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2026-03-10 - 14:27
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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
Characteristics of the 792 highest latencies:
System rackdslot1.osadl.org (updated Tue Mar 10, 2026 00:45:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2699221540,8sleep1300799cyclictest21:10:171
2968521360,4sleep0300699cyclictest22:25:160
3008997829,4cyclictest33-21ksoftirqd/219:59:592
3007997616,17cyclictest16966-21chrt21:55:291
300699747,24cyclictest13526-21irqrtprio23:00:200
3007997116,16cyclictest21850-21chrt21:00:021
3007997017,17cyclictest10551-21chrt00:02:301
3007996916,17cyclictest24015-21taskset23:22:061
3007996916,16cyclictest30676-21chrt21:15:381
3008996825,4cyclictest33-21ksoftirqd/222:45:202
3007996816,15cyclictest25989-21chrt19:59:121
300699681,29cyclictest2318-21gnome-shell20:39:590
3007996715,11cyclictest21385-21taskset19:49:001
3007996710,18cyclictest10234-21sed19:25:131
3008996633,4cyclictest33-21ksoftirqd/223:40:132
3007996616,11cyclictest14977-21chrt23:04:531
300699661,26cyclictest10785-21cut19:25:180
3008996531,6cyclictest33-21ksoftirqd/219:54:592
3008996524,3cyclictest33-21ksoftirqd/222:35:002
3007996515,15cyclictest21716-21taskset23:17:181
300699650,30cyclictest30835-21seq21:17:330
3008996433,4cyclictest33-21ksoftirqd/223:47:042
3008996433,4cyclictest33-21ksoftirqd/220:20:162
3008996432,4cyclictest33-21ksoftirqd/221:50:172
3008996432,4cyclictest33-21ksoftirqd/221:35:252
3008996429,5cyclictest33-21ksoftirqd/223:50:022
3007996416,10cyclictest7799-21chrt21:38:411
3007996415,15cyclictest21733-21chrt22:06:441
3007996413,11cyclictest1317-21runrttasks20:27:591
3007996411,16cyclictest17852-21cstates22:00:131
300699641,26cyclictest563-21runrttasks21:20:420
300699640,25cyclictest3981-21sed22:40:120
3009996327,3cyclictest41-21ksoftirqd/322:35:203
3008996326,9cyclictest33-21ksoftirqd/222:00:192
3008996322,4cyclictest33-21ksoftirqd/219:45:282
3007996317,16cyclictest7734-21chrt22:45:441
3007996314,11cyclictest1317-21runrttasks20:13:151
300699632,19cyclictest0-21swapper/021:40:160
300699631,26cyclictest448-21dbus-daemon20:20:250
300699630,27cyclictest25902-21runrttasks21:06:020
300699630,27cyclictest16464-21runrttasks19:35:480
298422630,2sleep329845-21processes20:05:243
3008996230,4cyclictest33-21ksoftirqd/222:55:222
3008996230,4cyclictest33-21ksoftirqd/222:10:262
3008996230,4cyclictest33-21ksoftirqd/222:05:172
3008996229,3cyclictest33-21ksoftirqd/223:00:262
3007996216,10cyclictest9922-21taskset21:41:171
3007996214,11cyclictest1317-21runrttasks23:57:111
3007996214,10cyclictest1317-21runrttasks23:50:061
3007996210,12cyclictest2793-21sed22:35:271
300699620,27cyclictest19474-21runrttasks22:02:150
300699620,24cyclictest28510-21sed20:04:590
300999619,7cyclictest41-21ksoftirqd/322:48:193
3008996138,3cyclictest33-21ksoftirqd/222:18:592
300799619,16cyclictest18753-21timerandwakeup20:50:281
3007996114,10cyclictest1317-21runrttasks20:33:481
3007996112,15cyclictest18564-21cat23:10:211
3007996112,14cyclictest28124-21basename23:30:251
3007996112,14cyclictest23216-21cat22:10:221
300699614,27cyclictest32496-21latency23:40:190
300699612,23cyclictest0-21swapper/020:16:290
300699610,28cyclictest1053-21seq22:34:470
300699610,23cyclictest19465-21swap00:20:240
3008996028,4cyclictest33-21ksoftirqd/200:30:152
3008996026,4cyclictest33-21ksoftirqd/221:00:222
3008996021,6cyclictest33-21ksoftirqd/221:10:252
3007996017,16cyclictest28214-21chrt20:02:571
3007996015,15cyclictest3107-21chrt20:19:341
3007996015,11cyclictest3000-21chrt21:26:131
3007996014,11cyclictest1317-21runrttasks00:24:161
3007996014,10cyclictest7184-21seq19:17:261
3007996013,11cyclictest1317-21runrttasks00:31:211
300699602,22cyclictest0-21swapper/023:35:420
300699600,30cyclictest24493-21seq00:31:460
300699600,28cyclictest22387-21seq00:29:080
300699600,27cyclictest30547-21runrttasks20:08:250
3009995927,4cyclictest41-21ksoftirqd/321:39:593
3008995929,4cyclictest33-21ksoftirqd/220:00:242
3008995925,3cyclictest33-21ksoftirqd/223:20:142
3007995915,15cyclictest11992-21chrt20:35:291
3007995915,12cyclictest15447-21chrt00:13:491
3007995914,12cyclictest5170-21runrttasks20:21:211
