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2026-07-02 - 05:23
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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 Thu Jul 02, 2026 00:43:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2220927997038,30cyclictest2243590-21kworker/1:020:40:011
2220927996663,2cyclictest0-21swapper/120:44:141
2220927996644,21cyclictest2387475-21kworker/1:123:35:141
2220927996639,26cyclictest2251584-21kworker/1:121:10:131
2220927996634,31cyclictest2398148-21kworker/1:223:45:131
2220927996432,31cyclictest2251584-21kworker/1:121:05:121
2220927996360,1cyclictest0-21swapper/121:40:431
2220927996358,3cyclictest2238058-21fschecks_count20:00:141
222092799631,60cyclictest0-21swapper/122:59:161
2220927996260,1cyclictest0-21swapper/121:36:091
2220927996242,19cyclictest2218523-21kworker/1:119:25:141
2220927996235,26cyclictest2218523-21kworker/1:119:15:151
2220927996230,31cyclictest2325248-21kworker/1:122:35:131
2220927996142,18cyclictest2339745-21kworker/1:222:40:171
2220927996142,17cyclictest2218523-21kworker/1:119:20:191
2220927996133,26cyclictest2411319-21kworker/1:100:05:191
222092799610,59cyclictest0-21swapper/120:55:141
2220927996044,15cyclictest2243590-21kworker/1:020:26:151
2220927996042,17cyclictest2251584-21kworker/1:121:20:111
2220927996042,17cyclictest2243590-21kworker/1:020:20:131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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