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2026-05-21 - 08:24
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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 Thu May 21, 2026 00:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
12694999110100,7cyclictest131698-21latency_hist19:25:010
12694999110100,7cyclictest131698-21latency_hist19:25:000
1269509910293,6cyclictest154036-21latency_hist20:35:011
1269499910189,9cyclictest178187-21latency_hist21:50:010
126949999989,7cyclictest1213033-21systemd-journal20:25:000
126949999891,5cyclictest212138-21kworker/u8:2+flush-179:000:20:200
126949999891,5cyclictest212138-21kworker/u8:2+flush-179:000:20:190
126949999685,7cyclictest223618-21latency_hist00:10:000
126949998979,7cyclictest139656-21latency_hist19:50:000
126950998678,5cyclictest210556-21latency_hist23:30:001
126949998674,9cyclictest163615-21apt-get21:05:020
126950998572,10cyclictest183514-21diskstats22:05:151
126949998572,11cyclictest202394-21kworker/u8:3+flush-179:023:35:240
126950998275,5cyclictest134874-21latency_hist19:35:011
126950998273,7cyclictest213738-21latency_hist23:40:011
12694999820,78cyclictest221986-21systemd00:04:000
126949997972,4cyclictest144474-21kworker/u8:0+flush-179:020:05:240
126949997970,7cyclictest1213033-21systemd-journal23:54:550
126950997769,6cyclictest128499-21latency_hist19:15:001
126950997665,9cyclictest155901-21apt-get20:40:111
126950997562,11cyclictest1213033-21systemd-journal00:04:591
126950997464,7cyclictest195968-21latency_hist22:45:011
126949997368,3cyclictest122134-21kworker/u8:3+flush-179:019:10:200
126949997366,4cyclictest202394-21kworker/u8:3+flush-179:023:40:250
126949997263,7cyclictest170218-21kworker/u8:0+flush-179:021:45:010
126949997260,7cyclictest170218-21kworker/u8:0+flush-179:022:00:220
126950997160,9cyclictest192530-21apt-get22:34:591
126949997167,3cyclictest134853-21kworker/u8:3+events_unbound19:50:140
126949997161,7cyclictest170218-21kworker/u8:0+flush-179:021:30:260
126949997161,7cyclictest170218-21kworker/u8:0+flush-179:021:30:260
126949997161,7cyclictest160403-21latency_hist20:55:010
126950996961,6cyclictest186398-21apt-get22:15:111
126950996960,7cyclictest197811-21apt-get22:50:101
126949996960,5cyclictest170218-21kworker/u8:0+events_unbound21:25:120
126949996940,10cyclictest1213033-21systemd-journal19:20:000
126949996856,9cyclictest202394-21kworker/u8:3+events_unbound23:20:200
126950996758,7cyclictest136489-21latency_hist19:40:011
126950996754,10cyclictest202349-21apt-get23:05:001
126950996749,16cyclictest146335-21apt-get20:10:111
126949996759,5cyclictest182947-21kworker/u8:3+flush-179:022:35:000
126949996755,9cyclictest162453-21kworker/u8:1+flush-179:021:10:210
126950996660,4cyclictest167291-21apt-get21:15:121
126949996556,6cyclictest223627-21kworker/u8:1+flush-179:000:10:200
126952996462,1cyclictest0-21swapper/319:12:583
126950996356,5cyclictest215339-21latency_hist23:45:001
126949996354,6cyclictest144474-21kworker/u8:0+flush-179:021:00:230
126952996259,2cyclictest0-21swapper/319:56:593
126949996258,2cyclictest202394-21kworker/u8:3+events_unbound23:05:020
126950996153,6cyclictest170232-21latency_hist21:25:011
