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2026-05-27 - 14:04
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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 Wed May 27, 2026 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
8496322040,2sleep30-21swapper/320:39:513
38534821900,2sleep30-21swapper/300:05:013
23051221030,2sleep0230513-21sh22:20:000
17920321020,2sleep0174003-21/usr/sbin/munin21:45:020
2237682980,2sleep30-21swapper/322:14:583
2557872570,1sleep1255786-21ssh22:38:291
4170543993426,7cyclictest0-21swapper/023:40:000
4170543992715,9cyclictest3841370-21avahi-daemon21:35:020
2269652260,2sleep20-21swapper/222:19:552
41712832250,2sleep1191rcu_preempt19:10:051
4170543992519,5cyclictest434126-21ssh00:35:020
4170543992519,5cyclictest0-21swapper/022:35:020
4170544992422,1cyclictest291513-21ps23:00:011
4170544992422,1cyclictest291513-21ps23:00:011
4170544992421,2cyclictest102287-21grep20:50:021
417054499240,3cyclictest254231-21cat22:35:021
4170543992418,5cyclictest381115-21/usr/sbin/munin00:00:010
4170543992414,9cyclictest235214-21kthreadcore22:24:590
4170543992413,10cyclictest413675-21ssh00:24:470
4170543992413,10cyclictest413675-21ssh00:24:470
4170544992320,2cyclictest83552-21latency20:35:001
4170544992320,2cyclictest224393-21mailstats22:15:011
417054399233,8cyclictest191rcu_preempt00:30:010
4170543992320,2cyclictest114632-21grep21:00:010
4170543992319,2cyclictest0-21swapper/000:20:020
4170543992314,8cyclictest0-21swapper/021:55:030
4170543992314,8cyclictest0-21swapper/021:55:020
4170544992219,2cyclictest186815-21gdbus21:50:021
4170544992219,2cyclictest179363-21true21:45:011
4170544992219,2cyclictest126845-21systemd21:10:001
417054399227,9cyclictest4186293-21cpuspeed_turbos19:24:510
4170543992219,2cyclictest1290-21dbus-daemon00:10:010
4170543992219,2cyclictest0-21swapper/021:50:030
4170543992215,5cyclictest3851705-21mta-sts-daemon20:45:010
417054399220,17cyclictest103448-21/usr/sbin/munin20:54:530
4170544992118,2cyclictest58798-21apt-key20:15:011
4170544992118,2cyclictest52828-21proc_pri20:10:021
4170544992117,2cyclictest40350-21munin-plugin-st20:00:011
4170544992115,3cyclictest0-21swapper/119:55:021
417054399219,4cyclictest191rcu_preempt19:15:010
4170543992118,2cyclictest261246-21cron22:40:000
4170543992117,3cyclictest4184978-21tr19:20:010
4170543992117,3cyclictest3851702-21mta-sts-daemon20:24:580
4170543992114,5cyclictest0-21swapper/020:30:010
4170543992110,6cyclictest0-21swapper/022:29:570
4170544992018,1cyclictest433608-21apt-get00:35:011
4170544992017,2cyclictest419583-21unixbench_singl00:25:021
4170544992017,2cyclictest402985-21kthreadcore00:14:591
4170544992017,2cyclictest2840498-21systemd-journal23:05:021
4170544992017,2cyclictest231191-21kthreadcore22:20:001
4170544992017,2cyclictest1-21systemd20:25:011
4170544992016,3cyclictest3824567-21rs:main1
417054399209,7cyclictest3827634-1atopacctd22:00:040
417054399208,11cyclictest0-21swapper/023:24:500
417054399203,7cyclictest126738-21diskmemload23:12:250
4170543992017,2cyclictest306378-21needreboot23:10:010
4170543992017,2cyclictest0-21swapper/020:20:020
4170543992015,3cyclictest0-21swapper/023:45:000
4170543992014,5cyclictest3851705-21mta-sts-daemon00:04:550
4170543992014,5cyclictest314654-21switchtime23:15:040
4170543992014,5cyclictest1-21systemd20:35:010
4170543992014,5cyclictest0-21swapper/019:45:000
4170543992012,6cyclictest0-21swapper/023:30:020
417054599194,9cyclictest0-21swapper/222:04:492
4170545991917,1cyclictest0-21swapper/222:35:022
