.213933s p99 0.276457s
Timeouts
The number of timeouts waiting for the remote side's response signal (default timeout is 20 seconds).
0
Host Metrics
User CPU usage
CPU usage by user space
3.40%
Network receive rate (primary)
Rate of bytes received on primary network interface
p5 4.74 KiB/s < mean 42.95 KiB/s (SD = 274.14 KiB/s) ≤ p9528.17 KiB/s
Network send rate (primary)
Rate of bytes sent on primary network interface
p5 4.46 KiB/s < mean 15.92 KiB/s (SD = 13.13 KiB/s) < p9530.76 KiB/s
Total bytes received
Total bytes received on primary network interface
count
188.32 MiB
mean
211.91 KiB/s
Total bytes sent
Total bytes sent on primary network interface
count
69.80 MiB
mean
78.54 KiB/s
CPU spike anomaly
CPU spike anomaly was detected
NotDetected
Memory leak anomaly
Memory leak anomaly was detected
Detected

Warning Memory growing at 92.99 MB/s

Disk full anomaly
Disk full anomaly was detected
NotDetected
Swap thrashing anomaly
Swap thrashing anomaly was detected
Detected

Warning Moderate swap usage (17.7% swap used)

System overload anomaly
System overload anomaly was detected
NotDetected
Additional Host Metrics
Hidden by default. Click to toggle visibility.
CPU usage
Total CPU usage and kernel CPU usage
Total
p5 1.38% < mean 5.25% (SD = 8.42%) < p95 11.63%
System
1.85%
CPU percentiles
CPU usage percentiles
p50
2.80%
p95
11.63%
p99
54.01%
CPU usage above 80%
Number of hosts above 80% CPU and mean time spent above threshold for those hosts
count
1 hosts
mean time
0.01s
Memory used percentage
Percentage of memory used
p5 6.91% < mean 22.96% (SD = 13.92%) < p95 44.39%
Memory available percentage
Percentage of available memory
p5 55.61% < mean 77.04% (SD = 13.92%) < p95 93.09%
Max host memory used
Maximum memory usage percentage across all hosts
max 44.15%
Max host swap used percentage
Maximum swap space usage percentage across all hosts
max 17.73%
Memory growth rate
Rate of memory growth over time
growth 92.99MB/s
Disk read throughput
Disk read throughput in MB/s
0.00MB/s
Disk write throughput
Disk write throughput in MB/s
3.40MB/s
Disk space utilization risk
Number of hosts nearing disk space capacity by mount point
Mount Point /
0/3hosts
Mount Point /efi-boot
0/2hosts
Mount Point /etc/hostname
0/2hosts
Mount Point /etc/hosts
0/2hosts
Mount Point /etc/resolv.conf
0/2hosts
Mount Point /nix/store
0/3hosts
System load average
System load averages over 1, 5, and 15 minutes. This is an unnormalised value not divided by number of CPUs, so it is only meaningful if all machines have the same core count.
1 min
0.32
5 min
0.26
15 min
0.15
CPU overloaded hosts
Percentage of hosts that experienced CPU overload
0.00%
CPU pressure
CPU pressure over 10, 60, and 300 second averages
10 second average
p5 0% < mean 0.7781% (SD = 4.1445%) < p95 1.44%
60 second average
0.8034%
300 second average
0.7354%
Memory pressure some
Memory pressure (some tasks stalled) over 10, 60, and 300 second averages
10 second average
p5 0% ≤ mean 0% (SD = 0%) ≤ p95 0%
60 second average
0.0000%
300 second average
0.0000%
Memory pressure full
Memory pressure (all tasks stalled) over 10, 60, and 300 second averages
10 second average
p5 0% ≤ mean 0% (SD = 0%) ≤ p95 0%
60 second average
0.0000%
300 second average
0.0000%
I/O pressure some
I/O pressure (some tasks stalled) over 10, 60 and 300 second averages
10 second average
p5 0% < mean 1.9023% (SD = 4.3644%) < p95 6.08%
60 second average
1.6958%
300 second average
1.3644%
I/O pressure full
I/O pressure (all tasks stalled) over 10, 60 and 300 second averages
10 second average
p5 0% < mean 1.7721% (SD = 4.1213%) < p95 5.8%
60 second average
1.5754%
300 second average
1.2706%
Holochain process CPU usage
CPU usage by Holochain process
p5 0.34% < mean 1.35% (SD = 4.09%) < p95 1.55%
Holochain process memory (PSS)
Proportional Set Size memory of Holochain process
p5 170.80 KiB < mean 196.22 KiB (SD = 47.06 KiB) < p95230.00 KiB
Holochain process threads
Number of threads in Holochain process
p5 16 threads < mean 18.64 threads (SD = 3.08 threads) < p95 23 threads
Holochain process file descriptors
Number of file descriptors used by Holochain process
p5 48 file descriptors < mean 59.37 file descriptors (SD = 37.71 file descriptors) < p95 81 file descriptors

Single-write, many-read

Creates an entry in the agent setup, then read one's own record back. This tests the maximum read performance for reading back local data when the chain is short.

