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2026-04-04 - 07:33
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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 792 highest latencies:
System rackeslot2.osadl.org (updated Sat Apr 04, 2026 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
352504821020,1sleep10-21swapper/123:18:461
355246021010,2sleep30-21swapper/323:36:123
35014792410,1sleep10-21swapper/123:01:431
35966432370,2sleep20-21swapper/200:06:132
33513482370,2sleep10-21swapper/121:24:431
3175207992724,2cyclictest3585796-21awk00:00:001
3175206992715,7cyclictest3625671-21irqrtprio00:26:110
3175208992623,1cyclictest0-21swapper/221:45:002
33682152250,2sleep20-21swapper/221:36:102
33682152250,2sleep20-21swapper/221:36:102
3175207992513,7cyclictest36-21ksoftirqd/119:30:021
32240102240,1sleep13224011-21cat19:46:121
3175207992418,2cyclictest191rcu_preempt22:45:001
3175207992414,4cyclictest3254283-21if_enp1s0.820:11:091
3175207992414,4cyclictest0-21swapper/122:16:051
3175206992410,7cyclictest0-21swapper/022:01:050
36165792230,1sleep0171ktimers/000:21:060
317520899234,5cyclictest0-21swapper/223:50:012
3175207992311,7cyclictest36-21ksoftirqd/121:45:011
3175206992315,5cyclictest3506158-21kthreadcore23:06:140
3175207992219,2cyclictest3616003-21sh00:20:011
3175207992216,2cyclictest134050irq/121-eno100:36:081
3175207992212,4cyclictest3301630-21cut20:46:131
3175207992211,6cyclictest191rcu_preempt23:55:021
3175206992212,6cyclictest0-21swapper/021:25:010
3175208992118,1cyclictest0-21swapper/220:40:002
317520799219,7cyclictest36-21ksoftirqd/123:10:011
3175207992118,2cyclictest3290696-21apt-key20:40:001
3175207992115,2cyclictest191rcu_preempt21:01:171
3175207992115,1cyclictest191rcu_preempt22:36:061
3175207992114,2cyclictest191rcu_preempt20:41:181
3175207992114,1cyclictest191rcu_preempt21:51:091
3175207992112,4cyclictest3279709-21uname20:31:111
3175207992111,6cyclictest36-21ksoftirqd/121:11:131
3175207992111,1cyclictest0-21swapper/120:20:001
3175207992111,1cyclictest0-21swapper/120:20:001
3175207992110,4cyclictest0-21swapper/122:12:101
3175206992118,2cyclictest3615925-21munin-plugin-st00:20:000
3175206992112,6cyclictest3332158-21kthreadcore21:11:130
3175206992111,5cyclictest3603589-21kthreadcore00:11:100
3175206992110,7cyclictest0-21swapper/019:46:050
383433398200,3rtkit-daemon3851705-21mta-sts-daemon20:20:111
383433398200,3rtkit-daemon3851705-21mta-sts-daemon20:20:111
3175208992017,1cyclictest0-21swapper/222:00:002
317520799209,4cyclictest0-21swapper/123:42:291
317520799204,5cyclictest3444097-21kthreadcore22:26:111
317520799203,11cyclictest3436494-21cut22:21:131
317520799203,11cyclictest3408160-21cut22:01:131
317520799202,12cyclictest3192544-21cut19:21:131
3175207992017,2cyclictest3555661-21latency_hist23:40:001
3175207992017,2cyclictest3540616-21systemd23:30:001
3175207992017,2cyclictest3247035-21latency_hist20:05:021
3175207992015,1cyclictest191rcu_preempt22:06:081
3175207992014,2cyclictest191rcu_preempt00:06:121
3175207992014,2cyclictest134050irq/121-eno121:35:021
3175207992013,3cyclictest36-21ksoftirqd/100:31:171
3175207992012,2cyclictest3306761-21kthreadcore20:51:131
3175207992012,1cyclictest191rcu_preempt00:21:031
317520799200,5cyclictest3181474-21munin-node19:15:011
317520699209,6cyclictest0-21swapper/023:22:090
317520699207,7cyclictest0-21swapper/022:21:060
3175206992011,5cyclictest3534081-21cstates23:26:070
3175208991916,1cyclictest0-21swapper/219:30:012
317520899190,10cyclictest0-21swapper/200:31:052
