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2026-03-28 - 12:13
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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 Sat Mar 28, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2088424637,0sleep30-21swapper/319:17:263
2094623728,0sleep10-21swapper/119:18:081
2072223626,0sleep20-21swapper/219:15:322
2069023228,0sleep00-21swapper/019:15:060
21069991010,0cyclictest3524-21snmpd20:13:120
339960,0migration/33471-21gltestperf21:38:593
339960,0migration/33421-21sh23:11:153
339960,0migration/32899-21sh21:55:483
339960,0migration/325275-21munin-node23:44:003
339960,0migration/324559-21sh22:45:303
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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