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2025-12-16 - 10:59
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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 20 highest latencies:
System rack3slot6.osadl.org (updated Tue Dec 16, 2025 00:45:04)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
560329915,39sleep00-21swapper/019:06:060
614199768,61cyclictest0-21swapper/021:40:150
542127431,29sleep10-21swapper/119:05:291
6141997223,15cyclictest0-21swapper/023:55:150
6141997032,18cyclictest14-21ksoftirqd/021:20:000
6144996833,12cyclictest26-21ksoftirqd/119:45:001
6141996844,16cyclictest31090-21apt-get23:20:130
296462680,6sleep0171rcuc/023:15:220
6141996529,12cyclictest14-21ksoftirqd/020:55:000
6144996328,13cyclictest26-21ksoftirqd/120:00:051
614199634,51cyclictest18272-21apt-get00:15:130
6144996227,14cyclictest26-21ksoftirqd/123:39:021
6144996219,12cyclictest26-21ksoftirqd/100:10:141
6144996144,11cyclictest26-21ksoftirqd/100:00:161
6144996122,14cyclictest26-21ksoftirqd/120:30:011
6144996121,12cyclictest26-21ksoftirqd/120:40:001
614199618,46cyclictest0-21swapper/022:05:160
614199618,46cyclictest0-21swapper/022:05:150
6141996117,17cyclictest250-21systemd-journal19:40:000
6144996021,13cyclictest26-21ksoftirqd/122:10:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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