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2024-04-20 - 12:24
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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 rackdslot1.osadl.org (updated Sat Apr 20, 2024 00:46:27)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
342921740,8sleep22682899cyclictest21:45:232
1176911740,8ptp4l0-21swapper/119:07:531
1176911730,15ptp4l0-21swapper/219:06:002
1176911480,16ptp4l0-21swapper/319:05:593
1176911440,17ptp4l0-21swapper/019:07:050
1176911050,9ptp4l0-21swapper/019:10:020
1139721000,8sleep12682799cyclictest22:01:531
117691770,8ptp4l0-21swapper/221:40:132
25172720,2sleep00-21swapper/000:00:310
26827997158,8cyclictest25-21ksoftirqd/121:05:141
26827997057,8cyclictest25-21ksoftirqd/120:40:111
117691700,5ptp4l4045-21netstat22:55:230
312652680,4sleep0101ktimersoftd/020:25:350
26828996452,7cyclictest33-21ksoftirqd/223:05:102
26828996451,7cyclictest33-21ksoftirqd/223:55:102
26828996451,6cyclictest33-21ksoftirqd/220:50:102
117691640,4ptp4l1561-21grep22:50:200
272092630,2sleep30-21swapper/323:45:223
26828996352,6cyclictest33-21ksoftirqd/219:55:222
26828996350,6cyclictest33-21ksoftirqd/220:05:102
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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