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2026-05-27 - 19:31
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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 Wed May 27, 2026 12:44:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
124278799126105,18cyclictest1286067-21latency_hist09:25:021
124278799122107,10cyclictest1213033-21systemd-journal08:00:001
124278399115105,6cyclictest1334809-21kworker/u8:0+events_unbound12:00:010
124278799110100,8cyclictest1213033-21systemd-journal09:34:591
124278799108100,6cyclictest1257150-21latency_hist07:55:021
12427879910596,7cyclictest1274661-21latency_hist08:50:011
12427839910597,5cyclictest1305408-21kworker/u8:1+flush-179:010:40:020
12427879910189,9cyclictest1213033-21systemd-journal12:30:001
12427879910091,6cyclictest1252381-21latency_hist07:40:011
1242787999991,5cyclictest1329557-21latency_hist11:40:011
1242783999588,5cyclictest1300676-21kworker/u8:3+events_unbound10:10:210
1242783999580,11cyclictest1308604-21apt-get10:35:000
1242787999484,7cyclictest1268297-21latency_hist08:30:011
1242783999387,4cyclictest1313666-21kworker/u8:2+events_unbound10:50:000
1242783999379,10cyclictest1213033-21systemd-journal08:15:000
1242787999286,4cyclictest1294310-21kworker/u8:0+flush-179:009:55:251
1242787999084,4cyclictest1312028-21kworker/u8:0+events_unbound11:05:011
1242787998882,4cyclictest1245312-21kworker/u8:1+flush-179:009:45:151
1242783998882,4cyclictest1245312-21kworker/u8:1+flush-179:007:55:260
1242787998782,4cyclictest1305408-21kworker/u8:1+flush-179:010:35:011
1242787998779,6cyclictest1327930-21kworker/u8:2+events_unbound12:35:001
1242787998681,4cyclictest1242731-21kworker/u8:2+flush-179:007:15:141
1242787998668,15cyclictest1289735-21kworker/u8:2+flush-179:010:00:111
1242787998579,5cyclictest1312028-21kworker/u8:0+events_unbound11:15:001
1242787998479,3cyclictest1294310-21kworker/u8:0+events_unbound10:25:241
1242787998476,6cyclictest1327930-21kworker/u8:2+flush-179:011:55:241
1242787998276,4cyclictest1342804-21apt-get12:20:111
1242787998272,7cyclictest1287913-21latency_hist09:30:011
1242787998270,9cyclictest1213033-21systemd-journal10:10:001
1242783998273,6cyclictest1312028-21kworker/u8:0+flush-179:010:55:260
1242787998072,6cyclictest1300676-21kworker/u8:3+flush-179:010:20:211
1242787998071,5cyclictest1294310-21kworker/u8:0+flush-179:010:15:231
1242787997974,4cyclictest1258793-21kworker/u8:2+flush-179:008:14:561
1242783997872,4cyclictest1269878-21kworker/u8:2+flush-179:008:35:160
1242783997872,4cyclictest1269878-21kworker/u8:2+flush-179:008:35:160
1242783997871,4cyclictest1245312-21kworker/u8:1+flush-179:007:50:010
1242787997771,4cyclictest1245312-21kworker/u8:1+flush-179:009:50:241
1242787997767,9cyclictest1245312-21kworker/u8:1+flush-179:009:39:551
1242783997767,7cyclictest1276248-21latency_hist08:55:010
1242783997767,7cyclictest1250689-21latency_hist07:35:010
1242783997667,6cyclictest1312046-21latency_hist10:45:010
1242787997568,5cyclictest1312301-21apt-get10:45:101
1242783997567,5cyclictest1312028-21kworker/u8:0+flush-179:011:20:200
1242787997468,4cyclictest584833-21kworker/u8:0+flush-179:007:20:141
1242787997468,4cyclictest1282907-21kworker/u8:2+flush-179:009:15:241
