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2026-04-26 - 10:47
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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 Sun Apr 26, 2026 00:44:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
881991303,110cyclictest16562-21apt-get23:02:431
8769912258,57cyclictest863-21cyclictest22:51:300
8769911660,47cyclictest31271-21ssh23:27:280
876991163,46cyclictest875-21sort19:02:300
8769911357,51cyclictest0-21swapper/021:17:290
8769911357,51cyclictest0-21swapper/021:17:290
8769911157,47cyclictest0-21swapper/022:38:020
8769911156,48cyclictest0-21swapper/000:12:500
876991094,10cyclictest19537-21apt-get23:07:380
876991094,10cyclictest19537-21apt-get23:07:380
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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