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
Wed, 25 Mar 2026 09:26:25 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_23533241325
First install time
The time from conductor startup to completion of the first app installation attempt.
0.57127655s
Install app timing
The time taken to install an app.
mean 0.195534s (SD = 0.010147s) p50 0.193141s p95 0.215201s p99 0.238231s
Host Metrics
User CPU usage
CPU usage by user space
43.17%
Network receive rate (primary)
Rate of bytes received on primary network interface
p5 899 B/s < mean 21.16 KiB/s (SD = 13.43 KiB/s) < p9533.82 KiB/s
Network send rate (primary)
Rate of bytes sent on primary network interface
p5 342 B/s < mean 6.81 KiB/s (SD = 3.59 KiB/s) < p959.42 KiB/s
Total bytes received
Total bytes received on primary network interface
count
2.07 MiB
mean
21.16 KiB/s
Total bytes sent
Total bytes sent on primary network interface
count
681.34 KiB
mean
6.81 KiB/s
CPU spike anomaly
CPU spike anomaly was detected
Detected

Warning CPU p99 reached 94.9%

Memory leak anomaly
Memory leak anomaly was detected
Detected

Warning Memory growing at 867.86 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 36.27% < mean 55.05% (SD = 18.83%) < p95 94.92%
System
11.88%
CPU percentiles
CPU usage percentiles
p50
47.67%
p95
94.92%
p99
94.92%
CPU usage above 80%
Number of hosts above 80% CPU and mean time spent above threshold for those hosts
count
1 hosts
mean time
0.20s
Memory used percentage
Percentage of memory used
p5 45.1% < mean 51.13% (SD = 3.31%) < p95 56.07%
Memory available percentage
Percentage of available memory
p5 43.93% < mean 48.87% (SD = 3.31%) < p95 54.9%
Max host memory used
Maximum memory usage percentage across all hosts
max 51.13%
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 867.86MB/s
Disk read throughput
Disk read throughput in MB/s
1.25MB/s
Disk write throughput
Disk write throughput in MB/s
17.08MB/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
1.40
5 min
1.17
15 min
1.09
CPU overloaded hosts
Percentage of hosts that experienced CPU overload
0.00%
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 60.31 KiB < mean 512.96 KiB (SD = 258.46 KiB) < p95900.83 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

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
Wed, 25 Mar 2026 09:28:16 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_23533241325
First install time
The time from conductor startup to completion of the first app installation attempt.
0.861214735s
Install app timing
The time taken to install an app.
mean 0.747947s (SD = 0.685542s) p50 0.394667s p95 2.115759s p99 3.716564s
Host Metrics
User CPU usage
CPU usage by user space
10.59%
Network receive rate (primary)
Rate of bytes received on primary network interface
p5 22.05 KiB/s < mean 259.39 KiB/s (SD = 872.66 KiB/s) < p952.23 MiB/s
Network send rate (primary)
Rate of bytes sent on primary network interface
p5 7.23 KiB/s < mean 18.81 KiB/s (SD = 12.20 KiB/s) < p9539.49 KiB/s
Total bytes received
Total bytes received on primary network interface
count
73.46 MiB
mean
259.39 KiB/s
Total bytes sent
Total bytes sent on primary network interface
count
5.33 MiB
mean
18.81 KiB/s
CPU spike anomaly
CPU spike anomaly was detected
NotDetected
Memory leak anomaly
Memory leak anomaly was detected
Detected

