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2026-08-06 - 21:54
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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 Thu Aug 06, 2026 12:44:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
102018399154143,8cyclictest1071744-21latency_hist09:50:020
102018399138131,5cyclictest1047578-21kworker/u8:2+events_unbound08:50:000
102018399137124,10cyclictest1078349-21kworker/u8:0+flush-179:010:50:010
102018699134121,10cyclictest1115781-21latency_hist12:05:001
102018399131124,4cyclictest1117626-21latency_hist12:10:010
102018399129120,6cyclictest1084992-21kworker/u8:3+events_unbound10:35:010
102018399126119,4cyclictest1086640-21kworker/u8:2+flush-179:010:35:250
102018699125116,5cyclictest1078349-21kworker/u8:0+flush-179:011:00:231
1020183991240,119cyclictest1-21systemd10:05:010
102018699123110,9cyclictest1073330-21latency_hist09:55:021
102018399123118,4cyclictest1119243-21kworker/u8:0+events_unbound12:20:000
102018399122112,7cyclictest1127193-21latency_hist12:40:010
102018399122103,16cyclictest1038049-21latency_hist08:05:010
102018399115107,5cyclictest1031679-21latency_hist07:45:000
102018399115107,5cyclictest1031679-21latency_hist07:45:000
102018699114103,9cyclictest1125840-21apt-get12:35:111
102018399112104,5cyclictest1093216-21latency_hist10:55:000
102018399112102,8cyclictest1047594-21latency_hist08:35:000
10201839910695,9cyclictest510-21rs:main0
10201839910695,9cyclictest510-21rs:main0
10201869910596,6cyclictest1038084-21kworker/u8:1+flush-179:008:20:001
10201839910598,5cyclictest1052359-21kworker/u8:0+flush-179:009:35:210
10201839910597,6cyclictest1023701-21kworker/u8:0+events_unbound08:00:010
10201839910496,5cyclictest1108882-21kworker/u8:2+events_unbound11:40:240
10201839910495,7cyclictest1021304-21kworker/u8:1+events_unbound07:30:030
10201839910395,6cyclictest1062197-21apt-get09:20:110
10201839910295,5cyclictest1078349-21kworker/u8:0+flush-179:010:40:160
10201839910295,5cyclictest1078349-21kworker/u8:0+flush-179:010:40:160
10201839910093,5cyclictest1096650-21kworker/u8:1+flush-179:011:10:170
10201839910088,9cyclictest1026615-21latency_hist07:30:010
1020186999988,8cyclictest1025285-21apt-get07:25:121
1020183999992,5cyclictest1078349-21kworker/u8:0+flush-179:011:00:210
1020186999789,5cyclictest1109413-21latency_hist11:45:011
1020183999791,4cyclictest1073825-21kworker/u8:2+flush-179:010:05:170
1020183999791,4cyclictest1047578-21kworker/u8:2+events_unbound08:50:250
1020186999682,10cyclictest1213033-21systemd-journal07:40:011
1020186999488,4cyclictest1111235-21kworker/u8:3+flush-179:012:20:231
1020186999484,8cyclictest1087104-21apt-get10:35:111
1020186999481,9cyclictest510-21rs:main1
1020183999487,4cyclictest1084382-21kworker/u8:1+flush-179:010:25:250
1020186999383,7cyclictest1114197-21latency_hist12:00:011
1020186999383,7cyclictest1114197-21latency_hist12:00:011
1020186999382,9cyclictest1059000-21apt-get09:10:111
1020183999384,8cyclictest1021304-21kworker/u8:1+events_unbound07:25:000
1020186999281,8cyclictest1041266-21kworker/u8:3+events_unbound08:25:221
1020183999284,6cyclictest1111235-21kworker/u8:3+flush-179:012:15:000
1020186999180,7cyclictest1061976-21kworker/u8:3+flush-179:009:25:211
1020183999184,5cyclictest1101692-21kworker/u8:0+flush-179:011:30:250
1020183999184,5cyclictest1101692-21kworker/u8:0+flush-179:011:30:240
