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2026-08-19 - 01:45
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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 rackdslot3.osadl.org (updated Tue Aug 18, 2026 12:45:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
224912208174,23sleep20-21swapper/207:05:592
139491208175,22phc2sys0-21swapper/307:08:293
227852203170,22sleep00-21swapper/007:09:420
227242202169,22sleep10-21swapper/107:08:561
2639821370,6sleep22310199cyclictest11:45:202
1809221230,1sleep00-21swapper/008:05:220
202712770,5sleep120277-21dump-pmu-power09:20:001
139391720,1ptp4l391rcuc/309:45:263
201592580,2sleep00-21swapper/010:25:220
139391530,1ptp4l391rcuc/311:50:373
63742510,1sleep20-21swapper/209:55:282
243062510,1sleep20-21swapper/211:40:222
139391510,1ptp4l391rcuc/309:53:313
134491500,2getstats0-21swapper/311:28:263
139391490,1ptp4l401ktimersoftd/310:31:533
139391480,1ptp4l391rcuc/308:36:013
139391460,0ptp4l401ktimersoftd/309:57:583
2310199450,2cyclictest0-21swapper/211:05:232
139391440,0ptp4l401ktimersoftd/310:49:143
57898420,1rtkit-daemon577-21rtkit-daemon12:16:082
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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