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Bug #65276

open

MDS daemon is using 50% CPU when idle

Added by Leonid Usov 28 days ago. Updated 28 days ago.

Status:
Pending Backport
Priority:
High
Assignee:
Leonid Usov
Category:
-
Target version:
Ceph - v20.0.0
% Done:

0%

Source:
Development
Tags:
backport_processed
Backport:
squid
Regression:
No
Severity:
3 - minor
Reviewed:
Affected Versions:
ceph-qa-suite:
Component(FS):
Labels (FS):
Pull request ID:
56542
Crash signature (v1):
Crash signature (v2):

Description

MDS daemons on linux machines take ~50% CPU, with the quiesce db mgr thread at the top.

Analysis of the issue showed that the time interval passed into the @condition_variable::wait_for()@ method can cause an overflow and result in a busy loop instead of sleeping most of the time.

Related issues 1 (1 open — 0 closed)

Copied to CephFS - Backport #65289: squid: MDS daemon is using 50% CPU when idleIn ProgressPatrick DonnellyActions
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 #1

Updated by Leonid Usov 28 days ago

  • Backport changed from reef to squid
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 #2

Updated by Patrick Donnelly 28 days ago

  • Status changed from New to Fix Under Review
  • Target version set to v20.0.0
  • Source set to Development
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 #3

Updated by Patrick Donnelly 28 days ago

  • Status changed from Fix Under Review to Pending Backport
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 #4

Updated by Backport Bot 28 days ago

  • Copied to Backport #65289: squid: MDS daemon is using 50% CPU when idle added
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 #5

Updated by Backport Bot 28 days ago

  • Tags set to backport_processed
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