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2026-05-20 - 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 rackdslot0.osadl.org (updated Wed May 20, 2026 00:46:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
704992825,2cyclictest21-21ksoftirqd/123:55:131
70899250,24cyclictest0-21swapper/223:55:132
69999220,4cyclictest0-21swapper/019:53:180
70899210,3cyclictest0-21swapper/200:35:002
708992017,2cyclictest26071-21processes23:40:182
70899200,19cyclictest843-21systemd-network20:35:392
704992016,3cyclictest16324-21fgrep00:20:221
699992017,2cyclictest7695-21nvmesmart_nvme000:05:240
70899192,16cyclictest2069-21systemd-udevd00:28:512
708991919,0cyclictest0-21swapper/220:12:592
708991917,1cyclictest0-21swapper/223:36:572
708991917,1cyclictest0-21swapper/223:36:572
708991917,1cyclictest0-21swapper/222:40:182
70899190,4cyclictest399-20systemd-journal20:04:552
70899190,18cyclictest22693-21grep20:45:022
70499192,16cyclictest12071-21grep23:15:191
704991917,1cyclictest0-21swapper/120:59:261
704991916,2cyclictest0-21swapper/100:10:391
70499190,4cyclictest30180-21nfsd422:50:191
70499190,3cyclictest0-21swapper/121:40:181
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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