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2026-06-20 - 15:02
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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 376 highest latencies:
System rackeslot6.osadl.org (updated Sat Jun 20, 2026 00:44:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
228534599130121,6cyclictest2367233-21latency_hist23:25:011
228534599130121,6cyclictest2367233-21latency_hist23:25:001
228534499129117,4cyclictest2310987-21kworker/u8:3+events_unbound20:45:010
228534499125119,4cyclictest2320711-21kworker/u8:3+events_unbound21:10:000
228534499124118,5cyclictest2351287-21kworker/u8:3+events_unbound22:35:010
228534499123114,6cyclictest2390619-21kworker/u8:0+events_unbound00:35:240
228534599119108,8cyclictest2309364-21latency_hist20:25:011
228534499118104,5cyclictest2325564-21kworker/u8:2+events_unbound21:35:010
228534499116109,5cyclictest2325564-21kworker/u8:2+flush-179:021:15:010
228534599114101,11cyclictest1213033-21systemd-journal00:03:591
228534499109104,4cyclictest2378421-21kworker/u8:3+events_unbound00:04:020
22853459910593,9cyclictest1213033-21systemd-journal00:35:011
228534599105101,3cyclictest2381663-21kworker/u8:2+events_unbound00:25:241
22853449910395,6cyclictest2373644-21kworker/u8:2+flush-179:023:50:220
22853459910196,4cyclictest2381663-21kworker/u8:2+events_unbound00:20:231
22853449910196,4cyclictest2310987-21kworker/u8:3+events_unbound20:35:200
22853459910096,3cyclictest2265880-21kworker/u8:0+events_unbound19:10:251
22853449910094,4cyclictest2320711-21kworker/u8:3+flush-179:021:20:010
2285344999993,4cyclictest2295018-21kworker/u8:0+events_unbound19:40:240
2285344999986,4cyclictest2336965-21kworker/u8:0+flush-179:022:45:140
2285344999789,6cyclictest2302734-21latency_hist20:05:010
2285344999789,5cyclictest2304303-21kworker/u8:0+events_unbound20:10:020
2285345999691,4cyclictest2310987-21kworker/u8:3+events_unbound20:40:251
2285345999691,4cyclictest2296402-21kworker/u8:2+flush-179:019:50:261
2285344999679,5cyclictest2265880-21kworker/u8:0+events_unbound19:10:140
2285345999590,4cyclictest2360845-21kworker/u8:1+events_unbound23:25:251
2285345999585,8cyclictest2289999-21latency_hist19:25:011
2285344999589,5cyclictest2336965-21kworker/u8:0+flush-179:023:00:310
2285344999589,4cyclictest2293156-21kworker/u8:3+events_unbound19:55:230
2285344999587,6cyclictest2368855-21kworker/u8:0+flush-179:023:35:260
2285344999490,3cyclictest2320711-21kworker/u8:3+flush-179:021:20:210
2285344999488,4cyclictest2325564-21kworker/u8:2+flush-179:021:45:100
2285344999479,5cyclictest2352889-21kworker/u8:1+events_unbound22:40:140
2285344999479,5cyclictest2351287-21kworker/u8:3+events_unbound22:35:130
2285345999388,4cyclictest2356122-21kworker/u8:2+events_unbound22:55:211
2285344999385,5cyclictest2365599-21kworker/u8:2+events_unbound23:30:130
2285344999380,9cyclictest2381606-21latency_hist00:10:010
2285344999380,9cyclictest2381606-21latency_hist00:10:010
2285344999377,6cyclictest2360845-21kworker/u8:1+events_unbound23:25:160
2285345999287,4cyclictest2360845-21kworker/u8:1+events_unbound23:15:221
2285344999283,6cyclictest2356122-21kworker/u8:2+events_unbound23:05:130
2285344999279,7cyclictest2325564-21kworker/u8:2+events_unbound21:40:190
2285344999279,7cyclictest2325564-21kworker/u8:2+events_unbound21:40:190
2285344999186,4cyclictest2317365-21kworker/u8:2+flush-179:020:50:210
2285344999180,9cyclictest2346804-21apt-get22:20:110
