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2025-11-18 - 04:05
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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 Tue Nov 18, 2025 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2458324839,0sleep20-21swapper/218:17:532
2447423827,0sleep30-21swapper/318:16:383
2442923824,0sleep00-21swapper/018:16:070
2449523324,0sleep10-21swapper/118:16:521
329970,0watchdog/3299250irq/32-eth0-rx-23:40:443
329970,0watchdog/30-21swapper/322:30:283
29925070,0irq/32-eth0-rx-29229-21cpuspeed_turbos18:45:223
248449970,0cyclictest0-21swapper/223:05:262
339960,0migration/32600-21munin-node21:50:283
339960,0migration/324320-21sh22:56:153
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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