4170545991917,1cyclictest0-21swapper/200:35:022
4170545991910,4cyclictest0-21swapper/220:00:002
4170544991916,2cyclictest4170541-21cyclictest22:00:011
4170544991915,2cyclictest0-21swapper/120:30:011
4170544991912,5cyclictest2840498-21systemd-journal23:49:551
417054399198,9cyclictest0-21swapper/022:45:030
417054399198,7cyclictest0-21swapper/000:15:000
417054399193,9cyclictest3834332-21rtkit-daemon20:12:240
417054399193,5cyclictest491rcuog/221:13:410
4170543991916,2cyclictest0-21swapper/019:30:020
417054399191,5cyclictest0-21swapper/023:46:360
4170543991913,5cyclictest3851704-21mta-sts-daemon20:02:270
4170543991913,2cyclictest0-21swapper/021:24:480
4170543991912,4cyclictest191rcu_preempt22:13:330
4170543991911,5cyclictest216228-21kthreadcore22:09:590
4170543991911,4cyclictest491rcuog/221:36:030
417054399190,5cyclictest0-21swapper/022:44:500
383433398190,3rtkit-daemon3827634-1atopacctd22:27:181
2649091190,2phc2sys0-21swapper/322:54:593
2649091190,2phc2sys0-21swapper/322:54:593
4170545991816,1cyclictest0-21swapper/200:00:012
4170544991815,2cyclictest0-21swapper/121:05:011
4170544991814,3cyclictest280262-21kthreadcore22:54:571
4170544991814,3cyclictest280262-21kthreadcore22:54:571
4170544991814,2cyclictest134050irq/121-eno100:05:011
417054499180,3cyclictest390586-21ssh00:07:411
417054399187,9cyclictest0-21swapper/021:19:560
417054399185,9cyclictest134050irq/121-eno100:36:470
417054399182,10cyclictest153002-21kthreadcore21:29:580
4170543991815,2cyclictest1290-21dbus-daemon21:10:010
4170543991812,5cyclictest4176795-21munin-node23:04:510
4170543991812,5cyclictest3827634-1atopacctd19:39:070
4170543991812,5cyclictest26956-21kthreadcore19:49:590
4170543991810,6cyclictest3851703-21mta-sts-daemon22:57:150
4170543991810,6cyclictest3851703-21mta-sts-daemon22:57:140
417054399180,6cyclictest284304-21latency_hist22:55:020
417054399180,6cyclictest284304-21latency_hist22:55:020
417054399180,4cyclictest5641-21ps19:34:560
2649091180,2phc2sys0-21swapper/322:41:453
2649091180,2phc2sys0-21swapper/322:17:243
417054599177,7cyclictest41707082sleep219:10:022
417054599177,7cyclictest3300122sleep223:25:292
417054599177,7cyclictest0-21swapper/219:40:002
417054599175,5cyclictest0-21swapper/222:40:002
4170545991711,2cyclictest4049752sleep200:15:552
4170545991710,4cyclictest195588-21chrt21:56:372
417054499177,3cyclictest501rcuop/223:28:291
417054499177,3cyclictest501rcuop/222:46:361
4170544991714,2cyclictest3851705-21mta-sts-daemon22:44:501
4170544991714,2cyclictest359044-21munin-run23:45:011
4170544991714,2cyclictest216699-21pmu-power22:10:021
4170544991714,2cyclictest171961-21mailstats21:40:021
4170544991714,2cyclictest0-21swapper/123:20:021
4170544991714,2cyclictest0-21swapper/120:45:011
4170544991713,3cyclictest3827634-1atopacctd22:25:001
4170544991713,2cyclictest0-21swapper/119:45:011
417054399179,7cyclictest126738-21diskmemload23:27:570
417054399175,11cyclictest0-21swapper/021:59:510
4170543991714,2cyclictest89810-21needreboot20:40:000
4170543991711,5cyclictest3851703-21mta-sts-daemon23:51:280
4170543991711,5cyclictest102171-21latency_hist20:50:000
417054399171,14cyclictest40095-21munin-run20:00:000
2649091171,7phc2sys0-21swapper/323:06:533
417054599166,5cyclictest0-21swapper/219:30:002
417054599164,6cyclictest0-21swapper/200:04:532
4170545991613,1cyclictest0-21swapper/223:15:472
4170545991610,2cyclictest1804402sleep221:46:402
417054499167,3cyclictest501rcuop/200:15:111
417054499166,3cyclictest501rcuop/223:21:251
4170544991613,2cyclictest9203-21needreboot19:34:591
