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2026-08-16 - 05:08
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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
Characteristics of the 20 highest latencies:
System rackeslot2.osadl.org (updated Sun Aug 16, 2026 00:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
328311621070,2sleep30-21swapper/323:05:183
30152302500,1sleep10-21swapper/119:50:191
33258792290,2sleep30-21swapper/323:34:203
2967779992417,5cyclictest3192906-21kworker/u16:0-rpciod22:40:021
2967778992416,4cyclictest0-21swapper/023:45:020
2967779992219,2cyclictest3422713-21dump-pmu-power00:40:011
2967779992219,2cyclictest3259635-21/usr/sbin/munin22:50:021
2967779992216,2cyclictest69250irq/121-eno123:00:171
2967779992215,3cyclictest3166594-21kthreadcore21:45:191
2967778992211,6cyclictest0-21swapper/021:10:100
2967780992118,1cyclictest0-21swapper/223:20:012
2967779992118,2cyclictest3068607-21gmain20:35:011
3240591200,5phc2sys0-21swapper/323:24:563
2967779992017,2cyclictest3333843-21systemd-run23:40:021
2967779992016,2cyclictest664-21dbus-daemon19:25:031
2967779992014,2cyclictest0-21swapper/122:45:021
2967779992011,4cyclictest3187058-21kthreadcore22:00:211
2967779992011,4cyclictest0-21swapper/120:40:011
296777899201,17cyclictest0-21swapper/021:45:010
2967778992011,5cyclictest759-1atopacctd22:55:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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