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2026-04-03 - 11:45
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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 10 highest latencies:
System rackdslot1.osadl.org (updated Fri Apr 03, 2026 00:45:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
134491660,5ptp4l28954-21apt-get23:55:123
247302590,3sleep124731-21grep22:35:211
134491590,5ptp4l0-21swapper/219:08:312
134491590,5ptp4l0-21swapper/100:35:141
134491570,3ptp4l0-21swapper/123:55:231
134491570,3ptp4l0-21swapper/123:05:241
134491560,4ptp4l0-21swapper/120:11:071
134491560,3ptp4l0-21swapper/322:35:123
134491560,3ptp4l0-21swapper/320:31:483
134491560,3ptp4l0-21swapper/022:35:190
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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