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2025-07-16 - 00:42
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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 Tue Jul 15, 2025 12:43:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
9437321390,1sleep794372-21ntpq20:42:387
363726299400,38cyclictest4144731-21latency_hist19:37:127
3637261994038,2cyclictest3580020-21kworker/u16:1+flush-8:015:41:216
3637258993735,2cyclictest3580020-21kworker/u16:1+flush-8:015:39:495
363726299350,33cyclictest3877468-21latency_hist17:27:137
363726299340,33cyclictest27326-21gnome-software15:38:367
3637256993330,2cyclictest3847014-21kworker/u16:2+events_unbound17:32:154
3637258993230,2cyclictest3928630-21kworker/u16:2+flush-8:018:42:435
363726299310,25cyclictest3939220-21latency_hist17:57:127
3637258993129,2cyclictest4083167-21kworker/u16:4+events_unbound20:14:235
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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