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2026-05-26 - 05:22
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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 Tue May 26, 2026 00:44:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
13487349910696,7cyclictest1445509-21latency_hist00:10:010
13487389910291,7cyclictest1437530-21kworker/u8:1+flush-179:000:25:011
13487389910086,10cyclictest1419714-21latency_hist22:50:011
13487349910085,12cyclictest1442302-40mandb00:00:020
1348738999789,6cyclictest1213033-21systemd-journal21:40:001
1348734999788,7cyclictest1389193-21latency_hist21:15:010
1348738999684,9cyclictest510-21rs:main1
1348738999681,12cyclictest1213033-21systemd-journal19:15:001
1348738999482,9cyclictest1348380-21kworker/u8:1+events_unbound19:35:021
1348738999181,7cyclictest1429531-21latency_hist23:20:001
1348738999178,10cyclictest1213033-21systemd-journal20:30:001
1348738999081,6cyclictest1381217-21/usr/sbin/munin20:50:241
1348734999081,7cyclictest1381024-21kworker/u8:0+events_unbound20:55:030
1348738998757,28cyclictest714-21Xorg00:32:581
1348738998473,8cyclictest1213033-21systemd-journal22:25:001
1348734998375,5cyclictest1370605-21kworker/u8:0+events_unbound20:15:260
1348734998276,4cyclictest1-21systemd20:10:000
1348738998171,8cyclictest1353430-21kworker/u8:2+flush-179:020:05:011
1348738998168,10cyclictest1213033-21systemd-journal21:00:011
1348738998151,20cyclictest1395567-21latency_hist21:35:011
1348734998174,5cyclictest1351766-21kworker/u8:0+flush-179:019:40:210
1348734997972,5cyclictest1409950-21kworker/u8:3+flush-179:023:10:190
1348734997872,4cyclictest1409950-21kworker/u8:3+flush-179:022:35:000
1348734997871,4cyclictest1440702-21kworker/u8:2+events_unbound00:00:240
1348738997768,7cyclictest1361868-21apt-get19:50:111
1348738997767,6cyclictest1414674-21latency_hist22:35:011
1348734997768,6cyclictest1411500-21latency_hist22:25:010
1348738997465,7cyclictest1213033-21systemd-journal21:30:001
1348738997363,7cyclictest1408301-21latency_hist22:15:021
1348734997366,5cyclictest1394012-21kworker/u8:1+flush-179:021:30:230
1348734997365,6cyclictest1353430-21kworker/u8:2+flush-179:019:55:240
1348738997263,7cyclictest1439082-21latency_hist23:50:011
1348738997262,7cyclictest1351773-21kworker/u8:3+flush-179:019:20:201
1348734997266,5cyclictest1353430-21kworker/u8:2+events_unbound20:05:010
1348734997266,4cyclictest1397939-21kworker/u8:1+flush-179:022:40:230
1348738997060,8cyclictest1353430-21kworker/u8:2+flush-179:020:00:001
1348734997065,3cyclictest1440702-21kworker/u8:2+flush-179:000:25:240
1348734997060,8cyclictest1348866-21apt-get19:10:100
1348734996960,6cyclictest1353430-21kworker/u8:2+flush-179:020:25:240
1348734996958,7cyclictest1382565-21latency_hist20:55:010
1348734996860,5cyclictest1353430-21kworker/u8:2+events_unbound19:35:130
1348734996859,6cyclictest1431128-21latency_hist23:25:010
1348738996761,5cyclictest1409950-21kworker/u8:3+flush-179:023:20:241
1348738996759,6cyclictest1405129-21latency_hist22:05:011
1348734996762,4cyclictest1381024-21kworker/u8:0+flush-179:021:05:170
