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2026-07-18 - 01:09
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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 792 highest latencies:
System rackeslot6.osadl.org (updated Fri Jul 17, 2026 12:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
123954599150142,5cyclictest1312214-21kworker/u8:1+events_unbound11:30:011
123954499136126,7cyclictest1246116-21kworker/u8:1+events_unbound07:45:250
123954499130119,8cyclictest510-21rs:main0
123954499128118,7cyclictest1290950-21kworker/u8:1+flush-179:010:00:000
123954599127120,5cyclictest1295727-21kworker/u8:2+flush-179:010:10:001
123954599125118,4cyclictest1234939-21kworker/u8:3+flush-179:007:35:251
123954599124115,7cyclictest1343344-21kworker/u8:1+events_unbound12:30:241
123954599124115,7cyclictest1343344-21kworker/u8:1+events_unbound12:30:231
123954599124112,8cyclictest1266882-21kworker/u8:3+flush-179:009:35:221
123954499124113,7cyclictest1246113-21kworker/u8:0+events_unbound07:30:000
123954499123116,5cyclictest1304216-21kworker/u8:1+events_unbound10:45:010
123954499123113,8cyclictest1268437-21latency_hist08:40:000
123954599121114,5cyclictest1337937-21kworker/u8:2+events_unbound12:25:001
123954599121114,5cyclictest1252506-21kworker/u8:2+flush-179:007:50:261
123954599121108,10cyclictest510-21rs:main1
123954599120110,7cyclictest1324891-21kworker/u8:3+flush-179:011:35:191
123954499120111,7cyclictest1304216-21kworker/u8:1+events_unbound10:35:000
123954599119107,9cyclictest1273463-21apt-get08:55:121
123954599119107,9cyclictest1273463-21apt-get08:55:121
123954599118109,6cyclictest1266882-21kworker/u8:3+flush-179:008:45:251
123954499115109,4cyclictest1266882-21kworker/u8:3+flush-179:009:25:240
123954599114105,6cyclictest1283027-21latency_hist09:25:011
123954499114105,6cyclictest1312214-21kworker/u8:1+flush-179:011:25:200
123954499114101,10cyclictest1213033-21systemd-journal08:30:010
123954599113104,6cyclictest1328083-21kworker/u8:0+events_unbound12:10:261
123954599113104,5cyclictest1234939-21kworker/u8:3+events_unbound07:25:151
123954599113103,7cyclictest1290950-21kworker/u8:1+events_unbound10:00:201
123954599113103,7cyclictest1281434-21latency_hist09:20:011
123954499113105,6cyclictest1304227-21latency_hist10:30:010
123954599112104,6cyclictest1270082-21kworker/u8:1+events_unbound08:55:011
123954599111104,4cyclictest1332600-21kworker/u8:1+flush-179:011:55:231
123954599111102,6cyclictest1304216-21kworker/u8:1+events_unbound10:30:161
123954499111105,3cyclictest191rcuc/008:10:010
12395449911095,5cyclictest1321783-21kworker/u8:2+events_unbound11:40:260
123954599109100,6cyclictest1257338-21kworker/u8:3+flush-179:008:10:011
12395449910996,10cyclictest1329692-21latency_hist11:50:010
123954499109103,4cyclictest1310572-21kworker/u8:3+flush-179:011:20:000
123954599108101,5cyclictest1234939-21kworker/u8:3+flush-179:007:20:211
123954599108101,5cyclictest1234939-21kworker/u8:3+flush-179:007:20:201
123954599108100,5cyclictest1234939-21kworker/u8:3+events_unbound07:10:201
123954599107100,5cyclictest1324891-21kworker/u8:3+flush-179:011:45:231
12395449910799,6cyclictest1310572-21kworker/u8:3+events_unbound10:55:000
12395449910798,6cyclictest1328083-21kworker/u8:0+flush-179:012:25:200
12395449910796,7cyclictest1304216-21kworker/u8:1+flush-179:010:45:270