Warning Memory growing at 1574.54 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 5.99% < mean 13.1% (SD = 10.64%) < p95 42.15%
System
2.52%
CPU percentiles
CPU usage percentiles
p50
10.59%
p95
42.15%
p99
58.79%
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 12.13% < mean 20.9% (SD = 5.91%) < p95 27.95%
Memory available percentage
Percentage of available memory
p5 72.05% < mean 79.1% (SD = 5.91%) < p95 87.87%
Max host memory used
Maximum memory usage percentage across all hosts
max 20.90%
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 1574.54MB/s
Disk read throughput
Disk read throughput in MB/s
0.06MB/s
Disk write throughput
Disk write throughput in MB/s
4.82MB/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
1.70
5 min
0.76
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 0.09% < mean 0.6007% (SD = 0.8605%) < p95 2.49%
60 second average
0.5200%
300 second average
0.2170%
Memory pressure some
Memory pressure (some tasks stalled) over 10, 60, and 300 second averages
10 second average
p5 0% < mean 0.0513% (SD = 0.1888%) < p95 0.36%
60 second average
0.0607%
300 second average
0.0297%
Memory pressure full
Memory pressure (all tasks stalled) over 10, 60, and 300 second averages
10 second average
p5 0% < mean 0.0513% (SD = 0.1888%) < p95 0.36%
60 second average
0.0607%
300 second average
0.0297%
I/O pressure some
I/O pressure (some tasks stalled) over 10, 60 and 300 second averages
10 second average
p5 18.4% < mean 37.536% (SD = 9.4385%) < p95 55.22%
60 second average
29.9330%
300 second average
13.6790%
I/O pressure full
I/O pressure (all tasks stalled) over 10, 60 and 300 second averages
10 second average
p5 18% < mean 35.9023% (SD = 8.8846%) < p95 52.26%
60 second average
28.6657%
300 second average
13.1640%
Holochain process CPU usage
CPU usage by Holochain process
p5 1.88% < mean 8.88% (SD = 10.58%) < p95 40.53%
Holochain process memory (PSS)
Proportional Set Size memory of Holochain process
p5 119.11 KiB < mean 424.47 KiB (SD = 241.04 KiB) < p95879.97 KiB
Holochain process threads
Number of threads in Holochain process
p5 13 threads < mean 20.2 threads (SD = 3.15 threads) < p95 24 threads
Holochain process file descriptors
Number of file descriptors used by Holochain process
p5 62 file descriptors < mean 300.27 file descriptors (SD = 270.06 file descriptors) < p95 706 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
Wed, 25 Mar 2026 09:09:28 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_23533241325
Zome call timing
The time elapsed between start of install and calling init.
mean 0.008217s (SD = 0s) p50 0.008217s p95 0.008217s p99 0.008217s
Not enough time data to show a trend.
Host Metrics
User CPU usage
CPU usage by user space
8.46%
Network receive rate (primary)
Rate of bytes received on primary network interface
p5 50 B/s < mean 332 B/s (SD = 724 B/s) < p95658 B/s
Network send rate (primary)
Rate of bytes sent on primary network interface
p5 28 B/s < mean 291 B/s (SD = 569 B/s) < p95496 B/s
Total bytes received
Total bytes received on primary network interface
count
94.12 KiB
mean
332 B/s
Total bytes sent
Total bytes sent on primary network interface
count
82.36 KiB
mean
291 B/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 9.5% < mean 11.62% (SD = 7.94%) < p95 12.56%
System
3.17%
CPU percentiles
CPU usage percentiles
p50
9.96%
p95
12.56%
p99
53.50%
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 10.38% < mean 10.52% (SD = 0.27%) < p95 11.38%
Memory available percentage
Percentage of available memory
p5 88.62% < mean 89.48% (SD = 0.27%) < p95 89.62%
Max host memory used
Maximum memory usage percentage across all hosts
max 10.52%
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 -39.96MB/s
Disk read throughput
Disk read throughput in MB/s
0.03MB/s
Disk write throughput
Disk write throughput in MB/s
16.46MB/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
1.65
5 min
0.76
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 0.3% < mean 0.9807% (SD = 0.2349%) < p95 1.18%
60 second average
0.8217%
300 second average
0.3863%
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 21.47% < mean 34.9753% (SD = 5.3188%) < p95 42.12%
60 second average
29.0620%
300 second average
13.6187%
I/O pressure full
I/O pressure (all tasks stalled) over 10, 60 and 300 second averages
10 second average
p5 20.88% < mean 34.529% (SD = 5.3188%) < p95 41.51%
60 second average
28.6740%
300 second average
13.4297%
Holochain process CPU usage
CPU usage by Holochain process
p5 6.49% < mean 8.58% (SD = 8.31%) < p95 8.75%
Holochain process memory (PSS)
Proportional Set Size memory of Holochain process
p5 220.74 KiB < mean 228.49 KiB (SD = 10.70 KiB) < p95240.43 KiB
Holochain process threads
Number of threads in Holochain process
p5 14 threads ≤ mean 13.77 threads (SD = 1.26 threads) < p95 14 threads
Holochain process file descriptors
Number of file descriptors used by Holochain process
p5 54 file descriptors < mean 56.6 file descriptors (SD = 9.49 file descriptors) < p95 72 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
Wed, 25 Mar 2026 09:11:26 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_23533241325
Send timing
The time taken to emit a batch of 10,000 signals.
mean 3.367838s (SD = 1.756862s) p50 3.040442s p95 6.662307s p99 6.662307s
Receive timing
The time taken to receive the completed batch, to the nearest 250ms.
mean 27.138294s (SD = 8.097142s) p50 30.000955s p95 30.001592s p99 30.001592s
Success ratio
The proportion of signals successfully received in a batch.
min 0.8673999905586243 < mean 0.9365 (SD = 0.0343) < max 0.9969000220298768
Host Metrics
User CPU usage
CPU usage by user space
15.21%
Network receive rate (primary)
Rate of bytes received on primary network interface
p5 407 B/s < mean 1.12 KiB/s (SD = 718 B/s) < p951.67 KiB/s
Network send rate (primary)
Rate of bytes sent on primary network interface
p5 166 B/s < mean 713 B/s (SD = 548 B/s) < p951.23 KiB/s
Total bytes received
Total bytes received on primary network interface
count
325.32 KiB
mean
1.12 KiB/s
Total bytes sent
Total bytes sent on primary network interface
count
201.99 KiB
mean
713 B/s
CPU spike anomaly
CPU spike anomaly was detected
Detected