Started
Thu, 26 Mar 2026 01:01:01 UTC
Peer count
1
Peer count at end
1
Behaviours
  • default (1 agent)
Holochain version
0.6.1-rc.3
Wind Tunnel version
0.6.0
Run ID
single_write_many_read_23571925523
read call timing
The time it takes to complete the zome call that retrieves the record.
mean 0.003863s (SD = 0.018251s) p50 0.003033s p95 0.004137s p99 0.006297s
read call rate
The number of read zome calls completed per second.
mean 2555.93/s
Error count
The number of errors collected.
0
Host Metrics
User CPU usage
CPU usage by user space
16.07%
Network receive rate (primary)
Rate of bytes received on primary network interface
p5 65 B/s < mean 280 B/s (SD = 351 B/s) < p951.02 KiB/s
Network send rate (primary)
Rate of bytes sent on primary network interface
p5 38 B/s < mean 263 B/s (SD = 261 B/s) < p95949 B/s
Total bytes received
Total bytes received on primary network interface
count
79.44 KiB
mean
280 B/s
Total bytes sent
Total bytes sent on primary network interface
count
74.41 KiB
mean
263 B/s
CPU spike anomaly
CPU spike anomaly was detected
NotDetected
Memory leak anomaly
Memory leak anomaly was detected
Detected

Warning Memory growing at 37.81 MB/s

Disk full anomaly
Disk full anomaly was detected
NotDetected
Swap thrashing anomaly
Swap thrashing anomaly was detected
NotDetected
System overload anomaly
System overload anomaly was detected
NotDetected
Additional Host Metrics
Hidden by default. Click to toggle visibility.
CPU usage
Total CPU usage and kernel CPU usage
Total
p5 19.72% < mean 23.57% (SD = 5.13%) < p95 24.38%
System
7.50%
CPU percentiles
CPU usage percentiles
p50
22.81%
p95
24.38%
p99
49.95%
CPU usage above 80%
Number of hosts above 80% CPU and mean time spent above threshold for those hosts
count
0 hosts
mean time
0.00s
Memory used percentage
Percentage of memory used
p5 11.59% < mean 12.35% (SD = 0.55%) < p95 13.04%
Memory available percentage
Percentage of available memory
p5 86.96% < mean 87.65% (SD = 0.55%) < p95 88.41%
Max host memory used
Maximum memory usage percentage across all hosts
max 12.35%
Max host swap used percentage
Maximum swap space usage percentage across all hosts
max 0.00%
Memory growth rate
Rate of memory growth over time
growth 37.81MB/s
Disk read throughput
Disk read throughput in MB/s
0.00MB/s
Disk write throughput
Disk write throughput in MB/s
4.93MB/s
Disk space utilization risk
Number of hosts nearing disk space capacity by mount point
Mount Point /
0/1hosts
Mount Point /efi-boot
0/1hosts
Mount Point /nix/store
0/1hosts
System load average
System load averages over 1, 5, and 15 minutes. This is an unnormalised value not divided by number of CPUs, so it is only meaningful if all machines have the same core count.
1 min
1.03
5 min
0.49
15 min
0.20
CPU overloaded hosts
Percentage of hosts that experienced CPU overload
0.00%
CPU pressure
CPU pressure over 10, 60, and 300 second averages
10 second average
p5 0% < mean 0.0097% (SD = 0.0304%) < p95 0.12%
60 second average
0.0070%
300 second average
0.0003%
Memory pressure some
Memory pressure (some tasks stalled) over 10, 60, and 300 second averages
10 second average
p5 0% ≤ mean 0% (SD = 0%) ≤ p95 0%
60 second average
0.0000%
300 second average
0.0000%
Memory pressure full
Memory pressure (all tasks stalled) over 10, 60, and 300 second averages
10 second average
p5 0% ≤ mean 0% (SD = 0%) ≤ p95 0%
60 second average
0.0000%
300 second average
0.0000%
I/O pressure some
I/O pressure (some tasks stalled) over 10, 60 and 300 second averages
10 second average
p5 3.96% < mean 6.6643% (SD = 2.2242%) < p95 11.01%
60 second average
5.8347%
300 second average
2.9487%
I/O pressure full
I/O pressure (all tasks stalled) over 10, 60 and 300 second averages
10 second average
p5 3.95% < mean 6.5643% (SD = 2.2034%) < p95 10.92%
60 second average
5.7433%
300 second average
2.8987%
Holochain process CPU usage
CPU usage by Holochain process
p5 16.8% < mean 20.42% (SD = 5.38%) < p95 21%
Holochain process memory (PSS)
Proportional Set Size memory of Holochain process
p5 233.99 KiB ≤ mean 232.65 KiB (SD = 27.60 KiB) < p95245.51 KiB
Holochain process threads
Number of threads in Holochain process
p5 12 threads ≤ mean 11.9 threads (SD = 0.54 threads) < p95 12 threads
Holochain process file descriptors
Number of file descriptors used by Holochain process
p5 54 file descriptors < mean 55.3 file descriptors (SD = 3.59 file descriptors) < p95 62 file descriptors

Two-party countersigning

This scenario tests the performance of countersigning operations. There are two roles: initiate and participate. The participants commit an entry to advertise that they are willing to participate in sessions. They listen for sessions and participate in one at a time.