1020183999182,8cyclictest1078349-21kworker/u8:0+events_unbound11:00:000
1020186999080,7cyclictest1213033-21systemd-journal08:40:151
1020183999084,4cyclictest1101694-21kworker/u8:2+flush-179:011:25:200
1020183999083,5cyclictest1091664-21kworker/u8:3+flush-179:011:05:160
1020183999083,5cyclictest1091664-21kworker/u8:3+flush-179:011:05:160
1020183999081,7cyclictest1111235-21kworker/u8:3+events_unbound11:55:000
1020183998882,4cyclictest1030057-21kworker/u8:2+flush-179:008:15:220
1020183998879,6cyclictest1038084-21kworker/u8:1+flush-179:008:20:210
1020183998876,7cyclictest1033247-21kworker/u8:1+events_unbound07:55:000
1020183998780,4cyclictest1060363-21kworker/u8:2+events_unbound09:25:200
1020183998776,7cyclictest1070395-21kworker/u8:1+flush-179:009:55:210
1020183998774,10cyclictest1078349-21kworker/u8:0+flush-179:010:10:140
1020183998680,5cyclictest1052359-21kworker/u8:0+flush-179:009:00:200
1020183998677,6cyclictest1111235-21kworker/u8:3+flush-179:012:00:210
1020186998574,8cyclictest1033265-21latency_hist07:50:011
1020186998564,19cyclictest1116294-21apt-get12:05:121
1020183998473,8cyclictest1052359-21kworker/u8:0+events_unbound08:55:230
1020183998469,11cyclictest1213033-21systemd-journal09:45:010
1020186998378,3cyclictest1052359-21kworker/u8:0+events_unbound09:35:251
1020186998370,11cyclictest1086598-21apt-get10:35:011
1020183998376,5cyclictest1112840-21apt-get11:55:130
1020183998376,5cyclictest1112840-21apt-get11:55:120
1020183998368,10cyclictest510-21rs:main0
1020183998273,5cyclictest1052359-21kworker/u8:0+flush-179:009:05:210
1020183998268,10cyclictest1101184-21latency_hist11:20:000
1020186998171,7cyclictest1096650-21kworker/u8:1+events_unbound11:20:241
1020186998170,8cyclictest1122664-21apt-get12:25:121
1020183998174,5cyclictest1030057-21kworker/u8:2+events_unbound07:50:000
1020183998172,6cyclictest1021304-21kworker/u8:1+events_unbound07:15:010
1020186998069,7cyclictest1019957-21latency_hist07:10:021
1020183997971,5cyclictest1041266-21kworker/u8:3+events_unbound08:30:010
1020186997866,10cyclictest1078349-21kworker/u8:0+flush-179:011:00:011
1020183997869,7cyclictest1073825-21kworker/u8:2+flush-179:010:15:220
1020186997769,6cyclictest1104630-21latency_hist11:30:021
1020186997769,5cyclictest1060363-21kworker/u8:2+flush-179:009:30:171
1020183997771,5cyclictest1023701-21kworker/u8:0+flush-179:007:35:230
1020183997767,7cyclictest1060363-21kworker/u8:2+flush-179:009:15:130
1020186997661,11cyclictest1081591-21apt-get10:20:001
1020186997563,9cyclictest1101692-21kworker/u8:0+flush-179:011:35:001
1020186997563,9cyclictest1101692-21kworker/u8:0+flush-179:011:35:001
1020186997560,11cyclictest1000600-21kworker/u8:0+flush-179:007:10:031
1020183997565,8cyclictest1023701-21kworker/u8:0+events_unbound08:05:190
1020186997463,8cyclictest1073825-21kworker/u8:2+events_unbound10:00:241
1020186997164,5cyclictest1043087-21apt-get08:20:111
1020186997157,12cyclictest1073825-21kworker/u8:2+flush-179:010:05:121
1020183997165,5cyclictest1055605-21kworker/u8:1+flush-179:009:10:500
1020183997164,4cyclictest1041266-21kworker/u8:3+flush-179:008:35:230
1020183997163,6cyclictest1111235-21kworker/u8:3+events_unbound12:20:130
1020183997162,7cyclictest1073825-21kworker/u8:2+events_unbound10:20:130
1020183997162,6cyclictest1101692-21kworker/u8:0+flush-179:011:35:090
