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ASF GitHub Bot commented on ARTEMIS-1185: ----------------------------------------- Github user clebertsuconic commented on the issue: https://github.com/apache/activemq-artemis/pull/1295 @franz1981 the only reason I didn't merge this is that this would be a hidden feature... no docs.. can you add a doc chapter about this? > 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. -- This message was sent by Atlassian JIRA (v6.4.14#64029)