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2026-06-21 - 05:43
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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 rack3slot6.osadl.org (updated Sun Jun 21, 2026 00:45:04)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
559621280,15chrt5601-21grep22:20:261
826321080,6sleep10-21swapper/122:25:471
1188991026,84cyclictest3533-21apt-get19:15:130
1188999020,62cyclictest28470-21aten2.4-expect23:25:160
3185828929,49sleep10-21swapper/119:05:031
1188998964,12cyclictest14-21ksoftirqd/020:45:230
1188998821,52cyclictest0-21swapper/019:25:120
1188998812,61cyclictest0-21swapper/020:25:150
1188998724,20cyclictest457-21dbus-daemon21:20:000
1188998715,64cyclictest243-21systemd-journal00:01:390
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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