Started
Thu, 26 Mar 2026 01:18:50 UTC
Peer count
3
Peer count at end
3
Behaviours
  • initiate (1 agent)
  • participate (1 agent)
Holochain version
0.6.1-rc.3
Wind Tunnel version
0.6.0
Run ID
two_party_countersigning_23571925523
Session accepted -- timing
The duration of the session from acceptance to completion.
Mean
mean 0.235947s (SD = 0.459241s)
Max
Highest per-partition mean latency
max mean 0.276344s
Min
Lowest per-partition mean latency
min mean 0.195551s
Session accepted -- success rate
The number of accepted sessions that completed per second.
Mean
mean 17.15/s
Max
Highest per-partition mean rate
max 17.33/s
Min
Lowest per-partition mean rate
min 16.96/s
Session accepted -- success ratio
Fraction of accepted sessions that completed successfully (0–1).
0.9971
Session accepted -- failures
Accepted sessions that failed to complete.
Total
1
Agents affected
1 / 1
Mean per agent
Total count divided by number of partitions, rounded to nearest whole number
1
Max
Highest count in any single partition
1
Min
Lowest count in any single partition
1
Not enough time data to show a trend.
Session initiated -- timing
The duration of the session from initiation to completion.
Mean
mean 0.290628s (SD = 0.63704s)
Max
Highest per-partition mean latency
max mean 0.290628s
Min
Lowest per-partition mean latency
min mean 0.290628s
Session initiated -- success rate
The number of initiated sessions that completed per second.
Mean
mean 34.3/s
Max
Highest per-partition mean rate
max 34.3/s
Min
Lowest per-partition mean rate
min 34.3/s
Session initiated -- success ratio
Fraction of initiated sessions that completed successfully (0–1).
0.9994
Session initiated -- failures
Initiated sessions that failed to complete.
Total
10
Agents affected
1 / 1
Mean per agent
Total count divided by number of partitions, rounded to nearest whole number
10
Max
Highest count in any single partition
10
Min
Lowest count in any single partition
10
Host Metrics
User CPU usage
CPU usage by user space
12.08%
Network receive rate (primary)
Rate of bytes received on primary network interface
p5 33.91 KiB/s < mean 139.11 KiB/s (SD = 88.82 KiB/s) < p95228.80 KiB/s
Network send rate (primary)
Rate of bytes sent on primary network interface
p5 28.50 KiB/s < mean 130.47 KiB/s (SD = 58.59 KiB/s) < p95217.22 KiB/s
Total bytes received
Total bytes received on primary network interface
count
118.19 MiB
mean
403.41 KiB/s
Total bytes sent
Total bytes sent on primary network interface
count
110.85 MiB
mean
378.35 KiB/s
CPU spike anomaly
CPU spike anomaly was detected
NotDetected
Memory leak anomaly
Memory leak anomaly was detected
Detected

Warning Memory growing at 145.93 MB/s

Disk full anomaly
Disk full anomaly was detected
NotDetected
Swap thrashing anomaly
Swap thrashing anomaly was detected
Detected

Critical Heavy swap usage (95.0% swap used)

System overload anomaly
System overload anomaly was detected
NotDetected
Additional Host Metrics
Hidden by default. Click to toggle visibility.
CPU usage
Total CPU usage and kernel CPU usage
Total
p5 5.1% < mean 17.24% (SD = 13.68%) < p95 38.39%
System
5.16%
CPU percentiles
CPU usage percentiles
p50
9.44%
p95
38.39%
p99
71.29%
CPU usage above 80%
Number of hosts above 80% CPU and mean time spent above threshold for those hosts
count
0 hosts
mean time
0.00s
Memory used percentage
Percentage of memory used
p5 28.17% < mean 43.2% (SD = 20.09%) < p95 71.42%
Memory available percentage
Percentage of available memory
p5 28.58% < mean 56.8% (SD = 20.09%) < p95 71.83%
Max host memory used
Maximum memory usage percentage across all hosts
max 70.91%
Max host swap used percentage
Maximum swap space usage percentage across all hosts
max 94.99%
Memory growth rate
Rate of memory growth over time
growth 145.93MB/s
Disk read throughput
Disk read throughput in MB/s
0.00MB/s
Disk write throughput
Disk write throughput in MB/s
23.37MB/s
Disk space utilization risk
Number of hosts nearing disk space capacity by mount point
Mount Point /etc/hostname
0/3hosts
Mount Point /etc/hosts
0/3hosts
Mount Point /etc/resolv.conf
0/3hosts
System load average
System load averages over 1, 5, and 15 minutes. This is an unnormalised value not divided by number of CPUs, so it is only meaningful if all machines have the same core count.
1 min
1.49
5 min
0.97
15 min
0.65
CPU overloaded hosts
Percentage of hosts that experienced CPU overload
0.00%
CPU pressure
CPU pressure over 10, 60, and 300 second averages
10 second average
p5 0% < mean 3.2663% (SD = 4.5762%) < p95 11.63%
60 second average
3.0370%
300 second average
2.0076%
Memory pressure some
Memory pressure (some tasks stalled) over 10, 60, and 300 second averages
10 second average
p5 0% ≤ mean 0% (SD = 0%) ≤ p95 0%
60 second average
0.0000%
300 second average
0.0000%
Memory pressure full
Memory pressure (all tasks stalled) over 10, 60, and 300 second averages
10 second average
p5 0% ≤ mean 0% (SD = 0%) ≤ p95 0%
60 second average
0.0000%
300 second average
0.0000%
I/O pressure some
I/O pressure (some tasks stalled) over 10, 60 and 300 second averages
10 second average
p5 0% < mean 6.3896% (SD = 9.5784%) < p95 25.8%
60 second average
5.4581%
300 second average
2.9078%
I/O pressure full
I/O pressure (all tasks stalled) over 10, 60 and 300 second averages
10 second average
p5 0% < mean 4.6367% (SD = 7.0206%) < p95 19.05%
60 second average
3.9463%
300 second average
2.1209%
Holochain process CPU usage
CPU usage by Holochain process
p5 1.4% < mean 7.46% (SD = 7.06%) < p95 17.75%
Holochain process memory (PSS)
Proportional Set Size memory of Holochain process
p5 257.47 KiB < mean 276.28 KiB (SD = 26.04 KiB) < p95319.31 KiB
Holochain process threads
Number of threads in Holochain process
p5 18 threads < mean 25 threads (SD = 5.7 threads) < p95 34 threads
Holochain process file descriptors
Number of file descriptors used by Holochain process
p5 72 file descriptors < mean 86.16 file descriptors (SD = 14.58 file descriptors) < p95 106 file descriptors

Validation Receipts

Creates an entry, wait for required validation receipts, then repeat. Records the amount of time it took to accumulate the required number of receipts for all DHT operations. This is measured to the nearest 20ms so that we don't keep the agent too busy checking for receipts.

