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2026-08-10 - 15:09
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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 Aug 10, 2026 00:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1819038996443,19cyclictest3616534-1kworker/1:1H22:00:001
1819038996341,20cyclictest3616534-1kworker/1:1H20:36:311
181903899630,62cyclictest0-21swapper/122:23:391
1819038996232,29cyclictest2011476-21kworker/1:300:05:011
1819038996142,17cyclictest1881752-21kworker/1:121:40:001
181903899610,60cyclictest0-21swapper/120:47:101
1819056995947,10cyclictest3481646-1kworker/2:1H19:50:152
1819038995943,15cyclictest1990973-21kworker/1:323:50:001
1819038995943,15cyclictest1847373-21kworker/1:120:55:171
1819038995942,16cyclictest1881752-21kworker/1:121:45:151
1819038995941,17cyclictest1943762-21kworker/1:022:50:131
1819038995937,20cyclictest1986652-21kworker/1:123:32:371
1819056995838,8cyclictest3481646-1kworker/2:1H20:15:152
1819038995843,14cyclictest1954415-21kworker/1:123:04:111
1819038995843,14cyclictest1935705-21kworker/1:122:37:391
1819038995843,14cyclictest1847373-21kworker/1:120:50:131
1819038995843,14cyclictest1822381-21kworker/1:019:40:261
1819038995843,14cyclictest1822381-21kworker/1:019:40:261
1819038995842,15cyclictest3616534-1kworker/1:1H22:01:431
1819038995842,15cyclictest1872426-21kworker/1:021:30:181
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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