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2026-07-15 - 12:08
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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 rackfslot7.osadl.org (updated Wed Jul 15, 2026 00:46:19)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1213408991360,135cyclictest0-21swapper/623:25:176
121340799846,39cyclictest1-21systemd23:05:015
1213405998263,19cyclictest0-21swapper/320:10:163
121340799780,59cyclictest1224240-21awk19:30:015
1213402997718,58cyclictest16-21ksoftirqd/023:25:170
1213409997437,19cyclictest871ktimers/721:05:167
1213407997315,39cyclictest1377282-21ntpq00:05:205
1213402996950,19cyclictest0-21swapper/023:55:150
1213407996628,19cyclictest0-21swapper/520:59:395
121340799658,38cyclictest0-21swapper/520:34:195
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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