Each agent in this scenario waits for a certain number of peers to be available or for up to two minutes, whichever happens first, before starting its behaviour.

By default, this scenario will wait for a complete set of validation receipts before committing the next record. If the NO_VALIDATION_COMPLETE environment variable is set, it will instead publish new records on every round, building up an ever-growing list of action hashes to check on.

Started
Thu, 26 Mar 2026 01:15:23 UTC
Peer count
20
Peer count at end
20
Behaviours
  • default (1 agent)
Holochain version
0.6.1-rc.3
Wind Tunnel version
0.6.0
Run ID
validation_receipts_23571925523
Receipts complete timing
The amount of time between publishing a record and receiving the required number of validation receipts.
Mean
mean 5.404858s (SD = 1.718003s)
Max
Highest per-partition mean latency
max mean 5.709942s
Min
Lowest per-partition mean latency
min mean 5.186067s
Receipts complete rate
The number of complete validation receipt sets collected per second.
Mean
mean 1.84/s
Max
Highest per-partition mean rate
max 1.95/s
Min
Lowest per-partition mean rate
min 1.55/s
Host Metrics
User CPU usage
CPU usage by user space
6.47%
Network receive rate (primary)
Rate of bytes received on primary network interface
p5 581 B/s < mean 55.45 KiB/s (SD = 308.86 KiB/s) < p9567.79 KiB/s
Network send rate (primary)
Rate of bytes sent on primary network interface
p5 167 B/s < mean 31.40 KiB/s (SD = 25.21 KiB/s) < p9566.63 KiB/s
Total bytes received
Total bytes received on primary network interface
count
992.53 MiB
mean
1.07 MiB/s
Total bytes sent
Total bytes sent on primary network interface
count
562.00 MiB
mean
618.81 KiB/s
CPU spike anomaly
CPU spike anomaly was detected
NotDetected
Memory leak anomaly
Memory leak anomaly was detected
Detected

Warning Memory growing at 1296.95 MB/s

Disk full anomaly
Disk full anomaly was detected
NotDetected
Swap thrashing anomaly
Swap thrashing anomaly was detected
Detected

Critical Heavy swap usage (95.0% swap used)

System overload anomaly
System overload anomaly was detected
NotDetected
Additional Host Metrics
Hidden by default. Click to toggle visibility.
CPU usage
Total CPU usage and kernel CPU usage
Total
p5 1.1% < mean 8.87% (SD = 10.03%) < p95 28.38%
System
2.41%
CPU percentiles
CPU usage percentiles
p50
5.59%
p95
28.38%
p99
49.19%
CPU usage above 80%
Number of hosts above 80% CPU and mean time spent above threshold for those hosts
count
4 hosts
mean time
0.01s
Memory used percentage
Percentage of memory used
p5 6.38% < mean 24.36% (SD = 19.91%) < p95 76.01%
Memory available percentage
Percentage of available memory
p5 23.99% < mean 75.64% (SD = 19.91%) < p95 93.62%
Max host memory used
Maximum memory usage percentage across all hosts
max 77.76%
Max host swap used percentage
Maximum swap space usage percentage across all hosts
max 94.99%
Memory growth rate
Rate of memory growth over time
growth 1296.95MB/s
Disk read throughput
Disk read throughput in MB/s
0.22MB/s
Disk write throughput
Disk write throughput in MB/s
67.32MB/s
Disk space utilization risk
Number of hosts nearing disk space capacity by mount point
Mount Point /
0/7hosts
Mount Point /efi-boot
0/6hosts
Mount Point /etc/hostname
0/12hosts
Mount Point /etc/hosts
0/12hosts
Mount Point /etc/resolv.conf
0/12hosts
Mount Point /nix/store
0/7hosts
System load average
System load averages over 1, 5, and 15 minutes. This is an unnormalised value not divided by number of CPUs, so it is only meaningful if all machines have the same core count.
1 min
0.67
5 min
0.57
15 min
0.40
CPU overloaded hosts
Percentage of hosts that experienced CPU overload
0.00%
CPU pressure
CPU pressure over 10, 60, and 300 second averages
10 second average
p5 0% < mean 0.8132% (SD = 1.7255%) < p95 3.84%
60 second average
0.7958%
300 second average
0.6791%
Memory pressure some
Memory pressure (some tasks stalled) over 10, 60, and 300 second averages
10 second average
p5 0% ≤ mean 0% (SD = 0%) ≤ p95 0%
60 second average
0.0000%
300 second average
0.0000%
Memory pressure full
Memory pressure (all tasks stalled) over 10, 60, and 300 second averages
10 second average
p5 0% ≤ mean 0% (SD = 0%) ≤ p95 0%
60 second average
0.0000%
300 second average
0.0000%
I/O pressure some
I/O pressure (some tasks stalled) over 10, 60 and 300 second averages
10 second average
p5 0% < mean 7.175% (SD = 11.3644%) < p95 34.41%
60 second average
7.0323%
300 second average
5.5785%
I/O pressure full
I/O pressure (all tasks stalled) over 10, 60 and 300 second averages
10 second average
p5 0% < mean 6.8418% (SD = 10.9414%) < p95 33.21%
60 second average
6.7037%
300 second average
5.3088%
Holochain process CPU usage
CPU usage by Holochain process
p5 0% < mean 4.64% (SD = 6.34%) < p95 12.13%
Holochain process memory (PSS)
Proportional Set Size memory of Holochain process
p5 230.44 KiB < mean 272.76 KiB (SD = 106.52 KiB) < p95311.63 KiB
Holochain process threads
Number of threads in Holochain process
p5 1 threads < mean 24.77 threads (SD = 9.73 threads) < p95 34 threads
Holochain process file descriptors
Number of file descriptors used by Holochain process
p5 0 file descriptors < mean 71.56 file descriptors (SD = 22.49 file descriptors) < p95 94 file descriptors

