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2026-07-20 - 16:55
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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 Mon Jul 20, 2026 12:44:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
97314199144136,5cyclictest968367-21kworker/u8:0+flush-179:007:10:030
97314199144133,8cyclictest1008942-21kworker/u8:1+events_unbound09:05:250
97314699141126,12cyclictest1213033-21systemd-journal09:10:011
97314199135129,4cyclictest977030-21kworker/u8:0+events_unbound07:30:240
97314199132124,6cyclictest1015406-21kworker/u8:1+events_unbound09:35:010
97314199131125,4cyclictest1034931-21kworker/u8:1+events_unbound10:45:250
97314199130122,6cyclictest992293-21latency_hist08:10:020
97314199129119,8cyclictest1213033-21systemd-journal11:40:010
97314199129119,8cyclictest1213033-21systemd-journal11:40:010
97314199128110,5cyclictest1000801-21kworker/u8:3+flush-179:008:50:210
97314199127121,4cyclictest1022020-21kworker/u8:0+events_unbound09:55:250
97314199127121,4cyclictest1022020-21kworker/u8:0+events_unbound09:55:250
97314199126120,4cyclictest977030-21kworker/u8:0+events_unbound08:35:240
97314199125116,6cyclictest977030-21kworker/u8:0+events_unbound07:25:170
97314699124110,11cyclictest1213033-21systemd-journal12:40:011
97314199124119,4cyclictest1073443-21kworker/u8:0+events_unbound12:35:250
97314199124118,4cyclictest1050853-21kworker/u8:0+flush-179:011:25:230
97314199124116,5cyclictest987493-21kworker/u8:2+events_unbound07:55:020
97314199123115,5cyclictest1041305-21kworker/u8:2+events_unbound11:20:210
97314199122116,4cyclictest1067070-21kworker/u8:2+flush-179:012:00:150
97314199122109,10cyclictest510-21rs:main0
97314699121111,7cyclictest951632-21kworker/u8:2+flush-179:007:20:011
97314199120112,5cyclictest977030-21kworker/u8:0+events_unbound07:45:140
97314199119112,5cyclictest1058864-21kworker/u8:0+events_unbound11:40:200
97314699118108,7cyclictest1031778-21latency_hist10:10:011
97314199118112,4cyclictest1050853-21kworker/u8:0+flush-179:011:10:220
97314199118111,5cyclictest991765-21kworker/u8:1+events_unbound08:25:010
97314199116110,4cyclictest977030-21kworker/u8:0+flush-179:008:20:220
97314199115110,4cyclictest1030430-21kworker/u8:2+flush-179:010:30:240
97314199115107,5cyclictest1054112-21kworker/u8:1+events_unbound11:30:190
97314699113104,6cyclictest977030-21kworker/u8:0+flush-179:008:20:221
97314199113106,5cyclictest1034931-21kworker/u8:1+flush-179:010:35:160
97314699112102,8cyclictest1057836-21diskstats11:30:181
97314199112106,5cyclictest1034931-21kworker/u8:1+events_unbound10:25:010
9731469911199,9cyclictest1063679-21apt-get11:50:001
97314199111105,5cyclictest1015406-21kworker/u8:1+flush-179:009:35:170
97314199111105,4cyclictest987493-21kworker/u8:2+events_unbound07:55:230
9731469911095,13cyclictest1067145-21kworker/u8:3+flush-179:012:05:261
97314199110103,6cyclictest1034931-21kworker/u8:1+flush-179:010:40:240
97314199110103,5cyclictest1008942-21kworker/u8:1+events_unbound09:05:000
97314199110102,6cyclictest1018578-21kworker/u8:2+flush-179:009:45:210
9731419910997,9cyclictest1213033-21systemd-journal09:55:000
97314199109104,4cyclictest1000801-21kworker/u8:3+flush-179:009:10:250
97314199109104,4cyclictest1000801-21kworker/u8:3+flush-179:009:10:250