Warning CPU p99 reached 93.4%

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 11.02% < mean 25.93% (SD = 17.59%) < p95 53.7%
System
10.72%
CPU percentiles
CPU usage percentiles
p50
18.59%
p95
53.70%
p99
93.40%
CPU usage above 80%
Number of hosts above 80% CPU and mean time spent above threshold for those hosts
count
1 hosts
mean time
0.03s
Memory used percentage
Percentage of memory used
p5 47.9% < mean 47.99% (SD = 0.27%) < p95 48.37%
Memory available percentage
Percentage of available memory
p5 51.63% < mean 52.01% (SD = 0.27%) < p95 52.1%
Max host memory used
Maximum memory usage percentage across all hosts
max 47.99%
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 -6.78MB/s
Disk read throughput
Disk read throughput in MB/s
0.66MB/s
Disk write throughput
Disk write throughput in MB/s
3.18MB/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
1.75
5 min
1.00
15 min
0.66
CPU overloaded hosts
Percentage of hosts that experienced CPU overload
0.00%
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 154.04 KiB < mean 243.28 KiB (SD = 44.58 KiB) < p95254.62 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

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
Wed, 25 Mar 2026 09:13:17 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_23533241325
Dispatch timing
The time between sending a remote call and the remote handler being invoked.
Mean
mean -34.802147s (SD = 160.679011s)
Max
Highest per-partition mean latency
max mean 0s
Min
Lowest per-partition mean latency
min mean -44.992867s
Round-trip timing
The total elapsed time to get a response to the client.
Mean
mean 0.095339s (SD = 0.119648s)
Max
Highest per-partition mean latency
max mean 0.184792s
Min
Lowest per-partition mean latency
min mean 0.068885s
Host Metrics
User CPU usage
CPU usage by user space
7.17%
Network receive rate (primary)
Rate of bytes received on primary network interface
p5 12.32 KiB/s < mean 61.81 KiB/s (SD = 415.95 KiB/s) ≤ p9534.02 KiB/s
Network send rate (primary)
Rate of bytes sent on primary network interface
p5 12.22 KiB/s < mean 21.52 KiB/s (SD = 10.16 KiB/s) < p9539.33 KiB/s
Total bytes received
Total bytes received on primary network interface
count
545.10 MiB
mean
600.20 KiB/s
Total bytes sent
Total bytes sent on primary network interface
count
189.77 MiB
mean
208.95 KiB/s
CPU spike anomaly
CPU spike anomaly was detected
NotDetected
Memory leak anomaly
Memory leak anomaly was detected
Detected

Warning Memory growing at 443.68 MB/s

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

Critical Heavy swap usage (86.9% 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 3.04% < mean 11.51% (SD = 11.42%) < p95 47.6%
System
4.34%
CPU percentiles
CPU usage percentiles
p50
7.26%
p95
47.60%
p99
48.77%
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 5.77% < mean 18.59% (SD = 16.95%) < p95 66.22%
Memory available percentage
Percentage of available memory
p5 33.78% < mean 81.41% (SD = 16.95%) < p95 94.23%
Max host memory used
Maximum memory usage percentage across all hosts
max 66.19%
Max host swap used percentage
Maximum swap space usage percentage across all hosts
max 86.91%
Memory growth rate
Rate of memory growth over time
growth 443.68MB/s
Disk read throughput
Disk read throughput in MB/s
0.13MB/s
Disk write throughput
Disk write throughput in MB/s
11.74MB/s
Disk space utilization risk
Number of hosts nearing disk space capacity by mount point
Mount Point /
0/5hosts
Mount Point /efi-boot
0/5hosts
Mount Point /etc/hostname
0/5hosts
Mount Point /etc/hosts
0/5hosts
Mount Point /etc/resolv.conf
0/5hosts
Mount Point /nix/store
0/5hosts
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
0.56
5 min
0.40
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 1.1545% (SD = 1.8303%) < p95 5.2%
60 second average
1.0887%
300 second average
0.7959%
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 2.1353% (SD = 6.3336%) < p95 9.93%
60 second average
2.1251%
300 second average
1.6588%
I/O pressure full
I/O pressure (all tasks stalled) over 10, 60 and 300 second averages
10 second average
p5 0% < mean 1.9627% (SD = 5.911%) < p95 9.64%
60 second average
1.9535%
300 second average
1.5303%
Holochain process CPU usage
CPU usage by Holochain process
p5 0% < mean 5.24% (SD = 5.24%) < p95 12.34%
Holochain process memory (PSS)
Proportional Set Size memory of Holochain process
p5 194.15 KiB < mean 220.40 KiB (SD = 22.24 KiB) < p95247.78 KiB
Holochain process threads
Number of threads in Holochain process
p5 1 threads < mean 18.18 threads (SD = 7.27 threads) < p95 27 threads
Holochain process file descriptors
Number of file descriptors used by Holochain process
p5 0 file descriptors < mean 52.58 file descriptors (SD = 20.78 file descriptors) < p95 82 file descriptors

Remote Signals

This scenario tests the throughput of remote_signals operations.

