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2025-12-25 - 15:56
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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 10 highest latencies:
System rack0slot2.osadl.org (updated Thu Dec 25, 2025 12:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
365764726352,8sleep50-21swapper/507:07:055
3658098995145,5cyclictest650-21systemd-journal09:09:077
365759624939,7sleep40-21swapper/407:06:244
3658098994841,6cyclictest3690865-21latency_hist07:24:077
3658091994038,2cyclictest3836259-21kworker/u16:5+events_unbound09:09:224
365771423929,7sleep60-21swapper/607:08:026
36485382383,29sleep70-21swapper/707:04:107
3658098993529,5cyclictest3991039-21latency_hist09:59:077
3658098993529,5cyclictest3991039-21latency_hist09:59:077
3658091993533,2cyclictest4039865-21kworker/u16:3+events_unbound10:59:064
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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