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2026-04-17 - 15:01
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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 highest latencies:
System rackeslot2.osadl.org (updated Fri Apr 17, 2026 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
33981852760,2sleep30-21swapper/300:10:553
33122392680,1sleep13312238-21ssh23:13:381
2971713992415,3cyclictest36-21ksoftirqd/119:30:021
2971713992415,3cyclictest36-21ksoftirqd/119:30:021
2971710992421,2cyclictest3170398-21/usr/sbin/munin21:40:000
2971710992415,5cyclictest3426266-21cstates00:30:500
2971716992320,1cyclictest0-21swapper/223:05:002
297171699230,8cyclictest0-21swapper/223:35:482
2971713992317,2cyclictest491rcuog/221:35:001
297171399230,9cyclictest3155618-21munin-run21:30:011
2971710992314,5cyclictest3408464-21runrttasks00:15:590
2971710992312,6cyclictest0-21swapper/021:25:010
2971713992216,2cyclictest191rcu_preempt20:50:001
297171399220,9cyclictest3350200-21munin-run23:40:011
2971710992219,2cyclictest1290-21dbus-daemon22:15:010
2971710992214,7cyclictest0-21swapper/023:45:010
30248632210,1sleep00-21swapper/019:50:480
30248632210,1sleep00-21swapper/019:50:480
297171399214,8cyclictest3215318-21munin-run22:10:011
2971713992118,2cyclictest3194468-21grep21:55:531
2971713992118,2cyclictest2992876-21cron19:25:001
2971713992116,1cyclictest383433398rtkit-daemon23:57:261
2971713992116,1cyclictest191rcu_preempt22:43:431
2971713992113,4cyclictest0-21swapper/122:20:001
2971713992113,3cyclictest36-21ksoftirqd/123:45:001
2971713992113,3cyclictest191rcu_preempt20:10:021
2971713992111,4cyclictest3100605-21apt-get20:50:481
297171399210,10cyclictest3418389-21ssh00:25:481
2971710992118,2cyclictest3068598-21systemd20:25:010
2971710992118,2cyclictest3024396-21grep19:50:000
2971710992112,5cyclictest3365902-21/usr/sbin/munin23:50:540
2971710992111,5cyclictest3305239-21latency_hist23:10:010
297171399209,2cyclictest191rcu_preempt19:35:471
297171399208,7cyclictest36-21ksoftirqd/119:15:011
297171399203,11cyclictest3382490-21cat00:00:521
297171399201,9cyclictest0-21swapper/119:40:471
2971713992017,2cyclictest1290-21dbus-daemon23:55:011
2971713992014,2cyclictest191rcu_preempt00:40:001
2971713992013,3cyclictest3231776-21irqcore22:20:541
2971713992012,3cyclictest36-21ksoftirqd/123:50:001
2971713992012,3cyclictest36-21ksoftirqd/123:00:001
2971713992012,3cyclictest36-21ksoftirqd/121:20:011
2971713992012,3cyclictest36-21ksoftirqd/120:00:011
2971713992012,1cyclictest191rcu_preempt20:10:451
297171399200,8cyclictest3113089-21munin-run21:00:011
297171099209,7cyclictest0-21swapper/021:10:470
2971710992017,2cyclictest3207737-21sh22:05:000
2971710992013,4cyclictest2971708-21cyclictest21:40:510
297171699191,9cyclictest0-21swapper/219:20:012
2971716991916,1cyclictest0-21swapper/222:00:002
297171699191,10cyclictest0-21swapper/222:40:012
297171699190,3cyclictest34252912sleep200:29:592
297171399199,6cyclictest3125471-21diskmemload22:54:131
297171399198,5cyclictest3428607-21cut00:30:561
297171399197,7cyclictest36-21ksoftirqd/123:10:001
2971713991916,2cyclictest2971708-21cyclictest19:30:531
2971713991915,3cyclictest3179011-21fschecks_time21:45:501
2971713991913,5cyclictest3087215-21idleruntime-cro20:40:001
2971713991912,3cyclictest3243823-21/usr/sbin/munin22:26:031
2971713991911,1cyclictest191rcu_preempt19:15:461
297171399191,11cyclictest1290-21dbus-daemon00:10:011
297171399190,8cyclictest3062055-21munin-run20:20:011
