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2026-04-12 - 09:28
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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 Sun Apr 12, 2026 00:44:21)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1032399460,45cyclictest0-21swapper/322:00:113
10316993535,0cyclictest26510-21apt-get22:00:101
10313993427,1cyclictest25665-21sh20:49:590
1031399330,28cyclictest15221-21apt-get19:20:100
1031399312,1cyclictest21896-21cron19:35:010
1032399300,29cyclictest29517-21munin-run19:50:013
1032399300,29cyclictest19521-21apt-get21:45:133
1031399300,29cyclictest26876-21cron19:45:010
1032399290,28cyclictest0-21swapper/322:35:133
10321992927,1cyclictest7806-21cron22:30:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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