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2026-09-13 - 07:17
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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 Sun Sep 13, 2026 00:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
225237299145131,11cyclictest1213033-21systemd-journal19:50:001
225236899135126,6cyclictest2292610-21kworker/u8:1+events_unbound22:30:010
225237299132108,20cyclictest2307441-21latency_hist22:00:011
225236899132127,4cyclictest2297390-21kworker/u8:0+events_unbound21:35:000
225236899132126,5cyclictest2255703-21kworker/u8:2+flush-179:019:55:010
225237299128118,7cyclictest1213033-21systemd-journal20:15:001
225236899126119,6cyclictest2281418-21kworker/u8:3+events_unbound20:45:000
225236899124118,4cyclictest2352541-21kworker/u8:3+events_unbound00:30:290
225237299122112,8cyclictest2286243-21kworker/u8:3+events_unbound21:20:011
225236899122117,4cyclictest2300506-21kworker/u8:2+events_unbound21:50:260
225236899122110,9cyclictest2337661-21latency_hist23:35:010
225236899121112,7cyclictest2255703-21kworker/u8:2+events_unbound19:35:240
225236899121112,6cyclictest2276661-21kworker/u8:2+events_unbound20:25:180
225237299120109,7cyclictest2346146-21cat00:00:031
225236899120115,4cyclictest2300506-21kworker/u8:2+events_unbound21:55:240
225236899119110,7cyclictest2286185-21kworker/u8:2+flush-179:020:55:210
225236899117108,6cyclictest1-21systemd22:50:010
225236899117105,4cyclictest2255704-21kworker/u8:3+events_unbound19:25:010
225237299116102,9cyclictest2318800-21kworker/u8:0+flush-179:022:40:221
225236899116109,5cyclictest2328100-21kworker/u8:2+flush-179:023:40:200
225237299114103,8cyclictest2326518-21latency_hist23:00:011
225236899114108,5cyclictest2255704-21kworker/u8:3+events_unbound19:25:260
225236899114106,6cyclictest2318800-21kworker/u8:0+events_unbound22:40:260
225236899114104,8cyclictest2303718-21latency_hist21:50:000
225237299113104,6cyclictest2271754-21gpgv20:10:021
225237299113104,6cyclictest2255705-21/usr/sbin/munin19:20:261
225237299112100,8cyclictest2255479-21latency_hist19:20:021
225237299112100,10cyclictest2288070-21apt-get21:00:131
225236899111104,5cyclictest2318800-21kworker/u8:0+flush-179:022:50:280
225236899111103,6cyclictest2341386-21kworker/u8:1+flush-179:023:50:160
225236899111103,6cyclictest2255703-21kworker/u8:2+events_unbound19:55:240
22523729911098,9cyclictest2292610-21kworker/u8:1+flush-179:022:05:221
22523729910999,7cyclictest2255704-21kworker/u8:3+flush-179:019:40:001
22523729910896,8cyclictest2328100-21kworker/u8:2+flush-179:023:30:151
22523689910898,8cyclictest1213033-21systemd-journal00:04:010
22523689910898,8cyclictest1213033-21systemd-journal00:04:000
22523729910698,5cyclictest2286185-21kworker/u8:2+flush-179:021:10:001
22523729910698,5cyclictest2258684-21kworker/u8:0+flush-179:019:30:231
22523729910696,7cyclictest2253857-21latency_hist19:15:011
22523689910699,6cyclictest2328100-21kworker/u8:2+flush-179:023:25:250
225236899106100,4cyclictest2313852-21kworker/u8:3+flush-179:022:35:240
22523689910599,4cyclictest2292610-21kworker/u8:1+flush-179:021:20:250
22523689910599,4cyclictest2292610-21kworker/u8:1+flush-179:021:20:250
22523689910599,4cyclictest2275035-21kworker/u8:1+flush-179:020:20:260
22523689910599,4cyclictest2266567-21kworker/u8:0+flush-179:020:30:200
