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2026-08-24 - 10:30
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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 Mon Aug 24, 2026 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
86062021120,2sleep30-21swapper/323:55:013
77261321060,2sleep20-21swapper/223:05:012
6120712840,2sleep30-21swapper/321:35:023
5421182810,1sleep0542122-21tr20:50:060
5421182810,1sleep0542122-21tr20:50:060
6581742340,2sleep20-21swapper/222:00:032
6668312250,2sleep20-21swapper/222:05:042
403440992522,2cyclictest592277-21cpuspeed_turbos21:24:570
403440992415,5cyclictest376-21systemd-journal21:13:100
40344299230,7cyclictest0-21swapper/223:19:402
7069282210,2sleep30-21swapper/322:27:143
403441992116,1cyclictest191rcu_preempt22:25:081
40344199209,5cyclictest376-21systemd-journal00:07:111
403441992017,2cyclictest24813-21gsd-housekeepin23:02:501
40344099208,7cyclictest0-21swapper/022:49:470
403440992012,2cyclictest24615-21JS14:54:060
403442991916,1cyclictest0-21swapper/222:45:002
40344199193,9cyclictest738912-1kthreadcore22:45:041
403441991915,3cyclictest376-21systemd-journal19:20:021
40344199191,3cyclictest664942-21munin-run22:05:021
403441991912,3cyclictest702089-21grep22:25:011
40344099199,6cyclictest569095-21kthreadcore21:10:020
40344099198,6cyclictest0-21swapper/022:25:040
403440991912,4cyclictest403438-21cyclictest22:14:460
403440991910,5cyclictest612075-21kthreadcore21:35:020
2213291190,6phc2sys0-21swapper/321:09:383
8116722180,1sleep20-21swapper/223:25:022
40344299180,6cyclictest0-21swapper/223:44:392
40344199182,10cyclictest376-21systemd-journal23:35:021
403441991815,2cyclictest24813-21gsd-housekeepin21:54:461
403441991815,2cyclictest0-21swapper/120:50:051
403441991815,2cyclictest0-21swapper/120:50:051
403441991814,3cyclictest479605-21kthreadcore20:05:041
403441991814,3cyclictest24616-21JS14:54:061
40344199181,3cyclictest684140-21sd-rmrf22:15:021
403441991812,4cyclictest432910-21head19:34:591
403441991812,1cyclictest484174-21kworker/1:1+events_freezable21:00:061
403441991811,3cyclictest807066-21/usr/sbin/munin23:24:561
40344099189,7cyclictest0-21swapper/000:35:030
40344099186,7cyclictest0-21swapper/000:24:410
40344099182,3cyclictest0-21swapper/021:18:420
403440991815,2cyclictest791295-21latency_hist23:15:010
403440991811,5cyclictest664341-21basename22:05:000
2213391180,1ptp4l0-21swapper/321:50:043
2213291180,3phc2sys0-21swapper/323:19:383
2213291180,2phc2sys0-21swapper/300:38:573
40344299171,7cyclictest0-21swapper/200:29:402
403442991713,2cyclictest0-21swapper/220:15:092
40344199177,1cyclictest82050irq/121-eno121:35:021
40344199172,7cyclictest414552-21kthreadcore19:20:041
403441991714,2cyclictest620555-21kthreadcore21:40:001
403441991713,3cyclictest456445-21kthreadcore19:50:031
403441991712,1cyclictest191rcu_preempt19:55:031
403441991712,1cyclictest191rcu_preempt19:55:031
403441991710,3cyclictest659388-21kthreadcore22:00:041
403441991710,3cyclictest587715-21kthreadcore21:20:041
403441991710,3cyclictest191rcu_preempt20:50:001
40344199170,7cyclictest727910-21kthreadcore22:40:011
40344099176,7cyclictest890653-21kthreadcore00:10:030
40344099176,6cyclictest0-21swapper/022:00:000
40344099175,5cyclictest943745-21irqrtprio00:40:000
403440991714,2cyclictest24610-21gmain00:02:170
40344099171,13cyclictest0-21swapper/000:25:290
2213291170,2phc2sys0-21swapper/323:11:453
