[
https://issues.apache.org/jira/browse/SOLR-15133?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17281872#comment-17281872
]
Mike Drob commented on SOLR-15133:
----------------------------------
I think [https://shipilev.net/jvm/anatomy-quarks/2-transparent-huge-pages/] is
a better explainer of what is going on, including the difference between
{{UseLargePages}} and {{UseTransparentHugePages}}.
Keeping this enabled for heaps beyond 1G (which is most Solr heaps IME),
appears to be beneficial, when the system supports it.
Now for the wrinkle... I believe both hugetlbfs and THP are reliant on kernel
settings/parameters, and docker images don't have kernels themselves. MacOS
doesn't support Large Pages
([https://bugs.openjdk.java.net/browse/JDK-8233062)] which suggests that
processes running in Docker for Mac wouldn't either. I don't know if this holds
true for Windows/Linux as well, or if the docker engines there are able to
delegate that memory management request.
> Document how to eliminate Failed to reserve shared memory warning
> -----------------------------------------------------------------
>
> Key: SOLR-15133
> URL: https://issues.apache.org/jira/browse/SOLR-15133
> Project: Solr
> Issue Type: Improvement
> Security Level: Public(Default Security Level. Issues are Public)
> Components: Docker, documentation
> Affects Versions: 8.7
> Reporter: David Eric Pugh
> Assignee: David Eric Pugh
> Priority: Minor
> Fix For: master (9.0)
>
> Time Spent: 1h 10m
> Remaining Estimate: 0h
>
> inspired by a conversation on
> [https://github.com/docker-solr/docker-solr/issues/273,] it would be good to
> document how to get rid of shared memory warning in Docker setups.
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