1020186997063,4cyclictest1041266-21kworker/u8:3+events_unbound08:35:261
1020183997063,4cyclictest1060363-21kworker/u8:2+flush-179:009:30:210
1020183996957,6cyclictest1047578-21kworker/u8:2+events_unbound08:40:200
1020186996862,5cyclictest1073825-21kworker/u8:2+events_unbound10:20:231
1020183996859,7cyclictest1052359-21kworker/u8:0+flush-179:009:50:190
1020186996659,5cyclictest1107815-21latency_hist11:40:011
1020183996659,5cyclictest1119243-21kworker/u8:0+events_unbound12:30:130
1020183996656,8cyclictest1108882-21kworker/u8:2+flush-179:011:45:200
1020183996654,10cyclictest1021304-21kworker/u8:1+flush-179:007:15:210
1020186996452,8cyclictest1047578-21kworker/u8:2+flush-179:008:50:201
1020186996152,7cyclictest1052359-21kworker/u8:0+flush-179:009:55:271
1020186996054,4cyclictest1083669-21apt-get10:25:121
1020186996053,5cyclictest1096650-21kworker/u8:1+events_unbound11:05:261
1020186996053,5cyclictest1096650-21kworker/u8:1+events_unbound11:05:251
1020186996053,5cyclictest1021304-21kworker/u8:1+flush-179:007:15:211
1020194995956,2cyclictest0-21swapper/210:53:002
1020186995949,8cyclictest1030057-21kworker/u8:2+flush-179:008:05:001
1020186995853,4cyclictest1078349-21kworker/u8:0+flush-179:010:45:421
1020186995846,8cyclictest1111235-21kworker/u8:3+events_unbound11:50:211
1020186995648,5cyclictest1021304-21kworker/u8:1+flush-179:007:20:101
1020186995547,6cyclictest1030057-21kworker/u8:2+events_unbound07:50:161
102018699542,49cyclictest1109668-21apt-get11:45:111
102018699531,49cyclictest1119467-21apt-get12:15:101
1020186995242,7cyclictest1046547-21diskstats08:30:141
1020186995241,8cyclictest1027131-21apt-get07:30:101
102018699521,48cyclictest0-21swapper/108:10:131
102018699521,48cyclictest0-21swapper/108:10:131
1020194995147,2cyclictest0-21swapper/210:25:002
1020186995140,8cyclictest1049238-21kworker/u8:1+flush-179:008:45:221
1020186995137,12cyclictest1078349-21kworker/u8:0+events_unbound10:10:191
102018699511,3cyclictest0-21swapper/108:05:121
4577091500,13ptp4l441ktimers/307:09:553
1020194994946,2cyclictest0-21swapper/209:55:582
1020186994942,5cyclictest1213033-21systemd-journal10:44:501
1020186994942,5cyclictest1213033-21systemd-journal10:44:501
1020186994939,8cyclictest1096650-21kworker/u8:1+flush-179:011:15:221
1020186994842,4cyclictest1052359-21kworker/u8:0+flush-179:008:55:231
1020186994842,4cyclictest1023701-21kworker/u8:0+flush-179:007:55:261
1020186994839,7cyclictest1060363-21kworker/u8:2+events_unbound09:45:011
102018699470,43cyclictest1057413-21apt-get09:05:141
1020186994638,6cyclictest1030057-21kworker/u8:2+flush-179:007:40:131
1020186994638,6cyclictest1030057-21kworker/u8:2+flush-179:007:40:121
1020186994438,5cyclictest1091664-21kworker/u8:3+events_unbound10:55:001
1020186994337,5cyclictest1071775-21systemd-run09:50:001
102018699430,1cyclictest0-21swapper/109:24:001
102018699420,25cyclictest0-21swapper/112:30:121
1020199994038,1cyclictest0-21swapper/310:52:593
102019999400,1cyclictest0-21swapper/309:04:593
1020194994037,2cyclictest0-21swapper/211:57:592
1020194994037,2cyclictest0-21swapper/211:57:592
1020183994033,5cyclictest1111235-21kworker/u8:3+flush-179:012:25:130
102019499390,36cyclictest0-21swapper/209:09:582
1020186993934,4cyclictest1052359-21kworker/u8:0+events_unbound09:20:001
102019999380,4cyclictest1038059-21turbostat08:05:003
1020194993834,2cyclictest0-21swapper/210:28:592