Started
Wed, 25 Mar 2026 09:15:06 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_23533241325
Round trip time
The time from origin signal dispatch to origin receive of the remote side's response signal.
mean 0.236481s (SD = 0.283573s) p50 0.269837s p95 0.342566s p99 0.413947s
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
5.33%
Network receive rate (primary)
Rate of bytes received on primary network interface
p5 6.15 KiB/s < mean 63.14 KiB/s (SD = 444.83 KiB/s) ≤ p9534.06 KiB/s
Network send rate (primary)
Rate of bytes sent on primary network interface
p5 5.32 KiB/s < mean 23.19 KiB/s (SD = 11.70 KiB/s) < p9536.95 KiB/s
Total bytes received
Total bytes received on primary network interface
count
276.86 MiB
mean
311.55 KiB/s
Total bytes sent
Total bytes sent on primary network interface
count
101.68 MiB
mean
114.41 KiB/s
CPU spike anomaly
CPU spike anomaly was detected
NotDetected
Memory leak anomaly
Memory leak anomaly was detected
Detected

Warning Memory growing at 486.66 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 1.77% < mean 7.33% (SD = 8.57%) < p95 14.02%
System
2.00%
CPU percentiles
CPU usage percentiles
p50
2.92%
p95
14.02%
p99
51.30%
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 10.43% < mean 36.83% (SD = 23.54%) < p95 78.24%
Memory available percentage
Percentage of available memory
p5 21.76% < mean 63.17% (SD = 23.54%) < p95 89.57%
Max host memory used
Maximum memory usage percentage across all hosts
max 78.24%
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 486.66MB/s
Disk read throughput
Disk read throughput in MB/s
0.02MB/s
Disk write throughput
Disk write throughput in MB/s
7.05MB/s
Disk space utilization risk
Number of hosts nearing disk space capacity by mount point
Mount Point /etc/hostname
0/5hosts
Mount Point /etc/hosts
0/5hosts
Mount Point /etc/resolv.conf
0/5hosts
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
0.58
5 min
0.45
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 1.0677% (SD = 4.7667%) < p95 1.77%
60 second average
1.0305%
300 second average
0.9042%
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 2.3894% (SD = 6.392%) < p95 17.44%
60 second average
2.3254%
300 second average
1.6412%
I/O pressure full
I/O pressure (all tasks stalled) over 10, 60 and 300 second averages
10 second average
p5 0% < mean 2.2981% (SD = 6.2214%) < p95 16.7%
60 second average
2.2366%
300 second average
1.5770%
Holochain process CPU usage
CPU usage by Holochain process
p5 0% < mean 1.34% (SD = 3.93%) < p95 7.7%
Holochain process memory (PSS)
Proportional Set Size memory of Holochain process
p5 181.97 KiB < mean 219.83 KiB (SD = 83.54 KiB) < p95528.60 KiB
Holochain process threads
Number of threads in Holochain process
p5 1 threads < mean 15.19 threads (SD = 7.42 threads) < p95 21 threads
Holochain process file descriptors
Number of file descriptors used by Holochain process
p5 0 file descriptors < mean 45.6 file descriptors (SD = 25.83 file descriptors) < p95 78 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
Wed, 25 Mar 2026 09:16:57 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_23533241325
read call timing
The time it takes to complete the zome call that retrieves the record.
mean 0.010954s (SD = 0.001831s) p50 0.010411s p95 0.01395s p99 0.018425s
read call rate
The number of read zome calls completed per second.
mean 900.31/s
Error count
The number of errors collected.
0
Host Metrics
User CPU usage
CPU usage by user space
30.44%
Network receive rate (primary)
Rate of bytes received on primary network interface
p5 630 B/s < mean 1.08 KiB/s (SD = 675 B/s) < p951.30 KiB/s
Network send rate (primary)
Rate of bytes sent on primary network interface
p5 347 B/s < mean 816 B/s (SD = 761 B/s) < p953.30 KiB/s
Total bytes received
Total bytes received on primary network interface
count
312.70 KiB
mean
1.08 KiB/s
Total bytes sent
Total bytes sent on primary network interface
count
231.13 KiB
mean
816 B/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 38.15% < mean 45.19% (SD = 11.01%) < p95 76.28%
System
14.75%
CPU percentiles
CPU usage percentiles
p50
40.65%
p95
76.28%
p99
87.69%
CPU usage above 80%
Number of hosts above 80% CPU and mean time spent above threshold for those hosts
count
1 hosts
mean time
0.03s
Memory used percentage
Percentage of memory used
p5 47.82% < mean 48.08% (SD = 0.28%) < p95 48.79%
Memory available percentage
Percentage of available memory
p5 51.21% < mean 51.92% (SD = 0.28%) < p95 52.18%
Max host memory used
Maximum memory usage percentage across all hosts
max 48.08%
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 -43.68MB/s
Disk read throughput
Disk read throughput in MB/s
0.18MB/s
Disk write throughput
Disk write throughput in MB/s
8.02MB/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
2.04
5 min
1.83
15 min
1.15
CPU overloaded hosts
Percentage of hosts that experienced CPU overload
0.00%
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 248.58 KiB < mean 249.15 KiB (SD = 15.15 KiB) < p95273.22 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

