App Install
↑ Back to indexMeasure 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.
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minimal(1 agent)
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Warning CPU p99 reached 91.1%
Warning 100% of hosts overloaded (load5/ncpus > 1.0)
/etc/hostname/etc/hosts/etc/resolv.confApp Install
↑ Back to indexMeasure 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.
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large(1 agent)
Holochain MetricsClick to toggle visibility.
Host MetricsClick to toggle visibility.
Warning CPU p99 reached 96.8%
Warning 100% of hosts overloaded (load5/ncpus > 1.0)
/etc/nomad.d/client-meta.jsonDHT Sync Lag
↑ Back to indexMeasures the lag time between an agent publishing data and other peers being able to see it. This scenario has two roles:
write: Creates entries with a timestamp field, linked to a known base hash so thatrecord_lagagents can discover them.record_lag: Repeatedly queries for links from the known base hash. When a new entry is discovered, it calculates the time difference between the entry's timestamp and the current time, giving the sync lag for that entry.
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record_lag(1 agent) -
write(1 agent)
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Warning CPU p99 reached 97.9%
Warning Memory growing at 705.04 MiB/s
Warning 70% of hosts overloaded (load5/ncpus > 1.0)
//efi-boot/etc/hostname/etc/hosts/etc/nomad.d/client-meta.json/etc/resolv.conf/nix/storeFirst Call
↑ Back to indexThis 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.
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default(1 agent)
init.Holochain MetricsClick to toggle visibility.
Host MetricsClick to toggle visibility.
Warning CPU p99 reached 98.0%
Warning Memory growing at 849.00 MiB/s
/etc/hostname/etc/hosts/etc/resolv.confLocal Signals
↑ Back to indexThis 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.
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default(1 agent)
Holochain MetricsClick to toggle visibility.
Host MetricsClick to toggle visibility.
Warning CPU p99 reached 98.0%
Warning 100% of hosts overloaded (load5/ncpus > 1.0)
/etc/hostname/etc/hosts/etc/resolv.confMixed Arc get_agent_activity
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A mixed-arc scenario that measures the DHT's ability to propagate agent activity and make it available via get_agent_activity calls. The scenario has three roles:
zero_write: A zero-arc conductor that creates entries on its source chain.full_write: A full-arc conductor that creates entries on its source chain.zero_read: A zero-arc conductor that picks a random writer and repeatedly callsget_agent_activityto observe new entries appearing on the writer's chain, measuring the lag between creation and discovery.
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full_write(1 agent) -
zero_read(1 agent) -
zero_write(1 agent)
get_agent_activity. This is measured per new action in the chain.get_agent_activity_full zome call timingget_agent_activity_full zome call that queries a writer's chain.get_agent_activity.behaviour:full_write
behaviour:zero_read
behaviour:zero_write
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Warning CPU p99 reached 96.6%
Warning Memory growing at 495.68 MiB/s
Warning 32% of hosts overloaded (load5/ncpus > 1.0)
//efi-boot/etc/hostname/etc/hosts/etc/nomad.d/client-meta.json/etc/resolv.conf/nix/storeMixed Arc must_get_agent_activity
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A scenario where write agents create entries in batches of 10, while must_get_agent_activity agents each pick a random write agent and repeatedly attempt to create an entry that references the chain top of their latest batch. This reference means that the entry's validation function needs to make a must_get_agent_activity call.
The purpose of this scenario is to measure the time it takes for published agent activity data to be gossiped among authorities and become available to peers that query it via must_get_agent_activity.
This test is similar to Write Validated must_get_agent_activity, but some write agents are zero-arc and all must_get_agent_activity agents are zero-arc. This forces the must_get_agent_activity host call to go to the network.