22523729910499,3cyclictest2292610-21kworker/u8:1+flush-179:021:30:191
22523729910468,20cyclictest2357407-21latency_hist00:35:001
22523689910497,5cyclictest2350699-21kworker/u8:1+flush-179:000:25:210
22523689910397,4cyclictest2284082-21kworker/u8:1+flush-179:020:50:150
22523689910395,6cyclictest2292610-21kworker/u8:1+events_unbound22:25:000
22523689910393,7cyclictest2255704-21kworker/u8:3+events_unbound19:30:190
22523729910295,5cyclictest2284082-21kworker/u8:1+events_unbound20:50:011
22523729910294,5cyclictest2292610-21kworker/u8:1+flush-179:021:40:151
22523689910296,4cyclictest2255703-21kworker/u8:2+events_unbound19:40:260
22523689910295,5cyclictest2350699-21kworker/u8:1+events_unbound00:20:250
22523729910191,6cyclictest2266567-21kworker/u8:0+flush-179:020:40:191
22523689910192,6cyclictest2337636-21kworker/u8:0+flush-179:023:45:150
22523689910094,4cyclictest2286243-21kworker/u8:3+events_unbound21:15:010
22523689910093,5cyclictest2292610-21kworker/u8:1+events_unbound21:25:220
22523689910093,5cyclictest2266567-21kworker/u8:0+flush-179:020:35:230
2252368999994,4cyclictest2328100-21kworker/u8:2+flush-179:023:20:240
2252368999991,6cyclictest2331292-21latency_hist23:15:010
2252368999894,3cyclictest2286243-21kworker/u8:3+flush-179:021:35:250
2252368999893,4cyclictest2300506-21kworker/u8:2+flush-179:022:10:210
2252372999785,9cyclictest2328100-21kworker/u8:2+flush-179:023:45:191
2252372999688,5cyclictest2292610-21kworker/u8:1+flush-179:022:30:241
2252372999687,6cyclictest2355789-21kworker/u8:0+flush-179:000:35:231
2252368999689,5cyclictest2323381-21kworker/u8:1+flush-179:022:55:160
2252368999682,6cyclictest2323381-21kworker/u8:1+events_unbound23:00:190
2252368999681,4cyclictest2286243-21kworker/u8:3+events_unbound21:00:270
2252368999589,4cyclictest1609157-21kworker/u8:1+events_unbound19:10:230
2252368999588,6cyclictest2266567-21kworker/u8:0+events_unbound20:00:190
2252368999587,6cyclictest2328376-21apt-get23:05:110
2252372999487,5cyclictest2344002-21kworker/u8:0+flush-179:000:00:281
2252372999487,5cyclictest2344002-21kworker/u8:0+flush-179:000:00:271
2252368999481,7cyclictest2286243-21kworker/u8:3+events_unbound21:15:240
2252372999281,9cyclictest1213033-21systemd-journal00:15:001
2252368999186,4cyclictest2266567-21kworker/u8:0+flush-179:020:10:220
2252372999078,9cyclictest2266567-21kworker/u8:0+events_unbound20:40:011
2252372999077,10cyclictest1213033-21systemd-journal00:20:001
2252368998983,4cyclictest2341386-21kworker/u8:1+flush-179:023:55:220
2252372998876,9cyclictest2303846-21gpgv21:50:001
2252368998881,5cyclictest2292610-21kworker/u8:1+events_unbound22:30:190
2252372998777,7cyclictest2266567-21kworker/u8:0+flush-179:020:15:231
2252368998782,4cyclictest2328100-21kworker/u8:2+events_unbound23:35:260
2252372998680,4cyclictest2292610-21kworker/u8:1+flush-179:022:00:241
2252372998676,7cyclictest2292610-21kworker/u8:1+flush-179:021:25:171
2252372998676,6cyclictest2292610-21kworker/u8:1+flush-179:022:15:251
2252368998681,4cyclictest2347485-21kworker/u8:2+flush-179:000:05:160
2252368998677,7cyclictest2292610-21kworker/u8:1+events_unbound22:15:160
2252368998676,8cyclictest510-21rs:main0
2252368998579,4cyclictest1609157-21kworker/u8:1+flush-179:019:15:210
2252372998462,19cyclictest2318819-21apt-get22:35:131
2252368998480,3cyclictest2292610-21kworker/u8:1+flush-179:022:00:210
