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2026-07-18 - 18:19
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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 Sat Jul 18, 2026 12:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
392519199166133,21cyclictest3929836-21latency_hist07:25:011
392519199148137,8cyclictest1213033-21systemd-journal10:10:001
392518899144139,4cyclictest3960317-21kworker/u8:2+events_unbound09:19:590
392519199140130,7cyclictest3949216-21latency_hist08:25:021
392518899131118,10cyclictest1213033-21systemd-journal11:15:010
3925188991310,128cyclictest1-21systemd09:55:010
392519199130122,5cyclictest3950836-21kworker/u8:0+flush-179:008:35:221
392518899130119,4cyclictest3995649-21kworker/u8:1+events_unbound10:55:260
392518899129122,5cyclictest3997290-21kworker/u8:2+events_unbound12:05:200
39251919912587,35cyclictest1213033-21systemd-journal11:20:001
392518899125118,4cyclictest3960317-21kworker/u8:2+events_unbound09:25:230
3925188991251,121cyclictest1-21systemd08:50:010
392518899124118,4cyclictest3975700-21kworker/u8:0+events_unbound10:00:200
392519199122114,5cyclictest4022977-21latency_hist12:15:011
392518899119114,4cyclictest3997290-21kworker/u8:2+events_unbound11:50:230
392518899118108,7cyclictest3961946-21latency_hist09:05:010
39251919911690,23cyclictest3962201-21apt-get09:05:121
392518899112106,4cyclictest3944471-21kworker/u8:3+events_unbound08:15:190
392518899110105,4cyclictest3980116-21kworker/u8:1+events_unbound10:15:250
392518899110101,3cyclictest3969884-21kworker/u8:0+events_unbound09:35:140
39251919910797,7cyclictest3933247-21kworker/u8:2+flush-179:007:45:241
392518899106101,4cyclictest3955561-21kworker/u8:0+events_unbound08:50:240
39251889910596,3cyclictest3961990-21kworker/u8:3+events_unbound10:10:250
39251919910392,8cyclictest4002549-21apt-get11:10:131
39251919910391,9cyclictest3941518-21apt-get08:00:121
39251889910398,4cyclictest4010224-21kworker/u8:0+events_unbound11:40:250
39251889910398,3cyclictest3933247-21kworker/u8:2+events_unbound07:45:230
39251889910292,3cyclictest4011889-21kworker/u8:3+events_unbound11:55:240
39251919910189,9cyclictest1213033-21systemd-journal11:55:001
39251889910195,4cyclictest4014054-21kworker/u8:1+events_unbound12:00:230
39251889910191,4cyclictest3987703-21kworker/u8:3+events_unbound10:50:260
39251889910191,4cyclictest3987703-21kworker/u8:3+events_unbound10:50:250
39251919910090,7cyclictest3981054-21apt-get10:05:001
3925188999994,4cyclictest3926690-21kworker/u8:2+events_unbound07:20:230
3925188999888,4cyclictest4011889-21kworker/u8:3+events_unbound11:45:240
3925188999791,4cyclictest3986318-21kworker/u8:0+events_unbound10:20:180
3925188999791,4cyclictest3933247-21kworker/u8:2+events_unbound07:50:110
3925188999787,3cyclictest3961990-21kworker/u8:3+events_unbound09:05:230
3925188999690,4cyclictest3961990-21kworker/u8:3+events_unbound09:10:260
3925191999583,9cyclictest3941010-21apt-get08:00:001
3925191999583,9cyclictest3941010-21apt-get08:00:001
3925188999387,4cyclictest3946060-21kworker/u8:1+events_unbound08:30:190
3925191999283,6cyclictest3933247-21kworker/u8:2+events_unbound07:50:191
3925188999288,3cyclictest3975700-21kworker/u8:0+events_unbound09:45:250
3925188999287,4cyclictest4006036-21kworker/u8:1+events_unbound11:35:260
