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2026-06-10 - 00:17
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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 rackdslot0.osadl.org (updated Tue Jun 09, 2026 12:45:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
17736992516,9cyclictest0-21swapper/111:05:001
17736992415,5cyclictest21-21ksoftirqd/111:10:191
17737992222,0cyclictest0-21swapper/208:05:012
1773799204,15cyclictest0-21swapper/210:20:112
17737992018,1cyclictest28-21ksoftirqd/211:25:002
1773799200,5cyclictest870-21systemd-logind07:13:522
1773699203,2cyclictest30723-21cpuspeed_turbos11:20:141
17736992017,2cyclictest10380-21perf10:45:001
1773799192,16cyclictest31970-21smtpd09:29:242
1773699192,16cyclictest10587-21chrt07:52:291
17736991914,1cyclictest0-21swapper/111:28:101
1773599193,15cyclictest0-21swapper/012:24:230
1773599192,16cyclictest18698-21grep09:05:130
17735991917,1cyclictest9-21ksoftirqd/010:03:280
17735991916,2cyclictest976-21kernelversion09:30:170
17735991915,3cyclictest0-21swapper/007:10:200
1773599191,17cyclictest0-21swapper/011:35:190
1773799182,1cyclictest0-21swapper/207:55:142
17737991816,1cyclictest0-21swapper/210:45:122
17737991815,2cyclictest15576-21expr11:50:132
17737991814,3cyclictest4035-21H222:10:212
1773799181,16cyclictest6363-21nfsd410:35:202
1773799180,3cyclictest6392-21nfsd412:30:162
1773799180,3cyclictest455-21plymouthd10:25:172
1773799180,14cyclictest0-21swapper/207:35:172
1773799180,14cyclictest0-21swapper/207:35:172
1773699187,7cyclictest21-21ksoftirqd/109:00:011
1773699181,2cyclictest1912-21bounce07:37:331
1773699181,2cyclictest1912-21bounce07:37:331
1773699180,2cyclictest6360-21nfsd412:30:161
17735991815,2cyclictest25977-21ntpq11:10:170
17735991815,2cyclictest21884-21nfsd412:00:180
17735991815,2cyclictest14707-21vmstat08:55:230
17735991815,2cyclictest12222-21chrt08:53:470
17735991814,2cyclictest4590-21find07:40:210
1773599181,15cyclictest0-21swapper/011:21:580
1773599181,15cyclictest0-21swapper/009:51:030
1773599180,16cyclictest4435-21python310:35:000
1773599180,16cyclictest24313-21nfsd410:10:170
17737991716,1cyclictest28-21ksoftirqd/211:28:242
17737991715,1cyclictest28-21ksoftirqd/211:15:012
17737991715,1cyclictest28-21ksoftirqd/209:50:012
17737991715,1cyclictest28-21ksoftirqd/208:50:132
17737991715,1cyclictest0-21swapper/207:25:162
17737991715,1cyclictest0-21swapper/207:17:322
17737991714,2cyclictest9076-21pluginstate09:45:002
17737991714,2cyclictest5776-21chrt09:38:182
17737991714,2cyclictest3985-21H222:10:212
17737991714,2cyclictest27180-21tr09:20:142
17737991714,2cyclictest21898-21cron08:15:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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