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2026-06-10 - 05:06
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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 10, 2026 00:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
244801721150,2sleep30-21swapper/323:10:363
211595899274,5cyclictest2401285-21cut22:40:300
2115958992421,2cyclictest1-21systemd23:05:020
2115960992320,1cyclictest0-21swapper/200:20:012
2115960992220,1cyclictest0-21swapper/221:50:012
2115960992219,1cyclictest0-21swapper/221:00:012
2115960992219,1cyclictest0-21swapper/200:00:002
2115959992218,2cyclictest0-21swapper/123:50:021
2115959992215,3cyclictest2267737-21kthreadcore21:10:291
25039462210,2sleep1341rcuc/123:50:301
2115958992119,1cyclictest2294705-21apt-config21:30:010
2115958992118,2cyclictest2265272-21/usr/sbin/munin21:10:010
2115959992013,3cyclictest0-21swapper/123:00:011
2115959992013,3cyclictest0-21swapper/121:40:011
2115958992017,2cyclictest781-21gmain00:33:400
2115958992017,2cyclictest0-21swapper/022:15:000
2115958992012,6cyclictest2555925-21kthreadcore00:25:300
2115958992012,6cyclictest0-21swapper/000:00:020
2115958992010,6cyclictest0-21swapper/023:40:230
3153791190,1phc2sys0-21swapper/323:51:053
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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