3925191999184,4cyclictest4014054-21kworker/u8:1+flush-179:012:00:231
3925191999172,12cyclictest3975700-21kworker/u8:0+flush-179:009:55:231
3925188999186,3cyclictest3950836-21kworker/u8:0+events_unbound08:35:170
3925188999181,4cyclictest3961990-21kworker/u8:3+events_unbound09:40:220
3925191999083,5cyclictest3955617-21kworker/u8:2+flush-179:008:45:241
3925191999081,6cyclictest3973090-21latency_hist09:40:021
3925188999085,4cyclictest4011889-21kworker/u8:3+events_unbound12:10:130
3925188999085,4cyclictest3922707-21kworker/u8:0+events_unbound07:10:240
3925188999082,5cyclictest3987703-21kworker/u8:3+flush-179:010:40:000
3925191998980,6cyclictest3935184-21diskstats07:40:151
3925188998984,4cyclictest4023012-21kworker/u8:1+events_unbound12:30:150
3925188998981,5cyclictest3936225-21latency_hist07:45:010
3925188998879,3cyclictest4000482-21kworker/u8:1+events_unbound11:05:160
3925191998776,9cyclictest1213033-21systemd-journal10:15:001
3925188998783,3cyclictest3944471-21kworker/u8:3+events_unbound08:10:190
3925188998781,4cyclictest4007710-21kworker/u8:3+events_unbound11:30:230
3925188998774,10cyclictest1213033-21systemd-journal07:20:010
3925188998680,5cyclictest4011889-21kworker/u8:3+events_unbound12:15:230
3925188998678,5cyclictest3942850-21latency_hist08:05:010
3925191998577,6cyclictest3946019-21latency_hist08:15:011
3925191998567,16cyclictest3955561-21kworker/u8:0+flush-179:008:55:261
3925195998454,1cyclictest0-21swapper/311:13:003
3925191998376,4cyclictest4030944-21latency_hist12:40:011
3925191998268,12cyclictest4000482-21kworker/u8:1+flush-179:011:05:251
3925188998274,6cyclictest4023012-21kworker/u8:1+flush-179:012:40:010
3925191998172,6cyclictest3990893-21latency_hist10:35:001
3925188998076,3cyclictest3933247-21kworker/u8:2+events_unbound07:55:140
3925188998076,3cyclictest3933247-21kworker/u8:2+events_unbound07:55:140
3925191997970,7cyclictest3987703-21kworker/u8:3+events_unbound10:35:271
3925188997974,4cyclictest3944471-21kworker/u8:3+events_unbound08:44:190
3925188997970,3cyclictest3987703-21kworker/u8:3+events_unbound10:30:160
3925191997872,4cyclictest3961990-21kworker/u8:3+flush-179:009:20:181
3925188997874,3cyclictest3992737-21kworker/u8:0+events_unbound10:45:150
3925191997766,5cyclictest3922707-21kworker/u8:0+events_unbound07:30:261
3925191997763,8cyclictest4011889-21kworker/u8:3+flush-179:011:45:221
3925191997669,4cyclictest3961990-21kworker/u8:3+flush-179:009:10:191
3925191997667,6cyclictest1213033-21systemd-journal09:55:011
3925191997665,7cyclictest3997290-21kworker/u8:2+flush-179:012:05:151
3925191997568,5cyclictest3940960-21kworker/u8:0+flush-179:008:05:191
3925188997567,6cyclictest4021373-21kworker/u8:0+flush-179:012:20:250
3925191997467,5cyclictest3944471-21kworker/u8:3+events_unbound08:25:141
3925191997466,6cyclictest3961990-21kworker/u8:3+flush-179:009:40:151
3925191997466,5cyclictest3955561-21kworker/u8:0+events_unbound08:50:221
3925188997369,3cyclictest3997290-21kworker/u8:2+events_unbound11:01:010
3925188997369,3cyclictest3975700-21kworker/u8:0+flush-179:009:57:200
3925188997367,5cyclictest3940960-21kworker/u8:0+flush-179:008:05:240
3925191997267,4cyclictest4023012-21kworker/u8:1+flush-179:012:30:171
3925188997267,4cyclictest3923578-21kworker/u8:1+events_unbound07:34:570
3925188997262,4cyclictest3987703-21kworker/u8:3+events_unbound10:44:210