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
Wed, 25 Mar 2026 09:34:32 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_23533241325
Session accepted -- timing
The duration of the session from acceptance to completion.
Mean
mean 0.77272s (SD = 0.954251s)
Max
Highest per-partition mean latency
max mean 0.875327s
Min
Lowest per-partition mean latency
min mean 0.670114s
Session accepted -- success rate
The number of accepted sessions that completed per second.
Mean
mean 7/s
Max
Highest per-partition mean rate
max 7.04/s
Min
Lowest per-partition mean rate
min 6.96/s
Session accepted -- success ratio
Fraction of accepted sessions that completed successfully (0–1).
1
Session accepted -- failures
Accepted sessions that failed to complete.
Total
7
Agents affected
1 / 1
Mean per agent
Total count divided by number of partitions, rounded to nearest whole number
7
Max
Highest count in any single partition
7
Min
Lowest count in any single partition
7
Session initiated -- timing
The duration of the session from initiation to completion.
Mean
mean 0.8051s (SD = 1.003643s)
Max
Highest per-partition mean latency
max mean 0.8051s
Min
Lowest per-partition mean latency
min mean 0.8051s
Session initiated -- success rate
The number of initiated sessions that completed per second.
Mean
mean 14/s
Max
Highest per-partition mean rate
max 14/s
Min
Lowest per-partition mean rate
min 14/s
Session initiated -- success ratio
Fraction of initiated sessions that completed successfully (0–1).
1
Session initiated -- failures
Initiated sessions that failed to complete.
Total
8
Agents affected
1 / 1
Mean per agent
Total count divided by number of partitions, rounded to nearest whole number
8
Max
Highest count in any single partition
8
Min
Lowest count in any single partition
8
Host Metrics
User CPU usage
CPU usage by user space
4.07%
Network receive rate (primary)
Rate of bytes received on primary network interface
p5 2.61 KiB/s < mean 60.31 KiB/s (SD = 185.44 KiB/s) < p9596.57 KiB/s
Network send rate (primary)
Rate of bytes sent on primary network interface
p5 2.48 KiB/s < mean 34.62 KiB/s (SD = 18.17 KiB/s) < p9560.46 KiB/s
Total bytes received
Total bytes received on primary network interface
count
53.59 MiB
mean
177.03 KiB/s
Total bytes sent
Total bytes sent on primary network interface
count
30.76 MiB
mean
101.62 KiB/s
CPU spike anomaly
CPU spike anomaly was detected
NotDetected
Memory leak anomaly
Memory leak anomaly was detected
Detected

Warning Memory growing at 102.66 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 0.41% < mean 5.46% (SD = 5.8%) < p95 10.87%
System
1.39%
CPU percentiles
CPU usage percentiles
p50
6.03%
p95
10.87%
p99
48.93%
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 6.27% < mean 15.45% (SD = 7.41%) < p95 24.72%
Memory available percentage
Percentage of available memory
p5 75.28% < mean 84.55% (SD = 7.41%) < p95 93.73%
Max host memory used
Maximum memory usage percentage across all hosts
max 24.49%
Max host swap used percentage
Maximum swap space usage percentage across all hosts
max 3.27%
Memory growth rate
Rate of memory growth over time
growth 102.66MB/s
Disk read throughput
Disk read throughput in MB/s
0.00MB/s
Disk write throughput
Disk write throughput in MB/s
8.76MB/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 /etc/hostname
0/1hosts
Mount Point /etc/hosts
0/1hosts
Mount Point /etc/resolv.conf
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
0.86
5 min
0.70
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 0.1727% (SD = 0.2484%) < p95 0.6%
60 second average
0.1682%
300 second average
0.1351%
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 12.966% (SD = 18.6022%) < p95 45.27%
60 second average
13.2722%
300 second average
11.4595%
I/O pressure full
I/O pressure (all tasks stalled) over 10, 60 and 300 second averages
10 second average
p5 0% < mean 12.1862% (SD = 17.5295%) < p95 43.53%
60 second average
12.5020%
300 second average
10.8498%
Holochain process CPU usage
CPU usage by Holochain process
p5 0.13% < mean 3.36% (SD = 4.97%) < p95 6.44%
Holochain process memory (PSS)
Proportional Set Size memory of Holochain process
p5 188.93 KiB < mean 245.31 KiB (SD = 45.77 KiB) < p95271.87 KiB
Holochain process threads
Number of threads in Holochain process
p5 13 threads < mean 19.95 threads (SD = 5.04 threads) < p95 25 threads
Holochain process file descriptors
Number of file descriptors used by Holochain process
p5 49 file descriptors < mean 72.49 file descriptors (SD = 12.71 file descriptors) < p95 85 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
Wed, 25 Mar 2026 09:30:46 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_23533241325
Receipts complete timing
The amount of time between publishing a record and receiving the required number of validation receipts.
Mean
mean 15.729917s (SD = 7.895221s)
Max
Highest per-partition mean latency
max mean 218.050746s
Min
Lowest per-partition mean latency
min mean 5.474372s
Receipts complete rate
The number of complete validation receipt sets collected per second.
Mean
mean 1.72/s
Max
Highest per-partition mean rate
max 1.85/s
Min
Lowest per-partition mean rate
min 1/s
Host Metrics
User CPU usage
CPU usage by user space
6.37%
Network receive rate (primary)
Rate of bytes received on primary network interface
p5 16.29 KiB/s < mean 79.26 KiB/s (SD = 464.56 KiB/s) ≤ p9574.47 KiB/s
Network send rate (primary)
Rate of bytes sent on primary network interface
p5 16.12 KiB/s < mean 36.87 KiB/s (SD = 31.79 KiB/s) < p9571.97 KiB/s
Total bytes received
Total bytes received on primary network interface
count
1.38 GiB
mean
1.52 MiB/s
Total bytes sent
Total bytes sent on primary network interface
count
655.72 MiB
mean
722.00 KiB/s
CPU spike anomaly
CPU spike anomaly was detected
NotDetected
Memory leak anomaly
Memory leak anomaly was detected
Detected

