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2026-01-07 - 15:16
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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 Wed Jan 07, 2026 12:43:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
220251821160,4sleep02202521-21sort10:13:090
24061362990,2sleep30-21swapper/312:05:023
1943987992619,6cyclictest2289165-21munin-plugin-st11:00:011
2649091250,5phc2sys0-21swapper/308:03:053
194398799243,2cyclictest2359151-21ssh11:38:131
1943988992321,1cyclictest0-21swapper/208:10:022
1943986992314,5cyclictest2318155-21/usr/sbin/munin11:18:060
1943986992219,2cyclictest2280385-21/usr/sbin/munin10:55:010
1943986992212,6cyclictest0-21swapper/009:45:010
194398699217,8cyclictest0-21swapper/011:38:010
1943986992117,3cyclictest1327-21in:imuxsock08:45:010
1943986992112,8cyclictest0-21swapper/011:23:040
2649091200,2phc2sys0-21swapper/311:46:283
1943988992018,1cyclictest0-21swapper/207:15:012
1943987992017,2cyclictest2172823-21systemd09:55:021
1943987992017,2cyclictest1326-21systemd-logind11:55:011
1943987992016,3cyclictest1326-21systemd-logind12:15:011
194398699201,1cyclictest2408223-21ssh12:08:030
2649091190,2phc2sys0-21swapper/312:18:023
1943988991916,1cyclictest0-21swapper/208:55:012
194398899191,2cyclictest0-21swapper/211:27:102
1943987991916,2cyclictest2276141-21ps10:53:111
1943987991916,2cyclictest1290-21dbus-daemon09:25:001
1943987991915,2cyclictest134050irq/121-eno109:28:131
1943987991911,3cyclictest1288-1atopacctd11:18:091
194398699199,5cyclictest0-21swapper/010:18:100
194398699198,6cyclictest0-21swapper/012:38:040
194398699198,6cyclictest0-21swapper/010:33:180
194398699198,6cyclictest0-21swapper/010:33:180
1943986991916,2cyclictest0-21swapper/011:45:010
1943986991916,2cyclictest0-21swapper/007:25:010
1943986991911,4cyclictest2264386-21kworker/u16:2-nfsiod12:21:370
2649091180,2phc2sys0-21swapper/310:17:063
194398899187,5cyclictest0-21swapper/208:50:022
194398899182,5cyclictest23998272sleep212:03:092
1943988991815,1cyclictest0-21swapper/211:40:012
1943988991815,1cyclictest0-21swapper/210:29:352
1943988991815,1cyclictest0-21swapper/209:53:102
194398899181,1cyclictest0-21swapper/211:42:172
1943987991815,2cyclictest28938-21cron12:25:001
1943987991815,2cyclictest2444720-21gltestperf12:28:071
1943987991815,2cyclictest2067679-21perf08:50:001
1943987991815,2cyclictest1327-21in:imuxsock07:25:011
1943987991815,2cyclictest1288-1atopacctd09:05:021
1943987991813,3cyclictest2104367-21kthreadcore09:18:121
1943987991812,2cyclictest134050irq/121-eno109:38:161
1943987991812,1cyclictest191rcu_preempt09:33:381
1943987991810,3cyclictest2206782-21sensors_fan10:13:151
1943986991815,2cyclictest2298090-21idleruntime-cro11:05:010
1943986991815,2cyclictest2073702-21munin-plugin-st08:55:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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