97314199109102,5cyclictest1015406-21kworker/u8:1+events_unbound09:25:180
97314199109100,6cyclictest1005805-21latency_hist08:50:000
9731469910899,6cyclictest1047705-21latency_hist11:00:011
97314199108103,4cyclictest895611-21kworker/u8:1+flush-179:007:15:270
9731469910791,14cyclictest1000801-21kworker/u8:3+flush-179:009:30:241
9731419910799,6cyclictest977030-21kworker/u8:0+events_unbound08:35:000
9731419910695,9cyclictest1070536-21apt-get12:10:120
9731419910694,8cyclictest1063659-21latency_hist11:50:010
97314199106101,4cyclictest1030430-21kworker/u8:2+events_unbound10:05:230
97314199105101,3cyclictest991765-21kworker/u8:1+flush-179:008:15:280
9731469910495,6cyclictest991765-21kworker/u8:1+flush-179:008:25:221
9731469910492,9cyclictest977030-21kworker/u8:0+flush-179:007:45:171
9731419910498,5cyclictest1071855-21kworker/u8:1+flush-179:012:30:250
9731419910498,4cyclictest1030430-21kworker/u8:2+flush-179:010:25:280
9731469910390,10cyclictest1030430-21kworker/u8:2+flush-179:010:25:241
9731419910399,3cyclictest1000801-21kworker/u8:3+flush-179:008:55:260
9731419910397,4cyclictest1067070-21kworker/u8:2+flush-179:012:15:210
9731419910397,4cyclictest1000801-21kworker/u8:3+flush-179:009:15:250
9731419910297,4cyclictest1067070-21kworker/u8:2+events_unbound12:05:150
9731419910195,4cyclictest1030430-21kworker/u8:2+flush-179:010:10:150
9731419910194,4cyclictest1041305-21kworker/u8:2+flush-179:010:50:240
9731469910090,7cyclictest1041305-21kworker/u8:2+flush-179:011:10:271
973146999993,4cyclictest1022020-21kworker/u8:0+flush-179:010:00:241
973141999994,4cyclictest1000801-21kworker/u8:3+flush-179:008:40:250
973141999990,7cyclictest983014-21apt-get07:40:110
973141999893,3cyclictest1030430-21kworker/u8:2+flush-179:010:15:180
973146999787,8cyclictest1022020-21kworker/u8:0+flush-179:009:50:011
973146999684,8cyclictest1002359-21apt-get08:40:011
973141999690,4cyclictest981105-21kworker/u8:1+flush-179:007:35:220
973146999588,4cyclictest1073443-21kworker/u8:0+flush-179:012:20:011
973141999588,5cyclictest1022020-21kworker/u8:0+flush-179:010:00:140
973146999486,6cyclictest1038180-21kworker/u8:0+flush-179:010:35:001
973146999482,9cyclictest987493-21kworker/u8:2+flush-179:007:55:221
973141999484,8cyclictest976623-21apt-get07:20:120
973146999385,5cyclictest1044511-21latency_hist10:50:011
973146999383,8cyclictest1034931-21kworker/u8:1+flush-179:011:00:161
973146999379,10cyclictest1213033-21systemd-journal12:00:011
973146999285,4cyclictest1000801-21kworker/u8:3+flush-179:008:40:241
973146999280,8cyclictest968367-21kworker/u8:0+flush-179:007:10:161
973141999286,4cyclictest987493-21kworker/u8:2+flush-179:008:00:170
973141999284,5cyclictest1034931-21kworker/u8:1+events_unbound10:55:200
973146999183,5cyclictest991765-21kworker/u8:1+flush-179:008:15:231
973141999176,11cyclictest1023588-21apt-get09:45:000
973141999081,6cyclictest1050875-21latency_hist11:10:010
973146998881,5cyclictest1054112-21kworker/u8:1+flush-179:011:30:001
973146998881,5cyclictest1034931-21kworker/u8:1+flush-179:010:50:151
973146998880,6cyclictest1030430-21kworker/u8:2+flush-179:010:15:001
973146998679,5cyclictest981105-21kworker/u8:1+events_unbound07:35:001
973141998682,3cyclictest1058864-21kworker/u8:0+flush-179:011:50:280