102019499380,35cyclictest0-21swapper/211:40:592
102019999370,35cyclictest0-21swapper/312:26:003
102019499370,35cyclictest0-21swapper/212:00:582
102019499370,35cyclictest0-21swapper/209:10:592
102019499370,35cyclictest0-21swapper/208:15:592
1020199993634,1cyclictest0-21swapper/311:14:563
1020199993634,1cyclictest0-21swapper/309:06:003
1020199993634,1cyclictest0-21swapper/307:58:593
1020199993634,1cyclictest0-21swapper/307:32:593
1020199993633,2cyclictest0-21swapper/311:39:593
102019999360,35cyclictest0-21swapper/311:42:003
1020186993627,7cyclictest1052359-21kworker/u8:0+events_unbound09:00:141
1020199993533,1cyclictest0-21swapper/310:08:593
102019999350,34cyclictest0-21swapper/312:11:593
102019999350,34cyclictest0-21swapper/308:53:003
102019999350,1cyclictest0-21swapper/309:29:563
1020194993532,2cyclictest0-21swapper/212:39:552
1020194993532,2cyclictest0-21swapper/209:38:002
1020194993431,2cyclictest0-21swapper/208:26:592
1020194993330,2cyclictest0-21swapper/209:43:582
1020194993330,2cyclictest0-21swapper/207:47:592
1020199993230,1cyclictest0-21swapper/308:44:563
1020199993230,1cyclictest0-21swapper/307:14:593
1020199993229,2cyclictest0-21swapper/310:25:003
1020194993229,2cyclictest0-21swapper/211:21:002
1020194993229,2cyclictest0-21swapper/210:42:592
1020194993229,2cyclictest0-21swapper/210:42:582
1020194993229,2cyclictest0-21swapper/209:23:002
102018699320,2cyclictest0-21swapper/111:10:051
45782913129,1phc2sys0-21swapper/309:18:593
4577091310,7ptp4l441ktimers/309:15:013
102019999310,30cyclictest0-21swapper/309:20:593
1020194993128,2cyclictest0-21swapper/208:51:592
102019499310,29cyclictest0-21swapper/208:35:132
4577091300,7ptp4l61490irq/134-eno1-TxRx-007:45:003
4577091300,7ptp4l61490irq/134-eno1-TxRx-007:45:003
4577091300,6ptp4l441ktimers/308:49:593
1020199993028,1cyclictest0-21swapper/310:00:593
102019999300,28cyclictest0-21swapper/312:35:123
102019999300,28cyclictest0-21swapper/311:15:133
1020194993027,2cyclictest0-21swapper/212:29:592
1020194993027,2cyclictest0-21swapper/211:29:582
1020194993027,2cyclictest0-21swapper/209:00:132
102019499300,28cyclictest0-21swapper/211:30:132
102019499300,28cyclictest0-21swapper/211:30:122
102019499300,28cyclictest0-21swapper/210:35:022
102019499300,28cyclictest0-21swapper/210:10:122
102019499300,28cyclictest0-21swapper/210:05:142
102019499300,28cyclictest0-21swapper/209:45:132
4577091290,7ptp4l441ktimers/309:44:563
4577091290,7ptp4l441ktimers/309:35:013
1020199992927,1cyclictest0-21swapper/312:05:023
1020199992927,1cyclictest0-21swapper/310:40:593
1020199992927,1cyclictest0-21swapper/310:40:593
1020199992927,1cyclictest0-21swapper/310:35:133
1020199992927,1cyclictest0-21swapper/309:50:113
1020199992927,1cyclictest0-21swapper/308:59:553
1020199992926,2cyclictest0-21swapper/312:30:123
1020199992926,2cyclictest0-21swapper/309:35:003
102019999290,28cyclictest0-21swapper/311:00:133
102019999290,1cyclictest0-21swapper/311:30:133
102019999290,1cyclictest0-21swapper/311:30:123
1020194992926,2cyclictest0-21swapper/207:23:592
1020194992926,2cyclictest0-21swapper/207:10:122
102019499290,27cyclictest0-21swapper/212:30:132
102019499290,27cyclictest0-21swapper/212:05:022
102019499290,27cyclictest0-21swapper/211:45:122
102019499290,27cyclictest0-21swapper/211:00:122
102019499290,27cyclictest0-21swapper/210:15:122
