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2026-04-30 - 07:05
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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 30, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2058323934,0sleep20-21swapper/219:20:582
2062523526,0sleep10-21swapper/119:21:251
2052823127,0sleep30-21swapper/319:20:193
2031323127,0sleep00-21swapper/019:17:470
20703991010,0cyclictest3524-21snmpd00:47:580
4160,0ktimersoftd/011741-21latency_hist00:36:280
339960,0migration/312541-21sh00:38:373
29815060,0irq/29-eth0-tx-13851-21munin-node20:01:520
29805060,0irq/28-eth0-rx-15817-21sadc22:11:283
207039966,0cyclictest0-21swapper/021:56:400
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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