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2026-07-13 - 09:06
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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 100 highest latencies:
System rackeslot2.osadl.org (updated Sun Jul 12, 2026 00:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
345719421120,2sleep30-21swapper/322:49:423
32506572280,2sleep20-21swapper/220:19:442
3163450992821,3cyclictest191rcu_preempt21:35:021
3163449992817,7cyclictest3163447-21cyclictest00:39:420
3163450992614,7cyclictest3337386-21sed21:29:401
3163450992512,8cyclictest3516865-21kthreadcore23:29:401
3163450992512,8cyclictest3489058-21latency23:09:421
3163450992421,2cyclictest3356844-21grep21:40:011
3163450992411,8cyclictest3482708-21latency_hist23:05:011
3163451992320,1cyclictest0-21swapper/222:45:012
3163450992319,3cyclictest3196590-21systemd19:35:011
3163450992319,3cyclictest3170069-21hddtemp_smartct19:15:021
3163450992314,3cyclictest0-21swapper/123:15:031
3163449992311,7cyclictest0-21swapper/021:54:440
3163449992311,6cyclictest0-21swapper/000:34:360
33335412220,2sleep30-21swapper/321:24:413
316345099228,6cyclictest0-21swapper/123:54:371
3163450992211,7cyclictest3429598-21kthreadcore22:29:421
3163450992211,5cyclictest1237-21mta-sts-daemon21:45:071
3163450992210,7cyclictest0-21swapper/120:45:011
3163449992219,2cyclictest3600986-21sh00:25:010
316345099218,8cyclictest0-21swapper/122:54:491
3163450992110,7cyclictest3452134-21latency22:44:441
316345099210,15cyclictest3535616-21ssh23:42:231
316344999219,7cyclictest0-21swapper/022:59:320
3163449992118,2cyclictest3169562-21systemctl19:15:010
316344999211,14cyclictest0-21swapper/023:14:360
3153791211,9phc2sys0-21swapper/323:44:343
316345099208,5cyclictest3332246-21kthreadcore21:24:401
316345099206,9cyclictest3282202-21taskset20:48:421
316345099206,3cyclictest0-21swapper/122:10:021
3163450992017,2cyclictest3382175-21grep21:59:411
3163450992013,3cyclictest3573093-21runrttasks00:09:031
316345099200,14cyclictest3322595-21grep21:19:401
316344999209,6cyclictest0-21swapper/023:09:470
3163449992017,2cyclictest660-21dbus-daemon00:30:010
3163449992013,2cyclictest34233601systemd-run22:25:010
3163449992011,8cyclictest0-21swapper/000:04:410
3163451991917,1cyclictest0-21swapper/222:40:012
3163451991917,1cyclictest0-21swapper/221:30:012
3163451991917,1cyclictest0-21swapper/200:40:012
3163451991917,1cyclictest0-21swapper/200:00:012
3163451991916,1cyclictest0-21swapper/223:20:012
3163451991916,1cyclictest0-21swapper/223:00:012
316345099198,6cyclictest3169569-21munin-node23:34:541
316345099198,4cyclictest3607888-21timedrift00:29:471
316345099197,7cyclictest0-21swapper/100:39:401
316345099196,8cyclictest3528977-21acpi23:39:321
316345099196,8cyclictest0-21swapper/100:14:391
316345099192,8cyclictest3220818-21cat19:54:481
3163450991912,3cyclictest3469272-21runrttasks22:58:351
3163450991911,2cyclictest3163447-21cyclictest22:37:211
316344999198,6cyclictest0-21swapper/023:29:320
3163449991916,2cyclictest3437930-21dump-pmu-power22:35:000
3163449991914,4cyclictest3340852-21kthreadcore21:29:420
3163449991911,7cyclictest3507711-21if_err_enp1s023:24:390
34095592180,2sleep20-21swapper/222:17:342
3163451991815,1cyclictest0-21swapper/221:45:022
316345099189,5cyclictest1242-21mta-sts-daemon19:22:531
316345099188,5cyclictest808-21hwrng19:46:581
316345099186,7cyclictest1247-21mta-sts-daemon22:14:291
316345099186,5cyclictest3203155-21taskset19:40:141
316345099183,10cyclictest0-21swapper/122:19:211
316345099182,7cyclictest0-21swapper/100:20:361
3163450991815,2cyclictest3251345-21/usr/sbin/munin20:20:011
3163450991811,2cyclictest1237-21mta-sts-daemon22:24:031
3163450991810,4cyclictest3544098-21cpuspeed_turbos23:49:361
3163450991810,4cyclictest3544098-21cpuspeed_turbos23:49:361
316344999188,6cyclictest0-21swapper/022:20:010
316344999186,7cyclictest0-21swapper/023:49:340
316344999186,7cyclictest0-21swapper/023:49:340
3163449991816,1cyclictest3190426-21gpgv19:30:010
3163449991815,2cyclictest660-21dbus-daemon20:10:010
3163449991815,2cyclictest660-21dbus-daemon19:20:010
3163449991815,2cyclictest1246-21mta-sts-daemon21:35:050
3153791183,2phc2sys0-21swapper/321:19:423
3153791180,2phc2sys0-21swapper/323:32:353
3153791180,2phc2sys0-21swapper/322:43:463
33286122170,0sleep070-21kcompactd021:23:590
3163451991715,1cyclictest0-21swapper/223:15:022
3163451991715,1cyclictest0-21swapper/200:10:022
3163451991714,1cyclictest0-21swapper/222:49:412
3163451991714,1cyclictest0-21swapper/222:04:472
3163451991714,1cyclictest0-21swapper/221:15:012
316345099174,7cyclictest1020-21runrttasks23:17:251
316345099173,9cyclictest3557374-21ssh23:56:191
316345099173,5cyclictest3611144-21basename00:34:401
316345099171,6cyclictest3293976-21munin-run20:55:021
316345099171,6cyclictest0-21swapper/122:48:301
316345099171,6cyclictest0-21swapper/121:41:131
3163450991714,2cyclictest3512658-21systemd-run23:25:031
3163450991714,2cyclictest3312301-21runrttasks21:10:091
3163450991713,3cyclictest3264763-21gltestperf20:34:371
316345099171,11cyclictest3588227-21cpuspeed_turbos00:19:361
316345099170,12cyclictest3387379-21ssh22:02:111
316345099170,12cyclictest3306244-21taskset21:06:161
316345099170,12cyclictest3257784-21taskset20:26:221
316345099170,11cyclictest3568684-21cut00:04:411
316345099170,11cyclictest3257582-21munin-run20:25:021
316344999179,7cyclictest0-21swapper/021:49:350
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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