2285344999179,10cyclictest1213033-21systemd-journal21:40:000
2285344999178,4cyclictest2301783-21kworker/u8:1+events_unbound20:20:220
2285345999085,4cyclictest2310987-21kworker/u8:3+events_unbound20:45:191
2285345999085,3cyclictest2351287-21kworker/u8:3+flush-179:022:35:201
2285345998883,4cyclictest2304303-21kworker/u8:0+flush-179:020:10:261
2285345998883,3cyclictest2325564-21kworker/u8:2+flush-179:021:15:201
2285345998878,8cyclictest2301401-21apt-get20:00:111
2285344998881,4cyclictest2362689-21kworker/u8:0+events_unbound23:10:180
2285344998877,8cyclictest510-21rs:main0
2285345998779,6cyclictest2336965-21kworker/u8:0+flush-179:022:45:241
2285344998781,4cyclictest2378419-21kworker/u8:0+events_unbound00:10:030
2285344998674,4cyclictest2314104-21kworker/u8:1+events_unbound20:55:260
2285345998580,4cyclictest2362689-21kworker/u8:0+events_unbound23:10:251
2285344998579,4cyclictest2265880-21kworker/u8:0+events_unbound19:10:010
2285344998578,6cyclictest2320523-21kworker/u8:0+flush-179:021:00:210
2285345998480,3cyclictest2301783-21kworker/u8:1+events_unbound20:25:261
2285345998480,3cyclictest2301783-21kworker/u8:1+events_unbound20:25:261
2285345998479,4cyclictest2335179-21kworker/u8:3+events_unbound21:55:191
2285345998478,4cyclictest2352889-21kworker/u8:1+events_unbound22:50:121
2285344998378,4cyclictest2265880-21kworker/u8:0+events_unbound19:15:240
2285344998375,6cyclictest2360845-21kworker/u8:1+flush-179:023:15:200
2285345998278,3cyclictest2352889-21kworker/u8:1+flush-179:022:41:181
2285345998277,4cyclictest2341492-21kworker/u8:2+events_unbound22:10:251
2285345998273,6cyclictest2372009-21latency_hist23:40:011
2285344998277,4cyclictest2296402-21kworker/u8:2+events_unbound19:50:230
2285344998277,3cyclictest2336965-21kworker/u8:0+flush-179:022:10:210
2285345998177,3cyclictest2336965-21kworker/u8:0+events_unbound23:00:331
2285345998176,4cyclictest2360845-21kworker/u8:1+events_unbound23:05:211
2285345998176,4cyclictest2317365-21kworker/u8:2+events_unbound20:50:131
2285344998174,4cyclictest2352889-21kworker/u8:1+flush-179:022:50:190
2285344998168,4cyclictest2292887-21kworker/u8:1+flush-179:019:35:240
2285344998074,5cyclictest2265880-21kworker/u8:0+events_unbound19:25:230
2285345997975,3cyclictest2320711-21kworker/u8:3+events_unbound21:30:141
2285345997975,3cyclictest2292887-21kworker/u8:1+flush-179:019:34:551
2285345997974,4cyclictest2320523-21kworker/u8:0+events_unbound21:05:231
2285345997874,3cyclictest2341492-21kworker/u8:2+events_unbound22:08:371
2285345997874,3cyclictest2341492-21kworker/u8:2+events_unbound22:08:371
2285345997874,3cyclictest2320523-21kworker/u8:0+events_unbound21:02:361
2285345997869,7cyclictest1213033-21systemd-journal20:00:001
2285344997874,3cyclictest2381663-21kworker/u8:2+flush-179:000:15:240
2285344997764,4cyclictest2301783-21kworker/u8:1+events_unbound20:25:180
2285344997764,4cyclictest2301783-21kworker/u8:1+events_unbound20:25:180
2285345997672,3cyclictest2325564-21kworker/u8:2+events_unbound21:25:141
2285345997671,4cyclictest2325564-21kworker/u8:2+flush-179:021:24:581
2285345997671,4cyclictest2324984-21kworker/u8:1+events_unbound21:10:251
2285345997669,5cyclictest2312792-21apt-get20:35:111
2285344997672,3cyclictest2356122-21kworker/u8:2+flush-179:022:55:260
2285344997571,3cyclictest2338359-21kworker/u8:1+flush-179:022:00:200
2285344997562,11cyclictest1213033-21systemd-journal19:50:000
2285345997470,3cyclictest2386636-21kworker/u8:1+flush-179:000:39:561