3925191997162,7cyclictest4000449-21latency_hist11:05:001
3925188997164,5cyclictest4007710-21kworker/u8:3+events_unbound11:30:010
3925188997066,3cyclictest3955561-21kworker/u8:0+events_unbound08:56:190
3925188996964,4cyclictest3961990-21kworker/u8:3+events_unbound10:09:550
3925191996863,4cyclictest3975700-21kworker/u8:0+flush-179:009:45:261
3925191996861,4cyclictest3922707-21kworker/u8:0+flush-179:007:25:161
3925188996859,7cyclictest3961990-21kworker/u8:3+flush-179:009:30:220
3925191996761,4cyclictest3986318-21kworker/u8:0+events_unbound10:20:131
3925191996759,6cyclictest3947627-21latency_hist08:20:011
3925191996758,6cyclictest3961990-21kworker/u8:3+flush-179:009:30:171
3925188996763,3cyclictest3944471-21kworker/u8:3+events_unbound08:29:570
3925191996660,3cyclictest3987703-21kworker/u8:3+events_unbound10:40:151
3925191996658,6cyclictest4006036-21kworker/u8:1+events_unbound11:20:201
3925191996657,6cyclictest1213033-21systemd-journal10:45:471
3925191996656,7cyclictest4010224-21kworker/u8:0+flush-179:011:40:211
3925188996661,4cyclictest4003914-21kworker/u8:0+flush-179:011:20:020
3925193996460,2cyclictest0-21swapper/209:45:592
3925191996454,8cyclictest3954536-21diskstats08:40:151
3925191996357,4cyclictest3923578-21kworker/u8:1+events_unbound07:15:191
3925191996255,5cyclictest4021373-21kworker/u8:0+events_unbound12:25:241
3925191996150,8cyclictest3997290-21kworker/u8:2+flush-179:011:40:001
3925191995951,5cyclictest3992737-21kworker/u8:0+events_unbound10:55:201
3925191995948,7cyclictest3980116-21kworker/u8:1+flush-179:010:25:221
3925191995851,5cyclictest3944471-21kworker/u8:3+flush-179:008:30:221
3925191995845,12cyclictest4007710-21kworker/u8:3+flush-179:011:30:011
3925188995753,3cyclictest3944471-21kworker/u8:3+events_unbound08:24:560
3925188995750,5cyclictest4021373-21kworker/u8:0+flush-179:012:25:230
3925188995652,3cyclictest3987703-21kworker/u8:3+events_unbound10:29:560
3925191995549,4cyclictest4021373-21kworker/u8:0+flush-179:012:20:231
3925188995551,3cyclictest3997290-21kworker/u8:2+events_unbound11:19:200
3925188995544,8cyclictest3933247-21kworker/u8:2+flush-179:007:35:190
3925188995544,8cyclictest3933247-21kworker/u8:2+flush-179:007:35:190
3925191995447,5cyclictest3961990-21kworker/u8:3+events_unbound09:15:241
3925191995245,4cyclictest3933247-21kworker/u8:2+flush-179:007:35:161
3925191995245,4cyclictest3933247-21kworker/u8:2+flush-179:007:35:151
3925191995044,4cyclictest3980116-21kworker/u8:1+flush-179:010:15:161
3925188995037,10cyclictest3967268-21diskstats09:20:150
3925191994939,8cyclictest3995925-21apt-get10:50:131
3925191994939,8cyclictest3995925-21apt-get10:50:121
4577091480,13ptp4l61490irq/134-eno1-TxRx-007:09:553
3925191994736,8cyclictest3997290-21kworker/u8:2+events_unbound11:55:191
3925191994638,5cyclictest3960317-21kworker/u8:2+flush-179:009:00:231
4577091440,3ptp4l441ktimers/310:44:553
3925195994437,5cyclictest3982891-21turbostat10:09:593
3925191994437,5cyclictest3961990-21kworker/u8:3+flush-179:009:25:181
3925193994340,2cyclictest0-21swapper/208:23:592
3925191994338,4cyclictest3922707-21kworker/u8:0+flush-179:007:10:181
3925195994238,3cyclictest431rcuc/312:29:553
3925195994139,1cyclictest0-21swapper/309:44:563
3925193994138,2cyclictest0-21swapper/208:01:592
3925195994038,1cyclictest0-21swapper/312:04:563
