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2026-04-16 - 13:13
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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 Apr 16, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
719924636,0sleep10-21swapper/119:19:071
3266924536,0sleep20-21swapper/219:15:282
708924434,0sleep30-21swapper/319:17:493
718223026,0sleep00-21swapper/019:18:540
73819960,0cyclictest0-21swapper/022:23:110
339960,0migration/332755-21sh00:33:073
339960,0migration/330712-21gltestperf21:05:333
339960,0migration/319089-21sh21:20:233
339960,0migration/312333-21sh21:33:263
29805060,0irq/28-eth0-rx-16987-21fschecks_count23:10:343
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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