1348738996658,5cyclictest1448969-21latency_hist00:20:011
1348734996659,4cyclictest1353395-21latency_hist19:25:020
1348738996444,18cyclictest1368275-21kworker/u8:3+flush-179:020:15:001
1348734996458,4cyclictest1397939-21kworker/u8:1+flush-179:022:10:250
1348734996454,7cyclictest1351814-21latency_hist19:20:010
1348738996355,6cyclictest1377828-21kworker/u8:4+flush-179:020:50:001
1348734996357,4cyclictest1409950-21kworker/u8:3+flush-179:023:30:160
1348738996259,2cyclictest1376175-21kworker/u8:3+events_unbound20:35:011
1348738996153,6cyclictest1348380-21kworker/u8:1+events_unbound19:35:011
1348738996136,22cyclictest1371676-21/usr/sbin/munin20:20:171
1348734996153,6cyclictest1447143-21kworker/u8:3+events_unbound00:20:240
1348734996053,5cyclictest1397939-21kworker/u8:1+flush-179:022:50:140
1348734996053,5cyclictest1395045-21kworker/u8:3+flush-179:021:50:180
1348734996051,7cyclictest1405164-21kworker/u8:2+flush-179:022:20:000
1348734996046,9cyclictest1397939-21kworker/u8:1+flush-179:022:35:100
1348734995954,4cyclictest1416576-21kworker/u8:0+flush-179:023:00:160
1348734995953,5cyclictest1409950-21kworker/u8:3+flush-179:023:15:170
1348734995952,5cyclictest1381024-21kworker/u8:0+events_unbound21:25:130
1348734995948,8cyclictest1381024-21kworker/u8:0+events_unbound21:25:010
1348734995852,4cyclictest1437530-21kworker/u8:1+flush-179:000:15:210
1348734995744,11cyclictest1378064-21apt-get20:40:100
1348734995646,8cyclictest1353430-21kworker/u8:2+flush-179:020:45:200
1348738995446,5cyclictest1390789-21latency_hist21:20:011
1348738995445,6cyclictest1431670-21diskstats23:25:161
1348734995450,3cyclictest1431162-21kworker/u8:0+flush-179:023:40:210
1348734995448,5cyclictest1395045-21kworker/u8:3+flush-179:021:56:300
1348734995448,4cyclictest1397939-21kworker/u8:1+events_unbound22:05:240
1348734995448,4cyclictest1381024-21kworker/u8:0+flush-179:021:00:180
1348738995342,8cyclictest1360026-21latency_hist19:45:011
1348734995348,4cyclictest1409950-21kworker/u8:3+events_unbound23:35:230
1348734995347,5cyclictest1416576-21kworker/u8:0+flush-179:022:45:250
1348734995346,5cyclictest1455325-21latency_hist00:40:010
1348734995246,5cyclictest1409950-21kworker/u8:3+flush-179:023:25:230
1348734995243,5cyclictest1353430-21kworker/u8:2+events_unbound20:40:010
1348738995140,8cyclictest1376453-21apt-get20:35:121
1348734995146,4cyclictest1437530-21kworker/u8:1+events_unbound23:50:210
1348734995146,4cyclictest1353430-21kworker/u8:2+events_unbound20:10:250
1348734995143,6cyclictest1452390-21apt-get00:30:100
1348738995041,7cyclictest1350433-21/usr/sbin/munin19:15:181
1348734995043,5cyclictest1353430-21kworker/u8:2+flush-179:021:15:220
1348734995038,9cyclictest1213033-21systemd-journal23:09:590
1348738994943,4cyclictest1440704-21kworker/u8:4+flush-179:000:04:001
1348738994937,9cyclictest1370605-21kworker/u8:0+events_unbound20:20:001
1348734994944,4cyclictest1437530-21kworker/u8:1+flush-179:023:45:160
4577091480,13ptp4l441ktimers/319:10:013
1348738994838,8cyclictest1399017-21apt-get21:45:121
1348738994742,3cyclictest1416576-21kworker/u8:0+flush-179:023:00:171
