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https://issues.apache.org/jira/browse/IGNITE-29147?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Maksim Davydov updated IGNITE-29147:
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Summary: Add allocation profiler to JMH benchmarks (was: Add an allocation
profiler that splits bytes per operation by node and thread pool)
> Add allocation profiler to JMH benchmarks
> -----------------------------------------
>
> Key: IGNITE-29147
> URL: https://issues.apache.org/jira/browse/IGNITE-29147
> Project: Ignite
> Issue Type: Test
> Reporter: Maksim Davydov
> Assignee: Maksim Davydov
> Priority: Minor
>
> The JMH benchmarks in {{modules/benchmarks}} start the client and server
> nodes in the benchmark JVM. JMH's {{-prof gc}} reports one
> bytes-per-operation number for that whole JVM, so it can't show on which node
> or in which thread pool a change adds allocation. It also undercounts the
> last iteration: the benchmarks stop their nodes in the trial teardown, which
> JMH runs before profilers read the last iteration, so the bytes of the
> stopped nodes are lost. In a cache put benchmark the last iteration drops
> from about 4,970 to about 1,080 B/op.
> This adds:
> * {{JmhAllocationProfiler}}, a JMH profiler ({{-prof}}) that reports bytes
> allocated per operation by the benchmark threads and by each thread pool of
> each node, client or server. It also reports communication messages and bytes
> sent, and discovery messages processed, per operation and node. Threads are
> grouped by the node and pool in their names.
> * {{JmhNodeStopHook}}. {{JmhCacheAbstractBenchmark}} calls it before stopping
> its nodes, so profilers see the last iteration.
> * {{JmhCacheAllocationBenchmark}}: cache put and get on atomic and
> transactional caches, through a client node with two server nodes, run with
> the profiler from its {{main()}}.
> * A README for the module: what the benchmarks measure, how to build and run
> them, how to measure allocation and how to write a benchmark.
> All changes are in {{modules/benchmarks}}.
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