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2025-09-10 - 08:28
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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 20 highest latencies:
System rackaslot8.osadl.org (updated Wed Sep 10, 2025 00:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
320952292260,20sleep10-21swapper/119:09:291
318902284229,43sleep20-21swapper/219:06:532
318492279246,20sleep30-21swapper/319:06:223
317762263229,22sleep00-21swapper/019:05:340
180172650,0sleep20-21swapper/221:55:072
241232600,0sleep10-21swapper/121:10:291
105332600,0sleep30-21swapper/300:37:253
52112590,0sleep00-21swapper/022:56:320
38352560,0sleep30-21swapper/321:20:163
75712200,0sleep10-21swapper/100:10:171
301102180,1sleep030107-21sendmail_mailst21:15:200
66822170,0sleep10-21swapper/100:10:011
48622160,0sleep30-21swapper/322:09:103
45862140,0sleep20-21swapper/219:16:502
5661290,4sleep334-21ksoftirqd/322:56:593
322549994,3cyclictest19982-21systemd-journal00:32:383
322549991,5cyclictest19982-21systemd-journal20:15:133
322499994,3cyclictest19982-21systemd-journal21:11:072
322459998,1cyclictest22-21ksoftirqd/100:40:001
322459993,1cyclictest141rcu_preempt00:15:021
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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