2252368998477,4cyclictest2286243-21kworker/u8:3+flush-179:021:40:160
2252368998378,3cyclictest2269231-21kworker/u8:1+flush-179:020:05:150
2252372998273,6cyclictest2286243-21kworker/u8:3+flush-179:021:35:181
2252372998253,6cyclictest1213033-21systemd-journal23:04:271
2252372998170,8cyclictest2269231-21kworker/u8:1+flush-179:020:05:001
2252372998072,6cyclictest2286185-21kworker/u8:2+flush-179:021:10:231
2252368998076,3cyclictest2255703-21kworker/u8:2+flush-179:019:45:150
2252368997974,4cyclictest2300506-21kworker/u8:2+flush-179:022:05:160
2252368997873,4cyclictest2347485-21kworker/u8:2+flush-179:000:15:290
2252368997872,4cyclictest2286185-21kworker/u8:2+flush-179:021:05:150
2252368997867,8cyclictest2350734-21apt-get00:15:010
2252372997669,4cyclictest2344002-21kworker/u8:0+flush-179:000:05:231
2252372997565,8cyclictest2310844-21/usr/sbin/munin22:10:171
2252372997462,8cyclictest1213033-21systemd-journal23:40:011
2252376997366,5cyclictest2291007-21turbostat21:10:003
2252372997368,4cyclictest2313842-21kworker/u8:0+flush-179:022:25:211
2252372997364,7cyclictest2255704-21kworker/u8:3+events_unbound19:50:151
2252372997264,5cyclictest2323381-21kworker/u8:1+flush-179:023:10:191
2252372997161,7cyclictest2328100-21kworker/u8:2+flush-179:023:20:011
2252372997161,7cyclictest2328100-21kworker/u8:2+flush-179:023:20:001
2252368997064,5cyclictest2328100-21kworker/u8:2+flush-179:023:15:280
2252368997064,5cyclictest2328100-21kworker/u8:2+flush-179:023:15:270
2252368997064,4cyclictest2355789-21kworker/u8:0+flush-179:000:35:200
2252372996962,5cyclictest2350699-21kworker/u8:1+events_unbound00:20:171
2252372996859,7cyclictest2341386-21kworker/u8:1+events_unbound23:50:231
2252372996761,5cyclictest2318800-21kworker/u8:0+flush-179:022:45:251
2252372996760,5cyclictest2323381-21kworker/u8:1+flush-179:022:54:561
225237699640,1cyclictest0-21swapper/322:29:003
2252372996451,11cyclictest2276661-21kworker/u8:2+flush-179:020:25:251
2252372996353,6cyclictest2328100-21kworker/u8:2+flush-179:023:05:251
2252372996256,4cyclictest2292610-21kworker/u8:1+flush-179:022:20:151
2252372996251,8cyclictest1213033-21systemd-journal23:29:591
2252372996053,5cyclictest2286185-21kworker/u8:2+flush-179:020:55:281
2252372996049,5cyclictest2286243-21kworker/u8:3+events_unbound21:20:191
2252372996049,5cyclictest2286243-21kworker/u8:3+events_unbound21:20:191
2252372995855,2cyclictest0-21swapper/120:25:001
2252372995750,5cyclictest2255703-21kworker/u8:2+flush-179:019:40:121
2252372995749,6cyclictest2350699-21kworker/u8:1+flush-179:000:25:171
2252368995550,4cyclictest2284082-21kworker/u8:1+events_unbound20:46:290
2252372995247,4cyclictest2255703-21kworker/u8:2+flush-179:019:25:231
2252372995246,5cyclictest2284082-21kworker/u8:1+flush-179:020:50:291
2252372995149,1cyclictest2266567-21kworker/u8:0+events_unbound20:30:231
2252372995143,6cyclictest2292610-21kworker/u8:1+flush-179:021:50:211
2252376994942,6cyclictest2312196-21turbostat22:15:003
2252372994947,1cyclictest2255703-21kworker/u8:2+flush-179:019:55:201
4577091470,13ptp4l441ktimers/319:10:013
2252372994637,7cyclictest2328100-21kworker/u8:2+flush-179:023:20:191
2252376994139,1cyclictest0-21swapper/319:45:593
2252372994136,4cyclictest2337636-21kworker/u8:0+flush-179:023:44:561
225237699400,39cyclictest2324948-21turbostat22:55:003
