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2026-03-31 - 16:20
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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 Mar 31, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
794625453,0sleep00-21swapper/007:18:530
792125048,0sleep10-21swapper/107:18:341
766524736,0sleep30-21swapper/307:15:403
8036994242,0cyclictest83050irq/26-0000:00:09:28:312
791223526,0sleep20-21swapper/207:18:272
8305060,0irq/26-0000:00:29983-21munin-run07:34:023
8305060,0irq/26-0000:00:2347-21df07:59:143
8305060,0irq/26-0000:00:15264-21irqstats08:29:193
80369966,0cyclictest83050irq/26-0000:00:09:23:312
80369966,0cyclictest0-21swapper/207:24:252
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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