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2026-04-10 - 08:31
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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
Compare latency of primary with shadow system
Characteristics of the highest latencies:
System rackeslot6.osadl.org (updated Fri Apr 10, 2026 00:44:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4057601999277,12cyclictest266-21systemd-journal20:50:010
4057602999178,10cyclictest4150894-40mandb00:00:011
4057601999078,10cyclictest4150894-40mandb00:00:010
4057602998879,6cyclictest4146078-21kworker/u8:0+flush-179:023:45:221
4057602998478,3cyclictest4077411-21kworker/u8:0+flush-179:020:25:011
4057601998475,7cyclictest4062509-21/usr/sbin/munin19:25:220
4057607998174,5cyclictest4067050-21turbostat19:40:003
4057602998074,4cyclictest4107427-21kworker/u8:2+flush-179:022:15:261
4057601998067,10cyclictest266-21systemd-journal20:15:010
4057602997466,6cyclictest4157256-21kworker/u8:0+flush-179:000:35:141
4057601997366,5cyclictest4086720-21latency_hist20:40:010
4057601997364,7cyclictest266-21systemd-journal21:10:000
4057601997359,10cyclictest266-21systemd-journal21:35:120
4057602997264,6cyclictest4141318-21latency_hist23:30:011
4057601997262,7cyclictest4149520-21kworker/u8:2+events_unbound00:20:010
4057602997062,6cyclictest4134933-21kworker/u8:1+flush-179:000:15:231
4057602996863,4cyclictest4077411-21kworker/u8:0+flush-179:020:25:211
4057602996855,10cyclictest4070984-21cat19:50:021
4057601996863,3cyclictest4062305-21kworker/u8:3+flush-179:019:35:010
4057601996861,5cyclictest4110578-21apt-get21:55:000
4057601996847,19cyclictest4141575-21apt-get23:30:100
4057601996847,19cyclictest4107648-21apt-get21:45:130
4057601996759,6cyclictest4062258-21kworker/u8:2+flush-179:020:05:200
4057601996757,7cyclictest4098066-21kworker/u8:1+flush-179:021:15:230
4057601996756,9cyclictest4147938-21apt-get23:50:130
4057601996660,4cyclictest4134933-21kworker/u8:1+flush-179:023:40:240
4057601996659,5cyclictest4098066-21kworker/u8:1+flush-179:021:20:250
4057602996558,4cyclictest4117223-21kworker/u8:3+flush-179:022:25:231
4057602996459,4cyclictest4134933-21kworker/u8:1+flush-179:023:30:151
4057602996458,4cyclictest4094670-21kworker/u8:0+flush-179:021:20:151
4057602996457,5cyclictest4075569-21latency_hist20:05:011
4057601996457,5cyclictest4054439-21kworker/u8:0+flush-179:019:15:220
4057602996347,14cyclictest4125456-21kworker/u8:1+flush-179:022:45:261
4057601996355,6cyclictest4085089-21kworker/u8:1+flush-179:020:55:250
4057602996252,8cyclictest4098086-21apt-get21:15:121
4057602996152,6cyclictest4114254-21kworker/u8:1+flush-179:022:05:151
4057601996153,6cyclictest4091503-21kworker/u8:2+flush-179:021:30:260
4057601996153,6cyclictest4091503-21kworker/u8:2+flush-179:021:30:260
4057601996152,6cyclictest4068688-21latency_hist19:45:010
4057605996057,2cyclictest0-21swapper/220:34:592
4057602996048,9cyclictest266-21systemd-journal00:04:001
4057601996053,5cyclictest4131817-21kworker/u8:2+flush-179:023:05:160
4057602995954,4cyclictest4135593-21kworker/u8:3+flush-179:023:20:001
4057602995952,5cyclictest4107427-21kworker/u8:2+events_unbound22:20:021
