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2026-07-24 - 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 792 highest latencies:
System rackeslot6.osadl.org (updated Fri Jul 24, 2026 00:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
208701699141128,10cyclictest1213033-21systemd-journal20:40:011
208701499139126,10cyclictest510-21rs:main0
208701699136123,9cyclictest2128855-21kworker/u8:3+flush-179:021:34:591
208701499128115,9cyclictest2094854-21latency_hist19:35:010
208701499125109,12cyclictest1213033-21systemd-journal22:44:590
208701699112106,4cyclictest2174506-21kworker/u8:0+flush-179:023:40:261
208701699112101,9cyclictest2088741-21apt-get19:15:121
208701499110101,6cyclictest2098046-21latency_hist19:45:010
208701499110100,7cyclictest2191185-21latency_hist00:35:010
208701699109100,6cyclictest2128855-21kworker/u8:3+flush-179:021:50:261
20870169910697,6cyclictest2178384-21latency_hist23:55:011
20870169910292,8cyclictest2178367-21kworker/u8:2+events_unbound00:00:001
20870169910193,6cyclictest2107837-21apt-get20:15:111
20870169910192,6cyclictest2122437-21apt-get21:00:111
20870149910194,5cyclictest2110203-21kworker/u8:2+events_unbound20:40:170
20870149910190,7cyclictest1213033-21systemd-journal19:25:000
2087014999990,7cyclictest2151127-21kworker/u8:1+flush-179:000:00:000
2087016999786,8cyclictest1213033-21systemd-journal22:25:011
2087014999581,11cyclictest1213033-21systemd-journal23:55:010
2087016999485,7cyclictest2191440-21apt-get00:35:121
2087014999486,5cyclictest2149471-21kworker/u8:0+flush-179:022:35:150
2087014999481,8cyclictest484-21dbus-daemon21:34:590
2087016999385,6cyclictest2122136-21kworker/u8:1+flush-179:021:35:261
2087014999383,7cyclictest2151127-21kworker/u8:1+flush-179:022:55:200
2087016999287,3cyclictest2125590-21kworker/u8:0+events_unbound21:10:281
2087016999287,3cyclictest2125590-21kworker/u8:0+events_unbound21:10:271
2087016999284,6cyclictest2101472-21apt-get19:55:121
2087014999080,8cyclictest2163950-21kworker/u8:3+events_unbound23:35:000
2087014999079,9cyclictest2181893-21apt-get00:05:140
2087014998780,4cyclictest2125590-21kworker/u8:0+flush-179:021:15:250
2087014998777,7cyclictest2149471-21kworker/u8:0+flush-179:023:00:240
2087016998580,3cyclictest2163950-21kworker/u8:3+flush-179:023:15:151
2087014998577,5cyclictest2128855-21kworker/u8:3+flush-179:022:10:190
2087016998478,4cyclictest2099887-21apt-get19:50:131
2087016998372,8cyclictest1213033-21systemd-journal20:20:191
2087014998376,5cyclictest2131974-21kworker/u8:2+flush-179:021:45:160
2087014998374,6cyclictest2180041-21kworker/u8:3+flush-179:000:15:000
2087014998372,9cyclictest2087157-21apt-get19:10:110
2087016998270,10cyclictest1213033-21systemd-journal23:10:161
2087016998167,12cyclictest2114203-21kworker/u8:0+flush-179:020:55:171
2087014998073,5cyclictest2099667-21kworker/u8:3+flush-179:019:55:220
2087016997971,6cyclictest2151127-21kworker/u8:1+flush-179:023:25:191
2087016997872,4cyclictest2149471-21kworker/u8:0+flush-179:023:00:011
2087014997869,7cyclictest2125590-21kworker/u8:0+events_unbound21:15:020
2087014997869,7cyclictest2125590-21kworker/u8:0+events_unbound21:15:020