12395459910695,8cyclictest1291495-21latency_hist09:50:011
12395449910699,5cyclictest1321783-21kworker/u8:2+events_unbound11:35:010
12395449910699,5cyclictest1246113-21kworker/u8:0+flush-179:007:30:250
12395449910698,6cyclictest1266882-21kworker/u8:3+flush-179:009:00:010
12395449910698,6cyclictest1266882-21kworker/u8:3+flush-179:009:00:000
12395449910598,5cyclictest1310572-21kworker/u8:3+flush-179:010:55:220
12395449910598,4cyclictest1295727-21kworker/u8:2+flush-179:010:35:200
12395449910596,6cyclictest1270082-21kworker/u8:1+flush-179:009:05:220
12395459910494,7cyclictest1310572-21kworker/u8:3+flush-179:011:05:211
12395459910493,4cyclictest1295727-21kworker/u8:2+flush-179:010:10:261
12395449910496,5cyclictest1266882-21kworker/u8:3+events_unbound09:15:260
12395459910396,5cyclictest1312214-21kworker/u8:1+flush-179:011:00:001
12395459910396,5cyclictest1252506-21kworker/u8:2+events_unbound08:00:001
12395449910395,5cyclictest1328083-21kworker/u8:0+flush-179:012:20:210
12395449910296,4cyclictest1295727-21kworker/u8:2+events_unbound10:05:240
12395459910196,4cyclictest1265232-21kworker/u8:0+flush-179:008:30:291
12395459910195,4cyclictest1307678-21apt-get10:40:111
12395459910194,5cyclictest1328083-21kworker/u8:0+flush-179:011:50:251
12395459910193,6cyclictest1290950-21kworker/u8:1+flush-179:009:55:271
12395459910192,6cyclictest1328083-21kworker/u8:0+flush-179:012:05:141
12395449910195,3cyclictest1266882-21kworker/u8:3+flush-179:009:30:230
12395449910194,5cyclictest1252506-21kworker/u8:2+events_unbound08:20:240
12395459910094,4cyclictest1320108-21kworker/u8:0+events_unbound11:20:201
12395459910091,6cyclictest1270082-21kworker/u8:1+events_unbound09:10:201
1239545999992,5cyclictest1328083-21kworker/u8:0+flush-179:012:15:161
1239544999990,6cyclictest1334730-21latency_hist12:05:010
1239545999892,4cyclictest1299683-21kworker/u8:3+flush-179:010:15:151
1239545999888,7cyclictest1321783-21kworker/u8:2+flush-179:011:40:221
1239544999891,4cyclictest1252506-21kworker/u8:2+flush-179:007:55:160
1239545999790,5cyclictest1252506-21kworker/u8:2+events_unbound08:10:231
1239544999791,4cyclictest1312214-21kworker/u8:1+events_unbound11:00:160
1239544999790,4cyclictest1310572-21kworker/u8:3+flush-179:011:10:180
1239545999691,3cyclictest1290950-21kworker/u8:1+flush-179:009:55:001
1239545999690,4cyclictest1304216-21kworker/u8:1+flush-179:010:35:251
1239544999691,4cyclictest1265232-21kworker/u8:0+events_unbound08:30:270
1239544999688,6cyclictest1262047-21kworker/u8:1+events_unbound08:20:000
1239545999589,4cyclictest1295727-21kworker/u8:2+events_unbound10:25:161
1239544999488,4cyclictest1324891-21kworker/u8:3+flush-179:011:55:160
1239545999386,5cyclictest1283038-21apt-get09:25:021
1239545999385,4cyclictest1341137-21kworker/u8:3+flush-179:012:35:131
1239544999388,3cyclictest191rcuc/008:50:260
1239544999384,6cyclictest1295727-21kworker/u8:2+flush-179:010:10:200
1239544999384,5cyclictest1234939-21kworker/u8:3+flush-179:007:25:020
1239544999384,5cyclictest1234939-21kworker/u8:3+flush-179:007:25:020
1239545999281,8cyclictest1289650-21latency_hist09:45:011
1239544999288,3cyclictest1266882-21kworker/u8:3+flush-179:008:45:240
1239544999285,4cyclictest1282487-21kworker/u8:0+flush-179:009:40:270
1239544999183,6cyclictest1282487-21kworker/u8:0+events_unbound09:50:270
1239544999180,5cyclictest1324891-21kworker/u8:3+events_unbound11:50:020
