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https://issues.apache.org/jira/browse/IMPALA-14874?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18087723#comment-18087723
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ASF subversion and git services commented on IMPALA-14874:
----------------------------------------------------------
Commit aac753cb3208effb6f41f916b53a17a05ed967c6 in impala's branch
refs/heads/master from Joe McDonnell
[ https://gitbox.apache.org/repos/asf?p=impala.git;h=aac753cb3 ]
IMPALA-15021: Remove duplicate tcmalloc.thread_cache_free_bytes metric
In IMPALA-14874, we introduced several tcmalloc metrics
including tcmalloc.current-total-thread-cache-bytes and
tcmalloc.thread-cache-free-bytes. These are actually the
same underlying metric, so this removes tcmalloc.thread-cache-free-bytes.
Testing:
- Ran core tests
Change-Id: I7ff431b00c10fe9ff99bfd6c909739d8a97fcf3a
Reviewed-on: http://gerrit.cloudera.org:8080/24399
Reviewed-by: Michael Smith <[email protected]>
Reviewed-by: Csaba Ringhofer <[email protected]>
Tested-by: Joe McDonnell <[email protected]>
> Add more TCMalloc metrics
> -------------------------
>
> Key: IMPALA-14874
> URL: https://issues.apache.org/jira/browse/IMPALA-14874
> Project: IMPALA
> Issue Type: Improvement
> Components: Backend
> Reporter: Quanlong Huang
> Assignee: Quanlong Huang
> Priority: Critical
> Fix For: Impala 5.0.0
>
>
> Currently, we just track the following TCMalloc metrics:
> * tcmalloc.bytes-in-use
> * tcmalloc.pageheap-free-bytes
> * tcmalloc.pageheap-unmapped-bytes
> * tcmalloc.physical-bytes-reserved
> * tcmalloc.total-bytes-reserved
> It'd be helpful to show more numeric properties from TCMalloc that should
> have minimal overhead to read. E.g.,
> * tcmalloc.current_total_thread_cache_bytes
> * tcmalloc.central_cache_free_bytes
> * tcmalloc.transfer_cache_free_bytes
> * tcmalloc.thread_cache_free_bytes
> [https://github.com/gperftools/gperftools/blob/gperftools-2.10/src/gperftools/malloc_extension.h#L185-L207]
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