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2026-06-29 - 11:48
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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 Mon Jun 29, 2026 00:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
595728997243,28cyclictest761023-21kworker/1:123:40:151
595728997234,35cyclictest2591903-1kworker/1:1H20:20:001
595728997141,29cyclictest590461-21kworker/1:119:10:141
595728996562,2cyclictest0-21swapper/100:14:551
595728996461,1cyclictest656407-21fschecks_time21:35:141
595728996360,2cyclictest0-21swapper/122:52:331
595728996360,2cyclictest0-21swapper/120:25:491
595728996352,8cyclictest787198-21cron00:00:001
595728996259,2cyclictest0-21swapper/123:07:571
595728996241,20cyclictest631613-21kworker/1:021:10:131
595728996241,19cyclictest771369-21kworker/1:223:45:141
595728996227,33cyclictest2591903-1kworker/1:1H19:45:001
59572899620,3cyclictest954417-21systemd-journal21:27:531
595728996158,2cyclictest0-21swapper/119:57:361
595728996145,15cyclictest628508-21kworker/1:220:55:151
595728996144,15cyclictest2591903-1kworker/1:1H22:20:141
595728996143,17cyclictest713852-21kworker/1:122:40:161
595728996143,17cyclictest713852-21kworker/1:122:40:161
59572899613,56cyclictest0-21swapper/100:08:311
595728996132,28cyclictest670833-21kworker/1:021:55:141
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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