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2026-05-08 - 01:23
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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 rackdslot0.osadl.org (updated Thu May 07, 2026 12:45:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1805999230,17cyclictest0-21swapper/111:20:211
18058992118,2cyclictest30744-21latency12:15:150
18058992118,2cyclictest30744-21latency12:15:150
1806099203,2cyclictest1614-21bounce07:35:232
1806099202,17cyclictest18763-21smtpd09:01:202
1806099193,15cyclictest26639-21cat07:25:142
1806099193,15cyclictest0-21swapper/210:16:002
18060991915,3cyclictest0-21swapper/207:47:112
1806099190,1cyclictest0-21swapper/211:20:212
1806099190,18cyclictest0-21swapper/212:17:582
1806099190,18cyclictest0-21swapper/212:17:582
1806099190,18cyclictest0-21swapper/209:42:042
1806099190,15cyclictest0-21swapper/210:47:482
1805999193,15cyclictest0-21swapper/107:15:151
1805999192,2cyclictest7515-21chrt08:42:411
18059991914,4cyclictest843-21systemd-network10:10:511
1805999190,1cyclictest0-21swapper/109:30:151
1805999190,18cyclictest0-21swapper/111:49:541
1805999190,17cyclictest7140-21grep09:40:131
18058991916,2cyclictest3414-21master10:52:520
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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