2213291170,2phc2sys0-21swapper/323:03:553
2213291170,2phc2sys0-21swapper/322:48:403
2213291170,2phc2sys0-21swapper/322:37:463
403442991614,1cyclictest0-21swapper/221:55:032
403442991614,1cyclictest0-21swapper/220:30:032
403442991613,1cyclictest0-21swapper/220:55:012
403442991613,1cyclictest0-21swapper/220:55:012
40344299160,3cyclictest0-21swapper/200:24:412
40344199169,2cyclictest191rcu_preempt21:15:031
40344199169,1cyclictest82050irq/121-eno122:15:091
40344199167,4cyclictest0-21swapper/121:29:501
40344199161,6cyclictest675735-21grep22:10:031
403441991613,2cyclictest853679-21tar23:50:031
403441991613,2cyclictest518192-21kthreadcore20:35:011
403441991613,2cyclictest24472-21rtkit-daemon23:14:211
403441991613,2cyclictest24472-21rtkit-daemon22:51:251
403441991613,2cyclictest24472-21rtkit-daemon22:33:351
403441991613,2cyclictest1-21systemd20:45:011
403441991613,2cyclictest1206-21snmpd21:41:331
403441991612,3cyclictest925865-21irqrtprio00:30:011
403441991612,3cyclictest894819-21needreboot00:10:071
403441991612,3cyclictest881152-21irqrtprio00:05:011
403441991612,3cyclictest813052-21kworker/u16:0+nfsiod23:40:101
403441991612,3cyclictest531776-21kworker/u16:3+nfsiod21:49:451
403441991612,3cyclictest468469-21kthreadcore20:00:011
403441991612,1cyclictest191rcu_preempt19:14:551
403441991611,1cyclictest191rcu_preempt23:00:031
40344099167,8cyclictest0-21swapper/020:40:000
40344099167,5cyclictest844560-21kthreadcore23:45:010
40344099166,5cyclictest778-21dbus-daemon20:50:010
403440991612,3cyclictest892642-21kthreadcore00:10:040
403440991610,5cyclictest597485-21kthreadcore21:25:050
2213291161,6phc2sys0-21swapper/320:44:403
2213291160,2phc2sys0-21swapper/322:34:073
2213291160,2phc2sys0-21swapper/321:55:543
6810402150,1sleep20-21swapper/222:14:062
40344299151,9cyclictest0-21swapper/222:04:412
40344299151,8cyclictest0-21swapper/220:04:402
40344299151,7cyclictest0-21swapper/200:09:402
403442991512,1cyclictest0-21swapper/223:55:012
403442991512,1cyclictest0-21swapper/223:35:012
403442991512,1cyclictest0-21swapper/222:40:022
403442991512,1cyclictest0-21swapper/222:35:022
403442991512,1cyclictest0-21swapper/219:44:592
40344299151,10cyclictest0-21swapper/221:29:392
40344199159,1cyclictest501rcuop/220:19:381
40344199157,1cyclictest191rcu_preempt23:05:581
40344199156,4cyclictest857101-21unixbench_multi23:50:111
40344199156,4cyclictest435553-21kthreadcore19:35:031
40344199156,2cyclictest191rcu_preempt00:00:021
403441991511,3cyclictest939208-21kthreadcore00:35:051
403441991511,3cyclictest911626-21kthreadcore00:20:041
403441991511,3cyclictest878737-21kworker/u16:3+nfsiod00:16:191
403441991511,3cyclictest735172-21aten_repower_vo22:44:541
403441991511,3cyclictest563250-21kworker/u16:1+nfsiod23:26:161
403441991511,3cyclictest472071-21kthreadcore20:00:041
403441991511,3cyclictest422663-21kthreadcore19:25:041
403441991511,2cyclictest351ktimers/120:55:091
403441991510,1cyclictest524756-21kworker/1:2+events_freezable21:19:401
40344199150,8cyclictest489651-21sed20:15:031
40344099159,3cyclictest563250-21kworker/u16:1-events_unbound22:57:470
40344099158,6cyclictest0-21swapper/023:35:020
40344099157,7cyclictest0-21swapper/022:40:060
40344099157,7cyclictest0-21swapper/021:54:400
40344099157,4cyclictest447140-21irqcore19:45:010
40344099156,5cyclictest0-21swapper/000:19:480
40344099151,9cyclictest407176-21919:15:010
40344099151,8cyclictest871154-21munin-run00:00:030