297171399190,7cyclictest3290914-21ssh23:00:471
297171399190,7cyclictest0-21swapper/120:20:471
2971710991916,2cyclictest3851704-21mta-sts-daemon20:45:000
2971710991912,6cyclictest3434721-21tr00:35:530
2971710991911,7cyclictest3827634-1atopacctd21:35:000
2971710991911,5cyclictest3827634-1atopacctd20:20:000
2971710991910,5cyclictest3329619-21kthreadcore23:25:540
297171099190,14cyclictest3119595-21/usr/sbin/munin21:05:580
297171699181,9cyclictest0-21swapper/222:30:012
2971716991816,1cyclictest0-21swapper/223:50:012
2971716991815,1cyclictest0-21swapper/220:25:002
297171399189,4cyclictest3124953-21cat21:06:021
297171399189,4cyclictest3113979-21fschecks_time21:00:481
297171399188,5cyclictest351ktimers/123:18:141
297171399188,4cyclictest3141808-21hddtemp_smartct21:20:531
297171399186,7cyclictest3203749-21kthreadcore22:00:551
297171399185,2cyclictest191rcu_preempt22:30:481
297171399184,9cyclictest3400868-21missed_timers00:10:581
2971713991815,2cyclictest3132961-21cron21:15:011
2971713991814,1cyclictest191rcu_preempt22:10:591
2971713991812,2cyclictest191rcu_preempt22:45:531
2971713991810,3cyclictest36-21ksoftirqd/120:35:001
2971713991810,1cyclictest191rcu_preempt21:43:391
297171399180,6cyclictest3088918-21grep20:40:531
297171399180,2cyclictest3320745-21apt-get23:20:471
297171099189,5cyclictest3186025-21head21:50:490
297171099188,8cyclictest0-21swapper/022:45:470
297171099185,10cyclictest1290-21dbus-daemon00:15:010
297171099181,7cyclictest3418380-21apt-get00:25:480
2971710991815,2cyclictest3378666-21mailstats23:56:000
2971710991815,2cyclictest3320168-21munin-run23:20:000
2971710991815,2cyclictest3194070-21sed21:55:510
2971710991815,2cyclictest2999393-21apt-config19:30:010
2971710991815,2cyclictest2999393-21apt-config19:30:010
2971710991815,2cyclictest0-21swapper/020:55:010
2649091181,7phc2sys0-21swapper/319:05:473
2649091181,2phc2sys0-21swapper/321:23:383
2649091181,2phc2sys0-21swapper/320:55:553
32150352170,2sleep20-21swapper/222:09:292
2971716991715,1cyclictest0-21swapper/223:00:022
2971716991715,1cyclictest0-21swapper/200:15:012
2971716991714,1cyclictest0-21swapper/222:46:012
2971716991714,1cyclictest0-21swapper/222:30:542
2971716991714,1cyclictest0-21swapper/220:00:592
297171399179,1cyclictest3380887-21kworker/u16:0+rpciod00:20:481
297171399179,1cyclictest191rcu_preempt19:50:001
297171399176,5cyclictest3042184-21cat20:00:561
297171399173,9cyclictest3185832-21acpi21:50:471
297171399172,9cyclictest3258154-21cat22:35:561
2971713991715,1cyclictest0-21swapper/119:10:021
2971713991711,2cyclictest191rcu_preempt23:30:521
2971713991710,2cyclictest191rcu_preempt20:25:471
297171099179,2cyclictest0-21swapper/021:48:330
297171099179,2cyclictest0-21swapper/000:00:500
297171099177,6cyclictest3388611-21aten_repower_po00:05:480
297171099177,5cyclictest0-21swapper/022:25:010
2971710991714,2cyclictest3113004-21latency_hist21:00:000
2971710991714,2cyclictest3087309-21apt-key20:40:000
2971710991714,2cyclictest0-21swapper/023:40:000
2971710991714,2cyclictest0-21swapper/020:50:010
2649091177,2phc2sys0-21swapper/321:15:533
2649091171,2phc2sys0-21swapper/322:26:103
2649091170,2phc2sys0-21swapper/323:47:033
2649091170,2phc2sys0-21swapper/322:31:293
383433398160,12rtkit-daemon171ktimers/020:07:350
297171699169,4cyclictest0-21swapper/200:20:482
297171699162,7cyclictest0-21swapper/223:10:012
297171699162,10cyclictest0-21swapper/220:55:472
2971716991614,1cyclictest0-21swapper/219:15:022