317520799199,6cyclictest36-21ksoftirqd/123:00:021
317520799199,4cyclictest0-21swapper/120:09:321
317520799194,4cyclictest3230575-21tr19:51:131
317520799193,5cyclictest3541913-21gltestperf23:31:091
317520799193,10cyclictest3310302-21aten_repower_en20:56:051
317520799191,6cyclictest3215691-21apt-get19:41:061
3175207991916,2cyclictest3593529-21sh00:05:011
3175207991916,2cyclictest3531470-21sh23:21:171
3175207991915,1cyclictest191rcu_preempt00:29:341
3175207991914,1cyclictest191rcu_preempt19:37:141
3175207991911,2cyclictest3570095-21sh23:48:091
3175207991910,4cyclictest3203803-21grep19:31:081
3175206991916,2cyclictest3548317-21sh23:35:010
3175206991916,2cyclictest3234006-21idleruntime-cro19:55:000
3175206991916,2cyclictest3202776-21apt-key19:30:010
34949832180,2sleep30-21swapper/323:00:003
3175208991815,1cyclictest0-21swapper/223:01:162
3175208991815,1cyclictest0-21swapper/221:50:012
3175208991815,1cyclictest0-21swapper/221:35:022
3175208991815,1cyclictest0-21swapper/219:25:002
3175208991815,1cyclictest0-21swapper/200:00:012
3175208991814,2cyclictest0-21swapper/223:40:002
317520799188,2cyclictest0-21swapper/120:26:131
317520799187,2cyclictest0-21swapper/119:16:121
317520799185,3cyclictest0-21swapper/121:25:471
317520799183,6cyclictest3236583-21kthreadcore19:56:121
317520799181,6cyclictest36-21ksoftirqd/122:51:401
3175207991814,1cyclictest191rcu_preempt21:05:511
3175207991811,3cyclictest36-21ksoftirqd/100:15:011
3175207991811,2cyclictest3370041-21kthreadcore21:36:121
3175207991811,2cyclictest3370041-21kthreadcore21:36:121
317520799181,11cyclictest3340940-21cut21:16:141
3175207991810,3cyclictest3510653-21sh23:10:521
3175206991815,2cyclictest3495084-21systemd-run23:00:010
3175206991815,2cyclictest3336556-21kworker/u16:0-rpciod21:26:210
3175206991815,2cyclictest3196242-21latency_hist19:25:000
3175206991811,6cyclictest3522226-21kthreadcore23:16:120
2649091180,1phc2sys0-21swapper/321:21:573
317520899174,5cyclictest0-21swapper/200:11:042
3175208991715,1cyclictest0-21swapper/222:40:022
3175208991715,1cyclictest0-21swapper/221:25:022
3175208991715,1cyclictest0-21swapper/200:05:012
3175208991714,1cyclictest0-21swapper/223:51:142
3175208991714,1cyclictest0-21swapper/223:18:472
3175208991714,1cyclictest0-21swapper/222:55:022
3175208991714,1cyclictest0-21swapper/221:00:002
3175208991714,1cyclictest0-21swapper/219:20:002
3175208991714,1cyclictest0-21swapper/200:40:012
3175208991714,1cyclictest0-21swapper/200:21:202
3175208991713,2cyclictest0-21swapper/222:25:012
3175208991713,2cyclictest0-21swapper/220:31:152
3175208991713,2cyclictest0-21swapper/220:26:132
3175208991712,1cyclictest0-21swapper/200:26:122
317520799176,3cyclictest0-21swapper/121:56:051
3175207991712,1cyclictest191rcu_preempt22:46:091
3175207991712,1cyclictest191rcu_preempt22:31:091
317520799171,10cyclictest3383906-21cut21:46:121
317520699179,4cyclictest3550120-21kthreadcore23:36:110
317520699178,8cyclictest3566782-21kthreadcore23:46:130
317520699178,7cyclictest0-21swapper/022:35:010
317520699177,5cyclictest0-21swapper/023:01:060
317520699177,4cyclictest0-21swapper/023:11:040
317520699177,4cyclictest0-21swapper/021:46:050
3175206991714,2cyclictest3851698-21mta-sts-daemon19:56:110
3175206991714,2cyclictest3600908-21sh00:10:000
3175206991714,2cyclictest3561907-21grep23:41:190
3175206991714,2cyclictest3343625-21idleruntime-cro21:20:000
3175206991714,2cyclictest0-21swapper/020:50:000
317520699170,4cyclictest3291197-21/usr/sbin/munin20:41:150
