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2026-09-15 - 06:10
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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 376 highest latencies:
System rackeslot6.osadl.org (updated Tue Sep 15, 2026 00:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
348965299149136,10cyclictest1213033-21systemd-journal00:00:000
3489652991391,134cyclictest1-21systemd00:04:000
348965299135129,4cyclictest3555926-21kworker/u8:1+events_unbound22:35:000
348965399133122,8cyclictest3585178-21latency_hist00:05:011
348965399131117,10cyclictest1213033-21systemd-journal21:05:001
348965399130120,7cyclictest1213033-21systemd-journal20:55:001
348965299126117,7cyclictest3596716-21gpgv00:40:010
348965299125115,7cyclictest3594984-21latency_hist00:35:010
348965299121117,2cyclictest1-21systemd23:00:000
348965299121114,5cyclictest3578992-21kworker/u8:3+flush-179:000:15:160
348965399118104,9cyclictest3562437-21gpgv22:55:001
348965299118110,5cyclictest3508949-21kworker/u8:0+flush-179:020:45:190
348965299117108,5cyclictest3515106-21kworker/u8:4+flush-179:020:35:210
348965299117105,9cyclictest3528595-21apt-get21:08:560
348965299115108,5cyclictest3571465-21kworker/u8:1+flush-179:023:40:210
348965299115106,6cyclictest3495436-21kworker/u8:2+events_unbound19:35:000
348965299113107,5cyclictest3581901-21kworker/u8:1+flush-179:000:10:010
348965399112100,9cyclictest2335894-21kworker/u8:0+flush-179:019:15:001
348965299112103,7cyclictest3559179-21kworker/u8:0+events_unbound23:30:010
348965299112101,9cyclictest3591671-21gpgv00:25:010
34896539911086,21cyclictest3551188-21latency_hist22:20:011
348965399110100,7cyclictest3543249-21kworker/u8:2+events_unbound22:10:251
348965299109102,5cyclictest3578992-21kworker/u8:3+flush-179:000:25:010
348965299108101,5cyclictest3557523-21kworker/u8:2+events_unbound22:40:230
34896529910799,7cyclictest3543249-21kworker/u8:2+flush-179:022:00:000
34896539910693,9cyclictest3492762-21kworker/u8:1+flush-179:020:20:001
34896529910699,5cyclictest3559179-21kworker/u8:0+flush-179:022:45:210
348965299106100,4cyclictest3559179-21kworker/u8:0+flush-179:023:35:220
34896529910598,5cyclictest3508949-21kworker/u8:0+flush-179:020:25:210
34896529910586,5cyclictest3520421-21kworker/u8:2+events_unbound21:00:010
34896539910492,8cyclictest3508949-21kworker/u8:0+flush-179:020:45:161
34896539910489,11cyclictest1213033-21systemd-journal23:20:001
34896529910498,4cyclictest3543249-21kworker/u8:2+flush-179:022:25:230
34896529910497,5cyclictest3580340-21latency_hist23:50:010
34896529910494,7cyclictest3555926-21kworker/u8:1+flush-179:022:35:210
34896539910397,4cyclictest3593654-21apt-get00:30:131
34896539910394,6cyclictest3589925-21kworker/u8:0+events_unbound00:25:191
34896529910399,3cyclictest3492762-21kworker/u8:1+flush-179:020:05:240
34896529910397,5cyclictest3562806-21kworker/u8:2+flush-179:023:00:240
34896529910396,5cyclictest3536830-21kworker/u8:0+flush-179:022:00:240
34896529910390,4cyclictest2335894-21kworker/u8:0+flush-179:019:25:210
34896529910297,3cyclictest3559179-21kworker/u8:0+events_unbound23:10:000
34896529910291,5cyclictest3536830-21kworker/u8:0+events_unbound21:45:220
34896529910191,7cyclictest3532046-21kworker/u8:3+flush-179:021:30:180
34896529910094,4cyclictest3536830-21kworker/u8:0+flush-179:022:05:240