102019499290,27cyclictest0-21swapper/209:50:122
102019499290,27cyclictest0-21swapper/209:30:132
102019499290,27cyclictest0-21swapper/208:40:132
102019499290,27cyclictest0-21swapper/208:20:122
102019499290,27cyclictest0-21swapper/207:50:132
102019499290,27cyclictest0-21swapper/207:30:032
1020199992826,1cyclictest0-21swapper/310:35:023
1020199992826,1cyclictest0-21swapper/308:20:123
1020199992826,1cyclictest0-21swapper/308:13:593
1020199992826,1cyclictest0-21swapper/308:13:593
102019999280,27cyclictest0-21swapper/310:55:133
102019999280,27cyclictest0-21swapper/309:55:033
102019999280,27cyclictest0-21swapper/307:50:133
102019999280,26cyclictest0-21swapper/311:55:143
102019999280,26cyclictest0-21swapper/311:55:143
102019999280,26cyclictest0-21swapper/310:10:123
102019999280,26cyclictest0-21swapper/308:25:123
102019999280,21cyclictest0-21swapper/311:20:013
1020194992825,2cyclictest0-21swapper/211:05:132
1020194992825,2cyclictest0-21swapper/211:05:122
1020194992825,2cyclictest0-21swapper/210:57:592
1020194992825,2cyclictest0-21swapper/210:35:012
1020194992825,2cyclictest0-21swapper/209:25:582
1020194992825,2cyclictest0-21swapper/208:05:122
1020194992825,2cyclictest0-21swapper/207:25:132
102019499280,26cyclictest0-21swapper/210:45:582
102019499280,26cyclictest0-21swapper/207:55:142
4577091270,6ptp4l61490irq/134-eno1-TxRx-010:30:003
4577091270,6ptp4l441ktimers/308:34:553
4577091270,6ptp4l441ktimers/307:30:003
4577091270,5ptp4l441ktimers/311:30:003
4577091270,5ptp4l441ktimers/310:50:013
4577091270,5ptp4l441ktimers/309:50:013
1020199992725,1cyclictest0-21swapper/312:00:583
1020194992724,2cyclictest0-21swapper/212:24:592
102019499270,24cyclictest0-21swapper/208:01:592
4577091260,6ptp4l61490irq/134-eno1-TxRx-010:19:573
4577091260,5ptp4l61490irq/134-eno1-TxRx-008:40:013
4577091260,5ptp4l61490irq/134-eno1-TxRx-007:19:563
4577091260,4ptp4l441ktimers/308:20:003
4577091260,4ptp4l441ktimers/307:40:013
1020199992625,1cyclictest0-21swapper/311:50:123
1020199992625,1cyclictest0-21swapper/311:46:583
1020194992623,2cyclictest0-21swapper/212:18:002
102019499260,2cyclictest0-21swapper/210:01:592
102019499260,25cyclictest0-21swapper/208:12:592
102019499260,25cyclictest0-21swapper/208:12:592
4577091250,5ptp4l441ktimers/311:09:553
4577091250,5ptp4l441ktimers/311:09:553
4577091250,4ptp4l61490irq/134-eno1-TxRx-008:09:563
4577091250,4ptp4l441ktimers/307:25:003
1020199992523,1cyclictest0-21swapper/312:21:593
1020194992522,2cyclictest0-21swapper/212:13:592
1020194992522,2cyclictest0-21swapper/211:54:592
1020194992522,2cyclictest0-21swapper/207:44:592
1020194992522,2cyclictest0-21swapper/207:44:592
102019499250,2cyclictest0-21swapper/211:20:002
102019499250,2cyclictest0-21swapper/208:45:592
102019499250,2cyclictest0-21swapper/207:15:122
1020194992320,2cyclictest0-21swapper/207:35:592
1020194992219,2cyclictest0-21swapper/211:10:592
1020199992119,1cyclictest0-21swapper/307:47:593
1020194992016,2cyclictest0-21swapper/209:18:592
1020194991714,2cyclictest0-21swapper/211:37:592
1020194991714,2cyclictest0-21swapper/208:55:592
4577091160,3ptp4l441ktimers/312:19:593
1020194991612,2cyclictest0-21swapper/208:34:552
102018399141,11cyclictest1020202-21sed07:10:020
10201949940,2cyclictest0-21swapper/207:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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