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full_write(1 agent) -
zero_must_get_agent_activity(1 agent) -
zero_write(1 agent)
action_seqwrite agent, aggregated across all reading agents. The reading dimension is collapsed by taking the maximum observed value for each write agent (any successful read counts as propagation). This reflects the DHT’s ability to propagate agent activity ops and make them available to querying peers.write agent's creation of a batch and a must_get_agent_activity agent's successful discovery of the batch and creation/self-validation of a new entry that depends on it.must_get_agent_activity agent was able to discover batches and create/self-validate new entries that depend on them.create_validated_sample_entry zome call timingwrite agent's source chain.must_get_agent_activity calls.behaviour:full_write
behaviour:zero_must_get_agent_activity
behaviour:zero_write
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Warning CPU p99 reached 95.4%
Warning Memory growing at 281.07 MiB/s
Warning 18% of hosts overloaded (load5/ncpus > 1.0)
//efi-boot/etc/hostname/etc/hosts/etc/nomad.d/client-meta.json/etc/resolv.conf/nix/storeRemote Call Rate
↑ Back to indexTest 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.
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default(1 agent)
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Host MetricsClick to toggle visibility.
Warning CPU p99 reached 90.4%
Warning Memory growing at 1388.36 MiB/s
/etc/hostname/etc/hosts/etc/nomad.d/client-meta.json/etc/resolv.confRemote Signals
↑ Back to indexThis scenario tests the throughput of remote_signals operations.
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default(1 agent)
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Warning CPU p99 reached 91.0%
Warning Memory growing at 606.36 MiB/s
/etc/hostname/etc/hosts/etc/nomad.d/client-meta.json/etc/resolv.confSingle-write, many-read
↑ Back to indexCreates 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.
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default(1 agent)
read call timingread call rateHolochain MetricsClick to toggle visibility.
Host MetricsClick to toggle visibility.
Warning Memory growing at 545.89 MiB/s
/etc/hostname/etc/hosts/etc/resolv.confValidation Receipts
↑ Back to indexCreates 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.
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default(1 agent)
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Host MetricsClick to toggle visibility.
Warning Memory growing at 88.49 MiB/s
//efi-boot/etc/hostname/etc/hosts/etc/nomad.d/client-meta.json/etc/resolv.conf/nix/storeWrite/get_agent_activity
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A scenario where write peers write entries, while get_agent_activity peers each query a single write agent's activity with get_agent_activity.
Before a target write peer and the requesting get_agent_activity peer are in sync, this will measure the get_agent_activity call performance over a network. Once a write peer reaches sync with a get_agent_activity peer, the write peer will publish their actions and entries, and so the get_agent_activity calls will likely have most of the data they need locally. At that point this measures the database query performance and code paths through host functions.
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get_agent_activity(1 agent) -
write(1 agent)
get_agent_activity_full zome call timingwrite peer's source chain.Holochain MetricsClick to toggle visibility.
Host MetricsClick to toggle visibility.
Warning CPU p99 reached 98.3%
Warning Memory growing at 288.95 MiB/s
Warning 50% of hosts overloaded (load5/ncpus > 1.0)
//efi-boot/etc/hostname/etc/hosts/etc/nomad.d/client-meta.json/etc/resolv.conf/nix/storeWrite/get_agent_activity with volatile conductors
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A scenario where write peers write entries, while get_agent_activity_volatile peers each query a single write agents activity with get_agent_activity but shutdown and restart their conductors at semi-random intervals.
Before a target write peer and the requesting get_agent_activity_volatile peer are in sync, this will measure the get_agent_activity call performance over a network. Once a write peer reaches sync with a get_agent_activity peer, the write peer will publish their actions and entries, and so the get_agent_activity calls will likely have most of the data they need locally. At that point this measures the database query performance and code paths through host functions.