1348738994731,15cyclictest0-21swapper/123:37:591
134873899470,44cyclictest0-21swapper/122:55:121
1348738994640,5cyclictest1397939-21kworker/u8:1+flush-179:022:25:211
1348734994641,4cyclictest1405164-21kworker/u8:2+flush-179:022:29:550
1348734994641,4cyclictest1395045-21kworker/u8:3+events_unbound21:40:240
1348738994532,12cyclictest1397939-21kworker/u8:1+flush-179:022:15:201
1348734994539,4cyclictest1353430-21kworker/u8:2+flush-179:019:45:250
1348734994539,4cyclictest1353430-21kworker/u8:2+flush-179:019:45:250
1348738994440,2cyclictest714-21Xorg21:07:591
1348738994435,7cyclictest1437530-21kworker/u8:1+flush-179:000:35:181
1348738994423,19cyclictest1387844-21/usr/sbin/munin21:10:161
1348738994334,7cyclictest1402189-21apt-get21:55:131
134873899431,2cyclictest714-21Xorg22:38:001
1348738994236,5cyclictest1440702-21kworker/u8:2+flush-179:000:10:141
1348734994238,3cyclictest1381024-21kworker/u8:0+flush-179:021:35:260
1348734994236,5cyclictest1351766-21kworker/u8:0+flush-179:019:50:170
1348734994236,4cyclictest1397939-21kworker/u8:1+flush-179:022:55:140
1348734994236,4cyclictest1353430-21kworker/u8:2+flush-179:020:30:160
1348734994235,5cyclictest1371431-21turbostat20:24:550
1348744994134,5cyclictest1440675-21turbostat23:55:013
1348744994038,1cyclictest0-21swapper/322:18:593
134874499400,38cyclictest1406723-21turbostat22:10:003
1348739994037,2cyclictest0-21swapper/219:50:582
1348738994033,5cyclictest484-21dbus-daemon22:50:011
134873899401,37cyclictest714-21Xorg19:28:591
134874499390,3cyclictest1400365-21turbostat21:50:013
1348739993936,2cyclictest0-21swapper/219:14:562
1348738993934,4cyclictest1395045-21kworker/u8:3+flush-179:021:40:151
1348738993927,11cyclictest1440702-21kworker/u8:2+events_unbound00:25:241
1348744993836,1cyclictest0-21swapper/323:58:003
1348744993836,1cyclictest0-21swapper/319:44:563
1348744993831,5cyclictest1363205-21turbostat19:55:003
134873999380,36cyclictest0-21swapper/223:13:582
134873999380,36cyclictest0-21swapper/200:02:592
134873999380,35cyclictest0-21swapper/223:19:542
134873999380,35cyclictest0-21swapper/222:38:592
1348738993835,2cyclictest0-21swapper/123:10:001
1348738993830,6cyclictest1440667-21latency_hist23:55:011
134873499380,37cyclictest0-21swapper/022:01:590
1348744993735,1cyclictest0-21swapper/322:51:593
134874499370,36cyclictest0-21swapper/321:30:593
1348739993734,2cyclictest0-21swapper/223:33:582
1348739993733,2cyclictest0-21swapper/200:09:542
1348738993717,16cyclictest0-21swapper/123:40:141
134873899371,34cyclictest1432970-21apt-get23:30:131
134873899371,31cyclictest908065-21snmpd21:50:121
1348744993634,1cyclictest0-21swapper/319:48:593
1348744993634,1cyclictest0-21swapper/319:48:593
1348744993629,5cyclictest1354999-21turbostat19:29:593
134874499360,35cyclictest0-21swapper/300:33:593
134874499360,1cyclictest0-21swapper/320:44:563
134874499360,1cyclictest0-21swapper/320:20:583
134874499360,1cyclictest0-21swapper/319:11:593
1348739993633,2cyclictest0-21swapper/221:10:592
1348739993633,2cyclictest0-21swapper/219:19:582