1239544999085,3cyclictest1290950-21kworker/u8:1+flush-179:010:20:260
1239544999084,4cyclictest1344261-21kworker/u8:2+events_unbound12:35:020
1239544999084,4cyclictest1344261-21kworker/u8:2+events_unbound12:35:020
1239544999078,9cyclictest1247978-21apt-get07:35:120
1239545998982,6cyclictest1252506-21kworker/u8:2+flush-179:008:05:011
1239545998980,6cyclictest1234939-21kworker/u8:3+flush-179:007:15:211
1239545998881,4cyclictest1332600-21kworker/u8:1+events_unbound12:00:251
1239545998876,5cyclictest1252506-21kworker/u8:2+events_unbound08:15:251
1239545998783,3cyclictest1312214-21kworker/u8:1+flush-179:011:10:261
1239545998776,10cyclictest1290950-21kworker/u8:1+flush-179:010:20:271
1239545998775,10cyclictest1213033-21systemd-journal08:25:011
1239544998678,5cyclictest1266882-21kworker/u8:3+events_unbound09:00:150
1239545998579,4cyclictest1312214-21kworker/u8:1+flush-179:011:00:251
1239544998478,5cyclictest1265232-21kworker/u8:0+flush-179:008:40:260
1239544998477,4cyclictest1328083-21kworker/u8:0+flush-179:012:10:260
1239544998476,6cyclictest1321783-21kworker/u8:2+flush-179:011:40:000
1239544998476,5cyclictest1266882-21kworker/u8:3+flush-179:009:35:220
1239545998378,4cyclictest1250917-21kworker/u8:0+flush-179:007:49:561
1239544998375,6cyclictest1320108-21kworker/u8:0+flush-179:011:20:260
1239544998375,6cyclictest1270082-21kworker/u8:1+events_unbound09:10:250
1239545998277,4cyclictest1265232-21kworker/u8:0+flush-179:008:35:251
1239545998274,5cyclictest1342680-21latency_hist12:30:011
1239544998275,5cyclictest1234939-21kworker/u8:3+flush-179:007:40:250
1239545998172,6cyclictest1310595-21latency_hist10:50:011
1239544998176,4cyclictest1252506-21kworker/u8:2+events_unbound08:00:260
1239545998072,5cyclictest1265232-21kworker/u8:0+events_unbound08:40:191
1239544998074,4cyclictest1239136-21kworker/u8:0+flush-179:007:20:000
1239545997871,5cyclictest1312214-21kworker/u8:1+flush-179:011:15:171
1239544997772,3cyclictest1252506-21kworker/u8:2+events_unbound07:50:220
1239545997469,3cyclictest1247705-21kworker/u8:2+flush-179:007:40:161
1239545997468,4cyclictest1266882-21kworker/u8:3+flush-179:009:30:261
1239545997369,3cyclictest1310572-21kworker/u8:3+flush-179:010:50:221
1239545997364,7cyclictest1270082-21kworker/u8:1+flush-179:009:10:011
1239544997366,5cyclictest1332600-21kworker/u8:1+events_unbound12:05:240
1239544997366,5cyclictest1266882-21kworker/u8:3+events_unbound09:20:180
1239544997268,3cyclictest1290950-21kworker/u8:1+flush-179:009:45:260
1239545997165,4cyclictest1246113-21kworker/u8:0+events_unbound07:30:191
1239544997166,4cyclictest1310572-21kworker/u8:3+flush-179:011:05:240
1239544997165,4cyclictest1290950-21kworker/u8:1+flush-179:010:15:230
1239544996554,8cyclictest1344784-21apt-get12:35:100
1239545996458,5cyclictest1252506-21kworker/u8:2+events_unbound08:25:141
1239544996459,3cyclictest1234939-21kworker/u8:3+flush-179:007:10:180
1239544996051,4cyclictest1252506-21kworker/u8:2+events_unbound08:10:140
1239544995750,5cyclictest1296277-21latency_hist10:05:010
1239549995525,2cyclictest0-21swapper/310:33:593
4577091510,14ptp4l441ktimers/307:10:003
1239549995137,12cyclictest1309010-21turbostat10:45:003
1239549995046,2cyclictest0-21swapper/311:31:593
1239545994636,6cyclictest1320108-21kworker/u8:0+flush-179:011:30:131
