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2024-11-12 - 07:13
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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
Compare latency of primary with shadow system
Characteristics of the 20 highest latencies:
System rack1slot8.osadl.org (updated Tue Nov 12, 2024 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
659199896801,89cyclictest0-21swapper/020:05:260
659299809731,38cyclictest27642-21unixbench_multi20:05:261
64652756736,14sleep10-21swapper/119:09:081
659199477424,46cyclictest6947-21cpuspeed19:10:150
659299422365,27cyclictest0-21swapper/119:10:151
375121600,11sleep1659299cyclictest22:35:431
6591999070,15cyclictest0-21swapper/023:21:580
6591998711,71cyclictest0-21swapper/000:08:580
216899860,4rtkit-daemon2167-21rtkit-daemon22:43:221
6591998464,15cyclictest0-21swapper/023:59:580
659199828,68cyclictest0-21swapper/023:51:580
6592998117,45cyclictest0-21swapper/123:32:591
216899810,5rtkit-daemon2167-21rtkit-daemon23:09:471
6592998013,51cyclictest0-21swapper/100:26:591
6591998034,39cyclictest17595-21diskmemload23:39:230
216899790,5rtkit-daemon2167-21rtkit-daemon23:25:221
216899760,4rtkit-daemon2167-21rtkit-daemon19:16:131
216899750,4rtkit-daemon2167-21rtkit-daemon21:51:401
6592997411,50cyclictest0-21swapper/122:26:591
6591997335,31cyclictest11985-21sh23:47:060
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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