Write/Query

Creates an entry, then queries the source chain and performs a simple operation on the entries, then repeats.

Started
Thu, 26 Mar 2026 01:03:09 UTC
Peer count
1
Peer count at end
1
Behaviours
  • default (1 agent)
Holochain version
0.6.1-rc.3
Wind Tunnel version
0.6.0
Run ID
write_query_23571925523
Write timing
The time it takes to complete the zome function call that writes the entry.
mean 0.019417s (SD = 0.006657s) p50 0.017589s p95 0.031071s p99 0.041565s
Write rate
The number of writes completed per second.
mean 112.39/s
Query timing
The time it takes to complete the chain_query_count_len zome call that queries the source chain.
mean 0.066588s (SD = 0.038234s) p50 0.061627s p95 0.131951s p99 0.146084s
Query rate
The number of chain queries completed per second.
mean 112.39/s
Error count
The number of errors accumulated during the run.
0
Host Metrics
User CPU usage
CPU usage by user space
25.93%
Network receive rate (primary)
Rate of bytes received on primary network interface
p5 831 B/s < mean 1.09 KiB/s (SD = 609 B/s) < p951.55 KiB/s
Network send rate (primary)
Rate of bytes sent on primary network interface
p5 1.74 KiB/s < mean 2.12 KiB/s (SD = 514 B/s) < p952.92 KiB/s
Total bytes received
Total bytes received on primary network interface
count
326.50 KiB
mean
1.09 KiB/s
Total bytes sent
Total bytes sent on primary network interface
count
636.11 KiB
mean
2.12 KiB/s
CPU spike anomaly
CPU spike anomaly was detected
NotDetected
Memory leak anomaly
Memory leak anomaly was detected
NotDetected
Disk full anomaly
Disk full anomaly was detected
NotDetected
Swap thrashing anomaly
Swap thrashing anomaly was detected
NotDetected
System overload anomaly
System overload anomaly was detected
NotDetected
Additional Host Metrics
Hidden by default. Click to toggle visibility.
CPU usage
Total CPU usage and kernel CPU usage
Total
p5 34.44% < mean 36.86% (SD = 3.98%) < p95 37.71%
System
10.93%
CPU percentiles
CPU usage percentiles
p50
36.35%
p95
37.71%
p99
57.19%
CPU usage above 80%
Number of hosts above 80% CPU and mean time spent above threshold for those hosts
count
0 hosts
mean time
0.00s
Memory used percentage
Percentage of memory used
p5 13.4% < mean 15.89% (SD = 0.8%) < p95 16.32%
Memory available percentage
Percentage of available memory
p5 83.68% < mean 84.11% (SD = 0.8%) < p95 86.6%
Max host memory used
Maximum memory usage percentage across all hosts
max 15.89%
Max host swap used percentage
Maximum swap space usage percentage across all hosts
max 0.05%
Memory growth rate
Rate of memory growth over time
growth -38.15MB/s
Disk read throughput
Disk read throughput in MB/s
0.02MB/s
Disk write throughput
Disk write throughput in MB/s
4.84MB/s
Disk space utilization risk
Number of hosts nearing disk space capacity by mount point
Mount Point /etc/hostname
0/1hosts
Mount Point /etc/hosts
0/1hosts
Mount Point /etc/resolv.conf
0/1hosts
System load average
System load averages over 1, 5, and 15 minutes. This is an unnormalised value not divided by number of CPUs, so it is only meaningful if all machines have the same core count.
1 min
1.72
5 min
0.86
15 min
0.35
CPU overloaded hosts
Percentage of hosts that experienced CPU overload
0.00%
CPU pressure
CPU pressure over 10, 60, and 300 second averages
10 second average
p5 1.22% < mean 1.8258% (SD = 0.9299%) < p95 4.1%
60 second average
1.6926%
300 second average
0.9045%
Memory pressure some
Memory pressure (some tasks stalled) over 10, 60, and 300 second averages
10 second average
p5 0% ≤ mean 0% (SD = 0%) ≤ p95 0%
60 second average
0.0000%
300 second average
0.0000%
Memory pressure full
Memory pressure (all tasks stalled) over 10, 60, and 300 second averages
10 second average
p5 0% ≤ mean 0% (SD = 0%) ≤ p95 0%
60 second average
0.0000%
300 second average
0.0000%
I/O pressure some
I/O pressure (some tasks stalled) over 10, 60 and 300 second averages
10 second average
p5 0% < mean 0.099% (SD = 0.2697%) < p95 0.75%
60 second average
0.1084%
300 second average
0.0590%
I/O pressure full
I/O pressure (all tasks stalled) over 10, 60 and 300 second averages
10 second average
p5 0% < mean 0.0584% (SD = 0.1881%) < p95 0.37%
60 second average
0.0648%
300 second average
0.0377%
Holochain process CPU usage
CPU usage by Holochain process
p5 0% ≤ mean 0% (SD = 0%) ≤ p95 0%
Holochain process memory (PSS)
Proportional Set Size memory of Holochain process
p5 234.15 KiB < mean 241.97 KiB (SD = 34.29 KiB) < p95259.21 KiB
Holochain process threads
Number of threads in Holochain process
p5 1 threads ≤ mean 1 threads (SD = 0 threads) ≤ p95 1 threads
Holochain process file descriptors
Number of file descriptors used by Holochain process
p5 0 file descriptors ≤ mean 0 file descriptors (SD = 0 file descriptors) ≤ p95 0 file descriptors

Write/Read

Creates an entry and reads it back, then repeats.