40344099151,8cyclictest850314-21ssh23:49:390
40344099151,4cyclictest0-21swapper/022:34:280
40344099151,3cyclictest620561-21munin-run21:40:000
403440991512,2cyclictest713364-21latency_hist22:30:030
403440991512,2cyclictest693321-21kthreadcore22:20:030
403440991512,2cyclictest531274-21systemd-run20:45:010
403440991512,2cyclictest403438-21cyclictest19:55:020
403440991512,2cyclictest403438-21cyclictest19:55:020
403440991512,2cyclictest24472-21rtkit-daemon19:25:240
403440991512,2cyclictest1188-21runrttasks23:02:140
403440991511,3cyclictest558496-21cpu21:04:550
403440991511,3cyclictest488277-21aten_repower_po20:14:510
403440991511,3cyclictest482470-21kernelversion20:10:000
2213291151,6phc2sys0-21swapper/319:44:403
2213291150,6phc2sys0-21swapper/319:24:403
2213291150,5phc2sys0-21swapper/300:24:463
2213291150,1phc2sys0-21swapper/323:37:293
2213291150,1phc2sys0-21swapper/321:22:533
40344299148,3cyclictest0-21swapper/219:28:092
40344299141,8cyclictest0-21swapper/222:54:412
40344299141,6cyclictest0-21swapper/221:14:402
403442991412,1cyclictest0-21swapper/223:40:032
403442991412,1cyclictest0-21swapper/221:40:512
403442991412,1cyclictest0-21swapper/221:19:552
403442991412,1cyclictest0-21swapper/219:50:032
403442991411,2cyclictest0-21swapper/222:20:032
403442991411,1cyclictest0-21swapper/222:45:082
403442991411,1cyclictest0-21swapper/221:35:022
403442991411,1cyclictest0-21swapper/221:24:572
403442991411,1cyclictest0-21swapper/220:25:032
403442991411,1cyclictest0-21swapper/220:15:022
403442991411,1cyclictest0-21swapper/200:13:092
403442991411,1cyclictest0-21swapper/200:04:582
40344299140,9cyclictest0-21swapper/222:24:382
40344199147,2cyclictest191rcu_preempt21:10:021
40344199147,1cyclictest191rcu_preempt20:25:041
403441991411,2cyclictest932-1atopacctd23:18:151
403441991410,3cyclictest929606-21kthreadcore00:30:041
403441991410,3cyclictest524353-21irqrtprio20:40:001
403441991410,3cyclictest503410-21irqrtprio20:25:001
403441991410,3cyclictest403767-21phc2sys-jitter19:10:031
40344099147,5cyclictest376-21systemd-journal23:15:100
40344099145,4cyclictest814278-21sshd-session23:28:100
40344099145,3cyclictest778-21dbus-daemon20:00:030
40344099145,2cyclictest0-21swapper/022:38:410
40344099141,8cyclictest432150-21apt-get19:34:400
403440991411,2cyclictest811305-21kthreadcore23:25:010
403440991411,2cyclictest672496-21aten2.4-expect22:09:460
403440991411,2cyclictest636950-21cpuspeed_turbos21:49:560
403440991411,2cyclictest563250-21kworker/u16:1+nfsiod21:41:450
403440991411,2cyclictest508375-21sendmail_mailqu20:25:070
403440991411,2cyclictest504782-21kthreadcore20:25:020
403440991411,2cyclictest439374-21cpuspeed_turbos19:39:570
403440991411,2cyclictest419692-21systemd-run19:25:020
403440991411,2cyclictest24472-21rtkit-daemon19:46:070
403440991410,3cyclictest494591-21unixbench-2d20:15:110
40344099140,9cyclictest555491-21cut21:00:030
40344099140,8cyclictest517741-21grep20:35:010
40344099140,3cyclictest750567-21users22:50:080
2213291145,2phc2sys0-21swapper/323:34:303
2213291140,2phc2sys0-21swapper/323:09:373
2213291140,2phc2sys0-21swapper/322:23:553
2213291140,2phc2sys0-21swapper/320:59:003
2213291140,1phc2sys0-21swapper/323:22:153
40344299132,7cyclictest0-21swapper/219:14:392
403442991311,1cyclictest0-21swapper/223:15:032
403442991311,1cyclictest0-21swapper/221:45:042
403442991311,1cyclictest0-21swapper/221:37:102
403442991311,1cyclictest0-21swapper/220:35:022
