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2026-08-31 - 02:38
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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 Mon Aug 31, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1865624938,0sleep30-21swapper/319:27:053
1900823626,0sleep20-21swapper/219:31:122
1874123627,0sleep10-21swapper/119:28:031
1874523423,0sleep00-21swapper/019:28:060
4160,0ktimersoftd/00-21swapper/023:20:590
339960,0migration/330830-21sh23:04:373
339960,0migration/330688-21fschecks_time22:46:483
339960,0migration/325403-21munin-node23:21:463
339960,0migration/319989-21sh23:56:273
339960,0migration/31681-21sh01:01:153
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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