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2026-06-22 - 17:42
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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 Jun 22, 2026 12:45:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2680221740,6sleep21823699cyclictest12:05:192
134491760,9ptp4l17566-21users07:05:263
1823699749,62cyclictest29858-21awk12:10:272
18236997110,58cyclictest20492sleep210:00:472
1823699698,58cyclictest2884-21irqrtprio07:45:202
18236996812,53cyclictest9723-21cstates11:30:152
1823699667,56cyclictest0-21swapper/207:57:362
1823699656,16cyclictest22191-21awk09:35:242
134491640,4ptp4l4400-21apt-get07:50:110
1823699637,53cyclictest19153-21fschecks_time11:50:152
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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