Jacek Lewandowski created CASSANDRA-18871:
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Summary: JMH benchmark improvements
Key: CASSANDRA-18871
URL: https://issues.apache.org/jira/browse/CASSANDRA-18871
Project: Cassandra
Issue Type: Improvement
Components: Build, Legacy/Tools
Reporter: Jacek Lewandowski
1. CASSANDRA-12586 introduced {{build-jmh}} task which builds uber jar for JMH
benchmarks which is then not used with {{ant microbench}} task. It is used
though by the {{test/bin/jmh}} script.
In fact, I have no idea why we should use uber jar if JMH can perfectly run
with a regular classpath. Maybe that had something to do with older JMH version
which was used that time. Building uber jars takes time and is annoying. Since
it seems to be redundant anyway, I'm going to remove it and fix
{{test/bin/jmh}} to use a regular classpath.
2. I'll add support for async profiler in benchmarks. That is, the
{{microbench}} target automatically fetches the async profiler binaries and
adds the necessary args for JMH ({{-prof asyc...}} in particular) whenever
{{-Dtest.profiler=...}} is specified. If that property is fed with the empty
value, some default options will be applied (defined in the script, can be
negotiated). Otherwise, whatever is passed to the {{test.profiler}} property
will be added as profiler options.
3. If someone wants to see any additional improvements, please comment on the
ticket.
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