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2026-07-17 - 16:15
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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 Fri Jul 17, 2026 12:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4145203996459,3cyclictest4183877-21fschecks_count09:10:131
4145203996446,17cyclictest171980-21kworker/1:212:30:121
414520399630,61cyclictest0-21swapper/107:20:111
4145203996143,17cyclictest121334-21kworker/1:111:40:151
4145203996139,21cyclictest4181331-21kworker/1:009:05:401
4145203996044,15cyclictest14445-21kworker/1:209:40:021
4145203996043,16cyclictest104957-21kworker/1:111:17:051
4145203995943,15cyclictest4147757-21kworker/1:307:35:141
4145203995943,15cyclictest2886692-1kworker/1:2H09:00:071
4145203995943,15cyclictest171980-21kworker/1:212:35:141
4145203995943,15cyclictest171980-21kworker/1:212:35:141
4145203995943,15cyclictest137168-21kworker/1:211:55:141
4145203995856,1cyclictest0-21swapper/108:00:231
4145203995843,14cyclictest69305-21kworker/1:210:40:021
4145203995843,14cyclictest4143214-21kworker/1:207:10:141
4145203995843,14cyclictest2886692-1kworker/1:2H09:25:121
4145203995843,14cyclictest2886692-1kworker/1:2H07:55:061
4145203995843,14cyclictest116715-21kworker/1:311:30:011
4145203995842,15cyclictest4182873-21kworker/1:109:30:141
4145203995842,15cyclictest4175154-21kworker/1:108:50:221
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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