126949996154,5cyclictest196004-21kworker/u8:1+flush-179:023:00:170
126949996153,5cyclictest202394-21kworker/u8:3+events_unbound23:30:150
126949996050,6cyclictest154024-21kworker/u8:2+events_unbound20:45:230
126949996045,8cyclictest150349-21kworker/u8:1+events_unbound20:35:140
126950995954,4cyclictest196004-21kworker/u8:1+flush-179:023:19:561
126950995951,6cyclictest220425-21kworker/u8:3+flush-179:000:00:021
126950995948,9cyclictest176384-21kworker/u8:1+flush-179:022:10:211
126949995952,5cyclictest182947-21kworker/u8:3+events_unbound22:40:140
126949995952,5cyclictest144474-21kworker/u8:0+flush-179:020:40:290
126949995942,12cyclictest223627-21kworker/u8:1+events_unbound00:25:150
126950995849,7cyclictest175253-21/usr/sbin/munin21:40:241
126950995849,6cyclictest152447-21latency_hist20:30:011
126949995852,5cyclictest150349-21kworker/u8:1+flush-179:020:30:240
126949995850,5cyclictest175018-21latency_hist21:40:010
126949995847,9cyclictest204442-21apt-get23:10:110
126950995748,7cyclictest170218-21kworker/u8:0+flush-179:021:25:241
126950995748,6cyclictest141241-21latency_hist19:55:001
126949995749,5cyclictest196004-21kworker/u8:1+events_unbound23:25:140
126949995749,5cyclictest167012-21kworker/u8:2+flush-179:021:20:210
126949995748,6cyclictest176384-21kworker/u8:1+flush-179:021:50:180
126949995746,8cyclictest212121-21kworker/u8:1+flush-179:023:55:160
126949995649,5cyclictest212138-21kworker/u8:2+flush-179:023:45:210
126949995643,9cyclictest170218-21kworker/u8:0+events_unbound21:55:190
126949995643,9cyclictest170218-21kworker/u8:0+events_unbound21:55:190
126950995551,2cyclictest170218-21kworker/u8:0+events_unbound21:35:271
126950995548,5cyclictest170218-21kworker/u8:0+flush-179:021:55:161
126950995548,5cyclictest170218-21kworker/u8:0+flush-179:021:55:161
126949995552,2cyclictest138053-21kworker/u8:2+events_unbound20:00:240
126949995548,5cyclictest162453-21kworker/u8:1+flush-179:021:15:210
126952995452,1cyclictest0-21swapper/321:44:593
126950995446,6cyclictest184590-21kworker/u8:2+flush-179:022:25:261
126950995443,9cyclictest216939-21apt-get23:50:001
126949995447,4cyclictest138053-21kworker/u8:2+flush-179:019:58:570
126949995446,6cyclictest184590-21kworker/u8:2+flush-179:022:25:260
126949995345,6cyclictest196226-21apt-get22:45:110
126949995245,5cyclictest226849-21kworker/u8:0+flush-179:000:30:240
126949995245,5cyclictest134853-21kworker/u8:3+flush-179:019:35:170
126949995241,9cyclictest150854-21kworker/u8:3+flush-179:020:25:200
126950995146,4cyclictest212138-21kworker/u8:2+flush-179:000:09:591
126950995145,4cyclictest162453-21kworker/u8:1+flush-179:021:15:001
126950995144,5cyclictest225204-21latency_hist00:15:011
126950995136,13cyclictest144474-21kworker/u8:0+flush-179:020:15:171
126949995146,4cyclictest220425-21kworker/u8:3+flush-179:000:15:210
126949995145,4cyclictest134853-21kworker/u8:3+events_unbound19:45:000
126949995142,7cyclictest186140-21latency_hist22:15:010
126949995142,6cyclictest190909-21kworker/u8:0+events_unbound22:35:250
126950995042,6cyclictest182947-21kworker/u8:3+flush-179:022:40:001
126950995041,6cyclictest202394-21kworker/u8:3+flush-179:023:10:221
126949995044,5cyclictest176384-21kworker/u8:1+flush-179:022:20:150
