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[fix](memtracker) Fix thread mem tracker try consume accuracy #12782

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merged 1 commit into from
Sep 21, 2022

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xinyiZzz
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@xinyiZzz xinyiZzz commented Sep 20, 2022

Proposed changes

Issue Number: close #xxx

Problem summary

When the thread mem tracker try consume fails, an error msg will be generated, and the error msg will be returned after forcibly consume.

Temporary memory requests during the generation of error msg will be tracked by errors, causing the final value of the process mem tracker to become larger.

fix:

  1. Avoid temporary memory tracking during Hook;
  2. Reduce temporary memory alloc;

Checklist(Required)

  1. Does it affect the original behavior:
    • Yes
    • No
    • I don't know
  2. Has unit tests been added:
    • Yes
    • No
    • No Need
  3. Has document been added or modified:
    • Yes
    • No
    • No Need
  4. Does it need to update dependencies:
    • Yes
    • No
  5. Are there any changes that cannot be rolled back:
    • Yes (If Yes, please explain WHY)
    • No

Further comments

If this is a relatively large or complex change, kick off the discussion at dev@doris.apache.org by explaining why you chose the solution you did and what alternatives you considered, etc...

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LGTM

@github-actions github-actions bot added the approved Indicates a PR has been approved by one committer. label Sep 20, 2022
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PR approved by at least one committer and no changes requested.

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PR approved by anyone and no changes requested.

@yiguolei yiguolei merged commit bd4bfa8 into apache:master Sep 21, 2022
xinyiZzz added a commit to xinyiZzz/incubator-doris that referenced this pull request Sep 22, 2022
xinyiZzz added a commit that referenced this pull request Sep 22, 2022
* [fix][memtracker] remove gc and fix print

* [fix](memory) Fix BE OOM when load -238 fail

* [fix](memtracker) Process physical mem check does not include tc/jemalloc allocator cache (#12688)

tcmalloc/jemalloc allocator cache does not participate in the mem check as part of the process physical memory.

because new/malloc will trigger mem hook when using tcmalloc/jemalloc allocator cache, but it may not actually alloc physical memory, which is not expected in mem hook fail.

in addition:

The value of tcmalloc/jemalloc allocator cache is used as a mem tracker, the parent is the process mem tracker, which is updated every 1s.
Modify the process default mem_limit to 90%. expect mem tracker to effectively limit the memory usage of the process.

* Fix memory leak by calling  in mem hook (#12708)

After the consume mem tracker exceeds the mem limit in the mem hook, the boost stacktrace will be printed. A query/load will only be printed once, and the process tracker will only be printed once per second.

After the process memory reaches the upper limit, the boost stacktrace will be printed every second. The observed phenomena are as follows:

After query/load is canceled, the memory increases instantly;
tcmalloc profile total physical memory is less than perf process memory;
The process mem tracker is smaller than the perf process memory;

* [fix](memtracker) Fix thread mem tracker try consume accuracy #12782

* [Bugfix](mem) Fix memory limit check may overflow (#12776)

This bug is because the result of subtracting signed and unsigned numbers may overflow if it is negative.

Co-authored-by: Zhengguo Yang <yangzhgg@gmail.com>
FreeOnePlus pushed a commit to FreeOnePlus/doris that referenced this pull request Oct 8, 2022
FreeOnePlus pushed a commit to FreeOnePlus/doris that referenced this pull request Oct 8, 2022
FreeOnePlus pushed a commit to FreeOnePlus/doris that referenced this pull request Oct 8, 2022
FreeOnePlus pushed a commit to FreeOnePlus/doris that referenced this pull request Oct 8, 2022
FreeOnePlus pushed a commit to FreeOnePlus/doris that referenced this pull request Oct 8, 2022
FreeOnePlus pushed a commit to FreeOnePlus/doris that referenced this pull request Oct 8, 2022
@yiguolei yiguolei mentioned this pull request Oct 9, 2022
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3 participants