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2026-06-06 - 09:27
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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 20 highest latencies:
System rackfslot7.osadl.org (updated Sat Jun 06, 2026 00:46:13)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
357410997960,19cyclictest424811-21ld21:10:184
357410997234,38cyclictest378796-21cat19:45:234
357410997234,38cyclictest378796-21cat19:45:224
357410997232,19cyclictest0-21swapper/422:49:294
357410997213,59cyclictest394775-21ld20:15:184
357410997211,58cyclictest437459-21kworker/u32:5+events_unbound23:03:464
357410997033,18cyclictest419396-21uname21:00:184
357410997030,39cyclictest515361-21ld23:55:184
357410997030,39cyclictest0-21swapper/420:11:114
357410996930,39cyclictest0-21swapper/423:41:554
357410996930,39cyclictest0-21swapper/422:40:104
357410996930,39cyclictest0-21swapper/421:56:024
357410996929,39cyclictest0-21swapper/421:23:584
357410996911,39cyclictest360725-21kworker/u32:5+events_unbound19:58:584
357410996830,19cyclictest441497-21ntpq21:40:194
357410996729,38cyclictest0-21swapper/422:02:594
357410996728,39cyclictest0-21swapper/421:51:394
357410996728,38cyclictest1086-21runrttasks21:45:144
357410996728,19cyclictest0-21swapper/400:24:274
357410996710,38cyclictest0-21swapper/421:27:514
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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