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2025-11-26 - 08:25
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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 Nov 26, 2025 00:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3013090996734,31cyclictest3100633-21kworker/1:123:45:161
3013090996636,28cyclictest3384951-1kworker/1:2H21:35:001
3013090996545,19cyclictest3051953-21kworker/1:121:10:161
301309099650,62cyclictest0-21swapper/119:45:431
3013090996441,21cyclictest3384951-1kworker/1:2H20:54:591
301309099640,63cyclictest0-21swapper/119:43:081
301309099640,63cyclictest0-21swapper/119:27:361
3013090996359,2cyclictest0-21swapper/119:10:321
301309099630,62cyclictest0-21swapper/100:01:011
3013090996260,1cyclictest0-21swapper/123:31:091
3013090996239,22cyclictest3384951-1kworker/1:2H21:45:001
3013090996158,2cyclictest0-21swapper/119:52:371
3013090996139,20cyclictest3384951-1kworker/1:2H20:59:591
301309099610,60cyclictest0-21swapper/122:24:051
301309099610,60cyclictest0-21swapper/122:24:041
301309099610,60cyclictest0-21swapper/120:00:471
301309099610,60cyclictest0-21swapper/100:27:081
3013090996058,1cyclictest0-21swapper/122:25:331
3013090996043,14cyclictest3034843-21kworker/1:020:32:441
3013090996038,20cyclictest3384951-1kworker/1:2H21:30:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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