Started
Thu, 26 Mar 2026 01:05:04 UTC
Peer count
1
Peer count at end
1
Behaviours
  • default (1 agent)
Holochain version
0.6.1-rc.3
Wind Tunnel version
0.6.0
Run ID
write_read_23571925523
Write timing
The time taken to write the entry.
mean 0.019664s (SD = 0.00988s) p50 0.018024s p95 0.036881s p99 0.051657s
Write rate
The number of writes completed per second.
mean 198.71/s
Read timing
The time taken to read the entry.
mean 0.028877s (SD = 0.019151s) p50 0.024452s p95 0.061947s p99 0.071397s
Read rate
The number of reads completed per second.
mean 198.68/s
Error count
The number of errors accumulated over the run.
0
Host Metrics
User CPU usage
CPU usage by user space
23.37%
Network receive rate (primary)
Rate of bytes received on primary network interface
p5 16.21 KiB/s < mean 17.45 KiB/s (SD = 630 B/s) < p9518.60 KiB/s
Network send rate (primary)
Rate of bytes sent on primary network interface
p5 18.27 KiB/s < mean 19.60 KiB/s (SD = 583 B/s) < p9520.56 KiB/s
Total bytes received
Total bytes received on primary network interface
count
4.94 MiB
mean
17.45 KiB/s
Total bytes sent
Total bytes sent on primary network interface
count
5.55 MiB
mean
19.60 KiB/s
CPU spike anomaly
CPU spike anomaly was detected
NotDetected
Memory leak anomaly
Memory leak anomaly was detected
NotDetected
Disk full anomaly
Disk full anomaly was detected
NotDetected
Swap thrashing anomaly
Swap thrashing anomaly was detected
NotDetected
System overload anomaly
System overload anomaly was detected
NotDetected
Additional Host Metrics
Hidden by default. Click to toggle visibility.
CPU usage
Total CPU usage and kernel CPU usage
Total
p5 23.87% < mean 26.52% (SD = 1.86%) < p95 27.52%
System
3.15%
CPU percentiles
CPU usage percentiles
p50
26.55%
p95
27.52%
p99
33.75%
CPU usage above 80%
Number of hosts above 80% CPU and mean time spent above threshold for those hosts
count
0 hosts
mean time
0.00s
Memory used percentage
Percentage of memory used
p5 7.84% < mean 8.02% (SD = 0.21%) < p95 8.31%
Memory available percentage
Percentage of available memory
p5 91.69% < mean 91.98% (SD = 0.21%) < p95 92.16%
Max host memory used
Maximum memory usage percentage across all hosts
max 8.02%
Max host swap used percentage
Maximum swap space usage percentage across all hosts
max 0.00%
Memory growth rate
Rate of memory growth over time
growth -91.06MB/s
Disk read throughput
Disk read throughput in MB/s
0.00MB/s
Disk write throughput
Disk write throughput in MB/s
17.76MB/s
Disk space utilization risk
Number of hosts nearing disk space capacity by mount point
Mount Point /
0/1hosts
Mount Point /nix/store
0/1hosts
System load average
System load averages over 1, 5, and 15 minutes. This is an unnormalised value not divided by number of CPUs, so it is only meaningful if all machines have the same core count.
1 min
1.55
5 min
0.81
15 min
0.36
CPU overloaded hosts
Percentage of hosts that experienced CPU overload
0.00%
CPU pressure
CPU pressure over 10, 60, and 300 second averages
10 second average
p5 0% < mean 0.0087% (SD = 0.0337%) < p95 0.06%
60 second average
0.0073%
300 second average
0.0003%
Memory pressure some
Memory pressure (some tasks stalled) over 10, 60, and 300 second averages
10 second average
p5 0% ≤ mean 0% (SD = 0%) ≤ p95 0%
60 second average
0.0000%
300 second average
0.0000%
Memory pressure full
Memory pressure (all tasks stalled) over 10, 60, and 300 second averages
10 second average
p5 0% ≤ mean 0% (SD = 0%) ≤ p95 0%
60 second average
0.0000%
300 second average
0.0000%
I/O pressure some
I/O pressure (some tasks stalled) over 10, 60 and 300 second averages
10 second average
p5 0% < mean 0.0633% (SD = 0.1507%) < p95 0.46%
60 second average
0.0570%
300 second average
0.0283%
I/O pressure full
I/O pressure (all tasks stalled) over 10, 60 and 300 second averages
10 second average
p5 0% < mean 0.0447% (SD = 0.1069%) < p95 0.31%
60 second average
0.0380%
300 second average
0.0123%
Holochain process CPU usage
CPU usage by Holochain process
p5 21.62% < mean 24.62% (SD = 1.83%) < p95 25.78%
Holochain process memory (PSS)
Proportional Set Size memory of Holochain process
p5 232.81 KiB < mean 240.56 KiB (SD = 21.94 KiB) < p95259.42 KiB
Holochain process threads
Number of threads in Holochain process
p5 17 threads < mean 17.2 threads (SD = 1.08 threads) ≤ p95 17 threads
Holochain process file descriptors
Number of file descriptors used by Holochain process
p5 61 file descriptors < mean 63.6 file descriptors (SD = 3.35 file descriptors) < p95 70 file descriptors

Write validated

Creates an entry, updates it and links the create to the update, then repeats. Each of the three actions is validated by the included hApp.