4057602995951,6cyclictest4104200-21latency_hist21:35:001
4057602995951,6cyclictest4104200-21latency_hist21:35:001
4057601995957,1cyclictest0-21swapper/022:52:590
4057602995847,8cyclictest266-21systemd-journal23:55:011
4057602995753,3cyclictest4089309-21kworker/u8:3+flush-179:021:00:221
4057601995750,6cyclictest4128625-21kworker/u8:0+flush-179:023:20:260
4057602995647,7cyclictest4091705-21/usr/sbin/munin20:55:241
4057601995650,4cyclictest4160764-21kworker/u8:3+flush-179:000:30:150
4057601995649,4cyclictest4117223-21kworker/u8:3+events_unbound22:40:140
4057601995647,7cyclictest4134933-21kworker/u8:1+flush-179:000:25:230
4057601995646,8cyclictest4134933-21kworker/u8:1+events_unbound00:40:010
4057602995549,4cyclictest4077411-21kworker/u8:0+flush-179:020:10:191
4057602995446,6cyclictest4062258-21kworker/u8:2+events_unbound20:05:131
4057602995445,7cyclictest266-21systemd-journal21:55:021
4057601995447,5cyclictest4110707-21kworker/u8:0+flush-179:022:00:230
4057602995348,4cyclictest4080383-21kworker/u8:3+flush-179:020:30:251
4057602995347,5cyclictest4065430-21kworker/u8:1+events_unbound19:45:031
4057602995345,6cyclictest4101281-21apt-get21:25:111
4057601995345,6cyclictest4139702-21kworker/u8:2+flush-179:023:25:230
4057602995247,4cyclictest4149520-21kworker/u8:2+events_unbound00:20:241
4057602995246,5cyclictest4142941-21kworker/u8:0+events_unbound23:35:231
4057602995245,5cyclictest4131793-21latency_hist23:00:011
4057602995243,7cyclictest4117223-21kworker/u8:3+events_unbound22:40:201
4057602995243,7cyclictest4102648-21kworker/u8:1+events_unbound21:35:211
4057601995246,4cyclictest4074643-21kworker/u8:1+events_unbound20:15:240
4057601995243,7cyclictest4134933-21kworker/u8:1+flush-179:000:05:220
4057607995149,1cyclictest0-21swapper/321:37:593
4057602995148,2cyclictest4060674-21dump-pmu-power19:20:001
4057602995145,4cyclictest4149520-21kworker/u8:2+flush-179:000:10:151
4057601995146,3cyclictest4107427-21kworker/u8:2+flush-179:022:35:170
4577091500,14ptp4l441ktimers/319:10:013
4057605995047,2cyclictest0-21swapper/220:20:582
4057602995046,3cyclictest4062305-21kworker/u8:3+flush-179:019:44:591
4057602995044,5cyclictest4054439-21kworker/u8:0+events_unbound19:20:141
4057602995043,5cyclictest4067037-21latency_hist19:40:001
4057601995043,6cyclictest4114254-21kworker/u8:1+flush-179:022:05:200
4057602994939,7cyclictest4086761-21kworker/u8:0+events_unbound20:45:151
4057601994843,3cyclictest4054439-21kworker/u8:0+flush-179:019:20:110
4057601994841,5cyclictest4149520-21kworker/u8:2+flush-179:000:20:240
4057601994740,6cyclictest4111366-21diskstats21:55:170
4057601994740,5cyclictest4102648-21kworker/u8:1+flush-179:021:40:200
4057601994739,7cyclictest4107427-21kworker/u8:2+flush-179:022:15:010
4057602994641,4cyclictest4149520-21kworker/u8:2+flush-179:000:05:181
4057602994641,4cyclictest4089309-21kworker/u8:3+events_unbound20:50:251
4057602994633,12cyclictest4074643-21kworker/u8:1+flush-179:020:15:161
4057601994640,4cyclictest4117223-21kworker/u8:3+flush-179:023:00:200
405760799450,43cyclictest4114031-21turbostat22:05:013
4057602994542,2cyclictest4107427-21kworker/u8:2+events_unbound22:00:191