2087016997771,5cyclictest2138580-21kworker/u8:0+flush-179:022:00:011
2087016997771,4cyclictest2083323-21kworker/u8:0+flush-179:019:10:201
2087016997766,9cyclictest1213033-21systemd-journal22:30:001
2087014997673,2cyclictest2093311-21kworker/u8:1+flush-179:019:45:150
2087016997571,3cyclictest2128855-21kworker/u8:3+flush-179:021:49:551
2087016997568,5cyclictest2138580-21kworker/u8:0+flush-179:022:05:171
2087016997566,7cyclictest2163938-21store23:10:001
2087016997565,7cyclictest2093266-21latency_hist19:30:011
2087014997566,7cyclictest2110778-21latency_hist20:25:010
2087014997468,4cyclictest2093311-21kworker/u8:1+flush-179:020:45:190
2087014997464,8cyclictest2167517-21apt-get23:20:120
2087016997363,7cyclictest2128855-21kworker/u8:3+flush-179:022:15:171
2087016997363,7cyclictest2128855-21kworker/u8:3+flush-179:022:15:171
2087016997353,17cyclictest2186376-21kworker/u8:0+flush-179:000:25:111
2087014997363,8cyclictest2180267-21apt-get00:00:110
2087016997262,6cyclictest2151127-21kworker/u8:1+flush-179:000:04:561
2087014997263,7cyclictest2120573-21latency_hist20:55:000
2087014997166,3cyclictest2191848-21kworker/u8:2+flush-179:000:35:220
2087014997164,5cyclictest2138599-21apt-get21:50:120
2087014997060,7cyclictest2151127-21kworker/u8:1+flush-179:023:10:010
2087016996958,9cyclictest2127453-21apt-get21:15:121
2087014996959,7cyclictest2149471-21kworker/u8:0+flush-179:022:30:230
2087016996863,3cyclictest2125590-21kworker/u8:0+flush-179:021:25:271
2087016996861,5cyclictest2093311-21kworker/u8:1+flush-179:020:30:161
2087016996855,11cyclictest1213033-21systemd-journal19:45:001
2087016996844,21cyclictest1213033-21systemd-journal23:24:551
2087014996760,5cyclictest2172275-21apt-get23:35:100
2087016996658,5cyclictest2149471-21kworker/u8:0+events_unbound23:00:171
2087016996657,7cyclictest2110203-21kworker/u8:2+flush-179:020:40:271
2087014996662,3cyclictest2180041-21kworker/u8:3+flush-179:000:15:300
2087016996561,3cyclictest2149471-21kworker/u8:0+flush-179:022:30:241
2087016996558,4cyclictest2151127-21kworker/u8:1+events_unbound00:10:251
2087016996556,7cyclictest2114203-21kworker/u8:0+events_unbound20:55:001
2087016996457,5cyclictest2099667-21kworker/u8:3+flush-179:020:00:231
2087016996457,4cyclictest2125590-21kworker/u8:0+flush-179:021:20:241
2087016996454,8cyclictest2149471-21kworker/u8:0+flush-179:022:50:221
2087016996453,8cyclictest1213033-21systemd-journal22:01:141
2087014996457,5cyclictest2099667-21kworker/u8:3+flush-179:020:00:160
2087014996453,8cyclictest2093311-21kworker/u8:1+flush-179:020:10:000
2087014996447,7cyclictest510-21rs:main0
2087019996360,2cyclictest0-21swapper/219:37:592
2087014996356,5cyclictest2131974-21kworker/u8:2+flush-179:021:40:260
2087014996352,9cyclictest2100175-21diskstats19:50:170
2087016996256,4cyclictest2174506-21kworker/u8:0+events_unbound23:45:141
2087016996255,5cyclictest2149471-21kworker/u8:0+events_unbound22:40:231
2087016996242,18cyclictest1213033-21systemd-journal23:40:001
2087016996236,23cyclictest2157442-21latency_hist22:50:001
2087016996151,8cyclictest2186414-21latency_hist00:20:001
2087014996056,2cyclictest714-21Xorg23:43:590
2087014996053,5cyclictest2147892-21latency_hist22:20:020
