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2026-03-16 - 14:55
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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 Mon Mar 16, 2026 00:45:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
134491770,17ptp4l2318-21gnome-shell19:05:581
108012750,5sleep20-21swapper/220:30:192
134491680,33ptp4l25-21ksoftirqd/120:45:261
56702650,5sleep35671-21df_abs21:30:133
134491620,21ptp4l24368-21df_inode22:10:151
149292610,5sleep00-21swapper/019:30:160
134491600,4ptp4l0-21swapper/220:15:162
134491600,4ptp4l0-21swapper/220:15:152
134491600,3ptp4l0-21swapper/021:44:210
134491580,4ptp4l0-21swapper/021:15:170
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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