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2026-04-11 - 20:27
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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 rackbslot7.osadl.org (updated Sat Apr 11, 2026 12:44:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
272409911793,16cyclictest0-21swapper/007:33:280
27240991124,41cyclictest352-21runrttasks09:43:370
272409910937,64cyclictest0-21swapper/009:09:010
27240991082,34cyclictest7564-21grep07:38:570
272409910741,58cyclictest0-21swapper/009:58:250
27240991073,48cyclictest17737-21cat10:23:260
272409910622,8cyclictest0-21swapper/009:58:400
27240991053,26cyclictest24745-21/usr/sbin/munin10:33:550
27256991045,27cyclictest32708-21seq08:58:042
272409910437,60cyclictest27325-21/usr/sbin/munin10:39:290
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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