973141998681,3cyclictest1073443-21kworker/u8:0+flush-179:012:25:190
973141998681,3cyclictest1000801-21kworker/u8:3+events_unbound09:20:160
973141998680,4cyclictest1034931-21kworker/u8:1+events_unbound11:00:140
973141998569,6cyclictest1067070-21kworker/u8:2+events_unbound12:20:200
973146998475,7cyclictest1007644-21apt-get08:55:111
973141998378,4cyclictest1058864-21kworker/u8:0+events_unbound11:55:190
973146998273,7cyclictest1015406-21kworker/u8:1+events_unbound10:00:011
973146998273,7cyclictest1015406-21kworker/u8:1+events_unbound10:00:011
973146998261,16cyclictest951632-21kworker/u8:2+flush-179:007:25:001
973146998167,11cyclictest510-21rs:main1
973141998076,2cyclictest1050853-21kworker/u8:0+events_unbound11:15:250
973146997972,5cyclictest977030-21kworker/u8:0+events_unbound08:10:241
973146997968,8cyclictest1004199-21kworker/u8:2+flush-179:008:45:231
973146997963,13cyclictest1000801-21kworker/u8:3+flush-179:009:10:191
973146997963,13cyclictest1000801-21kworker/u8:3+flush-179:009:10:191
973146997864,11cyclictest1067145-21kworker/u8:3+events_unbound12:10:181
973146997771,4cyclictest1050853-21kworker/u8:0+flush-179:011:20:011
973146997769,6cyclictest1041305-21kworker/u8:2+events_unbound11:35:231
973146997769,6cyclictest1041305-21kworker/u8:2+events_unbound11:35:221
973146997769,5cyclictest1000801-21kworker/u8:3+events_unbound09:15:251
973146997670,4cyclictest1010586-21latency_hist09:05:011
973146997668,5cyclictest1060539-21kworker/u8:3+flush-179:011:50:161
973146997663,7cyclictest1022020-21kworker/u8:0+flush-179:009:50:211
973146997566,7cyclictest981112-21kworker/u8:3+flush-179:007:50:221
973146997367,4cyclictest1018578-21kworker/u8:2+events_unbound09:40:251
973146997161,7cyclictest1041305-21kworker/u8:2+flush-179:011:10:011
973146997062,6cyclictest1000801-21kworker/u8:3+flush-179:008:55:011
973146996964,4cyclictest1030430-21kworker/u8:2+flush-179:010:15:141
973146996963,4cyclictest991765-21kworker/u8:1+events_unbound08:30:181
973146996959,8cyclictest1020558-21cat09:35:021
973146996858,7cyclictest1000801-21kworker/u8:3+flush-179:009:25:221
973146996761,4cyclictest1073443-21kworker/u8:0+flush-179:012:25:141
973146996560,4cyclictest981112-21kworker/u8:3+flush-179:007:40:211
973146996555,7cyclictest1034931-21kworker/u8:1+events_unbound10:40:221
973146996543,20cyclictest992307-21apt-get08:10:001
973146996458,5cyclictest1050853-21kworker/u8:0+events_unbound11:20:151
973146996457,5cyclictest1034931-21kworker/u8:1+flush-179:010:20:261
973146996455,7cyclictest1213033-21systemd-journal12:25:011
97314799630,61cyclictest0-21swapper/212:21:582
97314799620,60cyclictest0-21swapper/212:36:582
973146996257,4cyclictest1034931-21kworker/u8:1+flush-179:010:35:261
97314799610,1cyclictest0-21swapper/211:45:582
973146996156,3cyclictest1071855-21kworker/u8:1+flush-179:012:30:271
973146996155,4cyclictest987493-21kworker/u8:2+events_unbound08:00:241
973146995748,6cyclictest979539-21latency_hist07:30:021
973147995451,2cyclictest0-21swapper/211:04:582
973146995348,3cyclictest1058864-21kworker/u8:0+flush-179:011:40:161
973147995250,1cyclictest0-21swapper/208:19:592
973146995044,5cyclictest981105-21kworker/u8:1+flush-179:007:35:151
4577091490,13ptp4l441ktimers/307:09:563
973146994237,4cyclictest1000801-21kworker/u8:3+events_unbound09:20:141
