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2026-07-29 - 22:19
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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 Wed Jul 29, 2026 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
405323728,0sleep30-21swapper/307:24:383
436923526,0sleep10-21swapper/107:28:161
417323526,0sleep20-21swapper/207:25:572
413623228,0sleep00-21swapper/007:25:350
44999960,0cyclictest0-21swapper/112:34:051
44999960,0cyclictest0-21swapper/109:49:111
44899966,0cyclictest0-21swapper/012:54:090
339960,0migration/36518-21sh10:38:433
339960,0migration/34432-21fschecks_time11:34:073
339960,0migration/34152-21munin-node09:59:083
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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