2285345997470,3cyclictest2295018-21kworker/u8:0+flush-179:019:44:561
2285344997465,3cyclictest2368855-21kworker/u8:0+events_unbound23:45:220
2285345997369,3cyclictest2292887-21kworker/u8:1+flush-179:019:35:261
2285345997368,4cyclictest2336965-21kworker/u8:0+events_unbound21:50:361
2285345997368,4cyclictest2335179-21kworker/u8:3+events_unbound22:04:561
2285344997369,3cyclictest2306198-21kworker/u8:2+events_unbound20:30:240
2285344997368,3cyclictest2336965-21kworker/u8:0+events_unbound21:50:150
2285344997362,4cyclictest2381663-21kworker/u8:2+events_unbound00:25:200
2285345997268,3cyclictest2341492-21kworker/u8:2+events_unbound22:29:361
2285345997267,4cyclictest2368855-21kworker/u8:0+flush-179:023:40:251
2285345997264,3cyclictest2325564-21kworker/u8:2+events_unbound21:49:551
2285344997266,4cyclictest2325564-21kworker/u8:2+flush-179:021:25:190
2285344997261,7cyclictest1-21systemd00:35:010
2285345997167,3cyclictest2381663-21kworker/u8:2+events_unbound00:19:571
2285344997065,4cyclictest2336965-21kworker/u8:0+flush-179:022:15:240
2285344996965,3cyclictest2286853-21kworker/u8:2+events_unbound19:30:230
2285345996864,4cyclictest2368855-21kworker/u8:0+events_unbound23:45:201
2285345996863,4cyclictest2378419-21kworker/u8:0+flush-179:000:10:091
2285344996863,4cyclictest2335179-21kworker/u8:3+flush-179:022:05:210
2285344996863,4cyclictest2335179-21kworker/u8:3+flush-179:022:05:200
2285344996863,4cyclictest2286853-21kworker/u8:2+events_unbound19:20:390
2285344996857,8cyclictest2315987-21apt-get20:45:120
2285345996662,3cyclictest2376800-21kworker/u8:1+events_unbound23:58:181
2285345996662,3cyclictest2336965-21kworker/u8:0+events_unbound22:31:171
2285345996661,4cyclictest2310932-21kworker/u8:0+events_unbound20:30:361
2285345996661,4cyclictest2301783-21kworker/u8:1+events_unbound20:05:301
2285345996659,5cyclictest2265880-21kworker/u8:0+flush-179:019:30:001
2285345996656,7cyclictest1213033-21systemd-journal19:15:321
2285344996660,4cyclictest2371976-21kworker/u8:3+events_unbound23:40:180
2285345996560,4cyclictest2314104-21kworker/u8:1+events_unbound20:58:381
2285344996561,3cyclictest2301783-21kworker/u8:1+events_unbound20:05:280
2285344996559,4cyclictest2335179-21kworker/u8:3+flush-179:021:55:200
2285345996460,3cyclictest2376800-21kworker/u8:1+flush-179:000:09:471
2285345996460,3cyclictest2376800-21kworker/u8:1+flush-179:000:09:461
2285345996459,4cyclictest2301783-21kworker/u8:1+events_unbound20:16:361
2285345996359,3cyclictest2341492-21kworker/u8:2+events_unbound22:19:371
2285345996359,3cyclictest2293156-21kworker/u8:3+events_unbound19:47:371
2285345996358,4cyclictest2333516-21kworker/u8:0+events_unbound21:42:391
2285345996358,4cyclictest2333516-21kworker/u8:0+events_unbound21:42:381
2285344996357,4cyclictest2306198-21kworker/u8:2+flush-179:020:15:180
2285350996159,1cyclictest0-21swapper/321:20:003
2285350996159,1cyclictest0-21swapper/320:11:593
2285344996156,4cyclictest2381663-21kworker/u8:2+events_unbound00:20:210
2285344996156,4cyclictest2341492-21kworker/u8:2+events_unbound22:25:270
2285345995955,3cyclictest2325564-21kworker/u8:2+events_unbound21:35:171
2285345995854,3cyclictest2336965-21kworker/u8:0+events_unbound22:20:371
2285344995852,4cyclictest2360845-21kworker/u8:1+events_unbound23:20:100
2285344995852,4cyclictest2360845-21kworker/u8:1+events_unbound23:20:100
2285345995551,3cyclictest2373644-21kworker/u8:2+flush-179:023:50:021
2285350995452,1cyclictest0-21swapper/322:07:583
2285350995452,1cyclictest0-21swapper/322:07:583
