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2026-07-02 - 22:34
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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 Thu Jul 02, 2026 12:44:20)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3085599330,32cyclictest0-21swapper/107:45:121
30861993129,1cyclictest27345-21sendmail-msp09:19:593
30850993027,2cyclictest9637-21sh12:10:000
3085099300,29cyclictest27281-21cron09:20:000
3086199290,28cyclictest30150-21apt-get10:35:133
3086199290,28cyclictest20833-21apt-get10:15:113
3086099290,28cyclictest4508-21apt-get09:40:132
30855992928,1cyclictest208362chrt10:15:101
3085599290,28cyclictest13868-21apt-get10:00:101
3085599290,1cyclictest8622-21apt-get08:40:121
3085099290,28cyclictest0-21swapper/007:40:130
30861992828,0cyclictest0-21swapper/312:05:123
30861992827,1cyclictest16961-21apt-get12:25:113
30861992826,1cyclictest6796-21perf10:55:003
30861992826,1cyclictest0-21swapper/309:30:113
30861992825,2cyclictest17146-21cron07:50:003
3086199280,27cyclictest27824-21apt-get10:30:103
3086099280,28cyclictest0-21swapper/212:20:112
30855992828,0cyclictest0-21swapper/110:05:121
30855992828,0cyclictest0-21swapper/107:55:121
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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