4057602994540,4cyclictest4107427-21kworker/u8:2+events_unbound21:50:141
4057601994534,9cyclictest266-21systemd-journal00:04:110
4057602994439,4cyclictest4146078-21kworker/u8:0+flush-179:023:45:001
4057601994440,3cyclictest4062258-21kworker/u8:2+flush-179:020:20:190
4057601994438,4cyclictest4142941-21kworker/u8:0+events_unbound23:35:200
4057607994337,5cyclictest4163922-21turbostat00:40:013
4057602994337,5cyclictest4131817-21kworker/u8:2+events_unbound23:05:241
4057601994333,8cyclictest4107427-21kworker/u8:2+events_unbound22:45:280
405760799420,41cyclictest0-21swapper/322:34:553
4057602994237,4cyclictest4125456-21kworker/u8:1+events_unbound22:50:151
4057602994236,5cyclictest4070670-21kworker/u8:0+flush-179:019:55:201
4057602994236,4cyclictest4107427-21kworker/u8:2+flush-179:022:10:211
4057602994231,10cyclictest4117223-21kworker/u8:3+flush-179:023:00:261
4057601994238,3cyclictest4097867-21systemd-run21:15:000
4057601994238,3cyclictest4094670-21kworker/u8:0+flush-179:021:25:260
4057601994234,6cyclictest4074643-21kworker/u8:1+flush-179:020:00:210
405760199420,40cyclictest4088309-21ls20:45:010
4057607994139,1cyclictest0-21swapper/319:32:593
405760799410,39cyclictest4070539-21turbostat19:50:003
4057605994138,2cyclictest0-21swapper/222:51:592
4057605994137,2cyclictest0-21swapper/222:59:582
4057602994136,3cyclictest4086732-21munin-plugin-st20:40:011
4057602994134,5cyclictest0-21swapper/123:24:001
4057601994132,7cyclictest4083773-21apt-get20:30:130
4057607994037,2cyclictest0-21swapper/323:03:593
4057607994035,4cyclictest4130184-21turbostat22:54:593
4057605994037,2cyclictest0-21swapper/220:02:002
4057602994036,3cyclictest4065480-21systemd-run19:35:011
4057602994034,4cyclictest4108977-21latency_hist21:50:011
4057602994032,6cyclictest4085089-21kworker/u8:1+flush-179:020:40:191
4057601994035,4cyclictest4107427-21kworker/u8:2+flush-179:022:15:220
4057607993935,3cyclictest4118793-21turbostat22:20:003
4057607993933,5cyclictest4108989-21turbostat21:50:013
405760799390,1cyclictest0-21swapper/323:57:593
4057605993937,1cyclictest0-21swapper/222:34:592
4057602993934,4cyclictest4054508-21kworker/u8:1+events_unbound19:10:201
4057601993935,3cyclictest4094709-21latency_hist21:05:020
4057601993934,4cyclictest4070670-21kworker/u8:0+flush-179:019:55:260
4057607993835,2cyclictest0-21swapper/300:33:593
4057607993831,6cyclictest4142910-21turbostat23:35:003
4057607993831,5cyclictest4134960-21turbostat23:10:013
405760799380,37cyclictest4117201-21turbostat22:15:003
4057605993835,2cyclictest0-21swapper/220:35:592
4057605993834,2cyclictest0-21swapper/220:19:562
405760599380,36cyclictest0-21swapper/219:25:592
4057602993830,6cyclictest4134933-21kworker/u8:1+flush-179:000:25:251
405760299380,27cyclictest4122483-21apt-get22:30:131
4057601993833,4cyclictest4058309-21latency19:10:170
4057607993734,2cyclictest0-21swapper/322:35:593
4057607993733,3cyclictest4160739-21turbostat00:30:003
4057607993732,4cyclictest4085122-21turbostat20:39:553
405760799370,36cyclictest0-21swapper/321:57:593
4057605993734,2cyclictest0-21swapper/221:23:002
4057605993734,2cyclictest0-21swapper/220:27:592
