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2026-04-15 - 17:35
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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 rack1slot1.osadl.org (updated Wed Apr 15, 2026 12:45:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
71882210159,25sleep30-21swapper/307:07:163
72742208157,38sleep00-21swapper/007:08:210
72372203163,26sleep20-21swapper/207:07:552
72702199159,26sleep10-21swapper/107:08:181
65052630,0sleep10-21swapper/111:24:171
101552440,0sleep10-21swapper/112:10:151
123142150,0sleep10-21swapper/107:15:191
81112140,0sleep30-21swapper/312:08:253
266982140,0sleep10-21swapper/111:50:131
748999129,1cyclictest28-21ksoftirqd/209:15:002
7486991210,1cyclictest9-21ksoftirqd/008:10:010
7496991110,1cyclictest35-21ksoftirqd/312:15:003
748999119,1cyclictest28-21ksoftirqd/211:30:002
748999119,1cyclictest14113-21/usr/sbin/munin08:30:202
748699111,7cyclictest16645-21apt-get10:55:100
23112119,1sleep228-21ksoftirqd/210:35:172
749699109,1cyclictest35-21ksoftirqd/312:20:003
749699100,2cyclictest0-21swapper/307:15:013
748999109,1cyclictest28-21ksoftirqd/209:10:012
748999100,5cyclictest0-21swapper/210:40:122
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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