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2026-07-03 - 06:16
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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 03, 2026 00:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2718435996361,1cyclictest2752985-21kworker/1:121:05:121
2718435996360,2cyclictest0-21swapper/120:44:471
271843599630,62cyclictest0-21swapper/119:50:381
271843599630,2cyclictest0-21swapper/122:57:561
2718435996260,1cyclictest0-21swapper/123:56:181
2718435996260,1cyclictest0-21swapper/100:29:461
2718435996238,14cyclictest2822706-21kworker/1:222:31:171
2718435996143,17cyclictest2786523-21kworker/1:121:50:161
2718435996142,17cyclictest2740620-21kworker/1:220:25:121
2718435996057,2cyclictest0-21swapper/120:38:051
2718435996031,27cyclictest2730515-21kworker/1:320:00:141
2718435995943,15cyclictest2853292-21kworker/1:023:19:481
2718435995942,16cyclictest2728277-21kworker/1:119:40:141
2718435995941,17cyclictest2749905-21kworker/1:220:55:141
2718435995937,20cyclictest405930-1kworker/1:1H19:15:001
271843599590,3cyclictest0-21swapper/123:27:561
2718435995843,14cyclictest405930-1kworker/1:1H23:38:161
2718435995843,14cyclictest2904921-21kworker/1:100:05:151
2718435995843,14cyclictest2837278-21kworker/1:122:46:471
2718435995843,14cyclictest2798389-21kworker/1:022:25:141
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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