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2026-08-18 - 10:13
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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 Tue Aug 18, 2026 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
288436221070,2sleep30-21swapper/300:00:203
27083462940,2sleep30-21swapper/322:05:083
28650112480,1sleep10-21swapper/123:50:121
26916882450,2sleep20-21swapper/221:52:292
2482326992822,2cyclictest2729976-21/usr/sbin/munin22:20:010
2482326992713,5cyclictest0-21swapper/022:50:020
2482326992619,2cyclictest2491982-21sh19:20:020
2482326992612,4cyclictest2656243-21cstates21:30:070
28730332250,2sleep20-21swapper/223:55:142
28730332250,2sleep20-21swapper/223:55:142
2482327992519,2cyclictest69250irq/121-eno123:05:161
2482326992314,5cyclictest759-1atopacctd00:19:530
2482328992219,1cyclictest0-21swapper/221:35:012
2482328992219,1cyclictest0-21swapper/219:20:012
248232899221,5cyclictest0-21swapper/222:20:012
2482327992219,2cyclictest759-1atopacctd21:15:011
2482327992219,2cyclictest664-21dbus-daemon21:10:021
2482327992219,2cyclictest2564661-21idleruntime-cro20:20:011
2482327992215,3cyclictest2888716-21kthreadcore00:05:161
2482326992215,6cyclictest0-21swapper/021:20:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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