2285349994946,2cyclictest0-21swapper/221:38:592
4577091480,13ptp4l61490irq/134-eno1-TxRx-019:10:003
2285345994641,4cyclictest2368855-21kworker/u8:0+events_unbound23:33:371
228535099450,37cyclictest2294788-21turbostat19:40:003
2285349994239,2cyclictest0-21swapper/220:41:592
228535099410,40cyclictest2322426-21turbostat21:05:003
228535099410,40cyclictest0-21swapper/300:16:593
228535099400,39cyclictest2386663-21turbostat00:25:003
228535099400,38cyclictest2362466-21turbostat23:10:003
228535099400,1cyclictest0-21swapper/300:12:593
2285349994036,2cyclictest0-21swapper/222:18:002
228535099390,4cyclictest2360873-21turbostat23:05:003
228535099390,38cyclictest2314137-21turbostat20:40:003
2285350993832,5cyclictest2346535-21turbostat22:19:593
228534999380,36cyclictest0-21swapper/220:36:592
2285350993732,4cyclictest2375191-21turbostat23:50:003
2285349993735,1cyclictest0-21swapper/200:00:002
2285349993734,2cyclictest0-21swapper/222:14:592
2285349993734,2cyclictest0-21swapper/220:31:002
228534999370,35cyclictest0-21swapper/223:21:002
228534999370,35cyclictest0-21swapper/223:20:592
228534999370,35cyclictest0-21swapper/219:58:592
2285350993634,1cyclictest0-21swapper/323:29:003
2285350993634,1cyclictest0-21swapper/321:45:003
2285350993634,1cyclictest0-21swapper/321:44:593
228535099360,35cyclictest0-21swapper/323:40:583
228535099360,35cyclictest0-21swapper/321:52:583
228535099360,35cyclictest0-21swapper/320:41:593
2285349993634,1cyclictest0-21swapper/222:55:012
228534999360,1cyclictest0-21swapper/220:19:552
2285350993533,1cyclictest0-21swapper/322:12:593
2285350993533,1cyclictest0-21swapper/321:39:583
2285350993533,1cyclictest0-21swapper/300:39:593
2285349993532,2cyclictest0-21swapper/223:46:592
228534999350,1cyclictest0-21swapper/200:22:592
2285350993432,1cyclictest0-21swapper/322:49:563
2285350993432,1cyclictest0-21swapper/319:34:593
2285349993431,1cyclictest0-21swapper/220:30:012
2285349993431,1cyclictest0-21swapper/220:30:012
4577091330,4ptp4l441ktimers/320:25:003
2285350993331,1cyclictest0-21swapper/320:48:003
2285350993331,1cyclictest0-21swapper/300:29:593
2285349993330,2cyclictest0-21swapper/223:19:592
2285349993330,2cyclictest0-21swapper/221:21:592
2285349993330,2cyclictest0-21swapper/219:42:592
2285349993330,2cyclictest0-21swapper/200:39:552
2285349993229,2cyclictest0-21swapper/222:02:002
2285349993229,2cyclictest0-21swapper/221:33:002
2285349993229,2cyclictest0-21swapper/219:47:002
2285350993129,1cyclictest0-21swapper/319:23:593
2285350993128,2cyclictest0-21swapper/319:43:593
2285349993128,2cyclictest0-21swapper/223:10:582
2285349993128,2cyclictest0-21swapper/220:51:592
2285349993128,2cyclictest0-21swapper/220:22:592
228534999310,23cyclictest0-21swapper/200:19:542
4577091300,7ptp4l441ktimers/321:10:003
2285350993028,1cyclictest0-21swapper/322:32:593
2285350993028,1cyclictest0-21swapper/321:10:593
228535099300,29cyclictest0-21swapper/319:59:593
2285349993027,2cyclictest0-21swapper/220:07:592
2285349993027,2cyclictest0-21swapper/219:24:562
2285349993027,2cyclictest0-21swapper/200:25:022
228534999300,29cyclictest0-21swapper/200:30:122
228534999300,28cyclictest0-21swapper/221:05:142
228534999300,28cyclictest0-21swapper/221:00:002
228534999300,28cyclictest0-21swapper/200:10:022
4577091290,6ptp4l441ktimers/322:59:593
2285350992926,2cyclictest0-21swapper/321:25:113
228535099290,27cyclictest0-21swapper/321:55:133
228535099290,27cyclictest0-21swapper/320:50:103
