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2026-03-09 - 21:32
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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 50 highest latencies:
System rackeslot2.osadl.org (updated Mon Mar 09, 2026 12:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
341321821620,2sleep30-21swapper/311:36:433
346104221060,2sleep30-21swapper/311:58:433
341207021030,2sleep20-21swapper/211:36:022
30282722940,2sleep03028277-21gltestperf07:26:440
32358392910,1sleep20-21swapper/209:56:422
3006660992716,3cyclictest3342867-21irqcore10:56:471
3006660992623,2cyclictest3479540-21grep12:10:001
3006660992614,3cyclictest3175379-21kthreadcore09:21:471
3006660992614,3cyclictest3175379-21kthreadcore09:21:471
3006660992412,3cyclictest134050irq/121-eno110:46:481
3006659992415,5cyclictest1327-21in:imuxsock11:04:550
3006660992314,3cyclictest1288-1atopacctd09:35:001
3006659992310,6cyclictest3366685-21runrttasks11:09:310
3006660992118,2cyclictest3435398-21systemd11:45:011
3006660992118,2cyclictest1290-21dbus-daemon07:10:011
3006660992118,2cyclictest1290-21dbus-daemon07:10:011
3006660992116,3cyclictest0-21swapper/110:10:011
3006659992117,2cyclictest0-21swapper/010:00:010
3006659992116,4cyclictest3254036-21uniq10:06:440
3006661992018,1cyclictest0-21swapper/209:30:012
3006661992017,1cyclictest0-21swapper/211:10:002
3006660992017,2cyclictest3242933-21apt-key10:00:011
3006660992017,2cyclictest1290-21dbus-daemon11:15:011
3006659992013,6cyclictest3423394-21update-ca-certi11:36:560
3006659992011,1cyclictest0-21swapper/010:19:330
33187122190,3sleep30-21swapper/310:41:483
3006661991916,1cyclictest0-21swapper/211:45:002
3006661991916,1cyclictest0-21swapper/209:50:002
3006661991916,1cyclictest0-21swapper/207:55:002
3006660991916,2cyclictest3423642-21sed11:36:561
300665999199,5cyclictest0-21swapper/009:41:520
300665999195,9cyclictest171ktimers/010:21:430
3006659991916,2cyclictest3027166-21latency_hist07:25:010
3006659991916,1cyclictest3498846-21apt-get12:21:420
3006659991915,3cyclictest0-21swapper/007:15:010
3006659991915,2cyclictest0-21swapper/007:40:010
3006659991913,2cyclictest134050irq/121-eno112:31:460
2649091190,2phc2sys0-21swapper/312:12:073
2649091190,2phc2sys0-21swapper/309:45:313
2649091190,1phc2sys0-21swapper/310:16:203
3006661991816,1cyclictest0-21swapper/211:00:022
3006661991815,1cyclictest0-21swapper/210:35:022
3006660991815,2cyclictest3488728-21apt-key12:15:001
3006660991815,2cyclictest3186136-21kthreadcore09:26:481
3006660991815,2cyclictest1288-1atopacctd11:55:011
3006660991815,2cyclictest0-21swapper/107:40:021
3006660991813,3cyclictest3380804-21kthreadcore11:16:491
3006660991813,3cyclictest3006657-21cyclictest10:51:491
300665999189,8cyclictest1288-1atopacctd09:28:550
300665999189,4cyclictest3324111-21runrttasks10:46:330
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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