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2026-05-10 - 04:42
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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 rackeslot5.osadl.org (updated Sun May 10, 2026 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3333993028,1cyclictest307-21systemd-journal22:50:013
332799300,29cyclictest9302-21cron21:40:001
332699300,29cyclictest28962-21dump-pmu-power20:05:010
3333992927,1cyclictest10803-21apt-get22:50:103
333399290,28cyclictest0-21swapper/321:45:013
332799290,28cyclictest9624-21apt-get21:40:141
332799290,28cyclictest18735-21apt-get20:50:111
332799290,28cyclictest0-21swapper/122:25:001
332799290,28cyclictest0-21swapper/121:05:121
332799290,1cyclictest24868-21apt-get00:30:021
3326992926,2cyclictest15818-21cron20:45:010
332699290,28cyclictest0-21swapper/022:35:110
332699290,28cyclictest0-21swapper/022:15:120
332699290,28cyclictest0-21swapper/021:50:100
332699290,28cyclictest0-21swapper/021:05:120
3333992828,0cyclictest13131-21apt-get22:55:133
3333992828,0cyclictest0-21swapper/319:20:123
333399280,0cyclictest18735-21apt-get20:50:113
333399280,0cyclictest0-21swapper/300:15:123
3329992827,1cyclictest27514-21perf00:35:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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