4057605993734,2cyclictest0-21swapper/200:22:592
405760599370,35cyclictest0-21swapper/222:40:592
405760599370,2cyclictest0-21swapper/223:24:002
405760599370,1cyclictest0-21swapper/221:25:592
4057602993734,2cyclictest4107427-21kworker/u8:2+events_unbound22:35:261
4057602993731,5cyclictest4128625-21kworker/u8:0+flush-179:023:10:161
4057601993731,5cyclictest4128625-21kworker/u8:0+flush-179:023:00:000
4057601993731,4cyclictest4137426-21missed_timers23:15:200
4057601993730,6cyclictest4082477-21diskstats20:25:170
4057601993729,7cyclictest4070034-21phc2sys19:45:230
4057601993729,6cyclictest510-21rs:main0
405760199370,36cyclictest0-21swapper/022:27:580
4057607993633,2cyclictest0-21swapper/322:29:593
4057607993631,4cyclictest4157288-21turbostat00:20:003
4057607993631,4cyclictest4096254-21turbostat21:09:593
405760799360,35cyclictest0-21swapper/320:41:003
405760799360,35cyclictest0-21swapper/320:31:583
405760799360,35cyclictest0-21swapper/319:52:593
405760799360,35cyclictest0-21swapper/319:44:553
405760799360,35cyclictest0-21swapper/319:29:543
405760799360,1cyclictest0-21swapper/300:14:593
405760799360,1cyclictest0-21swapper/300:01:593
4057605993634,1cyclictest0-21swapper/221:55:002
4057601993631,4cyclictest714-21Xorg22:23:590
4057601993629,4cyclictest0-21swapper/023:47:590
4057607993533,1cyclictest0-21swapper/323:47:593
4057607993533,1cyclictest0-21swapper/321:14:593
4057607993533,1cyclictest0-21swapper/319:18:003
4057607993530,4cyclictest4073969-21turbostat20:00:003
405760799350,1cyclictest0-21swapper/320:46:593
4057605993532,2cyclictest0-21swapper/223:19:552
4057605993532,2cyclictest0-21swapper/222:24:552
4057602993531,3cyclictest714-21Xorg21:14:001
405760299351,5cyclictest4160985-21apt-get00:30:131
4057601993530,4cyclictest4134933-21kworker/u8:1+events_unbound00:15:010
4057601993529,4cyclictest4134933-21kworker/u8:1+events_unbound23:15:000
4577091340,4ptp4l441ktimers/321:25:013
4057605993431,2cyclictest0-21swapper/222:03:592
4057601993428,5cyclictest4123765-21unixbench_singl22:30:260
4057607993332,1cyclictest0-21swapper/323:40:583
4057607993330,2cyclictest0-21swapper/320:15:003
4057605993330,2cyclictest0-21swapper/220:57:592
4057602993329,3cyclictest714-21Xorg21:42:001
4057602993329,3cyclictest714-21Xorg19:29:001
4057601993229,2cyclictest0-21swapper/019:40:000
4057607993129,1cyclictest0-21swapper/322:44:553
4057607993129,1cyclictest0-21swapper/320:27:003
4057607993126,4cyclictest4159150-21turbostat00:25:003
4057605993128,2cyclictest0-21swapper/221:40:132
4057605993128,2cyclictest0-21swapper/219:38:582
4577091300,4ptp4l441ktimers/320:59:553
4057607993028,1cyclictest0-21swapper/320:06:583
4057607993027,2cyclictest0-21swapper/321:55:013
405760799300,29cyclictest0-21swapper/323:54:593
405760799300,28cyclictest0-21swapper/320:15:133
4057605993027,2cyclictest0-21swapper/222:45:162
4057605993027,2cyclictest0-21swapper/221:16:582
4057605993027,2cyclictest0-21swapper/200:35:102
405760599300,2cyclictest0-21swapper/222:14:592
405760599300,28cyclictest0-21swapper/220:10:112
405760599300,28cyclictest0-21swapper/219:15:122
4057601993025,4cyclictest4091008-21proc_pri20:50:230
