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2026-04-19 - 18:40
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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 Apr 19, 2026 12:45:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
101412232168,52sleep20-21swapper/207:08:242
139591230168,51phc2sys0-21swapper/307:08:073
99482205172,22sleep00-21swapper/007:05:530
100162205171,23sleep10-21swapper/107:06:471
1558521550,1sleep00-21swapper/010:40:230
102752149123,14sleep20-21swapper/207:10:012
139291940,1ptp4l401ktimersoftd/307:35:153
139291710,1ptp4l391rcuc/309:30:253
49152630,8sleep21056999cyclictest08:05:002
86722600,4sleep28662-21apt-config11:35:012
139291560,1ptp4l391rcuc/309:50:183
139291550,1ptp4l401ktimersoftd/309:08:193
139291520,0ptp4l401ktimersoftd/307:10:223
139291500,1ptp4l401ktimersoftd/309:29:473
41298420,2rtkit-daemon411-21rtkit-daemon12:02:411
139291420,0ptp4l401ktimersoftd/310:14:003
10569994237,2cyclictest33-21ksoftirqd/207:25:002
10568994237,3cyclictest25-21ksoftirqd/110:40:001
10568994235,4cyclictest15453-21cron09:35:001
10567994237,3cyclictest9-21ksoftirqd/011:00:000
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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