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2026-04-30 - 00:29
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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 Wed Apr 29, 2026 12:43:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3414811996450,12cyclictest3451066-21kworker/3:209:39:553
3414808996462,1cyclictest0-21swapper/111:28:111
3414808996461,2cyclictest0-21swapper/111:17:371
3414808996461,2cyclictest0-21swapper/111:17:371
3414808996461,2cyclictest0-21swapper/110:35:381
3414808996461,2cyclictest0-21swapper/108:17:471
341480899640,63cyclictest0-21swapper/108:55:491
341480899640,63cyclictest0-21swapper/108:54:361
3414808996361,1cyclictest0-21swapper/109:21:121
3414808996361,1cyclictest0-21swapper/109:21:111
3414808996358,2cyclictest3451685-21fschecks_time09:05:131
341480899630,62cyclictest0-21swapper/112:30:441
3414808996260,1cyclictest0-21swapper/107:38:171
3414808996259,2cyclictest0-21swapper/108:44:351
341480899620,61cyclictest0-21swapper/108:23:201
3414808996159,1cyclictest0-21swapper/111:30:401
3414808996144,15cyclictest1261546-1kworker/1:1H11:38:251
3414808996144,15cyclictest1261546-1kworker/1:1H09:00:131
3414808996142,18cyclictest3554194-21kworker/1:211:13:421
3414808996142,18cyclictest3554194-21kworker/1:211:13:411
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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