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2026-03-21 - 12:42
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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 10 highest latencies:
System rack3slot0.osadl.org (updated Sat Mar 21, 2026 00:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
16180991310,130cyclictest28093-21kworker/2:421:54:522
1617199106104,1cyclictest9-21ksoftirqd/021:54:530
72042790,10sleep687950irq/25-em1-rx-022:24:546
16188997674,1cyclictest1116-21nfsd21:54:524
16205997538,0cyclictest0-21swapper/621:54:526
215632720,1sleep61620599cyclictest22:36:556
241322560,1sleep124083-21sshd00:05:001
291182540,1sleep665-21ksoftirqd/622:54:096
291182540,1sleep665-21ksoftirqd/622:54:096
317812520,0sleep40-21swapper/423:41:004
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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