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2026-04-16 - 15:19
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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
Compare latency of primary with shadow system
Characteristics of the 10 highest latencies:
System rackfslot7.osadl.org (updated Thu Apr 16, 2026 00:46:08)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3726222998628,39cyclictest3786032-21taskset20:55:304
372622299857,59cyclictest3859023-21df_inode23:10:124
372621899790,19cyclictest0-21swapper/022:10:150
3726222997820,39cyclictest3764852-21systemctl20:20:004
3726222997514,59cyclictest3892866-21ld00:10:194
3726222997436,19cyclictest3846669-21sed22:45:224
3726222997334,20cyclictest3762105-21systemd-run20:15:014
3726222997313,59cyclictest0-21swapper/400:35:394
3726222997214,39cyclictest3783249-21grep20:50:234
3726222997214,19cyclictest0-21swapper/423:20:384
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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