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2026-07-20 - 17:34
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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 rackcslot4.osadl.org (updated Mon Jul 20, 2026 12:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
30616262264188,60sleep00-21swapper/007:07:380
30614622261191,54sleep10-21swapper/107:05:521
3061983998577,6cyclictest3260611-21fwupd12:19:560
3061991998175,4cyclictest3239314-21kworker/u8:012:19:571
106799770,3rtkit-daemon1066-21rtkit-daemon11:39:050
306198399610,4cyclictest3253187-21apt-get12:10:130
306198399583,34cyclictest3201883-21apt-get11:05:140
306198399540,9cyclictest3233928-21diskstats11:45:170
106799540,4rtkit-daemon1066-21rtkit-daemon07:23:590
306198399522,5cyclictest3130988-21apt-get09:35:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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