34896529910094,4cyclictest3536830-21kworker/u8:0+flush-179:022:05:240
34896529910091,6cyclictest3496025-21kworker/u8:3+events_unbound19:40:260
3489652999992,5cyclictest3511866-21kworker/u8:3+events_unbound20:20:220
3489652999991,5cyclictest2335894-21kworker/u8:0+flush-179:019:20:210
3489652999991,5cyclictest2335894-21kworker/u8:0+flush-179:019:20:210
3489652999990,6cyclictest3495436-21kworker/u8:2+flush-179:019:50:260
3489653999886,8cyclictest3492762-21kworker/u8:1+flush-179:020:05:171
3489653999884,11cyclictest1213033-21systemd-journal23:40:001
3489653999884,10cyclictest3528574-21kworker/u8:1+flush-179:021:10:241
3489653999784,10cyclictest3564432-21apt-get23:00:121
3489652999792,4cyclictest3528574-21kworker/u8:1+flush-179:021:10:250
3489652999790,5cyclictest3578992-21kworker/u8:3+events_unbound23:50:240
3489652999785,4cyclictest3559179-21kworker/u8:0+events_unbound23:35:010
3489653999683,10cyclictest3556199-21apt-get22:35:121
3489652999687,7cyclictest3508949-21kworker/u8:0+flush-179:020:50:220
3489652999687,4cyclictest3492762-21kworker/u8:1+events_unbound19:35:230
3489653999587,5cyclictest3578755-21latency_hist23:45:011
3489653999179,9cyclictest3559189-21kworker/u8:3+flush-179:023:05:031
3489652999184,5cyclictest3489614-21kworker/u8:2+flush-179:019:10:240
3489652999181,8cyclictest3560962-21/usr/sbin/munin22:50:230
3489653999076,11cyclictest3583556-40mandb00:00:021
3489653998984,3cyclictest3492762-21kworker/u8:1+flush-179:020:10:261
3489652998982,6cyclictest3571465-21kworker/u8:1+flush-179:023:25:000
3489652998981,7cyclictest3492762-21kworker/u8:1+events_unbound20:20:000
3489652998980,6cyclictest3533713-21kworker/u8:2+flush-179:021:25:210
3489652998979,6cyclictest3492762-21kworker/u8:1+events_unbound19:49:590
3489653998847,27cyclictest3547991-21latency_hist22:10:011
3489653998847,27cyclictest3547991-21latency_hist22:10:011
3489652998781,4cyclictest3543249-21kworker/u8:2+flush-179:022:10:210
3489652998781,4cyclictest3492762-21kworker/u8:1+events_unbound20:10:160
3489652998781,4cyclictest3489614-21kworker/u8:2+events_unbound19:15:250
3489652998780,5cyclictest3536830-21kworker/u8:0+flush-179:021:35:250
3489653998678,5cyclictest3511866-21kworker/u8:3+flush-179:020:40:271
3489652998677,6cyclictest3528574-21kworker/u8:1+events_unbound21:40:140
3489653998576,7cyclictest3578992-21kworker/u8:3+events_unbound00:20:011
3489652998576,6cyclictest3528574-21kworker/u8:1+flush-179:021:20:200
3489652998479,3cyclictest3559179-21kworker/u8:0+flush-179:023:15:210
3489652998478,4cyclictest3492762-21kworker/u8:1+events_unbound20:00:200
3489652998476,7cyclictest3562806-21kworker/u8:2+flush-179:023:10:240
3489653998376,5cyclictest3528574-21kworker/u8:1+flush-179:021:15:361
3489653998371,9cyclictest3535264-21latency_hist21:30:011
3489652998377,4cyclictest3531547-21kworker/u8:0+events_unbound21:15:250
3489653998244,26cyclictest3528574-21kworker/u8:1+flush-179:021:40:011
3489652998277,4cyclictest3495436-21kworker/u8:2+events_unbound19:55:250
3489653998172,6cyclictest2335894-21kworker/u8:0+flush-179:019:20:261
3489653998172,6cyclictest2335894-21kworker/u8:0+flush-179:019:20:261
3489653998171,7cyclictest3499413-21/usr/sbin/munin19:40:181
3489653998069,8cyclictest3492762-21kworker/u8:1+events_unbound19:35:191