Started
Thu, 26 Mar 2026 01:06:53 UTC
Peer count
1
Peer count at end
1
Behaviours
  • default (1 agent)
Holochain version
0.6.1-rc.3
Wind Tunnel version
0.6.0
Run ID
write_validated_23571925523
Write timing
The time it takes to complete the zome function call that writes the entry, updates it, and links to the update.
mean 0.097006s (SD = 0.228737s) p50 0.033723s p95 0.487069s p99 1.208223s
Write rate
The number of write zome function calls that complete per second.
mean 40.63/s
Read timing
The time it takes to complete the zome function call that reads the data.
mean 0.145349s (SD = 0.262227s) p50 0.056852s p95 0.623538s p99 1.372719s
Read rate
The number of read zome function calls that complete per second.
mean 40.67/s
Error count
The number of errors accumulated over the run.
0
Host Metrics
User CPU usage
CPU usage by user space
20.97%
Network receive rate (primary)
Rate of bytes received on primary network interface
p5 14.88 KiB/s < mean 137.51 KiB/s (SD = 635.13 KiB/s) < p95188.92 KiB/s
Network send rate (primary)
Rate of bytes sent on primary network interface
p5 15.22 KiB/s < mean 20.60 KiB/s (SD = 16.41 KiB/s) < p9527.50 KiB/s
Total bytes received
Total bytes received on primary network interface
count
41.63 MiB
mean
137.51 KiB/s
Total bytes sent
Total bytes sent on primary network interface
count
6.24 MiB
mean
20.60 KiB/s
CPU spike anomaly
CPU spike anomaly was detected
NotDetected
Memory leak anomaly
Memory leak anomaly was detected
Detected

Warning Memory growing at 181.68 MB/s

Disk full anomaly
Disk full anomaly was detected
NotDetected
Swap thrashing anomaly
Swap thrashing anomaly was detected
NotDetected
System overload anomaly
System overload anomaly was detected
NotDetected
Additional Host Metrics
Hidden by default. Click to toggle visibility.
CPU usage
Total CPU usage and kernel CPU usage
Total
p5 16.63% < mean 27.01% (SD = 9.41%) < p95 51.91%
System
6.04%
CPU percentiles
CPU usage percentiles
p50
26.77%
p95
51.91%
p99
63.56%
CPU usage above 80%
Number of hosts above 80% CPU and mean time spent above threshold for those hosts
count
0 hosts
mean time
0.00s
Memory used percentage
Percentage of memory used
p5 12.01% < mean 17.6% (SD = 1.52%) < p95 18.3%
Memory available percentage
Percentage of available memory
p5 81.7% < mean 82.4% (SD = 1.52%) < p95 87.99%
Max host memory used
Maximum memory usage percentage across all hosts
max 17.60%
Max host swap used percentage
Maximum swap space usage percentage across all hosts
max 0.00%
Memory growth rate
Rate of memory growth over time
growth 181.68MB/s
Disk read throughput
Disk read throughput in MB/s
0.00MB/s
Disk write throughput
Disk write throughput in MB/s
9.87MB/s
Disk space utilization risk
Number of hosts nearing disk space capacity by mount point
Mount Point /
0/1hosts
Mount Point /efi-boot
0/1hosts
Mount Point /nix/store
0/1hosts
System load average
System load averages over 1, 5, and 15 minutes. This is an unnormalised value not divided by number of CPUs, so it is only meaningful if all machines have the same core count.
1 min
1.71
5 min
0.90
15 min
0.40
CPU overloaded hosts
Percentage of hosts that experienced CPU overload
0.00%
CPU pressure
CPU pressure over 10, 60, and 300 second averages
10 second average
p5 0.7% < mean 1.5037% (SD = 0.4151%) < p95 2.05%
60 second average
1.3003%
300 second average
0.6297%
Memory pressure some
Memory pressure (some tasks stalled) over 10, 60, and 300 second averages
10 second average
p5 0% ≤ mean 0% (SD = 0%) ≤ p95 0%
60 second average
0.0000%
300 second average
0.0000%
Memory pressure full
Memory pressure (all tasks stalled) over 10, 60, and 300 second averages
10 second average
p5 0% ≤ mean 0% (SD = 0%) ≤ p95 0%
60 second average
0.0000%
300 second average
0.0000%
I/O pressure some
I/O pressure (some tasks stalled) over 10, 60 and 300 second averages
10 second average
p5 6.05% < mean 20.9088% (SD = 6.8051%) < p95 31.66%
60 second average
17.6050%
300 second average
9.0594%
I/O pressure full
I/O pressure (all tasks stalled) over 10, 60 and 300 second averages
10 second average
p5 5.2% < mean 18.9831% (SD = 6.2615%) < p95 28.86%
60 second average
15.9512%
300 second average
8.2219%
Holochain process CPU usage
CPU usage by Holochain process
p5 4.8% < mean 19.64% (SD = 9.15%) < p95 28.08%
Holochain process memory (PSS)
Proportional Set Size memory of Holochain process
p5 207.29 KiB < mean 432.34 KiB (SD = 103.29 KiB) < p95470.63 KiB
Holochain process threads
Number of threads in Holochain process
p5 13 threads < mean 15.67 threads (SD = 2.75 threads) < p95 19 threads
Holochain process file descriptors
Number of file descriptors used by Holochain process
p5 54 file descriptors < mean 62.79 file descriptors (SD = 10.28 file descriptors) < p95 70 file descriptors

Zome Call, Single Value

Calls a zome function that returns a fixed value. This tests the maximum performance of zome calls when the zome function is not calling into Holochain other otherwise doing any work.

