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https://issues.apache.org/jira/browse/CASSANDRA-21730?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Maxim Muzafarov updated CASSANDRA-21730:
----------------------------------------
Description:
When kernel.perf_event_paranoid > 1 or kernel.kptr_restrict != 0,
AsyncProfilerService.start() fails, these are the usual values inside
containers.
Expected: Use itimer or ctimer instead of cpu when perf_events aren't usable.
{code}
[junit-timeout] Caused by: java.lang.IllegalStateException: Async-profiler
experience likely affected. Kernel symbols are unavailable due to restrictions.
Try 'sysctl kernel.perf_event_paranoid=1' and 'sysctl kernel.kptr_restrict=0'
or its variation on your system to resolve the issue.
[junit-timeout] at
org.apache.cassandra.service.StartupChecks$AsyncProfilerKernelParamsCheck.execute(StartupChecks.java:1166)
[junit-timeout] at
org.apache.cassandra.service.AsyncProfilerService$1.apply(AsyncProfilerService.java:225)
[junit-timeout] at
org.apache.cassandra.service.AsyncProfilerService.run(AsyncProfilerService.java:495)
[junit-timeout] at
org.apache.cassandra.service.AsyncProfilerService.start(AsyncProfilerService.java:219)
[junit-timeout] at
org.apache.cassandra.service.AsyncProfilerRestrictedKernelParamsTest.testStartWithRestrictedKernelParamsDoesNotFailOnKernelCheck(AsyncProfilerRestrictedKernelParamsTest.java:106)
{code}
was:
When kernel.perf_event_paranoid > 1 or kernel.kptr_restrict != 0,
AsyncProfilerService.start() fails, these are the usual values inside
containers.
Expected: Use itimer or ctimer instead of cpu when perf_events aren't usable.
> Async-profiler should fallback into itimer/ctimer in containers
> ---------------------------------------------------------------
>
> Key: CASSANDRA-21730
> URL: https://issues.apache.org/jira/browse/CASSANDRA-21730
> Project: Apache Cassandra
> Issue Type: Bug
> Reporter: Maxim Muzafarov
> Priority: Normal
>
> When kernel.perf_event_paranoid > 1 or kernel.kptr_restrict != 0,
> AsyncProfilerService.start() fails, these are the usual values inside
> containers.
> Expected: Use itimer or ctimer instead of cpu when perf_events aren't usable.
> {code}
> [junit-timeout] Caused by: java.lang.IllegalStateException: Async-profiler
> experience likely affected. Kernel symbols are unavailable due to
> restrictions. Try 'sysctl kernel.perf_event_paranoid=1' and 'sysctl
> kernel.kptr_restrict=0' or its variation on your system to resolve the issue.
> [junit-timeout] at
> org.apache.cassandra.service.StartupChecks$AsyncProfilerKernelParamsCheck.execute(StartupChecks.java:1166)
> [junit-timeout] at
> org.apache.cassandra.service.AsyncProfilerService$1.apply(AsyncProfilerService.java:225)
> [junit-timeout] at
> org.apache.cassandra.service.AsyncProfilerService.run(AsyncProfilerService.java:495)
> [junit-timeout] at
> org.apache.cassandra.service.AsyncProfilerService.start(AsyncProfilerService.java:219)
> [junit-timeout] at
> org.apache.cassandra.service.AsyncProfilerRestrictedKernelParamsTest.testStartWithRestrictedKernelParamsDoesNotFailOnKernelCheck(AsyncProfilerRestrictedKernelParamsTest.java:106)
> {code}
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