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2026-08-14 - 20:18
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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 Fri Aug 14, 2026 12:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2090013996561,2cyclictest0-21swapper/112:22:401
2090013996544,19cyclictest2258675-21kworker/1:311:45:141
2090013996241,20cyclictest2265030-21kworker/1:011:40:011
2090013996241,19cyclictest2115635-21kworker/1:008:40:171
2090013996238,22cyclictest2115635-21kworker/1:008:40:001
2090013996236,25cyclictest2107914-21kworker/1:308:17:091
2090013996144,16cyclictest2107914-21kworker/1:308:04:551
2090013996140,19cyclictest1927077-1kworker/1:0H09:44:331
2090013996041,18cyclictest2124895-21kworker/1:109:00:141
2090013996039,19cyclictest2252778-21kworker/1:111:30:131
209001399602,56cyclictest0-21swapper/112:10:201
2090013995955,2cyclictest2238260-21fschecks_time11:10:131
2090013995942,16cyclictest2187173-21kworker/1:310:25:131
2090013995941,17cyclictest2232519-21kworker/1:311:10:001
2090013995941,17cyclictest2187173-21kworker/1:310:15:141
2090013995941,17cyclictest2115635-21kworker/1:008:30:021
2090013995941,17cyclictest2087061-21kworker/1:107:25:201
2090013995940,17cyclictest2216534-21kworker/1:211:20:391
2090013995940,17cyclictest1927077-1kworker/1:0H09:05:131
2090013995939,18cyclictest2164587-21kworker/1:209:55:151
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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