126949995043,5cyclictest190909-21kworker/u8:0+flush-179:022:50:210
126949995041,6cyclictest196004-21kworker/u8:1+flush-179:023:15:180
126950994911,28cyclictest144705-21latency_hist20:05:011
4577091480,13ptp4l61490irq/134-eno1-TxRx-019:10:013
4577091480,13ptp4l61490irq/134-eno1-TxRx-019:10:013
126949994845,2cyclictest199121-21kworker/u8:2+events_unbound22:55:170
126949994742,4cyclictest170218-21kworker/u8:0+flush-179:022:05:260
126949994738,7cyclictest231613-21kworker/u8:2+flush-179:000:35:250
126949994639,5cyclictest134853-21kworker/u8:3+flush-179:020:10:210
126950994437,5cyclictest141499-21apt-get19:55:111
126950994437,5cyclictest126866-21latency_hist19:10:021
126950994437,5cyclictest126866-21latency_hist19:10:011
126950994436,6cyclictest199397-21apt-get22:55:111
126950994434,8cyclictest176859-21apt-get21:45:111
126950994433,9cyclictest129045-21diskstats19:15:151
12695099441,6cyclictest165444-21cron21:10:001
126949994441,2cyclictest182947-21kworker/u8:3+events_unbound22:15:140
126949994439,4cyclictest144474-21kworker/u8:0+events_unbound20:55:200
126949994438,4cyclictest131676-21kworker/u8:0+events_unbound19:30:120
12695099432,39cyclictest216938-21turbostat23:54:561
126952994240,1cyclictest0-21swapper/320:20:593
126952994240,1cyclictest0-21swapper/300:09:583
126950994237,4cyclictest202349-21apt-get23:05:021
12694999421,2cyclictest0-21swapper/020:18:590
126950994137,2cyclictest210813-21apt-get23:30:131
126950994136,3cyclictest139658-21sh19:50:001
126950994130,8cyclictest0-21swapper/121:50:121
12695099411,36cyclictest159809-21ntp_192.168.11420:50:171
12695299400,38cyclictest182977-21turbostat22:05:003
12695299400,38cyclictest178200-21turbostat21:50:003
12695299400,38cyclictest160417-21turbostat20:55:003
126951994037,2cyclictest0-21swapper/221:41:592
126950994028,11cyclictest134853-21kworker/u8:3+flush-179:020:08:531
126952993934,4cyclictest192522-21turbostat22:35:003
126952993932,5cyclictest208985-21turbostat23:25:003
12695299390,4cyclictest213739-21turbostat23:40:003
12695299390,4cyclictest161998-21turbostat21:00:003
12695299390,38cyclictest202353-21turbostat23:05:003
126950993935,3cyclictest212138-21kworker/u8:2+i91500:25:591
12695099390,37cyclictest714-21Xorg00:18:591
12695099390,2cyclictest714-21Xorg19:44:581
126952993832,4cyclictest133291-21turbostat19:29:593
12695299380,3cyclictest228403-21turbostat00:25:003
12695299380,3cyclictest228403-21turbostat00:24:593
12695299380,37cyclictest154041-21turbostat20:35:003
126951993835,2cyclictest0-21swapper/200:36:002
126950993836,1cyclictest0-21swapper/122:45:591
126950993835,2cyclictest0-21swapper/100:30:581
12695299370,36cyclictest0-21swapper/322:16:593
126951993734,2cyclictest0-21swapper/221:36:592
126951993734,2cyclictest0-21swapper/200:27:582
12695199370,35cyclictest0-21swapper/223:53:002
126950993714,9cyclictest484-21dbus-daemon00:25:001
126950993714,9cyclictest484-21dbus-daemon00:24:591
126949993731,4cyclictest133324-21systemd19:30:000
126952993633,2cyclictest0-21swapper/320:19:593
126952993631,4cyclictest229999-21turbostat00:29:593
126952993631,4cyclictest225222-21turbostat00:19:563
126952993630,5cyclictest184562-21turbostat22:10:003