228535099290,27cyclictest0-21swapper/319:15:123
2285349992927,1cyclictest0-21swapper/223:30:002
2285349992926,2cyclictest0-21swapper/222:20:122
2285349992926,2cyclictest0-21swapper/221:50:132
2285349992926,2cyclictest0-21swapper/221:19:002
2285349992926,2cyclictest0-21swapper/200:07:002
2285349992926,2cyclictest0-21swapper/200:06:592
228534999290,2cyclictest0-21swapper/221:25:102
228534999290,27cyclictest0-21swapper/223:00:122
228534999290,27cyclictest0-21swapper/222:30:122
228534999290,27cyclictest0-21swapper/222:05:042
228534999290,27cyclictest0-21swapper/222:05:032
228534999290,27cyclictest0-21swapper/221:55:132
228534999290,27cyclictest0-21swapper/219:30:132
228534999290,27cyclictest0-21swapper/219:10:592
228534999290,27cyclictest0-21swapper/200:00:122
4577091280,7ptp4l441ktimers/323:15:003
4577091280,7ptp4l441ktimers/300:00:003
4577091280,6ptp4l441ktimers/320:20:003
4577091280,5ptp4l441ktimers/322:55:003
2285350992826,1cyclictest0-21swapper/300:04:563
2285350992825,2cyclictest0-21swapper/300:30:123
2285350992823,4cyclictest2381620-21turbostat00:10:003
2285350992823,4cyclictest2381620-21turbostat00:10:003
228535099280,26cyclictest0-21swapper/322:25:133
228535099280,26cyclictest0-21swapper/320:30:133
2285349992825,2cyclictest0-21swapper/221:49:002
2285349992825,2cyclictest0-21swapper/220:10:012
2285349992825,2cyclictest0-21swapper/219:50:592
228534999280,2cyclictest0-21swapper/219:15:122
4577091270,7ptp4l441ktimers/322:45:013
4577091270,6ptp4l61490irq/134-eno1-TxRx-021:35:013
4577091270,6ptp4l61490irq/134-eno1-TxRx-019:49:563
4577091270,6ptp4l441ktimers/321:25:003
4577091270,5ptp4l61490irq/134-eno1-TxRx-021:50:013
4577091270,5ptp4l441ktimers/323:55:003
4577091270,5ptp4l441ktimers/322:05:013
4577091270,5ptp4l441ktimers/319:30:003
2285350992725,1cyclictest0-21swapper/323:34:553
2285350992725,1cyclictest0-21swapper/320:25:123
2285350992725,1cyclictest0-21swapper/320:25:123
228535099270,26cyclictest0-21swapper/319:14:593
2285349992724,2cyclictest0-21swapper/222:59:592
2285349992724,2cyclictest0-21swapper/221:04:002
228534999270,24cyclictest0-21swapper/220:49:552
228534999270,1cyclictest0-21swapper/223:54:002
4577091260,5ptp4l61490irq/134-eno1-TxRx-020:09:553
4577091260,5ptp4l441ktimers/323:19:563
4577091260,5ptp4l441ktimers/322:39:553
4577091260,5ptp4l441ktimers/320:59:563
4577091260,4ptp4l441ktimers/320:05:013
4577091260,4ptp4l441ktimers/319:54:553
2285350992625,1cyclictest0-21swapper/323:20:593
2285350992625,1cyclictest0-21swapper/323:20:593
2285350992624,1cyclictest0-21swapper/323:35:593
2285350992624,1cyclictest0-21swapper/322:20:123
2285349992623,2cyclictest0-21swapper/222:38:592
2285349992623,2cyclictest0-21swapper/219:28:592
228534999260,24cyclictest0-21swapper/223:35:132
228534999260,24cyclictest0-21swapper/223:09:592
228534999260,23cyclictest0-21swapper/222:44:542
2285349992523,1cyclictest0-21swapper/220:04:592
2285349992522,2cyclictest0-21swapper/223:42:592
2285349992421,2cyclictest0-21swapper/222:28:582
2285345992317,4cyclictest0-21swapper/119:10:011
2285349992219,2cyclictest0-21swapper/223:32:592
2285349992219,1cyclictest0-21swapper/219:39:592
2285349991411,2cyclictest0-21swapper/222:46:592
2285349991411,2cyclictest0-21swapper/221:44:552
2285349991411,2cyclictest0-21swapper/221:44:552
22853499996,2cyclictest0-21swapper/221:13:582
22853499920,1cyclictest0-21swapper/219:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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