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2026-09-17 - 10:42
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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 Thu Sep 17, 2026 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
144768121710,2sleep30-21swapper/319:09:253
162909621530,1sleep11629095-21ssh21:18:131
195429821140,2sleep0241rcuc/000:20:000
19094342510,3sleep30-21swapper/323:54:303
18307432440,1sleep01830746-21munin-plugin-st23:10:010
19590982250,1sleep01959101-21cut00:24:130
16817012250,1sleep10-21swapper/121:47:161
1450604992512,8cyclictest1921629-21grep00:04:240
17422702240,2sleep30-21swapper/322:20:013
1450604992415,8cyclictest1938102-40updatedb.plocat00:12:280
14819472230,3sleep30-21swapper/319:34:223
145060699231,12cyclictest0-21swapper/223:39:042
1450605992310,4cyclictest0-21swapper/100:30:011
145060599225,9cyclictest1487461-21perf19:35:011
145060599221,1cyclictest1947743-21apt-get00:19:031
1450604992218,2cyclictest0-21swapper/000:39:020
1450604992211,7cyclictest0-21swapper/021:10:030
1450605992112,3cyclictest1902896-21runrttasks23:52:441
1450605992111,3cyclictest1757473-21kthreadcore22:29:261
145060499218,7cyclictest0-21swapper/023:55:020
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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