1242787997465,7cyclictest1245312-21kworker/u8:1+flush-179:008:15:201
1242787997463,9cyclictest1318667-21apt-get11:05:091
1242783997468,5cyclictest1263750-21kworker/u8:0+flush-179:008:25:230
1242783997467,5cyclictest1269885-21latency_hist08:35:010
1242783997464,7cyclictest1339355-21latency_hist12:10:010
1242787997368,4cyclictest1294310-21kworker/u8:0+flush-179:010:15:011
1242787997368,4cyclictest1245312-21kworker/u8:1+flush-179:008:05:251
1242787997367,4cyclictest1305408-21kworker/u8:1+flush-179:010:40:221
1242787997366,5cyclictest1319073-21kworker/u8:1+flush-179:011:25:001
1242783997364,6cyclictest1289735-21kworker/u8:2+flush-179:010:00:220
1242783997364,5cyclictest1334809-21kworker/u8:0+flush-179:012:00:200
1242787997267,4cyclictest1258793-21kworker/u8:2+flush-179:008:05:011
1242783997268,2cyclictest1269878-21kworker/u8:2+flush-179:008:45:210
1242783997265,5cyclictest1245312-21kworker/u8:1+flush-179:007:40:210
1242783997262,8cyclictest1213033-21systemd-journal10:25:010
1242783997260,10cyclictest1213033-21systemd-journal11:55:010
1242787997166,4cyclictest1266745-21kworker/u8:3+flush-179:008:34:561
1242787997165,4cyclictest1269878-21kworker/u8:2+flush-179:008:55:161
1242787997066,3cyclictest1327930-21kworker/u8:2+flush-179:012:15:001
1242787997061,6cyclictest1337747-21kworker/u8:1+events_unbound12:05:201
1242783997063,4cyclictest1327930-21kworker/u8:2+events_unbound12:15:150
1242787996964,4cyclictest1327930-21kworker/u8:2+flush-179:012:19:551
1242787996964,3cyclictest1245312-21kworker/u8:1+flush-179:009:10:161
1242787996962,5cyclictest1334809-21kworker/u8:0+flush-179:012:00:131
1242787996864,3cyclictest1324812-21kworker/u8:3+flush-179:011:54:551
124278799680,66cyclictest714-21Xorg10:57:591
1242783996864,2cyclictest714-21Xorg07:16:590
1242783996858,8cyclictest1286580-21apt-get09:25:130
1242787996762,4cyclictest1324812-21kworker/u8:3+flush-179:011:44:561
1242787996762,3cyclictest1327930-21kworker/u8:2+flush-179:011:45:011
1242783996760,5cyclictest1252314-21gzip07:38:220
1242783996758,5cyclictest1269878-21kworker/u8:2+flush-179:008:55:170
1242787996657,6cyclictest1279701-21latency_hist09:05:021
1242787996656,8cyclictest1319073-21kworker/u8:1+flush-179:011:20:001
1242783996660,5cyclictest1294310-21kworker/u8:0+flush-179:010:29:320
1242787996459,4cyclictest1266745-21kworker/u8:3+flush-179:008:35:251
1242787996459,4cyclictest1266745-21kworker/u8:3+flush-179:008:35:241
1242783996457,5cyclictest1277038-21kworker/u8:3+flush-179:009:00:160
1242783996456,6cyclictest1213033-21systemd-journal12:34:480
124278399640,63cyclictest0-21swapper/011:41:590
1242783996360,2cyclictest0-21swapper/012:13:590
1242783996355,5cyclictest1327930-21kworker/u8:2+events_unbound11:45:020
1242783996354,7cyclictest1348897-21apt-get12:40:000
1242783996354,7cyclictest1297459-21latency_hist10:00:000
1242783996157,3cyclictest1213033-21systemd-journal09:10:320
1242783996153,6cyclictest1312028-21kworker/u8:0+events_unbound11:15:220
1242783996053,5cyclictest1319073-21kworker/u8:1+events_unbound11:30:150
1242783996051,7cyclictest1245312-21kworker/u8:1+flush-179:009:40:110
1242787995954,4cyclictest1337747-21kworker/u8:1+flush-179:012:39:551