2087014996053,5cyclictest2147892-21latency_hist22:20:010
2087016995952,5cyclictest2163950-21kworker/u8:3+flush-179:023:30:221
2087014995853,3cyclictest2151127-21kworker/u8:1+flush-179:000:20:260
2087014995752,3cyclictest2093311-21kworker/u8:1+flush-179:019:40:010
2087014995751,5cyclictest2151127-21kworker/u8:1+events_unbound23:20:020
2087014995748,6cyclictest2170433-21latency_hist23:30:010
2087016995652,3cyclictest2110203-21kworker/u8:2+flush-179:020:27:131
2087016995647,7cyclictest2104667-21apt-get20:05:121
2087016995643,8cyclictest2093311-21kworker/u8:1+flush-179:019:45:231
2087014995651,4cyclictest1446988-21kworker/u8:2+flush-179:019:25:230
2087014995646,6cyclictest2114203-21kworker/u8:0+flush-179:020:55:220
2087020995553,1cyclictest0-21swapper/320:24:593
2087016995548,6cyclictest2180041-21kworker/u8:3+events_unbound00:05:281
2087016995446,7cyclictest2122136-21kworker/u8:1+flush-179:021:10:011
2087016995446,5cyclictest2093311-21kworker/u8:1+flush-179:019:35:161
2087016995444,6cyclictest1446988-21kworker/u8:2+events_unbound19:30:161
2087014995445,7cyclictest2151127-21kworker/u8:1+events_unbound23:10:000
2087014995445,7cyclictest1213033-21systemd-journal22:52:140
2087016995244,6cyclictest2186376-21kworker/u8:0+events_unbound00:25:001
2087014995243,6cyclictest1-21systemd22:25:000
2087016995043,5cyclictest2093311-21kworker/u8:1+events_unbound20:45:231
208701699500,4cyclictest714-21Xorg21:41:591
2087014995044,4cyclictest2093311-21kworker/u8:1+flush-179:020:15:210
4577091490,13ptp4l61490irq/134-eno1-TxRx-019:10:013
2087020994846,1cyclictest0-21swapper/323:43:593
2087016994841,5cyclictest321-21hwrng00:32:591
2087016994740,5cyclictest1446988-21kworker/u8:2+events_unbound19:20:231
2087014994741,5cyclictest2110203-21kworker/u8:2+flush-179:020:35:150
2087014994740,5cyclictest2138580-21kworker/u8:0+flush-179:022:05:160
2087019994543,1cyclictest0-21swapper/219:44:592
2087016994540,4cyclictest2093311-21kworker/u8:1+flush-179:020:10:201
2087016994533,7cyclictest0-21swapper/122:39:591
208701999440,42cyclictest0-21swapper/221:45:592
2087016994438,4cyclictest2128855-21kworker/u8:3+flush-179:022:10:171
2087014994440,3cyclictest2110203-21kworker/u8:2+flush-179:020:28:150
2087014994436,6cyclictest2130393-21latency_hist21:25:000
2087014994337,5cyclictest2149746-21apt-get22:25:110
2087014994335,7cyclictest2110203-21kworker/u8:2+flush-179:020:30:240
208702099420,40cyclictest2151095-21turbostat22:30:013
2087020994139,1cyclictest0-21swapper/323:29:583
2087020994134,6cyclictest2184824-21turbostat00:15:003
2087019994138,2cyclictest0-21swapper/220:40:582
208702099400,5cyclictest2186411-21turbostat00:20:003
208701499400,39cyclictest2133571-21turbostat21:39:540
208702099390,38cyclictest2109197-21turbostat20:20:003
208701499391,10cyclictest2124144-21apt-config21:05:020
2087019993835,2cyclictest0-21swapper/222:11:582
2087019993835,2cyclictest0-21swapper/221:04:002
208701999380,35cyclictest0-21swapper/223:36:592
2087020993732,4cyclictest2098054-21turbostat19:45:003
208702099370,36cyclictest0-21swapper/322:50:003
208702099370,35cyclictest0-21swapper/321:35:593
2087019993734,2cyclictest0-21swapper/220:59:542