126952993629,5cyclictest189354-21turbostat22:25:003
12695299360,35cyclictest0-21swapper/321:32:593
12695299360,35cyclictest0-21swapper/321:32:593
12695299360,35cyclictest0-21swapper/321:15:593
126951993634,1cyclictest0-21swapper/223:24:582
126951993633,2cyclictest0-21swapper/219:27:592
126950993613,10cyclictest714-21Xorg23:23:591
126952993533,1cyclictest0-21swapper/320:41:593
126952993532,2cyclictest0-21swapper/323:27:593
126952993532,2cyclictest0-21swapper/321:12:593
126952993529,5cyclictest181394-21turbostat22:00:013
126952993529,5cyclictest181394-21turbostat22:00:013
126952993528,5cyclictest199143-21turbostat22:55:003
12695299350,1cyclictest0-21swapper/319:40:593
126951993532,2cyclictest0-21swapper/222:03:592
126951993532,2cyclictest0-21swapper/221:07:592
126951993532,2cyclictest0-21swapper/220:34:552
126950993530,4cyclictest271rcuc/120:46:581
126950993528,5cyclictest0-21swapper/120:35:131
12695099352,30cyclictest181638-21apt-get22:00:121
126950993512,8cyclictest714-21Xorg22:20:591
126950993512,8cyclictest714-21Xorg19:20:591
126950993512,8cyclictest714-21Xorg19:20:591
126950993511,10cyclictest133096-21sed19:25:241
4577091340,3ptp4l61490irq/134-eno1-TxRx-023:30:123
126952993432,1cyclictest0-21swapper/322:29:563
126952993428,4cyclictest144505-21turbostat20:05:003
126951993432,1cyclictest0-21swapper/200:19:592
126951993431,2cyclictest0-21swapper/200:21:002
126951993431,2cyclictest0-21swapper/200:21:002
126950993427,5cyclictest170218-21kworker/u8:0+flush-179:021:30:251
126950993427,5cyclictest170218-21kworker/u8:0+flush-179:021:30:251
126950993412,7cyclictest150898-21munin-run20:25:011
126950993411,8cyclictest714-21Xorg00:38:591
126950993410,9cyclictest161089-21hwlatdetect20:55:171
126950993410,10cyclictest162707-21hwlatdetect21:00:171
126952993331,1cyclictest0-21swapper/322:59:583
126952993329,3cyclictest139671-21turbostat19:49:593
126951993331,1cyclictest0-21swapper/222:39:592
126951993330,2cyclictest0-21swapper/222:45:592
126951993330,2cyclictest0-21swapper/222:10:592
126951993330,2cyclictest0-21swapper/220:15:592
126952993229,2cyclictest0-21swapper/322:11:593
126952993229,2cyclictest0-21swapper/320:39:593
126951993229,2cyclictest0-21swapper/220:07:592
126952993128,2cyclictest0-21swapper/321:50:593
126952993126,4cyclictest220379-21turbostat00:00:013
126951993129,1cyclictest0-21swapper/219:59:592
126951993128,2cyclictest0-21swapper/222:51:592
126951993128,2cyclictest0-21swapper/220:54:002
12695199310,29cyclictest0-21swapper/219:35:592
4577091300,4ptp4l441ktimers/323:54:553
126952993028,1cyclictest0-21swapper/300:03:003
12695299300,28cyclictest0-21swapper/320:10:133
12695299300,28cyclictest0-21swapper/319:20:143
12695299300,28cyclictest0-21swapper/319:20:133
12695299300,28cyclictest0-21swapper/300:30:133
126951993027,2cyclictest0-21swapper/223:46:592
12695199300,28cyclictest0-21swapper/223:55:582
126952992927,1cyclictest0-21swapper/321:01:593
126952992926,2cyclictest0-21swapper/323:05:023
126952992923,5cyclictest207375-21turbostat23:20:003
12695299290,28cyclictest0-21swapper/321:05:023
12695299290,27cyclictest0-21swapper/300:35:123
126951992927,1cyclictest0-21swapper/223:30:012
126951992926,2cyclictest0-21swapper/223:37:592
