Description
Implement locking statistics and update documentation. Here is a proposed view of what the stats would look like:
{
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"Global" : {
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"acquireCount" : {
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"r" : NumberLong(199087),
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"w" : NumberLong(67041),
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"R" : NumberLong(0),
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"W" : NumberLong(6)
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},
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"acquireWaitCount" : {
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"r" : NumberLong(6251),
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"w" : NumberLong(737),
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"R" : NumberLong(0),
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"W" : NumberLong(1)
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},
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"timeAcquiringMicros" : {
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"r" : NumberLong(0),
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"w" : NumberLong("40050855895"),
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"R" : NumberLong(0),
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"W" : NumberLong(14087631)
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}
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},
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"MMAPV1Flush" : {
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"acquireCount" : {
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"r" : NumberLong(397136),
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"w" : NumberLong(179501),
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"R" : NumberLong(2483),
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"W" : NumberLong(0)
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},
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"acquireWaitCount" : {
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"r" : NumberLong(414),
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"w" : NumberLong(1969),
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"R" : NumberLong(1403),
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"W" : NumberLong(47)
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},
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"timeAcquiringMicros" : {
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"r" : NumberLong(0),
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"w" : NumberLong(0),
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"R" : NumberLong(0),
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"W" : NumberLong(0)
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}
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},
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"Database" : {
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"acquireCount" : {
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"r" : NumberLong(199085),
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"w" : NumberLong(66982),
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"R" : NumberLong(4),
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"W" : NumberLong(11)
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},
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"acquireWaitCount" : {
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"r" : NumberLong(0),
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"w" : NumberLong(0),
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"R" : NumberLong(0),
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"W" : NumberLong(0)
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},
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"timeAcquiringMicros" : {
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"r" : NumberLong(0),
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"w" : NumberLong(0),
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"R" : NumberLong(0),
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"W" : NumberLong(0)
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}
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},
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"Collection" : {
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"acquireCount" : {
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"r" : NumberLong(0),
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"w" : NumberLong(0),
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"R" : NumberLong(199101),
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"W" : NumberLong(66984)
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},
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"acquireWaitCount" : {
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"r" : NumberLong(0),
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"w" : NumberLong(0),
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"R" : NumberLong(198049),
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"W" : NumberLong(66980)
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},
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"timeAcquiringMicros" : {
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"r" : NumberLong(0),
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"w" : NumberLong(0),
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"R" : NumberLong(592931099),
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"W" : NumberLong(153978610)
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}
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},
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"Metadata" : {
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"acquireCount" : {
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"r" : NumberLong(0),
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"w" : NumberLong(0),
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"R" : NumberLong(0),
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"W" : NumberLong(21)
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},
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"acquireWaitCount" : {
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"r" : NumberLong(0),
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"w" : NumberLong(0),
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"R" : NumberLong(0),
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"W" : NumberLong(0)
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},
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"timeAcquiringMicros" : {
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"r" : NumberLong(0),
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"w" : NumberLong(0),
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"R" : NumberLong(0),
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"W" : NumberLong(0)
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}
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},
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"local" : {
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"acquireCount" : {
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"r" : NumberLong(0),
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"w" : NumberLong(0),
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"R" : NumberLong(0),
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"W" : NumberLong(0)
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},
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"acquireWaitCount" : {
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"r" : NumberLong(0),
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"w" : NumberLong(0),
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"R" : NumberLong(0),
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"W" : NumberLong(0)
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},
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"timeAcquiringMicros" : {
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"r" : NumberLong(0),
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"w" : NumberLong(0),
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"R" : NumberLong(0),
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"W" : NumberLong(0)
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}
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}
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}
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After refactoring stats collection logic in storage, reenable profile4.js, which was disabled temporarily to make progress on using the lock manager in unit tests.
Attachments
Issue Links
- is documented by
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DOCS-4666 rc6 - currentOp
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- Closed
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- is duplicated by
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SERVER-14462 db.currentOp doesn't report locking statistics
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- Closed
-