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2026-06-27 - 05:18
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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 Sat Jun 27, 2026 00:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3796958996744,22cyclictest3995750-21kworker/1:200:14:271
379695899660,64cyclictest3819409-21kworker/1:120:29:271
379695899650,64cyclictest0-21swapper/120:01:531
379695899630,62cyclictest0-21swapper/121:26:261
379695899630,1cyclictest0-21swapper/121:04:581
3796958996259,2cyclictest0-21swapper/121:16:381
3796958996244,17cyclictest4018946-21kworker/1:100:35:151
379695899610,60cyclictest0-21swapper/119:45:181
3796958996045,14cyclictest3831751-21kworker/1:221:10:131
3796958996044,15cyclictest3854704-21kworker/1:221:35:141
3796958995955,2cyclictest0-21swapper/122:05:211
3796958995943,14cyclictest3803474-21kworker/1:119:30:001
3796958995943,14cyclictest1608595-1kworker/1:2H22:00:131
3796958995942,16cyclictest3972405-21kworker/1:123:45:121
3796958995939,18cyclictest3940843-21kworker/1:223:10:141
3796958995855,2cyclictest0-21swapper/122:19:311
3796958995843,14cyclictest4002931-21kworker/1:300:15:141
3796958995843,14cyclictest3965096-21kworker/1:023:35:011
3796958995843,14cyclictest3940843-21kworker/1:223:16:301
3796958995843,14cyclictest3901006-21kworker/1:222:30:161
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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