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2025-11-20 - 04:48
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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
Characteristics of the 20 highest latencies:
System rackcslot4.osadl.org (updated Thu Nov 20, 2025 00:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
28188222274231,28sleep00-21swapper/019:09:080
28186792260218,27sleep10-21swapper/119:07:351
125899710,6rtkit-daemon2896820-21munin-run22:05:001
125899640,3rtkit-daemon0-21swapper/020:30:240
125899610,3rtkit-daemon0-21swapper/020:13:580
125899590,5rtkit-daemon1257-21rtkit-daemon23:02:061
125899590,3rtkit-daemon0-21swapper/019:19:110
125899580,3rtkit-daemon0-21swapper/021:42:300
125899580,3rtkit-daemon0-21swapper/021:10:180
125899580,3rtkit-daemon0-21swapper/020:21:270
125899580,3rtkit-daemon0-21swapper/019:21:430
2819007995711,5cyclictest2922607-21apt-get22:40:161
125899570,3rtkit-daemon0-21swapper/020:26:460
281900799563,8cyclictest2979432-21apt-get00:00:141
281900799562,9cyclictest2958280-21apt-get23:30:131
125899560,3rtkit-daemon0-21swapper/019:32:490
125899550,3rtkit-daemon0-21swapper/023:18:030
125899550,3rtkit-daemon0-21swapper/019:59:430
281900799541,13cyclictest2944044-21apt-get23:10:121
125899540,3rtkit-daemon0-21swapper/021:32:270
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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