Warning Memory growing at 1166.58 MB/s

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

Critical Heavy swap usage (24.4% 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 1.66% < mean 9.09% (SD = 11.01%) < p95 26.08%
System
2.72%
CPU percentiles
CPU usage percentiles
p50
5.69%
p95
26.08%
p99
62.88%
CPU usage above 80%
Number of hosts above 80% CPU and mean time spent above threshold for those hosts
count
6 hosts
mean time
0.02s
Memory used percentage
Percentage of memory used
p5 5.87% < mean 19.27% (SD = 11.22%) < p95 47.77%
Memory available percentage
Percentage of available memory
p5 52.23% < mean 80.73% (SD = 11.22%) < p95 94.13%
Max host memory used
Maximum memory usage percentage across all hosts
max 47.96%
Max host swap used percentage
Maximum swap space usage percentage across all hosts
max 24.38%
Memory growth rate
Rate of memory growth over time
growth 1166.58MB/s
Disk read throughput
Disk read throughput in MB/s
0.28MB/s
Disk write throughput
Disk write throughput in MB/s
65.10MB/s
Disk space utilization risk
Number of hosts nearing disk space capacity by mount point
Mount Point /
0/7hosts
Mount Point /efi-boot
0/4hosts
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
0.55
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 0.793% (SD = 2.286%) < p95 3.81%
60 second average
0.7763%
300 second average
0.6173%
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
0.0008%
300 second average
0.0005%
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
0.0008%
300 second average
0.0005%
I/O pressure some
I/O pressure (some tasks stalled) over 10, 60 and 300 second averages
10 second average
p5 0% < mean 7.1286% (SD = 13.0455%) < p95 38.9%
60 second average
6.8034%
300 second average
5.0916%
I/O pressure full
I/O pressure (all tasks stalled) over 10, 60 and 300 second averages
10 second average
p5 0% < mean 6.8536% (SD = 12.513%) < p95 36.74%
60 second average
6.5337%
300 second average
4.9024%
Holochain process CPU usage
CPU usage by Holochain process
p5 0% < mean 4.2% (SD = 7.7%) < p95 10.21%
Holochain process memory (PSS)
Proportional Set Size memory of Holochain process
p5 234.24 KiB < mean 295.38 KiB (SD = 153.32 KiB) < p95787.61 KiB
Holochain process threads
Number of threads in Holochain process
p5 1 threads < mean 22.94 threads (SD = 9.24 threads) < p95 32 threads
Holochain process file descriptors
Number of file descriptors used by Holochain process
p5 0 file descriptors < mean 73.46 file descriptors (SD = 29.77 file descriptors) < p95 106 file descriptors

Write/Query

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

Started
Wed, 25 Mar 2026 09:18:53 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_query_23533241325
Write timing
The time it takes to complete the zome function call that writes the entry.
mean 0.111349s (SD = 0.393099s) p50 0.010301s p95 0.833302s p99 2.222061s
Write rate
The number of writes completed per second.
mean 66.82/s
Query timing
The time it takes to complete the chain_query_count_len zome call that queries the source chain.
mean 0.035496s (SD = 0.02833s) p50 0.033151s p95 0.065655s p99 0.082289s
Query rate
The number of chain queries completed per second.
mean 66.82/s
Error count
The number of errors accumulated during the run.
0
Host Metrics
User CPU usage
CPU usage by user space
14.21%
Network receive rate (primary)
Rate of bytes received on primary network interface
p5 12.42 KiB/s < mean 14.53 KiB/s (SD = 1.48 KiB/s) < p9516.62 KiB/s
Network send rate (primary)
Rate of bytes sent on primary network interface
p5 11.42 KiB/s < mean 13.41 KiB/s (SD = 1.30 KiB/s) < p9515.20 KiB/s
Total bytes received
Total bytes received on primary network interface
count
4.26 MiB
mean
14.53 KiB/s
Total bytes sent
Total bytes sent on primary network interface
count
3.93 MiB
mean
13.41 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 11.75% < mean 18.36% (SD = 7.95%) < p95 21.16%
System
4.15%
CPU percentiles
CPU usage percentiles
p50
17.82%
p95
21.16%
p99
58.48%
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 14.1% < mean 14.53% (SD = 0.38%) < p95 14.93%
Memory available percentage
Percentage of available memory
p5 85.07% < mean 85.47% (SD = 0.38%) < p95 85.9%
Max host memory used
Maximum memory usage percentage across all hosts
max 14.53%
Max host swap used percentage
Maximum swap space usage percentage across all hosts
max 0.04%
Memory growth rate
Rate of memory growth over time
growth -59.27MB/s
Disk read throughput
Disk read throughput in MB/s
0.00MB/s
Disk write throughput
Disk write throughput in MB/s
6.04MB/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
1.78
5 min
0.95
15 min
0.41
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 0.2% < mean 0.591% (SD = 0.306%) < p95 1.44%
60 second average
0.5316%
300 second average
0.2723%
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 7.88% < mean 31.2887% (SD = 9.5772%) < p95 47.07%
60 second average
26.4810%
300 second average
13.4168%
I/O pressure full
I/O pressure (all tasks stalled) over 10, 60 and 300 second averages
10 second average
p5 7.04% < mean 28.9226% (SD = 9.1087%) < p95 44.27%
60 second average
24.4835%
300 second average
12.4458%
Holochain process CPU usage
CPU usage by Holochain process
p5 5.84% < mean 13.06% (SD = 8.09%) < p95 15.42%
Holochain process memory (PSS)
Proportional Set Size memory of Holochain process
p5 1.49 KiB < mean 225.26 KiB (SD = 58.51 KiB) < p95250.88 KiB
Holochain process threads
Number of threads in Holochain process
p5 1 threads < mean 13.45 threads (SD = 3.47 threads) < p95 15 threads
Holochain process file descriptors
Number of file descriptors used by Holochain process
p5 8 file descriptors < mean 55.82 file descriptors (SD = 14.95 file descriptors) < p95 66 file descriptors