2087019993734,2cyclictest0-21swapper/219:19:552
208701999370,35cyclictest0-21swapper/222:37:002
208701999370,35cyclictest0-21swapper/220:46:592
2087020993634,1cyclictest0-21swapper/323:57:593
2087020993634,1cyclictest0-21swapper/320:44:593
2087020993634,1cyclictest0-21swapper/320:38:583
2087020993634,1cyclictest0-21swapper/320:14:553
2087020993634,1cyclictest0-21swapper/300:21:593
208702099360,35cyclictest0-21swapper/323:48:593
208702099360,35cyclictest0-21swapper/322:10:593
208702099360,35cyclictest0-21swapper/321:19:003
2087019993633,2cyclictest0-21swapper/223:45:582
2087019993633,2cyclictest0-21swapper/222:19:562
2087019993633,2cyclictest0-21swapper/222:19:552
2087019993633,2cyclictest0-21swapper/219:33:592
2087019993633,2cyclictest0-21swapper/200:04:552
208701999360,1cyclictest0-21swapper/223:29:552
208701999360,1cyclictest0-21swapper/221:11:592
208701999360,1cyclictest0-21swapper/221:11:582
2087014993629,5cyclictest2149471-21kworker/u8:0+flush-179:022:45:170
208702099350,1cyclictest0-21swapper/319:18:593
2087019993533,1cyclictest0-21swapper/200:14:592
2087019993532,2cyclictest0-21swapper/222:58:582
2087019993532,2cyclictest0-21swapper/221:32:592
2087019993532,2cyclictest0-21swapper/220:19:002
208701999350,1cyclictest0-21swapper/222:55:002
208701999350,1cyclictest0-21swapper/220:34:002
208701999350,1cyclictest0-21swapper/220:29:562
2087014993531,2cyclictest2125590-21kworker/u8:0+events_unbound21:25:190
2087014993526,6cyclictest2188249-21/usr/sbin/munin00:25:110
208702099340,33cyclictest0-21swapper/322:36:593
2087019993431,2cyclictest0-21swapper/223:04:552
2087019993431,2cyclictest0-21swapper/221:44:582
2087020993331,1cyclictest0-21swapper/323:17:593
2087020993331,1cyclictest0-21swapper/322:59:553
2087019993330,2cyclictest0-21swapper/220:13:592
2087014993329,3cyclictest2143160-21systemd-run22:05:010
208701499331,31cyclictest2107597-21awk20:15:000
2087019993229,2cyclictest0-21swapper/223:59:562
2087019993229,2cyclictest0-21swapper/222:21:592
2087014993229,2cyclictest0-21swapper/019:16:590
2087020993129,1cyclictest0-21swapper/300:07:593
2087019993128,2cyclictest0-21swapper/219:48:592
2087019993128,2cyclictest0-21swapper/200:35:592
2087020993028,1cyclictest0-21swapper/300:32:593
2087020993027,2cyclictest0-21swapper/319:30:593
2087020993025,4cyclictest2102813-21turbostat20:04:543
2087019993028,1cyclictest0-21swapper/200:34:592
2087019993027,2cyclictest0-21swapper/222:46:582
2087019993027,2cyclictest0-21swapper/219:21:592
2087019993027,2cyclictest0-21swapper/200:15:152
4578291290,27phc2sys0-21swapper/323:10:023
2087020992927,1cyclictest0-21swapper/322:05:133
208702099290,28cyclictest2088493-21turbostat19:15:003
208702099290,28cyclictest0-21swapper/320:45:163
208702099290,27cyclictest0-21swapper/320:25:123
208702099290,21cyclictest0-21swapper/320:30:033
2087019992926,2cyclictest0-21swapper/222:04:542
2087019992926,2cyclictest0-21swapper/221:15:152
2087019992926,2cyclictest0-21swapper/220:00:142
2087019992926,2cyclictest0-21swapper/200:25:592
208701999290,27cyclictest0-21swapper/223:50:142
208701999290,27cyclictest0-21swapper/223:40:152
208701999290,27cyclictest0-21swapper/221:55:132