Started
Thu, 26 Mar 2026 01:08:47 UTC
Peer count
1
Peer count at end
1
Behaviours
  • default (1 agent)
Holochain version
0.6.1-rc.3
Wind Tunnel version
0.6.0
Run ID
zome_call_single_value_23571925523
Call timing
The time taken for the call to complete.
mean 0.00324s (SD = 0.015809s) p50 0.002523s p95 0.003105s p99 0.005038s
Call rate
The number of zome calls completed per second.
mean 3075.14/s
Error count
The number of errors accumulated during the run.
0
Host Metrics
User CPU usage
CPU usage by user space
16.60%
Network receive rate (primary)
Rate of bytes received on primary network interface
p5 253 B/s < mean 175.80 KiB/s (SD = 883.84 KiB/s) ≤ p9520.29 KiB/s
Network send rate (primary)
Rate of bytes sent on primary network interface
p5 308 B/s < mean 18.53 KiB/s (SD = 27.69 KiB/s) < p9561.71 KiB/s
Total bytes received
Total bytes received on primary network interface
count
51.50 MiB
mean
175.80 KiB/s
Total bytes sent
Total bytes sent on primary network interface
count
5.43 MiB
mean
18.53 KiB/s
CPU spike anomaly
CPU spike anomaly was detected
NotDetected
Memory leak anomaly
Memory leak anomaly was detected
NotDetected
Disk full anomaly
Disk full anomaly was detected
NotDetected
Swap thrashing anomaly
Swap thrashing anomaly was detected
NotDetected
System overload anomaly
System overload anomaly was detected
NotDetected
Additional Host Metrics
Hidden by default. Click to toggle visibility.
CPU usage
Total CPU usage and kernel CPU usage
Total
p5 20.82% < mean 25.57% (SD = 6.12%) < p95 27.68%
System
8.97%
CPU percentiles
CPU usage percentiles
p50
25.81%
p95
27.68%
p99
54.32%
CPU usage above 80%
Number of hosts above 80% CPU and mean time spent above threshold for those hosts
count
0 hosts
mean time
0.00s
Memory used percentage
Percentage of memory used
p5 12.23% < mean 14.91% (SD = 1.59%) < p95 16.82%
Memory available percentage
Percentage of available memory
p5 83.18% < mean 85.09% (SD = 1.59%) < p95 87.77%
Max host memory used
Maximum memory usage percentage across all hosts
max 14.91%
Max host swap used percentage
Maximum swap space usage percentage across all hosts
max 0.00%
Memory growth rate
Rate of memory growth over time
growth -220.67MB/s
Disk read throughput
Disk read throughput in MB/s
0.00MB/s
Disk write throughput
Disk write throughput in MB/s
5.93MB/s
Disk space utilization risk
Number of hosts nearing disk space capacity by mount point
Mount Point /
0/1hosts
Mount Point /efi-boot
0/1hosts
Mount Point /nix/store
0/1hosts
System load average
System load averages over 1, 5, and 15 minutes. This is an unnormalised value not divided by number of CPUs, so it is only meaningful if all machines have the same core count.
1 min
1.12
5 min
0.63
15 min
0.30
CPU overloaded hosts
Percentage of hosts that experienced CPU overload
0.00%
CPU pressure
CPU pressure over 10, 60, and 300 second averages
10 second average
p5 0% < mean 0.1713% (SD = 0.1807%) < p95 0.43%
60 second average
0.1974%
300 second average
0.1006%
Memory pressure some
Memory pressure (some tasks stalled) over 10, 60, and 300 second averages
10 second average
p5 0% ≤ mean 0% (SD = 0%) ≤ p95 0%
60 second average
0.0000%
300 second average
0.0000%
Memory pressure full
Memory pressure (all tasks stalled) over 10, 60, and 300 second averages
10 second average
p5 0% ≤ mean 0% (SD = 0%) ≤ p95 0%
60 second average
0.0000%
300 second average
0.0000%
I/O pressure some
I/O pressure (some tasks stalled) over 10, 60 and 300 second averages
10 second average
p5 4.34% < mean 6.7277% (SD = 1.6254%) < p95 9.73%
60 second average
5.8865%
300 second average
3.6590%
I/O pressure full
I/O pressure (all tasks stalled) over 10, 60 and 300 second averages
10 second average
p5 3.87% < mean 6.3203% (SD = 1.5547%) < p95 9.1%
60 second average
5.5032%
300 second average
3.4384%
Holochain process CPU usage
CPU usage by Holochain process
p5 17.34% < mean 19.73% (SD = 6.35%) < p95 20.71%
Holochain process memory (PSS)
Proportional Set Size memory of Holochain process
p5 246.63 KiB < mean 247.83 KiB (SD = 10.62 KiB) < p95250.53 KiB
Holochain process threads
Number of threads in Holochain process
p5 13 threads < mean 13.29 threads (SD = 2.89 threads) ≤ p95 13 threads
Holochain process file descriptors
Number of file descriptors used by Holochain process
p5 49 file descriptors < mean 52.74 file descriptors (SD = 9.83 file descriptors) < p95 70 file descriptors