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https://issues.apache.org/jira/browse/ARTEMIS-3922?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17597965#comment-17597965
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ASF subversion and git services commented on ARTEMIS-3922:
----------------------------------------------------------
Commit 6482805f7d88f400c58580fe1fb78333cf27f087 in activemq-artemis's branch
refs/heads/main from Rico Neubauer
[ https://gitbox.apache.org/repos/asf?p=activemq-artemis.git;h=6482805f7d ]
ARTEMIS-3922 Reducing contention on Throwable#getOurStackTrace
By allowing to pass caller's classname directly to
org.apache.activemq.artemis.utils.ActiveMQThreadFactory#defaultThreadFactory
instead of calculating it from stack.
> Reducing contention on java.lang.Throwable#getOurStackTrace
> -----------------------------------------------------------
>
> Key: ARTEMIS-3922
> URL: https://issues.apache.org/jira/browse/ARTEMIS-3922
> Project: ActiveMQ Artemis
> Issue Type: Improvement
> Affects Versions: 2.24.0
> Reporter: Rico Neubauer
> Priority: Major
> Attachments: threads.txt
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> This is a request for improvement rg. performance in a very specific case,
> but easy to accomplish.
> h2. Scenario
> On certain contaier'ed Windows machines we have identified that
> {{java.lang.Throwable#getOurStackTrace}} along with
> {{java.lang.StackTraceElement#initStackTraceElements}} show up as a very
> expensive operations. The reason behind this is still unclear, but since the
> {{#getOurStackTrace}} is synchronized, it suffers even more when the native
> method {{#initStackTraceElements}} takes an unexpected long time.
> This shows in thread-dumps in 2 locations for Artemis, where
> connection-creation is the more crucial one from my pov.
> See attached threads.txt
> h2. Remedy
> Fortunately the location where this gets used via
> {{Thread.currentThread().getStackTrace()}} is simple to replace, since the
> information needed could just get passed by caller.
> Please see attached patch for my proposal.
> Also available [here as
> commit|https://github.com/seeburger-ag/activemq-artemis/commit/7396b9356256706a886f35da3a27274084e5a973].
> Can create a pull request as well.
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