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2026-01-10 - 07:52
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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 rack3slot6.osadl.org (updated Sat Jan 10, 2026 00:44:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3108329332,48sleep10-21swapper/119:05:271
3183899798,21cyclictest32275-21runrttasks22:10:101
3183399782,16cyclictest8970-21sort19:35:010
130392760,6sleep113042-21grep22:45:351
3183399753,44cyclictest31226-21ntp_states22:05:390
3183899746,17cyclictest8572-21apt-get22:35:151
3183399745,24cyclictest32272-21apt-get22:10:110
31833997437,31cyclictest14-21ksoftirqd/022:40:340
3151327317,47sleep00-21swapper/019:08:360
31833996632,28cyclictest14-21ksoftirqd/021:35:330
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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