208701999290,27cyclictest0-21swapper/221:25:132
208701999290,27cyclictest0-21swapper/220:50:132
208701999290,27cyclictest0-21swapper/200:20:132
2087014992922,5cyclictest2141525-21latency_hist22:00:010
2087020992826,1cyclictest0-21swapper/319:50:143
2087020992826,1cyclictest0-21swapper/300:39:553
2087020992825,2cyclictest0-21swapper/323:00:153
208702099280,2cyclictest0-21swapper/322:20:133
208702099280,27cyclictest0-21swapper/319:55:143
208702099280,27cyclictest0-21swapper/300:00:133
208702099280,26cyclictest0-21swapper/322:00:133
208702099280,26cyclictest0-21swapper/321:10:153
208702099280,26cyclictest0-21swapper/321:10:153
208702099280,26cyclictest0-21swapper/321:05:023
208702099280,26cyclictest0-21swapper/320:55:143
208702099280,26cyclictest0-21swapper/319:20:153
2087019992825,2cyclictest0-21swapper/223:20:132
2087019992825,2cyclictest0-21swapper/220:24:552
2087019992825,2cyclictest0-21swapper/200:06:592
208701999280,2cyclictest0-21swapper/223:05:142
208701999280,2cyclictest0-21swapper/220:37:002
208701999280,27cyclictest0-21swapper/223:30:122
208701999280,27cyclictest0-21swapper/223:10:012
208701999280,26cyclictest0-21swapper/222:30:132
208701999280,26cyclictest0-21swapper/221:20:162
2087020992725,1cyclictest0-21swapper/320:09:563
208702099270,26cyclictest0-21swapper/321:05:013
208702099270,24cyclictest0-21swapper/319:25:593
2087019992724,2cyclictest0-21swapper/221:38:002
2087019992724,2cyclictest0-21swapper/219:54:582
208702099260,25cyclictest0-21swapper/322:54:593
208702099260,24cyclictest0-21swapper/323:06:593
2087019992624,1cyclictest0-21swapper/223:19:592
208701999260,24cyclictest0-21swapper/221:52:002
208701999260,24cyclictest0-21swapper/219:10:132
4577091250,3ptp4l61490irq/134-eno1-TxRx-021:55:003
4577091250,3ptp4l441ktimers/322:35:013
4577091250,3ptp4l441ktimers/321:45:013
2087020992523,1cyclictest0-21swapper/322:40:593
2087020992523,1cyclictest0-21swapper/300:28:593
208702099250,24cyclictest0-21swapper/321:46:593
2087019992522,2cyclictest0-21swapper/222:09:002
4577091240,3ptp4l441ktimers/323:39:563
4577091240,3ptp4l441ktimers/323:34:553
2087020992422,1cyclictest0-21swapper/321:24:583
2087020992422,1cyclictest0-21swapper/319:49:543
2087020992422,1cyclictest0-21swapper/319:38:593
208702099240,1cyclictest0-21swapper/322:16:593
208702099240,1cyclictest0-21swapper/322:16:583
2087019992422,1cyclictest0-21swapper/219:27:592
4577091230,3ptp4l61490irq/134-eno1-TxRx-023:54:563
4577091230,3ptp4l61490irq/134-eno1-TxRx-021:35:003
4577091230,3ptp4l61490irq/134-eno1-TxRx-021:30:013
4577091230,2ptp4l61490irq/134-eno1-TxRx-023:24:553
2087020992320,2cyclictest0-21swapper/321:55:143
2087019992320,1cyclictest0-21swapper/220:09:592
4577091220,3ptp4l61490irq/134-eno1-TxRx-020:54:553
2087016992116,4cyclictest0-21swapper/119:10:021
2087019991917,1cyclictest0-21swapper/219:56:592
2087019991916,2cyclictest0-21swapper/222:40:132
2087019991916,2cyclictest0-21swapper/221:05:142
208701499191,13cyclictest2087018-21date19:10:020
20870199974,2cyclictest0-21swapper/222:26:572
20870199930,2cyclictest0-21swapper/219:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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