Write/Read

Creates an entry and reads it back, then repeats.

Started
Wed, 25 Mar 2026 09:20:42 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_23533241325
Write timing
The time taken to write the entry.
mean 0.020775s (SD = 0.009442s) p50 0.019443s p95 0.037451s p99 0.048775s
Write rate
The number of writes completed per second.
mean 197.52/s
Read timing
The time taken to read the entry.
mean 0.0294s (SD = 0.018005s) p50 0.02492s p95 0.060933s p99 0.06946s
Read rate
The number of reads completed per second.
mean 197.52/s
Error count
The number of errors accumulated over the run.
0
Host Metrics
User CPU usage
CPU usage by user space
22.71%
Network receive rate (primary)
Rate of bytes received on primary network interface
p5 16 B/s < mean 19.88 KiB/s (SD = 105.98 KiB/s) ≤ p951.91 KiB/s
Network send rate (primary)
Rate of bytes sent on primary network interface
p5 14 B/s < mean 881 B/s (SD = 3.67 KiB/s) ≤ p95799 B/s
Total bytes received
Total bytes received on primary network interface
count
5.82 MiB
mean
19.88 KiB/s
Total bytes sent
Total bytes sent on primary network interface
count
258.17 KiB
mean
881 B/s
CPU spike anomaly
CPU spike anomaly was detected
NotDetected
Memory leak anomaly
Memory leak anomaly was detected
Detected