4057607992927,1cyclictest0-21swapper/321:34:003
4057607992927,1cyclictest0-21swapper/321:33:593
4057607992926,2cyclictest0-21swapper/321:00:143
4057605992926,2cyclictest0-21swapper/219:56:002
4057605992926,2cyclictest0-21swapper/219:14:002
4057605992925,2cyclictest0-21swapper/221:39:552
405760599290,2cyclictest0-21swapper/222:35:132
405760599290,2cyclictest0-21swapper/222:20:012
405760599290,27cyclictest0-21swapper/223:55:122
405760599290,27cyclictest0-21swapper/222:25:142
405760599290,27cyclictest0-21swapper/219:50:022
405760599290,27cyclictest0-21swapper/219:20:132
405760599290,27cyclictest0-21swapper/200:05:112
4057602992923,5cyclictest4057614-21latency_hist19:10:011
4057607992826,1cyclictest0-21swapper/323:18:593
4057607992826,1cyclictest0-21swapper/323:11:003
4057607992826,1cyclictest0-21swapper/322:56:593
4057605992825,2cyclictest0-21swapper/223:45:132
4057605992825,2cyclictest0-21swapper/222:07:592
4057605992825,2cyclictest0-21swapper/221:55:012
4057605992825,2cyclictest0-21swapper/219:50:012
4057605992824,2cyclictest0-21swapper/223:32:582
405760599280,1cyclictest0-21swapper/223:10:132
4057602992824,3cyclictest4096283-21systemd-run21:10:001
4577091270,5ptp4l441ktimers/300:09:563
4577091270,4ptp4l441ktimers/319:25:013
405760799270,26cyclictest0-21swapper/321:25:133
405760799270,1cyclictest0-21swapper/319:10:123
4057605992724,2cyclictest0-21swapper/223:05:122
405760599270,25cyclictest0-21swapper/200:10:592
4577091260,6ptp4l61490irq/134-eno1-TxRx-020:25:003
4577091260,5ptp4l441ktimers/322:09:553
4577091260,4ptp4l441ktimers/321:45:013
4577091260,4ptp4l441ktimers/320:55:003
4577091260,4ptp4l441ktimers/320:05:003
405760799260,24cyclictest0-21swapper/323:20:593
405760799260,1cyclictest0-21swapper/323:35:133
405760599260,24cyclictest0-21swapper/223:40:002
405760599260,24cyclictest0-21swapper/223:25:592
405760599260,24cyclictest0-21swapper/221:47:592
405760599260,24cyclictest0-21swapper/221:34:592
405760599260,24cyclictest0-21swapper/221:34:592
405760599260,24cyclictest0-21swapper/221:11:592
4577091250,4ptp4l61490irq/134-eno1-TxRx-021:19:563
4577091250,4ptp4l441ktimers/322:49:563
4577091250,4ptp4l441ktimers/322:24:563
4057605992523,1cyclictest0-21swapper/220:52:002
4057605992522,2cyclictest0-21swapper/223:50:142
4057605992522,2cyclictest0-21swapper/221:09:002
4057605992522,2cyclictest0-21swapper/220:46:002
4057605992522,2cyclictest0-21swapper/219:32:592
405760599250,2cyclictest0-21swapper/219:43:002
405760599250,2cyclictest0-21swapper/200:25:142
405760599250,24cyclictest0-21swapper/200:04:592
405760799240,1cyclictest0-21swapper/323:25:143
231999240,12rtkit-daemon4056463-21df_inode19:05:160
4057605992321,1cyclictest0-21swapper/220:09:592
4057605992219,2cyclictest0-21swapper/200:34:002
4057605992017,2cyclictest0-21swapper/221:03:582
4057605991916,2cyclictest0-21swapper/223:01:592
4057605991714,2cyclictest0-21swapper/223:42:592
4057605991512,2cyclictest0-21swapper/220:40:592
4057605991310,2cyclictest0-21swapper/200:18:592
40576059930,2cyclictest0-21swapper/219:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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