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2025-12-07 - 09:23
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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 rackdslot2.osadl.org (updated Sun Dec 07, 2025 00:45:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
55342207174,22sleep20-21swapper/219:07:082
136691206172,23phc2sys0-21swapper/319:07:353
57242205172,22sleep10-21swapper/119:09:311
57612204174,20sleep00-21swapper/019:09:590
674621690,6sleep1605699cyclictest19:10:181
1156021630,6sleep2605799cyclictest19:20:192
136591730,1ptp4l391rcuc/321:02:463
204992670,4sleep220503-21irqrtprio23:00:192
252722640,5sleep09-21ksoftirqd/022:02:560
148152620,2sleep20-21swapper/223:55:162
303572600,1sleep30-21swapper/321:05:233
605699574,51cyclictest826-21kworker/1:021:42:551
605599574,17cyclictest726-21awk23:25:210
204472570,4sleep1241ktimersoftd/100:05:251
136591570,1ptp4l24660-21/usr/sbin/munin23:10:153
6056995514,39cyclictest23310-21kworker/1:019:25:441
136591550,1ptp4l401ktimersoftd/322:39:003
605599543,11cyclictest26531-21apt-config00:20:010
605599523,15cyclictest5727-21sed20:15:200
605599523,15cyclictest18802-21cat21:50:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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