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2026-05-16 - 05:16
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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
Characteristics of the 20 highest latencies:
System rackcslot6.osadl.org (updated Sat May 16, 2026 00:46:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
300802399380379,1cyclictest97550irq/166-enp0s3121:59:026
300802399380378,1cyclictest97550irq/166-enp0s3100:11:026
300802399379378,1cyclictest97550irq/166-enp0s3121:49:026
300802399379378,1cyclictest3235585-21kworker/6:019:25:036
300802399379377,1cyclictest97550irq/166-enp0s3121:01:026
300802399379377,1cyclictest97550irq/166-enp0s3100:21:026
300802399379377,1cyclictest97550irq/166-enp0s3100:07:036
300802399379377,1cyclictest97550irq/166-enp0s3100:07:026
300802399378376,1cyclictest97550irq/166-enp0s3123:49:026
300802399378374,4cyclictest3128988-21kworker/6:121:51:026
300802399377376,1cyclictest3047931-21kworker/6:221:13:026
300802399377375,1cyclictest97550irq/166-enp0s3123:21:026
300802399377375,1cyclictest97550irq/166-enp0s3121:31:036
300802399377375,1cyclictest97550irq/166-enp0s3121:25:026
300802399377375,1cyclictest97550irq/166-enp0s3119:11:026
3007983993770,0cyclictest0-21swapper/100:03:021
300802399376374,1cyclictest97550irq/166-enp0s3122:59:026
300802399376374,1cyclictest97550irq/166-enp0s3121:17:026
300802399376374,1cyclictest97550irq/166-enp0s3121:07:026
300802399376374,1cyclictest0-21swapper/620:25:036
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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