3925193993933,5cyclictest0-21swapper/208:44:592
392519399390,2cyclictest0-21swapper/209:51:592
3925188993935,3cyclictest3922707-21kworker/u8:0+events_unbound07:25:260
231999390,9rtkit-daemon2777326-21munin-node07:07:071
392519599380,4cyclictest3939408-21turbostat07:55:003
392519399380,35cyclictest0-21swapper/208:56:592
392519399380,35cyclictest0-21swapper/207:40:002
392519399380,35cyclictest0-21swapper/207:39:592
392519399380,2cyclictest0-21swapper/210:29:552
3925191993832,4cyclictest1-21systemd12:20:011
4577091370,3ptp4l61490irq/134-eno1-TxRx-007:40:143
3925195993734,2cyclictest0-21swapper/310:23:583
3925195993734,2cyclictest0-21swapper/309:19:583
3925195993734,2cyclictest0-21swapper/308:08:593
3925195993732,4cyclictest3946029-21turbostat08:15:003
392519599370,30cyclictest0-21swapper/308:18:593
3925193993734,2cyclictest0-21swapper/211:54:552
3925193993733,2cyclictest0-21swapper/210:38:592
392519399370,2cyclictest0-21swapper/210:58:592
392519399370,2cyclictest0-21swapper/209:05:592
3925191993734,2cyclictest4010224-21kworker/u8:0+flush-179:011:30:571
3925195993635,1cyclictest0-21swapper/309:13:003
3925195993634,1cyclictest0-21swapper/309:39:593
3925195993634,1cyclictest0-21swapper/308:51:593
392519599360,35cyclictest0-21swapper/312:35:593
3925193993634,1cyclictest0-21swapper/209:29:592
3925193993633,2cyclictest0-21swapper/211:32:582
3925193993633,2cyclictest0-21swapper/209:30:592
3925193993632,2cyclictest0-21swapper/207:46:002
3925195993533,1cyclictest0-21swapper/310:46:003
392519599350,1cyclictest0-21swapper/308:58:593
3925193993533,1cyclictest0-21swapper/212:30:002
392519399350,2cyclictest0-21swapper/209:15:132
392519399350,1cyclictest0-21swapper/208:49:592
3925195993432,1cyclictest0-21swapper/311:16:003
3925195993432,1cyclictest0-21swapper/307:34:003
3925195993431,2cyclictest0-21swapper/309:01:593
392519599340,33cyclictest0-21swapper/309:53:593
3925193993431,2cyclictest0-21swapper/210:53:592
3925193993431,2cyclictest0-21swapper/210:53:592
3925193993431,2cyclictest0-21swapper/207:14:552
392519399340,1cyclictest0-21swapper/207:30:142
3925195993331,1cyclictest0-21swapper/307:23:593
3925193993330,2cyclictest0-21swapper/212:05:592
3925193993330,2cyclictest0-21swapper/210:04:562
3925193993328,4cyclictest0-21swapper/211:06:592
392519399330,27cyclictest0-21swapper/210:15:152
3925195993230,1cyclictest0-21swapper/308:46:593
3925195993229,2cyclictest0-21swapper/310:02:593
3925195993229,2cyclictest0-21swapper/308:38:593
3925193993223,2cyclictest0-21swapper/209:10:152
392519399320,26cyclictest0-21swapper/208:35:112
3925195993129,1cyclictest0-21swapper/310:14:003
392519599310,30cyclictest0-21swapper/311:38:593
3925195993028,1cyclictest0-21swapper/309:09:593
392519599300,27cyclictest0-21swapper/311:45:143
3925193993027,2cyclictest0-21swapper/208:26:592
3925193993026,2cyclictest0-21swapper/211:14:552
392519399300,2cyclictest0-21swapper/207:25:582
392519399300,26cyclictest0-21swapper/211:15:152
4577091290,7ptp4l441ktimers/311:05:003
3925195992926,2cyclictest0-21swapper/308:00:133
3925195992922,5cyclictest3998870-21turbostat11:00:003
392519599290,27cyclictest0-21swapper/310:30:133
392519599290,1cyclictest0-21swapper/309:20:133
3925193992926,2cyclictest0-21swapper/212:20:582
3925193992926,2cyclictest0-21swapper/211:27:592
