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2026-05-05 - 05:27
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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 10 highest latencies:
System rackeslot5.osadl.org (updated Tue May 05, 2026 00:44:21)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2689799320,21cyclictest0-21swapper/222:04:192
2689799300,29cyclictest20041-21cron00:40:012
2689799300,29cyclictest19360-21cron23:30:012
26900992927,1cyclictest30309-21idleruntime-cro21:35:013
2690099290,28cyclictest6904-21apt-get20:45:123
2690099290,1cyclictest621-21dbus-daemon00:35:023
2690099290,1cyclictest16500-21sh22:15:013
26897992928,1cyclictest19132-21apt-get22:20:122
26897992927,1cyclictest2546-21cron21:45:002
26897992927,1cyclictest22057-21latency_hist23:35:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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