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get_agent_activity_volatile(1 agent) -
write(1 agent)
action_seqget_agent_activity. This reflects the DHT's ability to propagate agent activity ops and make them available to querying peers.get_agent_activity_full zome call timingwrite peer's source chain.get_agent_activity_volatile peers.get_agent_activity_volatile conductor.get_agent_activity_volatile conductor was running before being stopped.get_agent_activity_volatile conductor was stopped before being started again.get_agent_activity_volatile peer reach their target arc in the moment before they were shutdown.get_agent_activity_volatile_agent:uhCAk-jcixXPAfAQkYqyZXKtp9l7cIRmGoHUcUPQX-ykShua0w8an
get_agent_activity_volatile_agent:uhCAk6BNOVyCa_OKDxGNNOXcgxG8IqnceQbrKFda3EI8C6FZTg-eJ
get_agent_activity_volatile_agent:uhCAk6xoPAhlt8aUzI2RXSeeYEzbr7oeq86GH3ciK9ZzKGiSmoeuY
get_agent_activity_volatile_agent:uhCAk8OJSFYtvmgJHHm0yfPObKl56UTC5dH9N90ISZw0-yMU2rjIM
get_agent_activity_volatile_agent:uhCAk8Y6dZLrYxmZtq6cEt7f5tcbBru11rjW_bDFhd364VNV9lD34
get_agent_activity_volatile_agent:uhCAk9NVL6AJzYSiL0fnD1nok5wD0RTWPVi1dx5F6pSb8nGb60EON
get_agent_activity_volatile_agent:uhCAkDTYqImbUFnpgv-7kiLKFD6h78DYMYhjUcldbFX34ke1gEZT0
get_agent_activity_volatile_agent:uhCAkIe1Kd0g95Pp3LnrWngZkTXjAkmt7R1IPaOgYnFw8RhT1JTjK
get_agent_activity_volatile_agent:uhCAkRk1uQoY9l1wOiIz_2wmeMFopdmRA8kMmmOcCr0azW_wdoouu
get_agent_activity_volatile_agent:uhCAkSUJ5DpnM-wP5sv4QyEH1A7R3qkpV4EJ9T7Ftz8esxMS0b2wI
get_agent_activity_volatile_agent:uhCAkVgepd3MEWO2j73JcYPV7z_bdlDYPITZlwymTLQ4yPrJjjC_X
get_agent_activity_volatile_agent:uhCAkYziRAg5FyyFXU2EUk0fIYQyyIPgVa7U1dDX1iAtHknPOvYYT
get_agent_activity_volatile_agent:uhCAkabSQF6DGxrXHjwSiOiRtGhm0jOiKd9gpFovBP4qstPOEXryf
get_agent_activity_volatile_agent:uhCAkdF0MmSOc2fN3Pl59s0JJkgum7JwJtfrec7pjvslDj3c0LTFs
get_agent_activity_volatile_agent:uhCAkdZyppTVL1vRAusVl8vwzmj3tqTfAQJP4KRbBschU1YOJGWyt
get_agent_activity_volatile_agent:uhCAke6MKXvfOnguBWt37zg_l_7nDEIWulsE4LeNWhIuu_f0jfkjT
get_agent_activity_volatile_agent:uhCAkfWwAdKSV7hHOZcUnlsBzkNbrqXSCiVgEbWB8ymR1whfQiPhc
get_agent_activity_volatile_agent:uhCAkizrk73dAeEweTGdZw_klIoLMXEsN5vMvtjoDd6ZsVTR8Fowb
get_agent_activity_volatile_agent:uhCAkxvmdJtA6IItRZY1g8xZpxaT25lrcxbcCtI2ruOLC9wtNgQZ7
Holochain MetricsClick to toggle visibility.
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Warning CPU p99 reached 98.8%
Warning Memory growing at 445.81 MiB/s
Warning 25% of hosts overloaded (load5/ncpus > 1.0)
//efi-boot/etc/hostname/etc/hosts/etc/nomad.d/client-meta.json/etc/resolv.conf/nix/storeWrite/Query
↑ Back to indexCreates an entry, then queries the source chain and performs a simple operation on the entries, then repeats.
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default(1 agent)
chain_query_count_len zome call that queries the source chain.Holochain MetricsClick to toggle visibility.
Host MetricsClick to toggle visibility.
Warning Memory growing at 40.67 MiB/s
/etc/hostname/etc/hosts/etc/resolv.confWrite/Read
↑ Back to indexCreates an entry and reads it back, then repeats.
