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2026-09-06 - 17:04
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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 rackeslot3.osadl.org (updated Sun Sep 06, 2026 12:43:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1841094997237,33cyclictest1846314-21kworker/1:307:35:151
1841094996739,27cyclictest1869491-21kworker/1:208:55:201
1841094996635,30cyclictest1912484-21kworker/1:109:50:141
184109499650,64cyclictest0-21swapper/107:45:191
184109499650,63cyclictest0-21swapper/112:05:061
1841094996441,21cyclictest3479469-1kworker/1:1H08:15:001
184109499630,62cyclictest0-21swapper/109:10:161
184109499630,2cyclictest1-21systemd09:04:591
1841094996234,27cyclictest1855847-21kworker/1:007:55:141
1841094996234,26cyclictest1992939-21kworker/1:311:25:131
1841094996215,45cyclictest1973463-21kworker/1:311:00:181
1841094996145,15cyclictest1844498-21kworker/1:207:20:101
1841094996139,21cyclictest1980319-21kworker/1:011:15:141
1841094996138,22cyclictest1969568-21kworker/1:110:55:131
1841094996133,27cyclictest1877208-21kworker/1:109:10:011
1841094996132,28cyclictest1869491-21kworker/1:208:50:191
1841094996131,29cyclictest1901232-21kworker/1:009:35:131
184109499590,57cyclictest1950263-21cron10:30:011
1841094995856,1cyclictest0-21swapper/112:03:471
1841094995855,2cyclictest0-21swapper/111:10:051
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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