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2026-01-12 - 04:08
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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 rackeslot2.osadl.org (updated Mon Jan 12, 2026 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
27492952760,1sleep10-21swapper/119:48:041
31144382300,1sleep10-21swapper/123:38:041
270035899290,3cyclictest3156056-21munin-run00:00:000
2700359992819,2cyclictest134050irq/121-eno123:45:011
2700358992315,7cyclictest0-21swapper/023:40:010
2700358992314,5cyclictest2874066-21threads21:23:110
32181942220,2sleep20-21swapper/200:33:322
2700358992214,4cyclictest3006866-21kthreadcore22:38:070
2700358992211,6cyclictest0-21swapper/023:20:010
2700359992118,2cyclictest2875588-21perf21:25:001
2700358992118,2cyclictest3138062-21sh23:50:020
2700358992110,7cyclictest2905980-21awk21:43:030
2700359992017,2cyclictest3219257-21latency_hist00:35:011
2700359992017,2cyclictest257-21systemd-journal00:20:021
2700359992017,2cyclictest0-21swapper/120:45:011
2700358992017,2cyclictest1326-21systemd-logind23:55:010
2700358992017,2cyclictest0-21swapper/022:00:000
2700358992011,5cyclictest3000236-21unixbench_multi22:33:120
2649091200,2phc2sys0-21swapper/322:48:143
2902298190,3rtkit-daemon4114978-21snmpd23:19:261
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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