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2025-04-02 - 04:10
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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 rackcslot2.osadl.org (updated Wed Apr 02, 2025 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1678826856,8sleep00-21swapper/019:06:430
1666826855,9sleep10-21swapper/119:05:271
201312630,0sleep00-21swapper/023:00:060
17144993434,0cyclictest7-21ksoftirqd/022:18:320
17144993410,0cyclictest0-21swapper/022:03:000
17144993210,2cyclictest0-21swapper/023:31:390
17144993210,2cyclictest0-21swapper/022:47:430
1714599310,30cyclictest11815-21kworker/u4:123:44:261
17145993030,0cyclictest0-21swapper/121:11:171
1714599300,28cyclictest0-21swapper/122:25:451
17144992928,0cyclictest0-21swapper/022:23:060
1714499287,20cyclictest0-21swapper/022:35:250
17145992610,2cyclictest0-21swapper/121:34:121
17144992610,0cyclictest0-21swapper/019:17:030
17145992524,1cyclictest0-21swapper/122:38:491
1714599252,22cyclictest27111-21ssh23:10:301
17145992520,2cyclictest26856-21apache221:08:131
1714599251,22cyclictest8619-21ssh22:04:511
17145992511,1cyclictest13198-21grep21:28:531
17145992511,1cyclictest13198-21grep21:28:531
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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