225237699400,39cyclictest0-21swapper/321:46:593
225237699400,38cyclictest2294199-21turbostat21:20:003
225237699400,38cyclictest2273487-21turbostat20:15:003
2252373994037,2cyclictest0-21swapper/221:14:552
2252373994037,2cyclictest0-21swapper/219:34:592
225237399400,1cyclictest0-21swapper/223:54:592
2252376993832,4cyclictest2352621-21turbostat00:20:003
225237399380,36cyclictest0-21swapper/223:06:592
225237399380,36cyclictest0-21swapper/200:17:002
225237399380,35cyclictest0-21swapper/223:39:552
225237399380,35cyclictest0-21swapper/222:39:552
225237399380,35cyclictest0-21swapper/200:07:582
2252376993734,2cyclictest0-21swapper/323:24:593
2252373993734,2cyclictest0-21swapper/200:29:552
225237399370,35cyclictest0-21swapper/222:59:592
225237399370,35cyclictest0-21swapper/222:33:592
225237399370,35cyclictest0-21swapper/222:05:592
225237399370,35cyclictest0-21swapper/219:12:592
225237399370,29cyclictest0-21swapper/200:21:582
225237699360,35cyclictest0-21swapper/323:43:003
2252373993633,2cyclictest0-21swapper/223:40:582
2252376993533,1cyclictest0-21swapper/323:31:593
2252376993533,1cyclictest0-21swapper/321:30:593
225237699350,1cyclictest0-21swapper/320:59:553
2252373993532,2cyclictest0-21swapper/221:19:552
4577091340,3ptp4l61490irq/134-eno1-TxRx-022:40:133
2252373993431,2cyclictest0-21swapper/221:33:592
2252373993430,2cyclictest0-21swapper/223:25:592
4577091330,4ptp4l441ktimers/300:40:003
2252376993331,1cyclictest0-21swapper/320:00:593
2252376993330,2cyclictest0-21swapper/323:52:583
2252376993328,4cyclictest2292583-21turbostat21:15:003
2252373993330,2cyclictest0-21swapper/223:18:592
2252373993330,2cyclictest0-21swapper/223:18:592
2252368993327,4cyclictest2252247-21latency_hist19:10:020
2252376993230,1cyclictest0-21swapper/322:01:593
2252376993230,1cyclictest0-21swapper/320:46:003
2252376993229,2cyclictest0-21swapper/321:28:593
2252373993230,1cyclictest0-21swapper/221:29:592
2252373993229,2cyclictest0-21swapper/223:57:592
2252373993229,2cyclictest0-21swapper/220:41:582
2252376993129,1cyclictest0-21swapper/320:08:593
2252376993129,1cyclictest0-21swapper/319:40:593
2252376993128,2cyclictest0-21swapper/321:40:593
2252376993125,5cyclictest2260238-21turbostat19:35:003
225237699310,28cyclictest0-21swapper/319:50:143
2252373993128,2cyclictest0-21swapper/222:28:002
2252373993128,2cyclictest0-21swapper/219:39:552
2252373993127,2cyclictest0-21swapper/223:04:552
2252376993027,2cyclictest0-21swapper/323:55:143
2252376993027,2cyclictest0-21swapper/322:15:133
225237699300,28cyclictest0-21swapper/322:45:153
2252373993028,1cyclictest0-21swapper/220:48:592
2252373993027,2cyclictest0-21swapper/222:40:132
2252373993027,2cyclictest0-21swapper/220:20:152
225237399300,29cyclictest0-21swapper/220:15:152
225237399300,28cyclictest0-21swapper/200:10:182
225237399300,28cyclictest0-21swapper/200:00:152
225237399300,28cyclictest0-21swapper/200:00:152
2252376992927,1cyclictest0-21swapper/319:25:143
2252376992926,2cyclictest0-21swapper/320:40:103
2252376992926,2cyclictest0-21swapper/320:30:133
225237699290,1cyclictest0-21swapper/321:59:593
2252373992927,1cyclictest0-21swapper/223:20:112
2252373992926,2cyclictest0-21swapper/223:10:152
2252373992926,2cyclictest0-21swapper/221:55:022
2252373992926,2cyclictest0-21swapper/221:45:142
225237399290,2cyclictest0-21swapper/223:45:132