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default(1 agent)
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Warning CPU p99 reached 91.2%
Warning Memory growing at 97.39 MiB/s
/etc/nomad.d/client-meta.jsonWrite validated
↑ Back to indexCreates an entry, updates it and links the create to the update, then repeats. Each of the three actions is validated by the included hApp.
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default(1 agent)
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Warning Memory growing at 88.06 MiB/s
/etc/hostname/etc/hosts/etc/resolv.confWrite Validated must_get_agent_activity
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A scenario where write agents create entries in batches of 10, while must_get_agent_activity agents each pick a random write agent and repeatedly attempt to create an entry that references the chain top of their latest batch. This reference means that the entry's validation function needs to make a must_get_agent_activity call.
The purpose of this scenario is to measure the time it takes for published agent activity data to be gossiped among authorities and become available to peers that query it via must_get_agent_activity.
This test is similar to Mixed-Arc must_get_agent_activity, but all agents are full-arc.
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must_get_agent_activity(1 agent) -
write(1 agent)
action_seqwrite agent, aggregated across all reading agents. The reading dimension is collapsed by taking the maximum observed value for each write agent (any successful read counts as propagation). This reflects the DHT’s ability to propagate agent activity ops and make them available to querying peers.write agent's creation of a batch and a must_get_agent_activity agent's successful discovery of the batch and creation/self-validation of a new entry that depends on it.must_get_agent_activity agent was able to discover batches and create/self-validate new entries that depend on them.create_validated_sample_entry zome call timingwrite agent's source chain.must_get_agent_activity calls.Holochain MetricsClick to toggle visibility.
Host MetricsClick to toggle visibility.
Warning CPU p99 reached 97.7%
Warning Memory growing at 262.29 MiB/s
Warning 32% of hosts overloaded (load5/ncpus > 1.0)
//efi-boot/etc/hostname/etc/hosts/etc/nomad.d/client-meta.json/etc/resolv.conf/nix/storeZero-Arc Create and Read
↑ Back to indexA zero-arc/full-arc mixed scenario with two types of zero-arc nodes -- ones that create data and ones that read data -- as well as full arc nodes to "relay" the data. The scenario has three roles:
zero_write: A zero-arc conductor that just creates entries with a timestamp field. Those entries are linked to a known base hash so thatzero_readnodes can retrieve them.zero_read: A zero-arc conductor that reads the entries created by the zero-arc node(s) and records the time lag between when the entry had been created and when it was first discovered.full: A full-arc conductor that is just here to serve entries to zero arc nodes.
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full(1 agent) -
zero_read(1 agent) -
zero_write(1 agent)
get_timed_entries_network zome function.Holochain MetricsClick to toggle visibility.
Host MetricsClick to toggle visibility.
Warning CPU p99 reached 97.2%
Warning Memory growing at 395.43 MiB/s
Warning 14% of hosts overloaded (load5/ncpus > 1.0)
//efi-boot/etc/hostname/etc/hosts/etc/nomad.d/client-meta.json/etc/resolv.conf/nix/storeZero-Arc Create Data
↑ Back to indexzero: A zero-arc conductor that just creates entries with a timestamp field. Those entries are linked to a known base hash so that full-arc nodes can retrieve them.full: A full-arc conductor that reads the entries created by the zero-arc node(s) and records the time lag between when the entry had been created and when it was first discovered.
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full(1 agent) -
zero(1 agent)
get_timed_local_entries zome function.Holochain MetricsClick to toggle visibility.
Host MetricsClick to toggle visibility.
Warning CPU p99 reached 96.2%
Warning Memory growing at 409.32 MiB/s
Warning 7% of hosts overloaded (load5/ncpus > 1.0)
//efi-boot/etc/hostname/etc/hosts/etc/nomad.d/client-meta.json/etc/resolv.conf/nix/storeZome Call, Single Value
↑ Back to indexCalls 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.
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default(1 agent)
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/etc/hostname/etc/hosts/etc/resolv.conf