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2026-05-11 - 04:03
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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 Mon May 11, 2026 00:43:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
344265399651,63cyclictest0-21swapper/119:31:371
3442653996439,24cyclictest3408703-1kworker/1:1H00:20:151
344265399643,1cyclictest0-21swapper/120:10:281
344265399642,60cyclictest3466607-21kworker/1:020:30:581
344265399640,62cyclictest0-21swapper/120:16:431
3442653996335,27cyclictest3479454-21kworker/1:021:05:151
3442653996243,18cyclictest3604314-21kworker/1:323:30:141
3442653996159,1cyclictest0-21swapper/121:34:311
3442653996047,12cyclictest26350irq/16-i801_smb21:27:571
3442653996045,14cyclictest3651201-21kworker/1:100:19:571
3442653996044,15cyclictest3444222-21kworker/1:119:15:141
3442653996037,22cyclictest3628924-21kworker/1:223:55:141
3442653995842,15cyclictest3466607-21kworker/1:020:45:141
3442653995840,17cyclictest3651201-21kworker/1:100:30:141
3442653995835,22cyclictest3624121-21kworker/1:023:49:571
3442653995742,14cyclictest3665382-21kworker/1:000:35:011
3442653995741,15cyclictest3571844-21kworker/1:222:55:151
3442653995741,15cyclictest3528291-21kworker/1:222:10:141
3442653995741,15cyclictest3477646-21kworker/1:120:56:431
3442653995741,15cyclictest3477646-21kworker/1:120:56:431
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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