225237399290,28cyclictest0-21swapper/221:50:022
225237399290,27cyclictest0-21swapper/220:55:142
225237399290,27cyclictest0-21swapper/220:25:142
225237399290,27cyclictest0-21swapper/220:10:022
225237399290,27cyclictest0-21swapper/220:05:132
4577091280,7ptp4l61490irq/134-eno1-TxRx-023:30:003
4577091280,6ptp4l61490irq/134-eno1-TxRx-000:30:003
2252376992825,2cyclictest0-21swapper/323:35:123
2252376992825,2cyclictest0-21swapper/320:35:143
225237699280,26cyclictest0-21swapper/323:05:123
225237699280,26cyclictest0-21swapper/319:55:163
225237699280,21cyclictest0-21swapper/300:30:183
2252373992826,1cyclictest0-21swapper/222:00:132
2252373992825,2cyclictest0-21swapper/220:50:142
225237399280,2cyclictest0-21swapper/221:05:142
225237399280,26cyclictest0-21swapper/219:20:162
4577091270,4ptp4l441ktimers/322:39:593
2252376992725,1cyclictest0-21swapper/323:04:593
2252376992725,1cyclictest0-21swapper/322:20:593
2252376992724,2cyclictest0-21swapper/323:49:593
2252376992724,2cyclictest0-21swapper/319:10:143
2252376992720,5cyclictest2347560-21turbostat00:05:013
2252376992720,5cyclictest2347560-21turbostat00:05:003
225237699270,26cyclictest0-21swapper/300:12:003
2252373992724,2cyclictest0-21swapper/219:47:002
2252373992724,2cyclictest0-21swapper/219:27:592
4577091260,6ptp4l441ktimers/319:39:563
4577091260,5ptp4l61490irq/134-eno1-TxRx-000:25:003
4577091260,4ptp4l441ktimers/320:20:003
2252376992624,1cyclictest0-21swapper/322:59:003
2252376992624,1cyclictest0-21swapper/321:03:003
2252373992624,1cyclictest0-21swapper/222:49:592
2252373992623,2cyclictest0-21swapper/221:02:592
2252373992623,1cyclictest0-21swapper/219:53:592
225237399260,24cyclictest0-21swapper/220:01:002
4577091250,5ptp4l61490irq/134-eno1-TxRx-019:24:563
4577091250,4ptp4l61490irq/134-eno1-TxRx-022:09:563
4577091250,4ptp4l441ktimers/323:15:013
4577091250,4ptp4l441ktimers/321:39:563
4577091250,4ptp4l441ktimers/320:24:553
4577091250,4ptp4l441ktimers/300:10:013
4577091250,3ptp4l441ktimers/321:55:013
2252376992523,1cyclictest0-21swapper/320:50:133
2252376992520,4cyclictest2295786-21turbostat21:25:013
2252376992520,4cyclictest2295786-21turbostat21:25:013
2252373992523,1cyclictest0-21swapper/200:34:592
2252373992522,2cyclictest0-21swapper/223:33:592
225237399250,2cyclictest0-21swapper/221:20:592
225237399250,2cyclictest0-21swapper/221:20:592
4577091240,4ptp4l61490irq/134-eno1-TxRx-023:19:563
4577091240,4ptp4l61490irq/134-eno1-TxRx-023:19:553
4577091240,4ptp4l61490irq/134-eno1-TxRx-022:34:563
4577091240,4ptp4l61490irq/134-eno1-TxRx-020:29:563
4577091240,4ptp4l441ktimers/319:19:563
2252373992422,1cyclictest0-21swapper/221:45:002
2252373992421,2cyclictest0-21swapper/219:15:592
2252373992321,1cyclictest0-21swapper/222:14:592
2252373992320,2cyclictest0-21swapper/221:36:592
2252373992119,1cyclictest0-21swapper/219:55:162
2252373992118,2cyclictest0-21swapper/222:15:142
231999200,10rtkit-daemon688-21lldpd19:05:051
2252373992017,2cyclictest0-21swapper/220:37:592
2252373991614,1cyclictest0-21swapper/222:50:192
2252373991614,1cyclictest0-21swapper/220:34:562
2252373991613,2cyclictest0-21swapper/219:41:592
2252373991310,2cyclictest351rcuc/222:22:242
225237399107,2cyclictest351rcuc/200:38:382
22523739942,1cyclictest351rcuc/219:10:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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