3925193992926,2cyclictest0-21swapper/209:55:152
3925193992926,2cyclictest0-21swapper/209:39:542
3925193992926,2cyclictest0-21swapper/208:10:152
3925193992923,5cyclictest0-21swapper/208:51:592
392519399290,27cyclictest0-21swapper/212:15:142
392519399290,27cyclictest0-21swapper/211:56:592
392519399290,27cyclictest0-21swapper/210:40:132
392519399290,27cyclictest0-21swapper/207:50:132
392519399290,27cyclictest0-21swapper/207:20:132
4577091280,6ptp4l441ktimers/308:30:023
3925195992826,1cyclictest0-21swapper/307:55:593
3925195992826,1cyclictest0-21swapper/307:55:593
3925195992825,2cyclictest0-21swapper/310:35:143
392519599280,2cyclictest0-21swapper/311:25:143
392519599280,27cyclictest0-21swapper/312:10:153
392519599280,26cyclictest0-21swapper/307:15:123
392519599280,21cyclictest0-21swapper/309:30:133
392519599280,21cyclictest0-21swapper/307:25:123
3925193992825,2cyclictest0-21swapper/208:06:592
392519399280,2cyclictest0-21swapper/207:55:132
392519399280,2cyclictest0-21swapper/207:55:132
4577091270,7ptp4l441ktimers/307:40:003
4577091270,7ptp4l441ktimers/307:40:003
4577091270,6ptp4l441ktimers/312:35:003
4577091270,6ptp4l441ktimers/311:55:003
4577091270,6ptp4l441ktimers/308:25:013
3925195992725,1cyclictest0-21swapper/311:21:583
3925195992725,1cyclictest0-21swapper/310:25:153
392519599270,25cyclictest4013450-21turbostat11:44:593
392519599270,1cyclictest0-21swapper/312:20:153
392519599270,1cyclictest0-21swapper/311:05:133
3925193992725,1cyclictest0-21swapper/208:20:002
3925193992724,2cyclictest0-21swapper/211:36:592
4577091260,6ptp4l61490irq/134-eno1-TxRx-012:00:003
4577091260,6ptp4l61490irq/134-eno1-TxRx-010:00:013
4577091260,6ptp4l441ktimers/307:15:003
3925195992623,2cyclictest0-21swapper/310:50:143
3925195992623,2cyclictest0-21swapper/310:50:133
3925195992623,2cyclictest0-21swapper/309:28:003
392519599260,1cyclictest0-21swapper/312:05:593
3925193992623,2cyclictest0-21swapper/212:15:002
3925193992623,2cyclictest0-21swapper/211:47:582
392519399260,24cyclictest0-21swapper/212:32:592
4577091250,5ptp4l441ktimers/307:50:003
3925195992523,1cyclictest0-21swapper/308:43:593
3925193992522,2cyclictest0-21swapper/211:20:592
3925193992522,2cyclictest0-21swapper/208:30:592
4577091240,5ptp4l61490irq/134-eno1-TxRx-009:49:553
4577091240,3ptp4l61490irq/134-eno1-TxRx-008:34:563
3925193992421,2cyclictest0-21swapper/210:23:592
4577091230,4ptp4l61490irq/134-eno1-TxRx-011:34:563
4577091230,3ptp4l61490irq/134-eno1-TxRx-010:19:563
4577091230,3ptp4l441ktimers/312:19:553
3925193992220,1cyclictest0-21swapper/211:04:592
3925193992118,2cyclictest0-21swapper/210:45:592
3925193992118,2cyclictest0-21swapper/209:21:582
3925193992118,2cyclictest0-21swapper/209:02:592
3925193992017,2cyclictest0-21swapper/212:35:582
3925193992017,2cyclictest0-21swapper/212:01:592
3925193992017,2cyclictest0-21swapper/207:19:592
3925193991916,2cyclictest0-21swapper/210:30:592
3925188991915,3cyclictest0-21swapper/007:10:020
3925193991815,2cyclictest0-21swapper/211:40:132
3925193991814,2cyclictest0-21swapper/210:11:592
3925193991714,2cyclictest0-21swapper/207:41:582
3925193991411,2cyclictest0-21swapper/209:42:002
392519399107,2cyclictest0-21swapper/210:05:052
39251939940,2cyclictest0-21swapper/207:10:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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