InnoDB status may show negative values for spin rounds per wait
Bug #1527160 reported by
Laurynas Biveinis
This bug affects 1 person
| Affects | Status | Importance | Assigned to | Milestone | ||
|---|---|---|---|---|---|---|
| MySQL Server |
Unknown
|
Unknown
|
||||
| Percona Server moved to https://jira.percona.com/projects/PS | Status tracked in 5.7 | |||||
| 5.5 |
Invalid
|
Undecided
|
Laurynas Biveinis | |||
| 5.6 |
Fix Released
|
Medium
|
Laurynas Biveinis | |||
| 5.7 |
Fix Released
|
Medium
|
Laurynas Biveinis | |||
Bug Description
----------
SEMAPHORES
----------
OS WAIT ARRAY INFO: reservation count 19811539060
OS WAIT ARRAY INFO: signal count 8333711487
Mutex spin waits 192857078576, rounds 290389036704, OS waits 1568180069
RW-shared spins 19747848205, rounds 565755834160, OS waits 14799492482
RW-excl spins 7774140570, rounds 144578121130, OS waits 3188338144
Spin rounds per wait: -697.30 mutex, -327.60 RW-shared, -177.22 RW-excl
This appears to be caused by
(double) mutex_spin_
(mutex_
conditional operator converting its second arg to "int"
Revision history for this message
| Laurynas Biveinis (laurynas-biveinis) wrote | #1 |
| tags: | added: innodb upstream |
Revision history for this message
| Shahriyar Rzayev (rzayev-sehriyar) wrote | #2 |
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