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2025-08-21 - 22:10
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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 Aug 21, 2025 12:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
17467993028,1cyclictest626-21gdbus07:15:000
1747099290,28cyclictest24411-21munin-run07:25:013
17469992928,1cyclictest32068-21apt-get07:40:142
1746999290,28cyclictest0-21swapper/212:20:152
1746999290,28cyclictest0-21swapper/210:45:122
1746999290,1cyclictest609-21dbus-daemon12:30:012
17468992927,1cyclictest24967-21cron12:00:011
17467992927,1cyclictest609-21dbus-daemon10:45:010
1747099280,28cyclictest0-21swapper/308:00:153
1747099280,28cyclictest0-21swapper/307:55:133
17469992828,0cyclictest0-21swapper/211:00:132
17469992828,0cyclictest0-21swapper/210:55:132
17469992826,1cyclictest6379-21cron07:55:002
1746999280,28cyclictest0-21swapper/211:45:122
1746999280,27cyclictest0-21swapper/208:50:002
17468992828,0cyclictest10743-21apt-get10:20:121
17468992827,1cyclictest29672-21apt-get11:00:131
1746899280,0cyclictest17679-21apt-get07:10:131
17467992828,0cyclictest0-21swapper/012:35:140
17467992826,2cyclictest27321-21cron12:05:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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