1348734993631,4cyclictest1397939-21kworker/u8:1+flush-179:021:45:210
4577091350,12ptp4l441ktimers/319:20:003
1348744993533,1cyclictest0-21swapper/323:13:593
1348744993533,1cyclictest0-21swapper/320:05:583
1348744993533,1cyclictest0-21swapper/300:29:553
1348744993529,4cyclictest1386029-21turbostat21:05:003
134874499350,34cyclictest0-21swapper/320:50:593
1348739993532,2cyclictest0-21swapper/221:24:592
1348739993531,2cyclictest0-21swapper/222:24:552
1348739993531,2cyclictest0-21swapper/220:40:592
134873999350,33cyclictest0-21swapper/219:38:592
134873999350,1cyclictest0-21swapper/221:59:592
134873899353,29cyclictest1348584-21latency_hist19:10:011
1348738993516,17cyclictest0-21swapper/121:20:171
134873899350,9cyclictest1417587-21ntpq22:40:211
1348734993530,3cyclictest1354981-21cron19:29:590
1348734993528,5cyclictest1348584-21latency_hist19:10:020
1348744993432,1cyclictest0-21swapper/322:10:593
1348744993432,1cyclictest0-21swapper/319:59:543
1348739993431,2cyclictest0-21swapper/222:45:592
1348739993430,2cyclictest0-21swapper/220:03:592
1348738993431,2cyclictest0-21swapper/100:09:001
1348738993430,3cyclictest1353430-21kworker/u8:2+flush-179:020:41:001
1348734993428,3cyclictest1356631-21systemd-run19:35:000
1348739993329,2cyclictest0-21swapper/220:19:002
1348738993316,15cyclictest0-21swapper/120:05:161
1348738993315,17cyclictest0-21swapper/121:00:161
1348734993328,4cyclictest1437530-21kworker/u8:1+flush-179:000:10:200
1348744993230,1cyclictest0-21swapper/321:24:553
1348744993229,2cyclictest0-21swapper/321:29:593
1348744993229,2cyclictest0-21swapper/300:04:583
1348739993228,2cyclictest0-21swapper/200:15:592
134873999320,30cyclictest0-21swapper/221:27:592
134873899322,3cyclictest1426599-21apt-get23:10:111
1348744993129,1cyclictest0-21swapper/323:06:593
1348744993129,1cyclictest0-21swapper/319:33:593
1348744993128,2cyclictest0-21swapper/323:44:543
1348739993127,2cyclictest0-21swapper/219:42:592
134873899311,27cyclictest0-21swapper/119:45:131
134873899311,27cyclictest0-21swapper/119:45:121
4577091300,7ptp4l441ktimers/300:40:003
1348744993028,1cyclictest0-21swapper/320:38:593
134874499300,29cyclictest0-21swapper/322:48:593
1348739993027,2cyclictest0-21swapper/222:13:592
1348739993027,2cyclictest0-21swapper/200:39:562
1348739993027,2cyclictest0-21swapper/200:33:592
4577091290,7ptp4l441ktimers/320:35:003
4577091290,7ptp4l441ktimers/320:20:003
1348744992927,1cyclictest0-21swapper/321:40:133
1348744992927,1cyclictest0-21swapper/300:15:033
1348744992926,2cyclictest0-21swapper/320:55:143
1348744992926,2cyclictest0-21swapper/320:10:143
1348744992926,2cyclictest0-21swapper/320:05:013
1348744992924,3cyclictest1389210-21turbostat21:15:003
134874499290,2cyclictest0-21swapper/320:25:153
1348739992927,1cyclictest0-21swapper/221:09:592
1348739992926,2cyclictest0-21swapper/223:59:562
1348739992926,2cyclictest0-21swapper/220:25:152
134873999290,2cyclictest0-21swapper/223:40:132
134873999290,2cyclictest0-21swapper/221:42:592
134873999290,2cyclictest0-21swapper/220:55:132
134873999290,28cyclictest0-21swapper/221:50:132
