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2025-09-18 - 05:02
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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 rack1slot2.osadl.org (updated Thu Sep 18, 2025 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2329323828,0sleep30-21swapper/318:20:413
2354823727,0sleep20-21swapper/218:23:402
2338623725,0sleep10-21swapper/118:21:471
2321323725,0sleep00-21swapper/018:19:460
236319984,0cyclictest28649-21awk18:49:061
236319983,0cyclictest21689-21awk19:29:071
329970,0watchdog/30-21swapper/322:02:063
329970,0watchdog/30-21swapper/319:44:073
29925070,0irq/32-eth0-rx-5228-21grep23:39:073
29925070,0irq/32-eth0-rx-0-21swapper/323:45:333
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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