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2025-12-14 - 04:41
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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
Characteristics of the 10 highest latencies:
System rackdslot0.osadl.org (updated Sun Dec 14, 2025 00:45:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
10456992219,2cyclictest15539-21php7.023:09:002
1045599220,4cyclictest0-21swapper/120:52:161
10456992017,2cyclictest0-21swapper/220:59:142
1045699200,16cyclictest0-21swapper/200:33:372
10455992017,2cyclictest19095-21grep22:17:131
10454992017,2cyclictest32278-21cron21:45:010
1045699192,15cyclictest0-21swapper/223:59:022
10456991917,1cyclictest0-21swapper/222:57:162
10456991916,2cyclictest23213-21processes21:27:142
1045699190,1cyclictest0-21swapper/223:42:082
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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