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2026-07-27 - 02:01
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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 Mon Jul 27, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
596825049,0sleep10-21swapper/119:24:121
624224231,0sleep20-21swapper/219:27:252
602623632,0sleep30-21swapper/319:24:543
620223319,0sleep00-21swapper/019:26:550
8305070,0irq/26-0000:00:13704-21munin-run20:18:403
8305060,0irq/26-0000:00:4179-21if_eth1.219:48:563
8305060,0irq/26-0000:00:28069-21idleruntime-cro20:28:403
64509960,0cyclictest0-21swapper/000:15:470
339960,0migration/330044-21sh23:46:113
339960,0migration/328300-21sh23:26:203
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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