2971716991613,1cyclictest0-21swapper/223:40:542
2971716991613,1cyclictest0-21swapper/223:15:002
2971716991613,1cyclictest0-21swapper/221:40:532
2971716991613,1cyclictest0-21swapper/221:30:522
2971716991613,1cyclictest0-21swapper/221:25:002
2971716991613,1cyclictest0-21swapper/220:50:592
2971716991613,1cyclictest0-21swapper/220:35:552
297171699161,11cyclictest30247302sleep219:50:472
297171699161,11cyclictest30247302sleep219:50:472
297171399168,3cyclictest36-21ksoftirqd/121:35:561
2971713991613,2cyclictest3330841-21kthreadcore23:25:551
297171099169,6cyclictest3851703-21mta-sts-daemon22:27:190
297171099168,7cyclictest0-21swapper/022:35:480
297171099168,7cyclictest0-21swapper/021:25:580
297171099162,4cyclictest491rcuog/222:32:150
2971710991613,2cyclictest3295899-21cut23:00:570
2971710991613,2cyclictest3215379-21latency_hist22:10:010
2971710991613,2cyclictest3011938-21sendmail19:40:000
2971710991613,2cyclictest2981461-21gltestperf19:15:500
2971710991613,2cyclictest2971708-21cyclictest20:05:010
2971710991613,2cyclictest0-21swapper/000:25:020
2971710991610,5cyclictest3363330-21wc23:45:580
2649091160,4phc2sys0-21swapper/322:10:523
2649091160,2phc2sys0-21swapper/322:56:373
2649091160,2phc2sys0-21swapper/322:40:433
297171699154,3cyclictest0-21swapper/221:05:492
297171699151,7cyclictest0-21swapper/219:50:012
297171699151,6cyclictest0-21swapper/221:50:012
2971716991513,1cyclictest0-21swapper/222:45:002
2971716991512,1cyclictest0-21swapper/223:59:102
2971716991512,1cyclictest0-21swapper/223:25:542
2971716991512,1cyclictest0-21swapper/223:15:582
2971716991512,1cyclictest0-21swapper/221:55:002
2971716991512,1cyclictest0-21swapper/221:28:592
2971716991512,1cyclictest0-21swapper/220:15:522
2971716991512,1cyclictest0-21swapper/200:30:592
2971716991512,1cyclictest0-21swapper/200:10:012
2971716991511,2cyclictest0-21swapper/222:50:542
2971716991511,2cyclictest0-21swapper/219:58:302
297171399157,3cyclictest36-21ksoftirqd/119:50:531
297171399157,3cyclictest36-21ksoftirqd/119:50:531
297171399150,10cyclictest3403432-21ssh00:15:481
297171099151,9cyclictest3069550-21idleruntime20:25:510
297171099151,7cyclictest3125471-21diskmemload23:22:590
2971710991512,2cyclictest3824567-21rs:main0
2971710991512,2cyclictest3340657-21open_inodes23:30:550
2971710991512,2cyclictest3311288-21timerwakeupswit23:11:020
2971710991512,2cyclictest3290438-21latency_hist23:00:010
2971710991512,2cyclictest3114096-21gltestperf21:00:480
2971710991512,2cyclictest2971708-21cyclictest22:40:540
2971710991512,2cyclictest0-21swapper/022:16:000
2971710991511,3cyclictest2988019-21irqcore19:20:530
2649091150,3phc2sys0-21swapper/323:44:523
2649091150,2phc2sys0-21swapper/323:08:393
2971716991412,1cyclictest0-21swapper/220:25:522
2971716991412,1cyclictest0-21swapper/200:35:502
2971716991411,1cyclictest0-21swapper/223:30:522
2971716991411,1cyclictest0-21swapper/222:20:002
2971716991411,1cyclictest0-21swapper/222:13:522
2971716991411,1cyclictest0-21swapper/222:03:232
2971716991411,1cyclictest0-21swapper/221:15:212
2971716991411,1cyclictest0-21swapper/221:15:022
2971716991411,1cyclictest0-21swapper/220:45:472
2971716991411,1cyclictest0-21swapper/220:30:062
2971716991411,1cyclictest0-21swapper/200:19:112
2971716991411,1cyclictest0-21swapper/200:00:562
2971716991410,2cyclictest0-21swapper/222:20:462
297171099143,4cyclictest3279438-21kthreadcore22:50:560
297171099141,8cyclictest3139674-21chrt21:17:330
