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https://issues.apache.org/jira/browse/CASSANDRA-8897?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14564303#comment-14564303
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Stefania commented on CASSANDRA-8897:
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bq. You still need to provide it on the command line for the user profile mode.
I thought I had reproduced the exception above from the command line as well
yesterday but I can't any longer so I must have been mistaken.
bq. It looks like in the code we haven't switched RAR to requesting DBB,
You are correct the RAR was still on heap. I switched it to off heap in the
latest commit, here is a [repeat
test|http://cstar.datastax.com/tests/id/c13a2770-05cb-11e5-b028-42010af0688f].
Still not much GC difference?
> Remove FileCacheService, instead pooling the buffers
> ----------------------------------------------------
>
> Key: CASSANDRA-8897
> URL: https://issues.apache.org/jira/browse/CASSANDRA-8897
> Project: Cassandra
> Issue Type: Improvement
> Components: Core
> Reporter: Benedict
> Assignee: Stefania
> Fix For: 3.x
>
> Attachments: 8897.yaml, 9240_test_results.txt,
> snapshot-1431582436640-cpu-backtraces.png,
> snapshot-1431582436640-cpu-calltree-compression-8897.nps,
> snapshot-1431582436640-cpu-calltree-compression-trunk.nps
>
>
> After CASSANDRA-8893, a RAR will be a very lightweight object and will not
> need caching, so we can eliminate this cache entirely. Instead we should have
> a pool of buffers that are page-aligned.
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