2649091170,3phc2sys0-21swapper/321:55:353
2649091170,2phc2sys0-21swapper/322:51:453
33881722160,2sleep30-21swapper/321:46:373
317520899161,9cyclictest0-21swapper/222:30:012
3175208991614,1cyclictest0-21swapper/223:41:062
3175208991614,1cyclictest0-21swapper/223:00:012
3175208991614,1cyclictest0-21swapper/220:50:022
3175208991613,1cyclictest0-21swapper/220:20:002
3175208991613,1cyclictest0-21swapper/220:20:002
3175208991612,2cyclictest0-21swapper/200:16:092
317520699169,1cyclictest0-21swapper/022:51:070
317520699167,5cyclictest0-21swapper/022:28:090
317520699166,6cyclictest0-21swapper/022:46:130
3175206991613,2cyclictest3203874-21gltestperf19:31:080
3175206991613,2cyclictest1290-21dbus-daemon20:35:010
3175206991610,5cyclictest3851702-21mta-sts-daemon22:07:090
317520699160,16cyclictest0-21swapper/020:10:290
317520699160,14cyclictest3389879-21ssh21:51:040
2649091160,2phc2sys0-21swapper/322:38:503
2649091160,1phc2sys0-21swapper/321:41:173
2649091160,1phc2sys0-21swapper/321:02:263
383433398150,7rtkit-daemon3851703-21mta-sts-daemon00:02:210
317520899151,8cyclictest0-21swapper/223:10:012
317520899151,7cyclictest0-21swapper/223:26:052
3175208991513,1cyclictest0-21swapper/221:20:032
3175208991513,1cyclictest0-21swapper/219:40:012
3175208991512,1cyclictest0-21swapper/223:25:002
3175208991512,1cyclictest0-21swapper/222:17:242
3175208991512,1cyclictest0-21swapper/222:05:002
3175208991512,1cyclictest0-21swapper/220:11:092
3175208991512,1cyclictest0-21swapper/219:11:182
3175208991511,2cyclictest0-21swapper/222:48:382
317520799154,3cyclictest0-21swapper/119:10:011
317520699159,5cyclictest3851704-21mta-sts-daemon21:30:340
317520699159,5cyclictest3571556-21aten2.4-expect23:51:070
317520699158,5cyclictest3249853-21tr20:06:140
317520699152,1cyclictest3397433-21apt-get21:56:050
317520699151,9cyclictest3381773-21awk21:45:000
3175206991512,2cyclictest3851703-21mta-sts-daemon00:32:430
3175206991512,2cyclictest3639747-21cpuspeed_turbos00:36:080
3175206991512,2cyclictest3470520-21mailstats22:41:180
3175206991512,2cyclictest3367876-21sh21:36:080
3175206991512,2cyclictest3367876-21sh21:36:080
3175206991512,2cyclictest3322717-21/usr/sbin/munin21:06:120
3175206991512,2cyclictest3310914-21gltestperf20:56:080
3175206991512,2cyclictest3309943-21systemd20:55:010
3175206991512,2cyclictest3277270-21processes20:26:160
3175206991512,2cyclictest3214633-21switchtime19:36:170
3175206991511,3cyclictest3260988-21kthreadcore20:16:120
3175206991511,3cyclictest3260988-21kthreadcore20:16:120
3175206991511,3cyclictest3185209-21tr19:16:110
2649091150,4phc2sys0-21swapper/322:17:283
2649091150,3phc2sys0-21swapper/322:46:523
317520899149,2cyclictest0-21swapper/220:41:162
3175208991412,1cyclictest0-21swapper/223:31:162
3175208991412,1cyclictest0-21swapper/222:41:182
3175208991412,1cyclictest0-21swapper/221:55:012
3175208991411,1cyclictest0-21swapper/223:12:232
3175208991411,1cyclictest0-21swapper/221:13:502
3175208991411,1cyclictest0-21swapper/221:05:162
3175208991411,1cyclictest0-21swapper/220:25:012
3175208991411,1cyclictest0-21swapper/220:25:012
3175208991411,1cyclictest0-21swapper/220:06:132
3175208991411,1cyclictest0-21swapper/219:46:062
317520699147,1cyclictest0-21swapper/023:59:440
317520699145,5cyclictest0-21swapper/022:17:090
317520699141,8cyclictest3241559-21if_err_enp1s0.820:01:100
3175206991411,2cyclictest3851704-21mta-sts-daemon19:41:110
3175206991411,2cyclictest3459066-21kthreadcore22:36:120
3175206991411,2cyclictest3266781-21if_enp1s020:21:110
