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2026-07-01 - 04:34
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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 Jul 01, 2026 00:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1679850996243,18cyclictest1826103-21kworker/1:123:10:011
1679850996240,19cyclictest3517983-1kworker/1:0H20:45:001
1679850996235,26cyclictest1725499-21kworker/1:021:20:141
1679850996146,14cyclictest1833498-21kworker/1:023:20:141
1679850996145,15cyclictest1710337-21kworker/1:220:50:411
1679850996136,24cyclictest1806734-21kworker/1:323:25:001
1679850996045,14cyclictest1692594-21kworker/1:119:55:171
1679850996044,15cyclictest3517983-1kworker/1:0H22:15:121
1679850996044,15cyclictest3517983-1kworker/1:0H22:15:111
1679850996044,15cyclictest1696589-21kworker/1:220:08:471
1679850995956,2cyclictest0-21swapper/123:51:161
1679850995944,14cyclictest1885157-21kworker/1:000:16:401
1679850995943,15cyclictest1856610-21kworker/1:300:11:381
1679850995943,15cyclictest1780377-21kworker/1:122:20:151
1679850995943,15cyclictest1698762-21kworker/1:020:16:271
1679850995943,15cyclictest1678076-21kworker/1:019:15:021
1679850995942,16cyclictest1885157-21kworker/1:000:25:141
1679850995941,17cyclictest1833498-21kworker/1:023:15:151
1679850995941,17cyclictest1720651-21kworker/1:221:45:161
1679850995941,17cyclictest1720651-21kworker/1:221:40:151
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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