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2026-08-22 - 23:48
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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 rackdslot3.osadl.org (updated Sat Aug 22, 2026 12:45:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
139491206171,23phc2sys0-21swapper/307:06:043
40522203169,23sleep20-21swapper/207:08:022
40552201168,22sleep00-21swapper/007:08:040
38962201168,22sleep10-21swapper/107:06:001
331221320,2sleep10-21swapper/111:35:221
1394918263,10phc2sys0-21swapper/307:10:003
450599570,11cyclictest6697-21grep10:35:190
153252570,3sleep00-21swapper/012:00:200
286292550,5sleep1450699cyclictest12:30:131
134391550,2getstats0-21swapper/308:34:593
450599534,11cyclictest19239-21cat09:55:010
450599520,11cyclictest11216-21cat11:50:260
4507995043,4cyclictest3481-21sh08:15:012
450599507,9cyclictest14728-21timerandwakeup10:50:260
226192500,4sleep20-21swapper/208:55:002
450599498,8cyclictest17968-21apt-get11:00:110
450599490,9cyclictest7009-21grep07:15:130
450599490,11cyclictest18111-21cpuspeed08:45:120
281812490,1sleep228182-21irqrtprio09:05:192
450599468,16cyclictest22761-21/usr/sbin/munin08:55:270
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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