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2026-03-31 - 15:27
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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 Tue Mar 31, 2026 12:45:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
176612700,5sleep00-21swapper/011:15:150
134491630,4ptp4l2318-21gnome-shell10:52:581
134491610,5ptp4l0-21swapper/210:10:172
134491610,3ptp4l0-21swapper/110:10:121
134491590,4ptp4l0-21swapper/210:20:062
134491570,4ptp4l15857-21ls12:20:193
134491570,3ptp4l8314-21/usr/sbin/munin12:05:152
134491570,3ptp4l23005-21ls07:55:282
134491570,3ptp4l0-21swapper/210:44:582
134491560,5ptp4l0-21swapper/209:04:402
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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