yiguolei opened a new pull request, #64414:
URL: https://github.com/apache/doris/pull/64414
]Issue Number: close #xxx
Related PR: #xxx
Problem Summary:
Sometimes we may see this errors in cgroup or k8s environment. Allocator sys
memory check failed: Cannot alloc:5343, ...,process memory used 85.41 GB exceed
limit 108.00 GB or sys available memory 5.88 GB less than low water mark 6.00
GB.
The mem_limit term is false (85.41 < 108). The 5343-byte allocation is
rejected only by sys available memory 5.88 GB < low water mark 6.00 GB. 5.88
GiB available implies cgroup_mem_usage of about 114 GiB, roughly 29 GiB above
process memory used (85.41 GiB); that gap is unmapped read page cache. The
kernel reclaims clean page cache before OOM, so the memory is available, but
Doris cannot reclaim it and the rejection repeats on later allocations. (low
water mark 6.00 GB is the default: min(120 - 108, 120 * 5%) = 6.)
Before this PR, cgroup_mem_usage = memory.current - inactive_file -
slab_reclaimable. So some active files page cache is not treated as recycleable
memory. So cgroup_mem_usage is a bit larger than RSS.
None
- Test <!-- At least one of them must be included. -->
- [ ] Regression test
- [ ] Unit Test
- [ ] Manual test (add detailed scripts or steps below)
- [ ] No need to test or manual test. Explain why:
- [ ] This is a refactor/code format and no logic has been changed.
- [ ] Previous test can cover this change. - [ ] No code files have
been changed. - [ ] Other reason <!-- Add your reason? -->
- Behavior changed:
- [ ] No.
- [ ] Yes. <!-- Explain the behavior change -->
- Does this need documentation?
- [ ] No.
- [ ] Yes. <!-- Add document PR link here. eg:
https://github.com/apache/doris-website/pull/1214 -->
- [ ] Confirm the release note
- [ ] Confirm test cases
- [ ] Confirm document
- [ ] Add branch pick label <!-- Add branch pick label that this PR should
merge into -->
### What problem does this PR solve?
Issue Number: close #xxx
Related PR: #xxx
Problem Summary:
### Release note
None
### Check List (For Author)
- Test <!-- At least one of them must be included. -->
- [ ] Regression test
- [ ] Unit Test
- [ ] Manual test (add detailed scripts or steps below)
- [ ] No need to test or manual test. Explain why:
- [ ] This is a refactor/code format and no logic has been changed.
- [ ] Previous test can cover this change.
- [ ] No code files have been changed.
- [ ] Other reason <!-- Add your reason? -->
- Behavior changed:
- [ ] No.
- [ ] Yes. <!-- Explain the behavior change -->
- Does this need documentation?
- [ ] No.
- [ ] Yes. <!-- Add document PR link here. eg:
https://github.com/apache/doris-website/pull/1214 -->
### Check List (For Reviewer who merge this PR)
- [ ] Confirm the release note
- [ ] Confirm test cases
- [ ] Confirm document
- [ ] Add branch pick label <!-- Add branch pick label that this PR should
merge into -->
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: [email protected]
For queries about this service, please contact Infrastructure at:
[email protected]
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