403442991311,1cyclictest0-21swapper/219:24:592
403442991311,1cyclictest0-21swapper/219:20:022
403442991310,2cyclictest0-21swapper/200:20:032
403442991310,1cyclictest0-21swapper/223:59:592
403442991310,1cyclictest0-21swapper/223:50:002
403442991310,1cyclictest0-21swapper/223:30:032
403442991310,1cyclictest0-21swapper/223:10:042
403442991310,1cyclictest0-21swapper/222:55:102
403442991310,1cyclictest0-21swapper/222:25:062
403442991310,1cyclictest0-21swapper/221:04:582
403442991310,1cyclictest0-21swapper/219:40:022
40344199137,2cyclictest191rcu_preempt19:40:041
40344099139,2cyclictest567324-21diskmemload23:10:030
40344099131,7cyclictest474160-21apt-get20:04:390
40344099131,6cyclictest412549-21cat19:20:010
40344099130,8cyclictest828527-21grep23:35:050
2213291135,2phc2sys0-21swapper/321:38:363
2213291131,2phc2sys0-21swapper/300:26:103
2213291130,4phc2sys0-21swapper/322:17:463
40344299129,1cyclictest0-21swapper/220:41:012
40344299129,1cyclictest0-21swapper/220:07:132
40344299129,1cyclictest0-21swapper/220:00:022
40344299127,3cyclictest0-21swapper/221:10:022
40344299121,6cyclictest0-21swapper/219:54:412
40344299121,6cyclictest0-21swapper/219:54:412
403442991210,1cyclictest0-21swapper/220:55:042
403442991210,1cyclictest0-21swapper/220:40:012
403442991210,1cyclictest0-21swapper/219:35:022
40344299120,7cyclictest0-21swapper/220:49:412
40344299120,4cyclictest0-21swapper/200:35:022
40344099129,2cyclictest0-21swapper/019:10:020
2213291124,2phc2sys0-21swapper/319:34:593
2213291123,2phc2sys0-21swapper/321:15:593
2213291121,5phc2sys0-21swapper/322:59:403
2213291121,5phc2sys0-21swapper/322:14:393
2213291121,4phc2sys0-21swapper/320:19:393
2213291121,2phc2sys0-21swapper/319:15:033
2213291120,3phc2sys0-21swapper/300:05:413
2213291120,2phc2sys0-21swapper/323:41:113
8752222110,3sleep30-21swapper/300:00:193
40344299119,1cyclictest0-21swapper/219:10:022
40344299119,1cyclictest0-21swapper/200:35:052
2213291110,5phc2sys0-21swapper/320:39:393
2213291110,3phc2sys0-21swapper/323:50:053
2213291110,2phc2sys0-21swapper/323:25:243
2213291110,2phc2sys0-21swapper/319:09:383
2213291110,2phc2sys0-21swapper/300:14:563
2213291110,1phc2sys0-21swapper/319:25:383
9051142100,3sleep30-21swapper/300:16:433
5084502100,2sleep30-21swapper/320:25:093
2213291103,1phc2sys0-21swapper/300:33:313
2213291102,2phc2sys0-21swapper/321:29:423
2213291102,1phc2sys0-21swapper/323:57:433
2213291101,2phc2sys0-21swapper/321:44:543
2213291101,2phc2sys0-21swapper/321:14:393
2213291101,2phc2sys0-21swapper/321:04:453
2213291101,2phc2sys0-21swapper/319:49:583
2213291100,2phc2sys0-21swapper/322:53:173
2213291100,2phc2sys0-21swapper/322:41:023
2213291100,2phc2sys0-21swapper/322:07:593
2213291100,2phc2sys0-21swapper/322:05:033
2213291100,2phc2sys0-21swapper/321:51:203
2213291100,2phc2sys0-21swapper/320:50:063
2213291100,2phc2sys0-21swapper/320:50:063
2213291100,2phc2sys0-21swapper/320:46:483
2213291100,2phc2sys0-21swapper/320:25:013
2213291100,1phc2sys0-21swapper/320:07:183
2213291100,1phc2sys0-21swapper/319:53:193
2213291100,1phc2sys0-21swapper/319:53:193
2213291100,1phc2sys0-21swapper/319:17:453
221329191,2phc2sys0-21swapper/320:30:063
221329190,2phc2sys0-21swapper/320:00:123
221329190,2phc2sys0-21swapper/319:55:073
221329190,2phc2sys0-21swapper/319:39:403
221329180,2phc2sys0-21swapper/320:10:063
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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