3489652998074,4cyclictest3520421-21kworker/u8:2+events_unbound21:00:260
3489653997972,4cyclictest3511866-21kworker/u8:3+events_unbound20:30:171
3489653997970,6cyclictest3528574-21kworker/u8:1+flush-179:021:40:171
3489653997869,7cyclictest3518172-21kworker/u8:1+flush-179:020:35:271
3489653997768,7cyclictest3562806-21kworker/u8:2+events_unbound23:10:231
3489653997666,7cyclictest3596571-21latency_hist00:40:011
3489652997668,6cyclictest3543249-21kworker/u8:2+flush-179:022:15:190
3489653997565,8cyclictest3583576-21kworker/u8:2+events_unbound00:05:151
3489653997564,7cyclictest3492762-21kworker/u8:1+flush-179:019:20:011
3489652997564,8cyclictest3588349-21latency_hist00:15:010
3489653997463,8cyclictest3559179-21kworker/u8:0+flush-179:023:20:251
3489653997365,5cyclictest3536830-21kworker/u8:0+flush-179:021:45:151
3489653997364,6cyclictest3559179-21kworker/u8:0+flush-179:022:45:231
3489653997363,7cyclictest3513527-21kworker/u8:2+flush-179:020:30:001
3489652997265,5cyclictest3511866-21kworker/u8:3+flush-179:020:40:250
3489653997163,4cyclictest3589925-21kworker/u8:0+flush-179:000:20:171
3489653997064,4cyclictest3583576-21kworker/u8:2+flush-179:000:10:161
3489653997058,8cyclictest3540078-21kworker/u8:3+flush-179:021:50:191
3489652997063,4cyclictest3536830-21kworker/u8:0+events_unbound22:20:130
3489653996961,6cyclictest3495436-21kworker/u8:2+events_unbound19:55:011
3489652996960,4cyclictest3508949-21kworker/u8:0+events_unbound20:35:010
3489653996860,5cyclictest3492762-21kworker/u8:1+flush-179:019:30:201
3489653996859,6cyclictest3505775-21/usr/sbin/munin20:00:191
3489653996857,5cyclictest3559179-21kworker/u8:0+events_unbound22:55:141
3489653996762,4cyclictest3536830-21kworker/u8:0+flush-179:022:20:231
3489653996759,6cyclictest3508949-21kworker/u8:0+events_unbound20:55:261
3489653996558,5cyclictest3528574-21kworker/u8:1+flush-179:021:30:251
3489653996447,13cyclictest1213033-21systemd-journal23:31:361
3489653996356,5cyclictest3520421-21kworker/u8:2+events_unbound21:05:131
3489653996351,11cyclictest3557523-21kworker/u8:2+flush-179:022:40:211
3489653996255,5cyclictest3559179-21kworker/u8:0+flush-179:023:25:161
3489653996150,8cyclictest3546407-21latency_hist22:05:011
3489653996052,6cyclictest3503962-21kworker/u8:0+flush-179:020:00:001
3489653996050,7cyclictest3511866-21kworker/u8:3+flush-179:020:20:211
3489657995957,1cyclictest0-21swapper/219:39:582
3489653995948,8cyclictest3578992-21kworker/u8:3+events_unbound23:50:131
3489653995848,8cyclictest3495436-21kworker/u8:2+flush-179:019:29:591
3489653995752,4cyclictest3543249-21kworker/u8:2+flush-179:021:55:261
3489653995751,4cyclictest3536830-21kworker/u8:0+flush-179:022:30:161
3489653995750,6cyclictest3559179-21kworker/u8:0+flush-179:023:45:251
3489662995654,1cyclictest0-21swapper/320:48:003
3489653995542,12cyclictest3543249-21kworker/u8:2+flush-179:022:25:151
3489653995446,6cyclictest3528574-21kworker/u8:1+events_unbound21:20:141
3489662995250,1cyclictest0-21swapper/322:43:593
4577091510,13ptp4l61490irq/134-eno1-TxRx-019:10:003
3489662995149,1cyclictest0-21swapper/320:15:593
3489653994845,2cyclictest3492762-21kworker/u8:1+events_unbound19:45:161
348966299470,45cyclictest3546423-21turbostat22:05:003
3489652994135,5cyclictest3540078-21kworker/u8:3+events_unbound21:50:250
3489662994037,2cyclictest0-21swapper/319:22:593
