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Posted to issues@activemq.apache.org by "Francesco Nigro (JIRA)" <ji...@apache.org> on 2017/05/29 07:56:04 UTC

[jira] [Created] (ARTEMIS-1185) Inter-Process Journal Sampler Profiler + CLI command

Francesco Nigro created ARTEMIS-1185:
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             Summary: Inter-Process Journal Sampler Profiler + CLI command
                 Key: ARTEMIS-1185
                 URL: https://issues.apache.org/jira/browse/ARTEMIS-1185
             Project: ActiveMQ Artemis
          Issue Type: New Feature
          Components: Broker
            Reporter: Francesco Nigro
            Assignee: Francesco Nigro
            Priority: Minor


It provides a sampling profiler on buffered ASYNCIO/NIO based journals.

The profiling has a minimal cost in term of CPU time for each sample (the dominant costs are System.nanoTime() and a single cache line invalidation) and total memory footprint (~OS page size in bytes).

A proper CLI command activates a sampler to collect (ie CSV) the profiled data, showing the precision of the sampling: data loss is not considered a failure condition.




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