134873999290,27cyclictest0-21swapper/222:55:112
134873999290,27cyclictest0-21swapper/222:50:022
134873999290,27cyclictest0-21swapper/222:27:592
134873999290,27cyclictest0-21swapper/219:55:132
134873999290,27cyclictest0-21swapper/219:20:122
134873999290,1cyclictest0-21swapper/223:50:122
134873899291,3cyclictest0-21swapper/122:05:111
4577091280,6ptp4l61490irq/134-eno1-TxRx-021:55:003
4577091280,6ptp4l441ktimers/323:20:013
4577091280,6ptp4l441ktimers/322:05:003
1348744992826,1cyclictest0-21swapper/321:55:133
1348744992825,2cyclictest0-21swapper/320:45:143
134874499280,27cyclictest0-21swapper/323:35:123
134874499280,27cyclictest0-21swapper/322:40:143
134874499280,27cyclictest0-21swapper/300:05:143
134874499280,26cyclictest0-21swapper/322:35:033
1348739992826,1cyclictest0-21swapper/221:17:592
1348739992825,2cyclictest0-21swapper/220:45:132
1348739992825,2cyclictest0-21swapper/220:33:592
1348739992825,2cyclictest0-21swapper/219:30:592
1348739992825,2cyclictest0-21swapper/219:25:152
134873999280,26cyclictest0-21swapper/222:18:592
4577091270,7ptp4l441ktimers/323:34:563
4577091270,6ptp4l61490irq/134-eno1-TxRx-022:30:003
4577091270,6ptp4l61490irq/134-eno1-TxRx-000:24:593
4577091270,6ptp4l441ktimers/319:40:013
4577091270,6ptp4l441ktimers/300:15:013
1348744992725,1cyclictest0-21swapper/321:05:133
1348744992724,2cyclictest4577091ptp4l21:35:163
1348744992724,2cyclictest0-21swapper/323:49:583
1348744992723,2cyclictest0-21swapper/323:02:593
1348739992725,1cyclictest0-21swapper/222:34:592
1348739992724,2cyclictest0-21swapper/223:23:002
134873999270,25cyclictest0-21swapper/221:35:132
4577091260,5ptp4l61490irq/134-eno1-TxRx-021:19:553
4577091260,5ptp4l441ktimers/323:30:003
4577091260,5ptp4l441ktimers/322:59:563
1348744992623,2cyclictest0-21swapper/323:25:003
134874499260,2cyclictest0-21swapper/319:21:593
1348739992623,2cyclictest0-21swapper/221:45:592
1348739992623,2cyclictest0-21swapper/221:31:592
1348739992623,2cyclictest0-21swapper/200:26:592
4577091250,5ptp4l441ktimers/322:35:003
1348744992523,1cyclictest0-21swapper/322:23:003
1348739992522,2cyclictest0-21swapper/220:11:592
1348739992522,2cyclictest0-21swapper/200:14:002
134873999250,2cyclictest0-21swapper/219:45:132
134873999250,2cyclictest0-21swapper/219:45:122
1348739992422,1cyclictest0-21swapper/200:24:592
1348739992421,2cyclictest0-21swapper/220:55:022
1348739992321,1cyclictest0-21swapper/222:02:582
1348739992219,2cyclictest0-21swapper/223:01:592
1348739992118,2cyclictest0-21swapper/223:27:002
1348739992018,1cyclictest0-21swapper/223:09:002
1348739991916,2cyclictest0-21swapper/220:09:552
1348739991815,2cyclictest0-21swapper/223:37:002
1348739991815,2cyclictest0-21swapper/222:09:002
1348739991613,2cyclictest0-21swapper/223:45:582
1348739991513,1cyclictest0-21swapper/222:44:592
134873999107,2cyclictest0-21swapper/220:35:592
134873999107,2cyclictest0-21swapper/220:22:592
13487399970,6cyclictest0-21swapper/221:00:262
13487399930,2cyclictest0-21swapper/219:10:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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