3175206991411,2cyclictest3266781-21if_enp1s020:21:110
3175206991411,2cyclictest0-21swapper/019:10:010
2649091141,3phc2sys0-21swapper/300:12:333
2649091140,2phc2sys0-21swapper/322:09:263
2649091140,2phc2sys0-21swapper/320:26:153
317520899139,2cyclictest0-21swapper/222:11:142
3175208991311,1cyclictest0-21swapper/222:31:062
3175208991311,1cyclictest0-21swapper/219:41:132
3175208991311,1cyclictest0-21swapper/219:31:082
3175208991310,1cyclictest0-21swapper/220:01:072
317520699138,4cyclictest3851705-21mta-sts-daemon19:11:050
317520699138,2cyclictest3851702-21mta-sts-daemon22:11:430
3175206991310,2cyclictest3317111-21fschecks_time21:01:090
3175206991310,2cyclictest3285940-21irqrtprio20:36:120
2649091131,4phc2sys0-21swapper/322:01:053
2649091131,4phc2sys0-21swapper/319:21:063
2649091130,4phc2sys0-21swapper/323:44:163
2649091130,3phc2sys0-21swapper/323:06:513
2649091130,3phc2sys0-21swapper/300:30:073
2649091130,2phc2sys0-21swapper/323:51:573
2649091130,2phc2sys0-21swapper/323:20:403
2649091130,2phc2sys0-21swapper/321:10:233
2649091130,2phc2sys0-21swapper/320:16:093
2649091130,2phc2sys0-21swapper/320:16:093
2649091130,2phc2sys0-21swapper/300:27:523
2649091130,2phc2sys0-21swapper/300:03:553
2649091130,1phc2sys0-21swapper/320:24:113
2649091130,1phc2sys0-21swapper/320:24:113
2649091130,1phc2sys0-21swapper/300:09:403
317520899129,1cyclictest0-21swapper/221:05:012
317520899121,7cyclictest0-21swapper/219:56:052
317520899121,5cyclictest0-21swapper/219:10:012
3175208991210,1cyclictest0-21swapper/222:06:092
3175208991210,1cyclictest0-21swapper/221:25:222
3175208991210,1cyclictest0-21swapper/220:51:092
3175208991210,1cyclictest0-21swapper/219:51:092
2649091121,4phc2sys0-21swapper/321:06:053
2649091121,4phc2sys0-21swapper/320:41:053
2649091121,4phc2sys0-21swapper/319:41:063
2649091120,3phc2sys0-21swapper/321:36:043
2649091120,3phc2sys0-21swapper/321:36:043
2649091120,3phc2sys0-21swapper/300:38:083
2649091120,2phc2sys0-21swapper/323:49:203
2649091120,2phc2sys0-21swapper/323:25:393
2649091120,2phc2sys0-21swapper/321:26:143
2649091120,2phc2sys0-21swapper/320:15:013
2649091120,2phc2sys0-21swapper/320:04:113
2649091120,1phc2sys0-21swapper/323:10:563
34197472110,3sleep30-21swapper/322:10:273
2649091114,1phc2sys0-21swapper/320:50:153
2649091112,2phc2sys0-21swapper/300:20:423
2649091111,4phc2sys0-21swapper/300:16:053
2649091110,3phc2sys0-21swapper/319:16:173
2649091110,2phc2sys0-21swapper/323:30:083
2649091110,2phc2sys0-21swapper/323:00:153
2649091110,1phc2sys0-21swapper/320:33:203
2649091110,1phc2sys0-21swapper/319:34:173
2649091110,1phc2sys0-21swapper/319:12:203
2649091101,2phc2sys0-21swapper/323:56:063
2649091101,2phc2sys0-21swapper/321:20:013
2649091101,2phc2sys0-21swapper/319:46:123
2649091100,2phc2sys0-21swapper/323:17:143
2649091100,2phc2sys0-21swapper/322:41:063
2649091100,2phc2sys0-21swapper/322:31:163
2649091100,2phc2sys0-21swapper/322:29:323
2649091100,2phc2sys0-21swapper/320:46:073
2649091100,2phc2sys0-21swapper/320:40:013
2649091100,2phc2sys0-21swapper/319:56:053
2649091100,2phc2sys0-21swapper/319:29:563
2649091100,1phc2sys0-21swapper/319:51:413
264909190,2phc2sys0-21swapper/322:20:093
264909190,2phc2sys0-21swapper/321:30:233
264909190,2phc2sys0-21swapper/320:06:073
264909190,2phc2sys0-21swapper/319:06:073
264909190,1phc2sys0-21swapper/321:50:233
264909190,1phc2sys0-21swapper/321:00:013
264909180,2phc2sys0-21swapper/319:36:063
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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