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2026-08-28 - 05:39
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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 100 highest latencies:
System rackdslot0.osadl.org (updated Fri Aug 28, 2026 00:46:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
7812992510,15cyclictest0-21swapper/121:42:181
7812992510,15cyclictest0-21swapper/121:42:181
781299241,19cyclictest21-21ksoftirqd/123:00:571
781299234,18cyclictest0-21swapper/100:18:581
781299230,20cyclictest21-21ksoftirqd/119:25:001
7808992316,6cyclictest3632-21cat20:00:010
781799225,11cyclictest0-21swapper/219:57:122
781299228,14cyclictest21-21ksoftirqd/121:55:541
781299221,1cyclictest21-21ksoftirqd/100:01:521
780899220,21cyclictest843-21systemd-network22:04:510
781799203,11cyclictest0-21swapper/221:37:212
781299203,2cyclictest21-21ksoftirqd/123:50:001
7812992018,1cyclictest21-21ksoftirqd/123:45:001
7812992016,1cyclictest0-21swapper/122:50:131
780899203,16cyclictest0-21swapper/020:05:140
7808992016,3cyclictest10770-21ntp_kernel_pll_23:55:190
7817991912,3cyclictest0-21swapper/221:02:042
781799191,17cyclictest863-21avahi-daemon20:55:222
781799191,16cyclictest12861-21nfsd421:10:172
781799190,1cyclictest0-21swapper/222:51:462
781299192,16cyclictest21-21ksoftirqd/119:35:011
781299192,16cyclictest21-21ksoftirqd/119:35:011
7812991919,0cyclictest0-21swapper/122:35:021
7812991917,1cyclictest21-21ksoftirqd/121:45:221
7812991917,1cyclictest201rcuc/121:19:171
780899192,1cyclictest0-21swapper/021:55:150
7808991916,2cyclictest22349-21proc_pri23:20:190
780899191,17cyclictest32154-21munin-plugin-st20:50:000
780899190,18cyclictest0-21swapper/000:28:590
780899190,17cyclictest399-20systemd-journal19:44:550
781799182,15cyclictest0-21swapper/223:04:342
7817991816,1cyclictest0-21swapper/200:35:002
7817991816,1cyclictest0-21swapper/200:29:562
781799181,16cyclictest19208-21expr00:10:182
781799181,16cyclictest19208-21expr00:10:182
781799180,17cyclictest843-21systemd-network00:18:502
781799180,17cyclictest14665-21systemctl23:10:002
781299182,1cyclictest21-21ksoftirqd/121:05:161
781299182,15cyclictest21-21ksoftirqd/120:20:141
781299182,15cyclictest21-21ksoftirqd/100:35:531
781299182,15cyclictest21-21ksoftirqd/100:35:521
7812991814,3cyclictest28004-21lxd22:04:511
781299180,3cyclictest11715-21cut21:10:131
781299180,16cyclictest3985-21H222:10:211
781299180,16cyclictest24622-21nfsd400:20:201
781299180,16cyclictest1259-21grep20:50:171
780899182,1cyclictest5065-21uptime20:55:220
780899182,15cyclictest0-21swapper/022:50:130
7808991817,1cyclictest0-21swapper/023:15:170
7808991816,1cyclictest11894-21expr21:10:130
7808991815,2cyclictest12729-21cpuspeed_turbos22:10:140
7808991814,3cyclictest3075-21dpkg23:45:000
780899180,3cyclictest31466-21cut00:35:000
780899180,3cyclictest0-21swapper/021:00:210
780899180,17cyclictest6624-21latency_hist20:05:010
780899180,17cyclictest31380-21df21:45:140
780899180,16cyclictest9967-21cpuspeed_turbos22:05:150
7817991717,0cyclictest0-21swapper/223:44:432
7817991715,1cyclictest0-21swapper/221:55:132
7817991715,1cyclictest0-21swapper/220:50:172
7817991715,1cyclictest0-21swapper/220:30:132
7817991714,2cyclictest8733-21sensors20:05:262
7817991714,2cyclictest489-21ntp_kernel_pll_00:35:202
7817991714,2cyclictest489-21ntp_kernel_pll_00:35:192
7817991714,2cyclictest399-20systemd-journal20:20:042
7817991714,2cyclictest19603-21wc23:15:212
7817991714,2cyclictest16604-21threads00:05:212
7817991714,2cyclictest1351-21lxd21:06:512
7817991714,2cyclictest10967-21nfsd422:05:202
7817991714,2cyclictest10789-21ntp_states23:55:192
781799171,15cyclictest17195-21timerandwakeup23:10:202
781799170,2cyclictest7648-21fschecks_count22:00:152
781799170,2cyclictest6694-21ls22:55:132
781799170,2cyclictest5063-21sed20:00:182
781799170,2cyclictest26098-21postgres20:36:572
781799170,2cyclictest21428-21cstates23:20:142
781799170,2cyclictest18251-21cupsd19:23:252
781799170,2cyclictest14196-21date21:15:012
781799170,2cyclictest13130-21cat22:10:132
781799170,16cyclictest32518-21python319:55:002
781799170,16cyclictest31091-21cat21:45:152
781799170,16cyclictest30161-21cut22:40:132
781799170,16cyclictest29674-21cut22:40:002
781799170,16cyclictest28527-21cstates21:40:132
781799170,16cyclictest28527-21cstates21:40:132
781799170,16cyclictest26409-21cpuspeed_turbos23:30:132
781799170,16cyclictest23824-21expr00:20:142
781799170,16cyclictest23788-21nfsd421:30:182
781799170,16cyclictest23141-21postgres22:29:572
781799170,16cyclictest22289-21expr19:35:142
781799170,16cyclictest16977-21/usr/sbin/munin21:20:182
781799170,16cyclictest15892-21snapd22:30:162
781799170,16cyclictest15175-21grep20:20:002
781799170,16cyclictest1483-21expr21:50:142
7812991715,1cyclictest25200-21cpu21:35:131
7812991715,1cyclictest21-21ksoftirqd/122:10:131
7812991715,1cyclictest21-21ksoftirqd/121:30:141
7812991715,1cyclictest21-21ksoftirqd/119:40:201
7812991715,1cyclictest21-21ksoftirqd/119:25:171
7812991715,1cyclictest15419-21grep23:10:121
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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