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Type: Improvement
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Resolution: Done
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Priority: Major - P3
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Affects Version/s: 2.8.0-rc3
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Component/s: Admin, Performance
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None
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Fully Compatible
We currently check certain system parameters at start-up including high read-ahead and transparent huge pages.
It turns out even if THP are disabled (enabled set to [never]) if defrag is "always" then it impacts mongod when Linux defrags the pages. We should extend the check and the warning to /sys/kernel/mm/transparent_hugepage/defrag
- depends on
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SERVER-13482 mongod could warn user if OS transparent huge pages feature is on
- Closed
- is related to
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SERVER-16269 WiredTiger blocks queries and updates for many seconds.
- Closed
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SERVER-17522 THP startup warnings can become stale
- Closed
- related to
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SERVER-17036 db.runCommand({startupWarnings:1}) includes spurious line
- Closed
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SERVER-27588 Warning to disable defrag of transparent_hugepages when thp is disabled
- Closed
- links to