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2023-09-22 - 00:46
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Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Characteristics of the 20 highest latencies:
System rackcslot6.osadl.org (updated Thu Sep 21, 2023 00:46:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
74551823800,4sleep763-21ksoftirqd/719:05:327
74430523760,7sleep228-21ksoftirqd/219:05:192
7458122127108,3sleep50-21swapper/519:07:085
7445932123106,8sleep40-21swapper/419:05:234
74580129356,11sleep30-21swapper/319:06:593
9143612890,0sleep010-21ksoftirqd/022:35:290
9410202860,0sleep60-21swapper/623:00:186
746227998615,39cyclictest0-21swapper/219:22:432
746227998517,36cyclictest0-21swapper/223:22:432
74583228459,19sleep60-21swapper/619:07:266
746227998314,40cyclictest0-21swapper/221:32:432
74588328056,12sleep00-21swapper/019:08:080
746250997911,35cyclictest0-21swapper/522:02:425
746264997817,35cyclictest0-21swapper/720:57:427
746264997816,34cyclictest0-21swapper/720:32:427
9351592770,2sleep228-21ksoftirqd/222:55:192
9351592770,2sleep228-21ksoftirqd/222:55:182
746264997623,37cyclictest0-21swapper/721:17:427
74574127660,11sleep10-21swapper/119:06:091
8558722720,0sleep40-21swapper/421:45:044
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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