1239549994038,1cyclictest0-21swapper/310:26:593
1239549993937,1cyclictest0-21swapper/311:52:593
123954999380,1cyclictest0-21swapper/309:09:593
1239546993835,2cyclictest0-21swapper/208:01:592
123954699380,1cyclictest0-21swapper/210:02:582
1239549993735,1cyclictest0-21swapper/307:12:003
123954999370,36cyclictest0-21swapper/310:04:593
123954999370,36cyclictest0-21swapper/308:43:003
1239546993734,2cyclictest0-21swapper/211:29:542
1239546993734,2cyclictest0-21swapper/207:13:592
123954699370,35cyclictest0-21swapper/210:44:592
123954699370,35cyclictest0-21swapper/208:31:592
4577091360,5ptp4l431rcuc/311:24:593
1239549993634,1cyclictest0-21swapper/311:27:593
1239549993634,1cyclictest0-21swapper/311:16:593
1239549993634,1cyclictest0-21swapper/310:20:003
1239549993634,1cyclictest0-21swapper/309:47:583
1239549993633,2cyclictest0-21swapper/307:25:003
1239549993633,2cyclictest0-21swapper/307:25:003
123954999360,35cyclictest0-21swapper/312:35:593
123954999360,35cyclictest0-21swapper/312:29:543
123954999360,35cyclictest0-21swapper/311:09:593
1239546993633,2cyclictest0-21swapper/208:22:592
1239546993633,2cyclictest0-21swapper/208:19:592
123954699360,2cyclictest0-21swapper/210:12:592
123954699360,1cyclictest0-21swapper/212:06:592
1239549993532,2cyclictest0-21swapper/309:21:593
123954999350,1cyclictest0-21swapper/310:38:593
1239546993533,1cyclictest0-21swapper/211:50:002
1239546993533,1cyclictest0-21swapper/207:44:592
1239546993532,2cyclictest0-21swapper/207:46:592
1239546993532,2cyclictest0-21swapper/207:17:592
1239546993432,1cyclictest0-21swapper/208:39:592
1239546993431,2cyclictest0-21swapper/212:33:002
1239546993431,2cyclictest0-21swapper/212:32:592
1239546993431,2cyclictest0-21swapper/210:56:592
1239549993331,1cyclictest0-21swapper/310:46:593
1239546993331,1cyclictest0-21swapper/210:20:002
1239546993330,2cyclictest0-21swapper/209:49:592
1239546993330,2cyclictest0-21swapper/209:31:002
1239549993230,1cyclictest0-21swapper/308:59:003
1239549993230,1cyclictest0-21swapper/308:58:593
1239549993129,1cyclictest0-21swapper/312:06:593
1239549993129,1cyclictest0-21swapper/311:44:553
1239546993129,1cyclictest0-21swapper/212:29:592
1239546993129,1cyclictest0-21swapper/211:55:012
1239546993129,1cyclictest0-21swapper/209:14:592
1239546993128,2cyclictest0-21swapper/211:20:592
1239546993127,2cyclictest0-21swapper/210:20:152
123954699310,2cyclictest0-21swapper/207:53:592
123954699310,29cyclictest0-21swapper/210:50:142
4577091300,7ptp4l441ktimers/308:25:003
1239549993028,1cyclictest0-21swapper/308:13:003
1239549993028,1cyclictest0-21swapper/308:00:583
1239546993027,2cyclictest0-21swapper/209:50:122
1239546993027,2cyclictest0-21swapper/209:01:592
1239546993026,2cyclictest0-21swapper/209:27:592
123954699300,1cyclictest0-21swapper/208:55:002
4577091290,7ptp4l441ktimers/309:05:003
4577091290,6ptp4l441ktimers/308:29:563
1239549992927,1cyclictest0-21swapper/312:35:003
1239549992927,1cyclictest0-21swapper/312:35:003
1239549992926,2cyclictest0-21swapper/311:00:133
1239549992926,2cyclictest0-21swapper/309:40:143
1239549992926,2cyclictest0-21swapper/309:10:143
123954999290,28cyclictest0-21swapper/309:25:133
1239546992927,1cyclictest0-21swapper/212:35:032
1239546992927,1cyclictest0-21swapper/209:05:012
1239546992927,1cyclictest0-21swapper/208:14:592
1239546992926,2cyclictest0-21swapper/211:10:142