1242787995954,4cyclictest1269878-21kworker/u8:2+flush-179:008:40:211
1242787995954,4cyclictest1245312-21kworker/u8:1+flush-179:007:49:551
1242787995954,4cyclictest1242731-21kworker/u8:2+flush-179:007:14:551
1242787995954,3cyclictest584833-21kworker/u8:0+flush-179:007:25:171
1242787995954,3cyclictest584833-21kworker/u8:0+flush-179:007:25:171
1242787995851,4cyclictest1245312-21kworker/u8:1+events_unbound07:30:141
1242783995852,4cyclictest1327930-21kworker/u8:2+events_unbound12:25:010
1242783995852,4cyclictest1245312-21kworker/u8:1+events_unbound09:35:000
1242787995752,4cyclictest1263750-21kworker/u8:0+flush-179:008:24:541
1242787995750,6cyclictest1245312-21kworker/u8:1+flush-179:007:40:261
1242783995749,7cyclictest1245312-21kworker/u8:1+flush-179:008:05:210
1242783995652,3cyclictest1245312-21kworker/u8:1+flush-179:009:54:330
1242787995548,5cyclictest1312028-21kworker/u8:0+flush-179:010:55:011
1242783995550,4cyclictest1263750-21kworker/u8:0+events_unbound08:20:230
1242783995548,6cyclictest1291067-21kworker/u8:3+events_unbound09:40:000
1242783995548,5cyclictest1312028-21kworker/u8:0+flush-179:011:25:230
1242783995548,5cyclictest1245312-21kworker/u8:1+events_unbound08:15:150
1242783995348,3cyclictest1247772-21apt-get07:25:120
1242783995348,3cyclictest1247772-21apt-get07:25:120
1242783995246,4cyclictest1327927-21kworker/u8:0+events_unbound11:35:150
1242783995246,4cyclictest1282907-21kworker/u8:2+flush-179:009:20:150
1242787995141,8cyclictest1213033-21systemd-journal11:34:411
1242783995144,6cyclictest584833-21kworker/u8:0+flush-179:007:10:230
1242783995143,6cyclictest1299311-21apt-get10:05:100
1242783995141,8cyclictest1313887-21apt-get10:50:090
1242787995044,4cyclictest1245312-21kworker/u8:1+events_unbound09:40:131
4577091490,13ptp4l441ktimers/307:09:553
1242787994944,4cyclictest1319073-21kworker/u8:1+events_unbound11:25:201
1242783994944,4cyclictest1279736-21kworker/u8:0+events_unbound09:10:010
1242783994943,5cyclictest1245312-21kworker/u8:1+events_unbound09:45:240
1242783994942,6cyclictest584833-21kworker/u8:0+events_unbound07:20:150
1242787994837,6cyclictest0-21swapper/109:05:591
1242783994638,6cyclictest1345720-21latency_hist12:30:000
1242787994540,4cyclictest1269878-21kworker/u8:2+events_unbound08:50:141
1242783994437,5cyclictest1302743-21expr10:15:130
124279399420,41cyclictest0-21swapper/310:53:593
124279399420,41cyclictest0-21swapper/310:23:003
1242783994237,4cyclictest1312028-21kworker/u8:0+flush-179:011:05:130
1242783994237,4cyclictest1245312-21kworker/u8:1+flush-179:008:00:210
1242783994235,6cyclictest1283127-21apt-get09:15:110
1242783994234,6cyclictest1254014-21kworker/u8:3+flush-179:007:50:210
1242793994139,1cyclictest0-21swapper/311:27:593
1242789994037,2cyclictest0-21swapper/210:21:582
1242789994037,2cyclictest0-21swapper/209:50:592
1242793993933,4cyclictest1340941-21turbostat12:15:003
1242789993835,2cyclictest0-21swapper/209:13:002
1242789993835,2cyclictest0-21swapper/208:57:002
124278999380,35cyclictest0-21swapper/210:28:002
124278999380,35cyclictest0-21swapper/210:03:582
1242787993835,2cyclictest0-21swapper/110:39:591
1242783993828,8cyclictest1213033-21systemd-journal11:00:190