4170544991613,2cyclictest601rcuop/321:12:221
4170544991613,2cyclictest436660-21cpuspeed00:39:521
4170544991613,2cyclictest412091-21grep00:20:051
4170544991613,2cyclictest3824565-21in:imuxsock21:35:001
4170544991613,2cyclictest348792-21kthreadcore23:39:561
4170544991613,2cyclictest343607-21kthreadcore23:34:591
4170544991613,2cyclictest314039-21ssh23:15:011
4170544991613,2cyclictest209187-21cron22:05:001
4170544991613,2cyclictest0-21swapper/121:30:021
4170544991612,3cyclictest4191051-21kworker/u16:1+nfsiod21:16:521
4170544991612,3cyclictest3851705-21mta-sts-daemon23:56:161
4170544991612,3cyclictest113382-21kthreadcore21:00:001
4170544991612,2cyclictest383433398rtkit-daemon00:28:591
4170544991612,2cyclictest306508-21latency_hist23:10:021
4170544991610,5cyclictest3851705-21mta-sts-daemon21:51:131
4170544991610,5cyclictest3851705-21mta-sts-daemon21:51:131
417054399163,5cyclictest4170657-21wc19:10:000
4170543991612,3cyclictest115220-21timerwakeupswit21:00:050
2649091160,2phc2sys0-21swapper/323:59:563
2649091160,2phc2sys0-21swapper/323:16:163
2649091160,2phc2sys0-21swapper/322:48:193
2649091160,2phc2sys0-21swapper/322:37:083
2649091160,2phc2sys0-21swapper/321:28:183
417054599158,4cyclictest2189712sleep222:14:502
417054599157,5cyclictest166232sleep219:43:522
4170545991513,1cyclictest0-21swapper/221:50:042
4170545991513,1cyclictest0-21swapper/221:50:042
4170545991513,1cyclictest0-21swapper/200:30:032
4170545991512,1cyclictest0-21swapper/222:24:592
4170545991512,1cyclictest0-21swapper/220:45:012
4170545991512,1cyclictest0-21swapper/220:35:012
4170545991512,1cyclictest0-21swapper/219:20:002
4170545991511,2cyclictest0-21swapper/223:33:252
4170545991510,2cyclictest0-21swapper/223:45:102
417054499157,6cyclictest145534-21rm21:24:571
4170544991512,2cyclictest65238-21sh20:20:011
4170544991512,2cyclictest4191051-21kworker/u16:1-events_power_efficient20:05:011
4170544991512,2cyclictest4185096-21ptp4l19:20:021
4170544991512,2cyclictest3270-21processes19:30:001
4170544991512,2cyclictest108286-21systemd-run20:55:001
4170544991511,3cyclictest85891-21irqcore20:39:561
4170544991511,3cyclictest367064-21unixbench_singl23:50:061
4170544991511,3cyclictest10661-21aten_repower_po19:39:511
4170543991511,3cyclictest50161-21kthreadcore20:09:580
4170543991510,4cyclictest32988-21kthreadcore19:54:570
2649091150,1phc2sys0-21swapper/321:45:093
2649091150,1phc2sys0-21swapper/319:14:503
417054599149,2cyclictest0-21swapper/222:43:202
417054599145,5cyclictest0-21swapper/222:50:012
417054599144,6cyclictest0-21swapper/220:10:002
4170545991412,1cyclictest0-21swapper/221:35:022
4170545991411,1cyclictest0-21swapper/223:15:022
4170545991411,1cyclictest0-21swapper/223:09:082
4170545991411,1cyclictest0-21swapper/220:30:002
4170545991411,1cyclictest0-21swapper/220:20:012
4170545991410,2cyclictest0-21swapper/200:07:412
4170545991410,1cyclictest0-21swapper/221:41:512
417054499142,2cyclictest3834332-21rtkit-daemon19:23:421
2649091140,5phc2sys0-21swapper/321:36:463
2649091140,2phc2sys0-21swapper/323:25:573
2649091140,2phc2sys0-21swapper/322:08:583
2649091140,2phc2sys0-21swapper/321:21:163
2649091140,2phc2sys0-21swapper/320:44:543
2649091140,2phc2sys0-21swapper/319:29:073
2649091140,1phc2sys0-21swapper/323:00:183
417054599139,2cyclictest0-21swapper/221:38:142
417054599139,2cyclictest0-21swapper/220:14:542
417054599137,3cyclictest103176-21chrt20:51:202
417054599137,3cyclictest0-21swapper/200:40:012
417054599136,5cyclictest0-21swapper/220:40:002
417054599135,5cyclictest210572-21chrt22:06:472
417054599135,5cyclictest0-21swapper/223:39:492
