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2026-06-21 - 17:11
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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 Sun Jun 21, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2458224839,0sleep10-21swapper/107:24:521
2441624435,0sleep20-21swapper/207:22:572
1774724130,0sleep30-21swapper/307:20:543
2447423228,0sleep00-21swapper/007:23:350
8305060,0irq/26-0000:00:24035-21munin-run09:55:462
339960,0migration/39531-21kthreadcore11:01:063
339960,0migration/36621-21sh10:59:193
339960,0migration/36320-21munin-node08:16:123
339960,0migration/330540-21munin-node11:11:073
339960,0migration/327724-21kthreadcore10:51:053
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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