973147994138,2cyclictest0-21swapper/210:21:592
97314799400,37cyclictest0-21swapper/207:14:592
973150993937,1cyclictest0-21swapper/311:10:003
973150993934,4cyclictest974769-21turbostat07:14:593
973147993936,2cyclictest0-21swapper/210:18:592
973150993830,6cyclictest1005815-21turbostat08:50:003
97315099380,35cyclictest0-21swapper/307:20:593
97314799380,36cyclictest0-21swapper/212:05:582
97314799380,36cyclictest0-21swapper/208:12:002
973147993733,2cyclictest0-21swapper/210:57:592
97314799370,35cyclictest0-21swapper/209:27:592
97314799370,35cyclictest0-21swapper/207:45:592
97314799370,1cyclictest0-21swapper/207:44:002
973150993635,1cyclictest0-21swapper/311:52:593
973150993634,1cyclictest0-21swapper/310:49:593
973150993633,2cyclictest0-21swapper/307:28:593
97315099360,35cyclictest0-21swapper/312:17:583
97315099360,35cyclictest0-21swapper/309:35:593
97315099360,1cyclictest0-21swapper/312:35:593
97315099360,1cyclictest0-21swapper/310:01:593
97315099360,1cyclictest0-21swapper/307:18:003
973147993633,2cyclictest0-21swapper/210:47:582
973147993633,2cyclictest0-21swapper/208:37:592
973147993632,2cyclictest0-21swapper/207:28:002
97314799360,1cyclictest0-21swapper/212:15:002
97314799360,1cyclictest0-21swapper/211:23:592
97315099350,1cyclictest0-21swapper/311:47:593
97315099350,1cyclictest0-21swapper/307:52:593
97314799350,1cyclictest0-21swapper/209:05:002
973150993432,1cyclictest0-21swapper/311:24:553
973150993431,2cyclictest0-21swapper/311:43:593
973147993330,2cyclictest0-21swapper/211:09:552
973147993330,2cyclictest0-21swapper/210:00:592
973147993330,2cyclictest0-21swapper/207:50:592
973147993329,2cyclictest0-21swapper/210:53:592
973147993329,2cyclictest0-21swapper/209:35:592
973150993230,1cyclictest0-21swapper/312:24:563
973150993229,2cyclictest0-21swapper/310:44:583
97315099320,25cyclictest4577091ptp4l09:05:593
4577091320,26ptp4l67-21kworker/3:1+events08:20:133
973150993129,1cyclictest0-21swapper/311:34:543
973150993129,1cyclictest0-21swapper/308:40:023
973150993129,1cyclictest0-21swapper/308:40:013
973150993129,1cyclictest0-21swapper/307:30:123
97315099310,29cyclictest0-21swapper/310:15:113
97315099310,1cyclictest0-21swapper/308:07:593
973150993027,2cyclictest0-21swapper/310:50:133
973150993027,2cyclictest0-21swapper/309:45:013
97315099300,28cyclictest0-21swapper/307:45:133
973147993027,2cyclictest0-21swapper/211:15:162
97314799300,28cyclictest0-21swapper/208:05:122
97314799300,28cyclictest0-21swapper/208:00:132
973150992926,2cyclictest0-21swapper/310:35:133
97315099290,28cyclictest1078244-21turbostat12:34:593
97315099290,27cyclictest0-21swapper/312:10:143
97315099290,27cyclictest0-21swapper/307:40:133
973147992926,2cyclictest0-21swapper/212:15:142
973147992926,2cyclictest0-21swapper/211:55:152
973147992926,2cyclictest0-21swapper/211:52:592
973147992926,2cyclictest0-21swapper/211:25:132
973147992926,2cyclictest0-21swapper/211:11:002
973147992926,2cyclictest0-21swapper/209:45:152
973147992926,2cyclictest0-21swapper/208:30:142
973147992926,2cyclictest0-21swapper/207:55:142
973147992925,2cyclictest0-21swapper/208:45:152
97314799290,28cyclictest0-21swapper/209:15:142
97314799290,27cyclictest0-21swapper/209:50:122
97314799290,27cyclictest0-21swapper/209:35:022
97314799290,27cyclictest0-21swapper/209:05:142