3489662994037,2cyclictest0-21swapper/319:22:583
3489662994034,5cyclictest3515093-21turbostat20:30:013
348966299400,4cyclictest3565772-21turbostat23:05:003
348966299390,4cyclictest3495989-21turbostat19:34:543
348966299390,38cyclictest3495989-21turbostat19:30:003
348966299390,32cyclictest3557555-21turbostat22:40:003
348965799390,36cyclictest0-21swapper/219:44:562
3489662993832,5cyclictest3540053-21turbostat21:45:003
348966299380,3cyclictest3569206-21turbostat23:15:013
348966299380,37cyclictest3578770-21turbostat23:45:003
348966299380,1cyclictest0-21swapper/321:55:593
348965799380,36cyclictest0-21swapper/221:40:592
3489662993731,5cyclictest3543228-21turbostat21:55:003
3489657993735,1cyclictest0-21swapper/220:40:592
348965799370,35cyclictest0-21swapper/222:46:592
348965799370,35cyclictest0-21swapper/220:10:592
4577091360,4ptp4l61490irq/134-eno1-TxRx-020:30:043
3489662993633,2cyclictest0-21swapper/321:05:003
348966299360,35cyclictest0-21swapper/319:51:593
348966299360,35cyclictest0-21swapper/300:26:583
348965799360,1cyclictest0-21swapper/221:29:542
3489662993533,1cyclictest0-21swapper/323:49:553
3489662993530,4cyclictest3577159-21turbostat23:40:003
348966299350,1cyclictest0-21swapper/322:14:553
348966299350,1cyclictest0-21swapper/321:14:593
348966299350,1cyclictest0-21swapper/300:39:003
3489657993532,2cyclictest0-21swapper/220:18:002
3489662993432,1cyclictest0-21swapper/322:21:593
3489657993431,2cyclictest0-21swapper/220:31:002
3489657993431,2cyclictest0-21swapper/200:33:582
3489662993331,1cyclictest0-21swapper/323:55:583
3489662993331,1cyclictest0-21swapper/320:35:583
3489662993331,1cyclictest0-21swapper/320:23:583
3489662993327,5cyclictest3541632-21turbostat21:49:593
3489662993327,5cyclictest3538451-21turbostat21:40:003
3489657993330,2cyclictest0-21swapper/222:52:592
3489662993230,1cyclictest0-21swapper/323:29:553
3489662993230,1cyclictest0-21swapper/322:51:593
3489662993230,1cyclictest0-21swapper/322:19:563
3489662993230,1cyclictest0-21swapper/321:19:003
3489662993227,4cyclictest3570794-21turbostat23:20:003
3489657993229,2cyclictest0-21swapper/222:09:002
3489657993229,2cyclictest0-21swapper/222:08:592
3489657993229,2cyclictest0-21swapper/221:13:592
3489662993129,1cyclictest0-21swapper/321:06:583
3489662993125,5cyclictest3586777-21turbostat00:10:003
3489662993029,1cyclictest0-21swapper/322:34:593
3489657993028,1cyclictest0-21swapper/200:14:592
3489657993027,2cyclictest0-21swapper/223:39:002
3489657993027,2cyclictest0-21swapper/223:24:552
3489657993027,2cyclictest0-21swapper/222:20:132
3489657993027,2cyclictest0-21swapper/220:56:592
3489657993027,2cyclictest0-21swapper/200:00:022
348965799300,2cyclictest0-21swapper/220:05:132
4577091290,6ptp4l441ktimers/323:35:013
3489662992927,1cyclictest0-21swapper/323:20:163
3489662992927,1cyclictest0-21swapper/322:45:123
3489662992927,1cyclictest0-21swapper/320:55:593
3489662992927,1cyclictest0-21swapper/300:15:133
3489662992926,2cyclictest0-21swapper/323:05:013
3489662992926,2cyclictest0-21swapper/320:07:583
3489662992926,2cyclictest0-21swapper/300:10:133
3489662992923,5cyclictest3507135-21turbostat20:05:003
348966299290,28cyclictest0-21swapper/320:50:123
348966299290,28cyclictest0-21swapper/319:15:133
348966299290,27cyclictest0-21swapper/322:55:023