1242793993734,2cyclictest0-21swapper/307:22:593
124279399370,36cyclictest0-21swapper/309:05:593
1242789993734,2cyclictest0-21swapper/208:48:582
1242789993734,2cyclictest0-21swapper/207:52:592
124278999370,35cyclictest0-21swapper/211:40:592
124278999370,35cyclictest0-21swapper/210:17:592
124278999370,35cyclictest0-21swapper/207:42:592
124278999370,35cyclictest0-21swapper/207:11:582
124278999370,1cyclictest0-21swapper/208:53:592
1242783993732,4cyclictest1312028-21kworker/u8:0+flush-179:011:10:210
1242793993634,1cyclictest0-21swapper/308:01:593
1242793993633,2cyclictest0-21swapper/308:24:553
124279399360,35cyclictest0-21swapper/309:37:593
124279399360,35cyclictest0-21swapper/308:19:563
124279399360,35cyclictest0-21swapper/308:10:003
124279399360,1cyclictest0-21swapper/309:44:003
1242789993633,2cyclictest0-21swapper/211:47:592
1242789993633,2cyclictest0-21swapper/211:26:592
1242789993633,2cyclictest0-21swapper/210:56:592
1242789993633,2cyclictest0-21swapper/207:26:002
1242789993633,2cyclictest0-21swapper/207:26:002
124278999360,1cyclictest0-21swapper/212:29:562
124278999360,1cyclictest0-21swapper/211:34:592
124278999360,1cyclictest0-21swapper/210:39:592
124278999360,1cyclictest0-21swapper/208:28:002
124278999360,1cyclictest0-21swapper/207:22:592
1242793993533,1cyclictest0-21swapper/310:44:553
1242793993533,1cyclictest0-21swapper/308:14:583
124279399350,1cyclictest0-21swapper/312:07:003
124279399350,1cyclictest0-21swapper/307:58:593
1242789993533,1cyclictest0-21swapper/207:50:012
124278999350,1cyclictest0-21swapper/212:03:592
1242783993529,5cyclictest1273090-21ls08:44:590
1242793993431,2cyclictest0-21swapper/312:32:593
1242789993432,1cyclictest0-21swapper/211:20:002
1242789993431,2cyclictest0-21swapper/210:40:592
124278999340,2cyclictest0-21swapper/211:36:592
4577091330,5ptp4l441ktimers/308:30:003
1242793993331,1cyclictest0-21swapper/311:18:593
1242793993331,1cyclictest0-21swapper/309:47:003
1242793993331,1cyclictest0-21swapper/308:29:583
1242789993330,2cyclictest0-21swapper/212:23:002
1242789993330,2cyclictest0-21swapper/210:49:592
1242789993330,2cyclictest0-21swapper/209:04:562
1242793993230,1cyclictest0-21swapper/311:49:553
1242793993230,1cyclictest0-21swapper/310:39:553
1242789993229,2cyclictest0-21swapper/212:08:592
1242789993229,2cyclictest0-21swapper/210:14:592
1242789993229,2cyclictest0-21swapper/209:59:552
1242789993229,2cyclictest0-21swapper/209:43:592
1242789993128,2cyclictest0-21swapper/208:37:592
1242789993128,2cyclictest0-21swapper/208:37:582
124278999310,29cyclictest0-21swapper/211:06:582
1242793993028,1cyclictest0-21swapper/309:56:593
1242793993027,2cyclictest0-21swapper/311:55:593
1242789993027,2cyclictest0-21swapper/211:20:592
124278999300,28cyclictest0-21swapper/212:10:122
4577091290,7ptp4l441ktimers/307:30:003
4577091290,7ptp4l441ktimers/307:30:003
124279399290,28cyclictest0-21swapper/309:50:123
124279399290,28cyclictest0-21swapper/308:55:013
124279399290,27cyclictest0-21swapper/311:35:123
124279399290,27cyclictest0-21swapper/307:35:123
1242789992926,2cyclictest0-21swapper/211:50:122
124278999290,27cyclictest0-21swapper/212:35:122
124278999290,27cyclictest0-21swapper/212:15:112
