[SERVER-15950] Reduce contention on groupCommitMutex in MMAP V1 - MongoDB Jira

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Details

Type: Bug
Status: Closed
Priority: Major - P3
Resolution: Done
Affects Version/s: 2.7.8
Fix Version/s: 2.8.0-rc0
Component/s: Concurrency
Labels:
- 28qa

Backwards Compatibility:
Fully Compatible
Operating System:
ALL
Steps To Reproduce:

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Description

On insert-only workload (e.g. sysbench first phase), groupCommitMutex shows up as the most congested lock. Attached the Vtune lock profiler output as an evidence

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vtune_profiler_groupcommit.png
432 kB
Nov 04 2014 06:14:11 PM UTC

Activity

People

Assignee:: Mathias Stearn

Reporter:: Davide Italiano

Participants:: Davide Italiano, Githook User, Kaloian Manassiev, Mathias Stearn, Tim Callaghan

Votes:: 0 Vote for this issue

Watchers:: 8 Start watching this issue

Dates

Created:: Nov 04 2014 06:14:11 PM UTC

Updated:: Nov 19 2014 04:26:40 PM UTC

Resolved:: Nov 06 2014 10:15:16 PM UTC