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Type:
Bug
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Resolution: Duplicate
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Priority:
Major - P3
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None
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Affects Version/s: None
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Component/s: Admin, Diagnostics
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Labels:None
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ALL
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Query 2017-06-19
Based on this thread, v3.0 should include initial locking time in total operation latency: https://groups.google.com/forum/#!searchin/mongodb-dev/mark$20callaghan%7Csort:date/mongodb-dev/l2fR4Xr-Bxo/ibYPp7BB4-cJ
However, this is not true. As an example, here is a log line of an operation that claims latency of 2ms, but it waited 1.5sec for a lock:
query ... query: { .... } planSummary: IXSCAN { venueId: 1, timestamp: 1, activeCommand: 1 } ntoreturn:100 ntoskip:0 nscanned:31 nscannedObjects:31 keyUpdates:0 writeConflicts:0 numYields:1 nreturned:31 reslen:6475 locks:{ Global: { acquireCount: { r: 4 } }, Database: { acquireCount: { r: 2 }, acquireWaitCount: { r: 1 }, timeAcquiringMicros: { r: 1468984 } }, Collection: { acquireCount: { r: 2 } } } 2ms
- duplicates
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SERVER-29304 Exclude time spent blocking for awaitData from latency metrics
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- Closed
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- is duplicated by
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- Closed
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