126951992926,2cyclictest0-21swapper/222:25:132
126951992926,2cyclictest0-21swapper/220:40:122
126951992926,2cyclictest0-21swapper/219:31:582
126951992926,2cyclictest0-21swapper/219:15:582
12695199290,28cyclictest0-21swapper/200:00:132
12695199290,27cyclictest0-21swapper/223:15:142
12695199290,27cyclictest0-21swapper/223:05:022
12695199290,27cyclictest0-21swapper/219:45:122
126952992825,2cyclictest0-21swapper/323:50:013
126952992825,2cyclictest0-21swapper/320:45:123
126952992823,4cyclictest130123-21turbostat19:20:003
12695299280,26cyclictest0-21swapper/322:45:123
12695299280,26cyclictest0-21swapper/321:20:133
126951992825,2cyclictest0-21swapper/222:40:122
126951992825,2cyclictest0-21swapper/220:00:582
126951992825,2cyclictest0-21swapper/219:23:002
126951992825,2cyclictest0-21swapper/219:22:592
12695199280,2cyclictest0-21swapper/221:45:132
12695199280,27cyclictest0-21swapper/221:52:592
12695199280,26cyclictest0-21swapper/200:10:112
12695199280,26cyclictest0-21swapper/200:05:142
4577091270,6ptp4l61490irq/134-eno1-TxRx-022:45:013
4577091270,6ptp4l441ktimers/323:15:003
4577091270,6ptp4l441ktimers/321:29:553
126952992725,1cyclictest0-21swapper/320:25:133
12695299270,1cyclictest0-21swapper/320:05:153
126951992724,2cyclictest0-21swapper/223:30:132
126951992724,2cyclictest0-21swapper/221:27:592
126951992724,2cyclictest0-21swapper/219:13:592
12695199270,24cyclictest0-21swapper/221:04:552
12695199270,19cyclictest0-21swapper/222:19:592
4577091260,6ptp4l61490irq/134-eno1-TxRx-019:40:013
4577091260,5ptp4l441ktimers/300:14:553
4577091260,4ptp4l441ktimers/319:34:543
12695299260,24cyclictest0-21swapper/322:35:033
126951992623,2cyclictest0-21swapper/222:55:592
126951992623,2cyclictest0-21swapper/221:18:592
12695199260,24cyclictest0-21swapper/219:43:002
12695199260,23cyclictest0-21swapper/220:40:002
4577091250,5ptp4l441ktimers/323:44:553
4577091250,5ptp4l441ktimers/321:40:003
126952992519,4cyclictest141249-21turbostat19:55:013
126951992523,1cyclictest0-21swapper/221:25:002
126951992523,1cyclictest0-21swapper/220:27:592
126951992522,2cyclictest0-21swapper/222:33:002
126951992522,2cyclictest0-21swapper/221:13:592
126951992522,2cyclictest0-21swapper/220:45:582
126951992522,2cyclictest0-21swapper/200:33:592
12695199250,2cyclictest0-21swapper/220:13:592
126951992422,1cyclictest0-21swapper/223:00:582
126951992421,2cyclictest0-21swapper/222:07:592
126951992420,2cyclictest0-21swapper/219:54:592
126951992320,2cyclictest0-21swapper/221:55:122
126951992320,2cyclictest0-21swapper/221:55:122
126951992220,1cyclictest0-21swapper/223:14:592
126951992220,1cyclictest0-21swapper/220:59:592
126951992219,2cyclictest0-21swapper/223:44:542
126951992219,2cyclictest0-21swapper/221:32:592
126951992219,2cyclictest0-21swapper/221:32:592
126951992017,2cyclictest0-21swapper/220:22:592
126951991916,2cyclictest0-21swapper/222:24:552
126949991916,2cyclictest126951-21cyclictest19:10:020
126949991916,2cyclictest126951-21cyclictest19:10:020
1269519930,2cyclictest0-21swapper/219:10:012
1269519930,2cyclictest0-21swapper/219:10:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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