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2024-11-22 - 16:41
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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 rack0slot8.osadl.org (updated Fri Nov 22, 2024 12:46:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
36072309945821,30cyclictest0-21swapper/308:31:489
3607227994418,2cyclictest54974-21Isolated21:43:200
36072419944044,395cyclictest702747-21Isolated21:43:205
3607227994320,428cyclictest0-21swapper/011:22:280
360724299430429,0cyclictest0-21swapper/1408:56:546
3607240994282,29cyclictest0-21swapper/1208:45:414
3607242994279,30cyclictest0-21swapper/1407:56:426
360724299426425,0cyclictest0-21swapper/1412:06:136
360724299425424,0cyclictest0-21swapper/1412:20:276
360724299425424,0cyclictest0-21swapper/1412:20:276
360724299424423,0cyclictest0-21swapper/1411:22:286
360722899424422,1cyclictest3859221-21kworker/u64:0+events_unbound12:06:121
36072409942322,400cyclictest0-21swapper/1210:53:374
360723199423421,1cyclictest12747-21thunderbird11:25:5510
3607237994220,29cyclictest0-21swapper/907:41:1615
3607242994210,420cyclictest0-21swapper/1409:03:256
360722899421419,1cyclictest3810443-21kworker/u64:1+events_unbound11:49:471
3607244994190,30cyclictest0-21swapper/1507:59:467
360724299419418,0cyclictest0-21swapper/1412:30:446
360724299419418,0cyclictest0-21swapper/1412:26:026
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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