4170545991311,1cyclictest0-21swapper/223:53:402
4170545991310,1cyclictest0-21swapper/223:24:512
4170545991310,1cyclictest0-21swapper/223:04:502
4170545991310,1cyclictest0-21swapper/221:11:592
4170545991310,1cyclictest0-21swapper/220:02:272
2649091131,3phc2sys0-21swapper/321:34:513
2649091130,4phc2sys0-21swapper/321:15:033
2649091130,2phc2sys0-21swapper/323:40:543
2649091130,2phc2sys0-21swapper/323:33:563
2649091130,1phc2sys0-21swapper/321:05:413
2649091130,1phc2sys0-21swapper/319:17:083
417054599129,1cyclictest0-21swapper/222:50:052
417054599129,1cyclictest0-21swapper/222:50:052
417054599129,1cyclictest0-21swapper/222:26:572
417054599129,1cyclictest0-21swapper/221:24:032
417054599129,1cyclictest0-21swapper/200:22:332
417054599129,1cyclictest0-21swapper/200:22:332
417054599127,2cyclictest3970782sleep200:10:062
417054599126,3cyclictest661222sleep220:21:432
417054599125,5cyclictest0-21swapper/221:29:512
417054599125,4cyclictest352847-21chrt23:41:562
417054599125,4cyclictest135757-21chrt21:16:462
417054599125,4cyclictest0-21swapper/219:10:002
417054599123,2cyclictest41870922sleep219:24:572
4170545991210,1cyclictest0-21swapper/220:48:262
4170545991210,1cyclictest0-21swapper/219:49:302
417054499129,2cyclictest4170881-21mailstats19:10:011
2649091122,2phc2sys0-21swapper/321:43:053
2649091122,2phc2sys0-21swapper/320:07:103
2649091121,3phc2sys0-21swapper/319:44:563
2649091120,2phc2sys0-21swapper/322:22:493
2649091120,2phc2sys0-21swapper/321:51:513
2649091120,2phc2sys0-21swapper/321:51:513
2649091120,2phc2sys0-21swapper/320:54:513
2649091120,2phc2sys0-21swapper/320:48:373
2649091120,2phc2sys0-21swapper/300:07:073
2649091120,1phc2sys0-21swapper/322:55:153
2649091120,1phc2sys0-21swapper/322:55:153
2649091120,1phc2sys0-21swapper/321:55:163
2649091120,1phc2sys0-21swapper/320:01:183
417054599118,1cyclictest0-21swapper/222:57:142
417054599118,1cyclictest0-21swapper/222:57:142
417054599118,1cyclictest0-21swapper/221:07:352
417054599117,2cyclictest0-21swapper/221:04:522
417054599117,2cyclictest0-21swapper/220:57:472
417054599117,2cyclictest0-21swapper/219:30:032
2649091113,2phc2sys0-21swapper/319:24:503
2649091111,2phc2sys0-21swapper/323:39:533
2649091111,2phc2sys0-21swapper/322:00:043
2649091111,2phc2sys0-21swapper/321:10:103
2649091110,3phc2sys0-21swapper/300:10:283
2649091110,2phc2sys0-21swapper/323:11:393
2649091110,2phc2sys0-21swapper/322:33:193
2649091110,2phc2sys0-21swapper/320:58:473
2649091110,2phc2sys0-21swapper/300:36:133
2649091110,2phc2sys0-21swapper/300:15:413
2649091110,1phc2sys0-21swapper/323:54:213
2649091110,1phc2sys0-21swapper/319:46:423
2649091110,1phc2sys0-21swapper/300:31:403
417054599102,6cyclictest289492chrt19:53:132
2649091103,1phc2sys0-21swapper/320:22:163
2649091101,3phc2sys0-21swapper/320:14:503
2649091101,2phc2sys0-21swapper/323:46:473
2649091100,3phc2sys0-21swapper/319:09:503
2649091100,2phc2sys0-21swapper/323:23:463
2649091100,2phc2sys0-21swapper/322:27:023
2649091100,2phc2sys0-21swapper/319:38:403
2649091100,2phc2sys0-21swapper/300:27:193
264909191,2phc2sys0-21swapper/320:15:033
264909190,2phc2sys0-21swapper/321:00:363
264909190,2phc2sys0-21swapper/320:30:073
264909190,2phc2sys0-21swapper/320:29:563
264909190,2phc2sys0-21swapper/319:51:083
264909190,2phc2sys0-21swapper/300:23:303
264909190,2phc2sys0-21swapper/300:23:303
264909190,1phc2sys0-21swapper/319:32:553
264909180,1phc2sys0-21swapper/319:56:043
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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