Warning Memory growing at 6.35 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 21.2% < mean 25.44% (SD = 2.11%) < p95 26.99%
System
2.73%
CPU percentiles
CPU usage percentiles
p50
25.64%
p95
26.99%
p99
32.63%
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 6.43% < mean 6.53% (SD = 0.34%) < p95 6.85%
Memory available percentage
Percentage of available memory
p5 93.15% < mean 93.47% (SD = 0.34%) < p95 93.57%
Max host memory used
Maximum memory usage percentage across all hosts
max 6.53%
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 6.35MB/s
Disk read throughput
Disk read throughput in MB/s
0.00MB/s
Disk write throughput
Disk write throughput in MB/s
16.38MB/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
1.50
5 min
0.66
15 min
0.26
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% (SD = 0%) ≤ p95 0%
60 second average
0.0000%
300 second average
0.0000%
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 0.0316% (SD = 0.0739%) < p95 0.26%
60 second average
0.0297%
300 second average
0.0081%
I/O pressure full
I/O pressure (all tasks stalled) over 10, 60 and 300 second averages
10 second average
p5 0% < mean 0.0255% (SD = 0.0621%) < p95 0.19%
60 second average
0.0245%
300 second average
0.0052%
Holochain process CPU usage
CPU usage by Holochain process
p5 18.36% < mean 23.81% (SD = 4.79%) < p95 26.47%
Holochain process memory (PSS)
Proportional Set Size memory of Holochain process
p5 242.75 KiB < mean 254.06 KiB (SD = 6.30 KiB) < p95262.33 KiB
Holochain process threads
Number of threads in Holochain process
p5 16 threads < mean 16.42 threads (SD = 2.83 threads) < p95 17 threads
Holochain process file descriptors
Number of file descriptors used by Holochain process
p5 61 file descriptors < mean 62.68 file descriptors (SD = 11.76 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
Wed, 25 Mar 2026 09:22:32 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_23533241325
Write timing
The time it takes to complete the zome function call that writes the entry, updates it, and links to the update.
mean 0.082329s (SD = 0.222493s) p50 0.02703s p95 0.341435s p99 1.353407s
Write rate
The number of write zome function calls that complete per second.
mean 44.21/s
Read timing
The time it takes to complete the zome function call that reads the data.
mean 0.141734s (SD = 0.351554s) p50 0.047991s p95 0.406474s p99 2.11584s
Read rate
The number of read zome function calls that complete per second.
mean 44.18/s
Error count
The number of errors accumulated over the run.
0
Host Metrics
User CPU usage
CPU usage by user space
8.96%
Network receive rate (primary)
Rate of bytes received on primary network interface
p5 16.47 KiB/s < mean 19.39 KiB/s (SD = 2.32 KiB/s) < p9525.18 KiB/s
Network send rate (primary)
Rate of bytes sent on primary network interface
p5 14.84 KiB/s < mean 17.81 KiB/s (SD = 2.22 KiB/s) < p9523.26 KiB/s
Total bytes received
Total bytes received on primary network interface
count
5.68 MiB
mean
19.39 KiB/s
Total bytes sent
Total bytes sent on primary network interface
count
5.22 MiB
mean
17.81 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 7.83% < mean 11.94% (SD = 6.13%) < p95 15.33%
System
2.98%
CPU percentiles
CPU usage percentiles
p50
10.75%
p95
15.33%
p99
42.81%
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 12.59% < mean 14.96% (SD = 0.85%) < p95 15.63%
Memory available percentage
Percentage of available memory
p5 84.37% < mean 85.04% (SD = 0.85%) < p95 87.41%
Max host memory used
Maximum memory usage percentage across all hosts
max 14.96%
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 -162.74MB/s
Disk read throughput
Disk read throughput in MB/s
0.00MB/s
Disk write throughput
Disk write throughput in MB/s
11.11MB/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
1.67
5 min
0.93
15 min
0.45
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 0.0248% (SD = 0.0946%) < p95 0.18%
60 second average
0.0242%
300 second average
0.1239%
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 5.22% < mean 22.9968% (SD = 9.1499%) < p95 35.12%
60 second average
17.9839%
300 second average
8.4948%
I/O pressure full
I/O pressure (all tasks stalled) over 10, 60 and 300 second averages
10 second average
p5 5.22% < mean 22.3755% (SD = 8.8528%) < p95 34.12%
60 second average
17.4755%
300 second average
8.2529%
Holochain process CPU usage
CPU usage by Holochain process
p5 5.24% < mean 9.47% (SD = 6.32%) < p95 13.25%
Holochain process memory (PSS)
Proportional Set Size memory of Holochain process
p5 200.77 KiB < mean 508.27 KiB (SD = 84.03 KiB) < p95532.22 KiB
Holochain process threads
Number of threads in Holochain process
p5 17 threads < mean 17.39 threads (SD = 0.79 threads) < p95 18 threads
Holochain process file descriptors
Number of file descriptors used by Holochain process
p5 54 file descriptors < mean 65.42 file descriptors (SD = 5.98 file descriptors) < p95 72 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
Wed, 25 Mar 2026 09:24:32 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_23533241325
Call timing
The time taken for the call to complete.
mean 0.004131s (SD = 0.00114s) p50 0.003984s p95 0.005101s p99 0.006784s
Call rate
The number of zome calls completed per second.
mean 2397.71/s
Error count
The number of errors accumulated during the run.
0
Host Metrics
User CPU usage
CPU usage by user space
15.86%
Network receive rate (primary)
Rate of bytes received on primary network interface
p5 1.11 KiB/s < mean 10.23 KiB/s (SD = 4.38 KiB/s) < p9513.23 KiB/s
Network send rate (primary)
Rate of bytes sent on primary network interface
p5 26.62 KiB/s < mean 42.68 KiB/s (SD = 29.94 KiB/s) < p9556.77 KiB/s
Total bytes received
Total bytes received on primary network interface
count
2.90 MiB
mean
10.23 KiB/s
Total bytes sent
Total bytes sent on primary network interface
count
12.09 MiB
mean
42.68 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 29.83% < mean 35.04% (SD = 2.52%) < p95 37.06%
System
19.17%
CPU percentiles
CPU usage percentiles
p50
36.20%
p95
37.06%
p99
37.45%
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 17.84% < mean 20.78% (SD = 1.6%) < p95 22.02%
Memory available percentage
Percentage of available memory
p5 77.98% < mean 79.22% (SD = 1.6%) < p95 82.16%
Max host memory used
Maximum memory usage percentage across all hosts
max 20.78%
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 -325.49MB/s
Disk read throughput
Disk read throughput in MB/s
0.00MB/s
Disk write throughput
Disk write throughput in MB/s
5.23MB/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
1.65
5 min
0.98
15 min
0.50
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 2.4% < mean 4.2723% (SD = 0.8013%) < p95 4.87%
60 second average
4.0710%
300 second average
2.4837%
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 0.0127% (SD = 0.038%) < p95 0.08%
60 second average
0.0100%
300 second average
0.0003%
I/O pressure full
I/O pressure (all tasks stalled) over 10, 60 and 300 second averages
10 second average
p5 0% < mean 0.0127% (SD = 0.038%) < p95 0.08%
60 second average
0.0100%
300 second average
0.0003%
Holochain process CPU usage
CPU usage by Holochain process
p5 24.56% < mean 24.78% (SD = 0.19%) < p95 25.16%
Holochain process memory (PSS)
Proportional Set Size memory of Holochain process
p5 178.64 KiB < mean 250.51 KiB (SD = 43.41 KiB) < p95262.57 KiB
Holochain process threads
Number of threads in Holochain process
p5 12 threads < mean 12.06 threads (SD = 0.8 threads) ≤ p95 12 threads
Holochain process file descriptors
Number of file descriptors used by Holochain process
p5 46 file descriptors < mean 48.29 file descriptors (SD = 10.2 file descriptors) < p95 64 file descriptors