348966299290,27cyclictest0-21swapper/319:40:153
3489657992926,2cyclictest0-21swapper/223:40:132
348965799290,28cyclictest0-21swapper/222:40:132
348965799290,27cyclictest0-21swapper/223:15:102
348965799290,27cyclictest0-21swapper/221:55:132
348965799290,27cyclictest0-21swapper/221:45:122
348965799290,27cyclictest0-21swapper/221:35:132
348965799290,27cyclictest0-21swapper/221:15:032
348965799290,27cyclictest0-21swapper/221:08:592
348965799290,27cyclictest0-21swapper/220:50:022
348965799290,27cyclictest0-21swapper/220:25:592
348965799290,27cyclictest0-21swapper/200:40:022
348965799290,27cyclictest0-21swapper/200:25:012
3489662992823,4cyclictest3505535-21turbostat20:00:003
348966299280,27cyclictest0-21swapper/319:10:133
348966299280,26cyclictest0-21swapper/321:20:133
348966299280,26cyclictest0-21swapper/319:35:123
3489657992825,2cyclictest0-21swapper/222:15:112
3489657992825,2cyclictest0-21swapper/222:10:122
3489657992825,2cyclictest0-21swapper/200:00:132
348965799280,2cyclictest0-21swapper/220:35:032
348965799280,27cyclictest0-21swapper/200:27:592
348965799280,26cyclictest0-21swapper/223:33:592
348965799280,26cyclictest0-21swapper/223:25:132
348965799280,26cyclictest0-21swapper/223:05:032
348965799280,26cyclictest0-21swapper/223:00:592
348965799280,26cyclictest0-21swapper/221:00:592
4577091270,4ptp4l441ktimers/321:35:013
3489662992725,1cyclictest0-21swapper/320:10:143
348966299270,26cyclictest0-21swapper/322:25:123
348966299270,1cyclictest0-21swapper/319:49:583
3489657992724,2cyclictest0-21swapper/223:10:112
3489657992724,2cyclictest0-21swapper/219:54:542
3489657992724,2cyclictest0-21swapper/219:19:592
4577091260,4ptp4l441ktimers/300:25:003
4577091260,4ptp4l441ktimers/300:04:563
3489662992623,2cyclictest0-21swapper/322:08:593
3489662992623,2cyclictest0-21swapper/322:08:593
3489662992619,5cyclictest3581939-21turbostat23:55:013
348965799260,2cyclictest0-21swapper/200:09:002
348965799260,25cyclictest0-21swapper/219:32:002
348965799260,24cyclictest0-21swapper/200:15:122
4577091250,4ptp4l61490irq/134-eno1-TxRx-000:35:013
3489657992522,2cyclictest0-21swapper/219:47:002
3489657992522,2cyclictest0-21swapper/219:29:002
348965799250,2cyclictest0-21swapper/223:49:552
348965799250,2cyclictest0-21swapper/219:56:002
3489652992520,4cyclictest3489817-21latency_hist19:10:020
348966299240,1cyclictest0-21swapper/320:41:003
3489657992422,1cyclictest0-21swapper/223:55:012
3489657992422,1cyclictest0-21swapper/222:31:592
3489653992411,11cyclictest0-21swapper/119:10:011
3489662992321,1cyclictest0-21swapper/321:26:593
3489657992321,1cyclictest0-21swapper/221:25:002
3489657992321,1cyclictest0-21swapper/220:05:012
3489657992320,2cyclictest0-21swapper/221:30:132
3489657992320,2cyclictest0-21swapper/220:24:542
3489657992219,2cyclictest0-21swapper/222:27:592
3489657992219,2cyclictest0-21swapper/222:04:552
3489657992219,2cyclictest0-21swapper/219:14:002
3489657992017,2cyclictest0-21swapper/222:58:592
3489657992017,2cyclictest0-21swapper/221:54:552
3489657992017,2cyclictest0-21swapper/220:48:592
3489657991613,2cyclictest0-21swapper/222:38:592
348965799118,2cyclictest351rcuc/219:21:592
348965799118,2cyclictest351rcuc/219:21:592
34896579942,1cyclictest0-21swapper/219:10:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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