2971710991411,2cyclictest3075061-21aten_repower_cu20:30:480
2971710991411,2cyclictest2978715-21cpuspeed19:15:020
2971710991411,2cyclictest2971891-21sh19:10:020
2971710991410,3cyclictest3015690-21kthreadcore19:40:550
2971710991410,3cyclictest3001216-21kthreadcore19:30:530
2649091141,3phc2sys0-21swapper/320:10:453
2649091140,2phc2sys0-21swapper/323:26:523
2649091140,2phc2sys0-21swapper/322:48:003
2649091140,2phc2sys0-21swapper/300:20:513
2649091140,2phc2sys0-21swapper/300:05:053
297171699131,6cyclictest0-21swapper/219:40:012
2971716991311,1cyclictest0-21swapper/223:25:002
2971716991311,1cyclictest0-21swapper/221:35:522
2971716991311,1cyclictest0-21swapper/220:45:012
2971716991311,1cyclictest0-21swapper/220:10:012
2971716991310,1cyclictest0-21swapper/221:00:522
2971716991310,1cyclictest0-21swapper/219:30:542
2971716991310,1cyclictest0-21swapper/219:20:582
2971710991310,2cyclictest3051092-21kthreadcore20:10:510
2649091130,3phc2sys0-21swapper/323:00:473
2649091130,2phc2sys0-21swapper/323:14:553
2649091130,2phc2sys0-21swapper/322:03:143
2649091130,2phc2sys0-21swapper/321:49:403
2649091130,2phc2sys0-21swapper/321:43:143
2649091130,2phc2sys0-21swapper/321:34:483
2649091130,2phc2sys0-21swapper/321:12:553
2649091130,2phc2sys0-21swapper/320:20:373
2649091130,2phc2sys0-21swapper/300:37:003
2649091130,2phc2sys0-21swapper/300:31:413
297171699129,1cyclictest0-21swapper/219:40:512
2971716991210,1cyclictest0-21swapper/223:50:532
2971716991210,1cyclictest0-21swapper/220:10:532
2971716991210,1cyclictest0-21swapper/219:25:522
2971716991210,1cyclictest0-21swapper/219:25:522
2649091121,2phc2sys0-21swapper/319:45:563
2649091120,3phc2sys0-21swapper/320:30:483
2649091120,2phc2sys0-21swapper/323:53:193
2649091120,2phc2sys0-21swapper/323:15:423
2649091120,2phc2sys0-21swapper/320:45:103
2649091120,2phc2sys0-21swapper/320:15:573
2649091120,2phc2sys0-21swapper/319:38:023
2649091120,2phc2sys0-21swapper/319:22:383
2649091120,2phc2sys0-21swapper/300:15:453
2649091120,1phc2sys0-21swapper/322:08:473
2649091120,1phc2sys0-21swapper/319:54:133
2649091120,1phc2sys0-21swapper/319:54:133
2649091110,5phc2sys0-21swapper/322:50:483
2649091110,2phc2sys0-21swapper/321:08:473
2649091110,2phc2sys0-21swapper/319:13:493
2649091110,1phc2sys0-21swapper/320:35:453
2649091110,1phc2sys0-21swapper/320:27:483
2649091110,1phc2sys0-21swapper/319:40:493
2649091110,1phc2sys0-21swapper/319:30:043
297171699100,7cyclictest0-21swapper/219:10:022
2649091102,2phc2sys0-21swapper/323:22:593
2649091100,2phc2sys0-21swapper/323:36:023
2649091100,2phc2sys0-21swapper/323:30:453
2649091100,2phc2sys0-21swapper/322:36:503
2649091100,2phc2sys0-21swapper/322:16:573
2649091100,2phc2sys0-21swapper/321:57:453
2649091100,2phc2sys0-21swapper/321:38:173
2649091100,2phc2sys0-21swapper/321:28:113
2649091100,2phc2sys0-21swapper/320:51:003
2649091100,2phc2sys0-21swapper/319:16:593
2649091100,2phc2sys0-21swapper/300:25:203
2649091100,1phc2sys0-21swapper/321:52:443
264909192,2phc2sys0-21swapper/319:25:503
264909192,2phc2sys0-21swapper/319:25:503
264909191,2phc2sys0-21swapper/321:00:503
264909190,2phc2sys0-21swapper/323:55:143
264909190,2phc2sys0-21swapper/322:20:503
264909190,2phc2sys0-21swapper/320:00:473
264909190,2phc2sys0-21swapper/300:00:313
264909180,2phc2sys0-21swapper/320:40:543
264909180,2phc2sys0-21swapper/320:05:243
264909180,2phc2sys0-21swapper/319:55:023
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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