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2025-12-24 - 02:59
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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 rack0slot2.osadl.org (updated Wed Dec 24, 2025 00:43:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
40412092710,1sleep74041210-21sh19:24:147
400818125847,8sleep50-21swapper/519:08:585
3400222550,0sleep7340023-21tr23:34:377
400796425319,30sleep70-21swapper/719:05:567
400812224616,8sleep40-21swapper/419:08:094
4008500994438,5cyclictest4167051-21latency_hist20:29:137
400811524218,7sleep60-21swapper/619:08:036
4008490993735,2cyclictest4138056-21kworker/u16:0+flush-8:020:19:325
41418272360,1sleep50-21swapper/520:14:365
400850099350,34cyclictest4019508-21grep19:14:177
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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