97314799290,27cyclictest0-21swapper/207:20:132
4577091290,7ptp4l441ktimers/311:19:563
973150992826,1cyclictest0-21swapper/311:27:003
973150992826,1cyclictest0-21swapper/309:25:133
973150992826,1cyclictest0-21swapper/307:57:593
973150992825,2cyclictest0-21swapper/310:10:123
973150992824,3cyclictest994142-21turbostat08:15:003
97315099280,2cyclictest0-21swapper/311:35:143
97315099280,2cyclictest0-21swapper/311:35:143
97315099280,2cyclictest0-21swapper/310:25:153
97315099280,2cyclictest0-21swapper/310:20:133
97315099280,27cyclictest0-21swapper/311:02:593
97315099280,27cyclictest0-21swapper/309:45:013
97315099280,27cyclictest0-21swapper/308:50:593
97315099280,26cyclictest0-21swapper/312:25:143
973147992825,2cyclictest0-21swapper/212:30:152
973147992825,2cyclictest0-21swapper/212:00:122
973147992825,2cyclictest0-21swapper/211:32:592
973147992825,2cyclictest0-21swapper/210:08:592
973147992825,2cyclictest0-21swapper/208:40:022
973147992825,2cyclictest0-21swapper/208:20:592
4577091280,6ptp4l61490irq/134-eno1-TxRx-008:20:013
4577091280,6ptp4l441ktimers/312:00:003
4577091280,6ptp4l441ktimers/308:30:003
973150992725,1cyclictest0-21swapper/310:32:593
97315099270,2cyclictest1070292-21turbostat12:10:003
973146992722,3cyclictest973223-21sort07:10:021
4577091270,7ptp4l61490irq/134-eno1-TxRx-008:05:003
4577091270,6ptp4l61490irq/134-eno1-TxRx-010:09:553
4577091270,6ptp4l61490irq/134-eno1-TxRx-010:00:013
4577091270,6ptp4l61490irq/134-eno1-TxRx-010:00:013
4577091270,6ptp4l441ktimers/309:05:003
4577091270,6ptp4l441ktimers/307:40:013
4577091270,5ptp4l441ktimers/312:05:003
4577091270,5ptp4l441ktimers/311:15:013
231999270,15rtkit-daemon971990-21perl07:05:190
973150992624,1cyclictest0-21swapper/309:51:593
97315099260,25cyclictest1020127-21turbostat09:35:003
973147992623,2cyclictest0-21swapper/209:42:592
973147992623,2cyclictest0-21swapper/209:20:592
973147992623,2cyclictest0-21swapper/208:58:592
97314799260,24cyclictest0-21swapper/210:13:592
4577091260,6ptp4l61490irq/134-eno1-TxRx-009:15:003
4577091260,6ptp4l61490irq/134-eno1-TxRx-009:15:003
4577091260,5ptp4l61490irq/134-eno1-TxRx-008:34:553
4577091260,5ptp4l441ktimers/309:19:553
4577091260,4ptp4l441ktimers/309:00:013
973147992523,1cyclictest0-21swapper/212:26:002
973147992522,2cyclictest0-21swapper/211:35:142
973147992522,2cyclictest0-21swapper/211:35:132
973147992522,2cyclictest0-21swapper/210:30:132
973147992522,2cyclictest0-21swapper/209:13:592
973147992522,2cyclictest0-21swapper/209:13:592
973147992522,2cyclictest0-21swapper/207:39:582
4577091250,5ptp4l61490irq/134-eno1-TxRx-010:59:593
4577091240,5ptp4l61490irq/134-eno1-TxRx-009:24:553
973147992320,2cyclictest0-21swapper/208:28:592
973147992320,2cyclictest0-21swapper/207:17:592
973147992219,2cyclictest0-21swapper/208:53:582
973147992017,2cyclictest0-21swapper/209:58:592
973147992017,2cyclictest0-21swapper/209:58:592
973147991916,2cyclictest0-21swapper/211:42:002
973147991916,2cyclictest0-21swapper/210:44:592
973147991916,2cyclictest0-21swapper/210:29:562
973147991613,2cyclictest0-21swapper/207:30:592
973147991310,2cyclictest0-21swapper/210:38:592
9731479930,2cyclictest0-21swapper/207:10:032
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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