1239546992926,2cyclictest0-21swapper/210:05:152
1239546992926,2cyclictest0-21swapper/209:35:132
1239546992926,2cyclictest0-21swapper/208:45:132
1239546992926,2cyclictest0-21swapper/207:31:592
1239546992925,2cyclictest0-21swapper/211:05:592
123954699290,27cyclictest0-21swapper/212:20:132
123954699290,27cyclictest0-21swapper/212:10:142
123954699290,27cyclictest0-21swapper/210:25:142
123954699290,27cyclictest0-21swapper/209:25:012
123954699290,27cyclictest0-21swapper/209:20:002
4577091280,7ptp4l441ktimers/310:10:003
4577091280,6ptp4l441ktimers/310:55:003
4577091280,6ptp4l441ktimers/308:40:003
1239549992826,1cyclictest0-21swapper/312:15:133
1239549992826,1cyclictest0-21swapper/307:45:133
1239549992826,1cyclictest0-21swapper/307:15:013
1239549992825,2cyclictest0-21swapper/308:08:003
123954999280,26cyclictest0-21swapper/308:50:153
123954999280,26cyclictest0-21swapper/307:40:143
123954999280,1cyclictest0-21swapper/309:50:123
1239546992825,2cyclictest0-21swapper/210:36:592
1239546992825,2cyclictest0-21swapper/208:57:592
1239546992825,2cyclictest0-21swapper/208:57:592
123954699280,2cyclictest0-21swapper/212:15:122
123954699280,2cyclictest0-21swapper/209:40:592
123954699280,26cyclictest0-21swapper/211:30:142
123954699280,26cyclictest0-21swapper/208:28:592
1239544992823,3cyclictest0-21swapper/007:10:020
4577091270,6ptp4l61490irq/134-eno1-TxRx-011:59:593
4577091270,6ptp4l61490irq/134-eno1-TxRx-011:49:563
4577091270,6ptp4l441ktimers/310:25:013
1239549992725,1cyclictest0-21swapper/308:30:143
1239549992724,2cyclictest0-21swapper/310:55:143
1239549992724,2cyclictest0-21swapper/309:34:593
123954999270,26cyclictest1281429-21turbostat09:20:003
123954999270,26cyclictest0-21swapper/312:22:593
1239546992724,2cyclictest0-21swapper/209:57:592
123954699270,2cyclictest0-21swapper/211:44:592
123954699270,25cyclictest0-21swapper/212:04:592
4577091260,6ptp4l61490irq/134-eno1-TxRx-011:39:553
4577091260,6ptp4l61490irq/134-eno1-TxRx-007:55:003
4577091260,6ptp4l61490irq/134-eno1-TxRx-007:34:593
4577091260,6ptp4l441ktimers/307:39:563
4577091260,5ptp4l61490irq/134-eno1-TxRx-012:14:553
4577091260,5ptp4l441ktimers/312:05:003
4577091260,5ptp4l441ktimers/308:49:553
123954699260,24cyclictest0-21swapper/211:05:002
4577091250,5ptp4l61490irq/134-eno1-TxRx-009:39:553
4577091250,5ptp4l441ktimers/311:14:563
4577091250,4ptp4l61490irq/134-eno1-TxRx-010:15:003
4577091250,4ptp4l61490irq/134-eno1-TxRx-009:59:553
123954999250,24cyclictest0-21swapper/307:29:583
1239546992522,2cyclictest0-21swapper/211:15:132
1239546992522,2cyclictest0-21swapper/208:09:552
1239546992522,2cyclictest0-21swapper/207:55:142
4577091240,4ptp4l61490irq/134-eno1-TxRx-008:19:553
4577091240,4ptp4l441ktimers/307:59:563
1239546992421,2cyclictest0-21swapper/207:22:002
1239546992421,2cyclictest0-21swapper/207:21:592
1239545992421,2cyclictest1239570-21latency_hist07:10:021
1239546992220,1cyclictest0-21swapper/210:30:592
1239546992219,2cyclictest0-21swapper/207:36:592
1239546992119,1cyclictest0-21swapper/208:42:592
1239546992117,2cyclictest0-21swapper/211:58:592
1239546991915,2cyclictest0-21swapper/207:26:002
1239546991816,1cyclictest0-21swapper/211:39:592
1239546991412,1cyclictest0-21swapper/210:49:592
12395469930,2cyclictest0-21swapper/207:10:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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