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2024-11-22 - 10:09
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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 10 highest latencies:
System rack1slot3.osadl.org (updated Fri Nov 22, 2024 00:43:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
360505999179,7cyclictest0-21swapper/319:25:113
3605059991615,0cyclictest0-21swapper/322:34:543
3605059991413,0cyclictest0-21swapper/319:19:193
360505999140,12cyclictest0-21swapper/319:40:143
3605059991313,0cyclictest0-21swapper/323:55:483
3605059991313,0cyclictest0-21swapper/323:23:023
3605059991313,0cyclictest0-21swapper/323:18:573
3605059991313,0cyclictest0-21swapper/323:08:423
3605059991313,0cyclictest0-21swapper/320:12:353
3605059991313,0cyclictest0-21swapper/320:05:243
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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