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2025-12-19 - 08:54
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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 rackbslot7.osadl.org (updated Fri Dec 19, 2025 00:44:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4461214411,100sleep14466-21modprobe19:09:351
46179912662,14cyclictest0-21swapper/219:24:572
46179910887,15cyclictest310-21in:imuxsock21:44:352
46179910480,16cyclictest372-21sshd21:27:462
46179910480,16cyclictest372-21sshd21:27:462
4612991043,71cyclictest2411-21apt-get22:19:521
46129910277,15cyclictest205-21systemd-journal23:59:351
46129910077,16cyclictest4600-21cyclictest21:34:371
461299949,73cyclictest19026-21apt-get23:09:501
4617999261,12cyclictest181rcu_preempt22:22:032
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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