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2026-06-17 - 15:55
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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 Wed Jun 17, 2026 12:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
382770421010,2sleep30-21swapper/310:20:233
39759182970,2sleep30-21swapper/312:00:233
3570315993221,6cyclictest3800252-21latency_hist10:05:010
3570315993020,6cyclictest3881556-21systemd-run11:00:020
3570315992919,6cyclictest3735367-21kernelversion09:20:190
39253582280,2sleep20-21swapper/211:27:232
3570315992716,6cyclictest0-21swapper/012:15:020
3570315992613,7cyclictest0-21swapper/009:35:130
3570317992421,1cyclictest0-21swapper/212:15:012
3570316992421,2cyclictest3034076-1atop09:50:011
3570316992318,1cyclictest67250irq/126-eno112:00:241
3570316992316,1cyclictest67250irq/126-eno107:20:121
3570315992313,9cyclictest3732396-21sshd09:16:160
3570317992219,1cyclictest0-21swapper/208:20:002
3570316992219,2cyclictest3993208-21wc12:15:021
3570316992219,2cyclictest3706796-21idleruntime-cro09:00:011
3570316992214,2cyclictest1020-21runrttasks10:09:451
3570316992212,4cyclictest3713128-21cat09:05:031
357031599227,5cyclictest0-21swapper/011:45:240
3570315992213,5cyclictest693-21systemd-logind11:55:030
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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