124278999290,27cyclictest0-21swapper/210:05:122
124278999290,27cyclictest0-21swapper/209:45:112
124278999290,27cyclictest0-21swapper/209:15:132
4577091280,7ptp4l61490irq/134-eno1-TxRx-009:24:553
4577091280,6ptp4l61490irq/134-eno1-TxRx-010:15:003
1242793992825,2cyclictest0-21swapper/311:50:123
1242793992825,2cyclictest0-21swapper/308:35:143
1242793992825,2cyclictest0-21swapper/308:35:143
124279399280,2cyclictest0-21swapper/307:50:123
124279399280,27cyclictest0-21swapper/309:00:133
124279399280,26cyclictest0-21swapper/312:25:133
124279399280,26cyclictest0-21swapper/310:45:123
124279399280,26cyclictest0-21swapper/309:30:123
124279399280,26cyclictest0-21swapper/309:25:033
124279399280,26cyclictest0-21swapper/309:15:123
1242789992825,2cyclictest0-21swapper/210:50:112
124278999280,2cyclictest0-21swapper/208:00:122
124278999280,26cyclictest0-21swapper/212:30:132
4577091270,6ptp4l441ktimers/311:35:013
4577091270,6ptp4l441ktimers/311:05:003
4577091270,6ptp4l441ktimers/310:35:003
4577091270,6ptp4l441ktimers/310:30:003
4577091270,6ptp4l441ktimers/310:10:003
4577091270,6ptp4l441ktimers/307:20:013
4577091270,5ptp4l441ktimers/310:20:003
1242793992725,1cyclictest0-21swapper/311:05:103
1242793992725,1cyclictest0-21swapper/308:50:133
1242793992725,1cyclictest0-21swapper/308:45:123
124279399270,26cyclictest0-21swapper/312:24:003
124279399270,26cyclictest0-21swapper/311:45:013
124279399270,26cyclictest0-21swapper/307:41:003
1242789992724,2cyclictest0-21swapper/211:12:592
1242789992724,2cyclictest0-21swapper/208:14:562
1242789992723,2cyclictest0-21swapper/210:31:592
124278999270,24cyclictest0-21swapper/209:27:592
4577091260,6ptp4l61490irq/134-eno1-TxRx-012:40:003
4577091260,6ptp4l61490irq/134-eno1-TxRx-011:25:003
4577091260,5ptp4l441ktimers/310:59:563
4577091260,5ptp4l441ktimers/307:14:553
1242793992624,1cyclictest0-21swapper/309:13:003
1242793992624,1cyclictest0-21swapper/307:48:593
124279399260,25cyclictest0-21swapper/307:34:593
124278999260,2cyclictest0-21swapper/208:42:002
124278999260,2cyclictest0-21swapper/207:36:592
124278999260,24cyclictest0-21swapper/209:35:112
124278999260,24cyclictest0-21swapper/209:07:582
4577091250,5ptp4l61490irq/134-eno1-TxRx-010:05:013
4577091250,5ptp4l441ktimers/312:04:563
4577091250,4ptp4l441ktimers/312:20:013
124279399250,24cyclictest0-21swapper/308:44:593
1242789992522,2cyclictest0-21swapper/208:10:012
124278999250,2cyclictest0-21swapper/207:32:592
4577091240,4ptp4l441ktimers/311:14:563
1242789992421,2cyclictest0-21swapper/207:58:592
1242789992320,2cyclictest0-21swapper/207:16:592
1242789992219,2cyclictest0-21swapper/208:34:562
1242789992118,2cyclictest0-21swapper/211:57:592
1242783992110,4cyclictest1241389-21kworker/u8:1+events_unbound07:10:000
1242787992016,3cyclictest0-21swapper/107:10:011
1242789991714,2cyclictest0-21swapper/211:04:562
1242789991713,2cyclictest0-21swapper/209:34:562
1242789991614,1cyclictest0-21swapper/209:21:582
124278999140,13cyclictest0-21swapper/207:10:012
1242789991311,1cyclictest0-21swapper/208:15:582
124278999100,9cyclictest0-21swapper/208:25:002
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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