300699590,30cyclictest19600-21seq23:14:360
300699590,27cyclictest21694-21runrttasks22:06:160
300699590,26cyclictest7323-21runrttasks19:19:150
134491590,5ptp4l9-21ksoftirqd/020:58:040
134491590,5ptp4l0-21swapper/319:30:123
134491590,4ptp4l0-21swapper/021:10:230
3009995821,9cyclictest41-21ksoftirqd/300:25:003
3008995831,9cyclictest33-21ksoftirqd/222:44:592
3008995831,3cyclictest33-21ksoftirqd/220:55:232
3008995829,3cyclictest33-21ksoftirqd/220:26:372
3008995825,4cyclictest33-21ksoftirqd/219:35:002
3008995821,2cyclictest0-21swapper/223:07:342
3008995814,5cyclictest33-21ksoftirqd/200:25:242
3007995817,16cyclictest23629-21seq19:53:211
3007995816,11cyclictest30980-21runrttasks23:38:031
3007995815,11cyclictest14482-21chrt20:42:401
3007995814,10cyclictest17143-21taskset23:08:141
300699582,23cyclictest0-21swapper/021:52:210
300699580,28cyclictest12514-21runrttasks22:58:020
300699580,27cyclictest19248-21runrttasks20:54:150
300699580,25cyclictest12695-21seq00:05:350
158912580,3sleep20-21swapper/221:55:192
3009995722,4cyclictest41-21ksoftirqd/319:50:013
3008995728,5cyclictest33-21ksoftirqd/223:19:092
3008995728,3cyclictest33-21ksoftirqd/219:10:222
3007995716,10cyclictest30449-21chrt20:07:101
300699570,25cyclictest24168-21taskset22:13:280
300699570,25cyclictest23284-21ls19:50:270
134491570,4ptp4l0-21swapper/019:55:150
3009995627,4cyclictest41-21ksoftirqd/321:05:273
3009995624,6cyclictest41-21ksoftirqd/321:22:583
3009995622,4cyclictest41-21ksoftirqd/321:30:133
3009995621,7cyclictest41-21ksoftirqd/323:42:283
3008995643,3cyclictest33-21ksoftirqd/222:30:002
3008995628,5cyclictest33-21ksoftirqd/221:42:332
3008995625,4cyclictest33-21ksoftirqd/223:58:582
3008995625,4cyclictest33-21ksoftirqd/220:35:232
3008995623,4cyclictest33-21ksoftirqd/200:05:012
3008995622,4cyclictest33-21ksoftirqd/200:11:072
3008995615,4cyclictest33-21ksoftirqd/223:35:242
3007995616,11cyclictest17609-21chrt00:17:111
3007995615,10cyclictest21377-21chrt20:57:091
3007995615,10cyclictest10274-21chrt22:53:471
3007995614,7cyclictest12674-21users00:05:271
300699560,28cyclictest23839-21seq21:03:580
3009995519,9cyclictest41-21ksoftirqd/323:30:013
3009995519,9cyclictest41-21ksoftirqd/323:30:003
3009995519,11cyclictest41-21ksoftirqd/319:25:193
3008995525,4cyclictest33-21ksoftirqd/223:32:282
3008995522,4cyclictest33-21ksoftirqd/220:35:012
3008995520,4cyclictest33-21ksoftirqd/222:37:502
3007995514,10cyclictest22441-21taskset00:29:501
3007995511,14cyclictest808-21runrttasks21:23:381
300699550,25cyclictest21477-21sed23:15:270
134491550,4ptp4l300999cyclictest19:10:193
134491550,3ptp4l0-21swapper/221:16:072
3009995425,3cyclictest41-21ksoftirqd/321:25:173
3009995423,3cyclictest41-21ksoftirqd/323:10:233
3009995421,4cyclictest41-21ksoftirqd/323:30:153
3009995420,8cyclictest41-21ksoftirqd/323:35:143
3009995415,3cyclictest41-21ksoftirqd/321:10:273
3008995432,10cyclictest33-21ksoftirqd/222:25:002
3008995427,4cyclictest33-21ksoftirqd/220:16:172
3008995417,8cyclictest33-21ksoftirqd/221:30:262
3007995416,15cyclictest884-21chrt23:40:321
3007995415,10cyclictest3412-21chrt23:47:181
3007995414,16cyclictest9345-21chrt19:20:321
3007995414,15cyclictest1317-21runrttasks23:27:231
3007995414,15cyclictest1317-21runrttasks23:27:231
3007995412,11cyclictest4909-21runrttasks19:12:471
300699542,22cyclictest0-21swapper/023:48:100
300699540,26cyclictest7758-21seq20:30:000
134491540,4ptp4l0-21swapper/221:05:112
3009995337,4cyclictest41-21ksoftirqd/323:19:593
3009995322,10cyclictest41-21ksoftirqd/321:50:003
3009995321,4cyclictest41-21ksoftirqd/321:50:153
3009995320,3cyclictest41-21ksoftirqd/300:00:003
3009995318,7cyclictest41-21ksoftirqd/322:51:213
3009995318,4cyclictest41-21ksoftirqd/322:20:013
3009995316,6cyclictest41-21ksoftirqd/323:20:263
3009995314,6cyclictest41-21ksoftirqd/319:35:153
3009995312,9cyclictest41-21ksoftirqd/319:24:593
3008995327,4cyclictest33-21ksoftirqd/200:39:582
300699532,21cyclictest0-21swapper/023:07:300
300699530,20cyclictest134491ptp4l21:25:040
134491530,5ptp4l0-21swapper/221:20:132
134491530,4ptp4l0-21swapper/220:07:032
134491530,4ptp4l0-21swapper/219:19:272
3009995237,4cyclictest41-21ksoftirqd/321:05:003
3009995222,9cyclictest41-21ksoftirqd/300:05:003
3009995221,4cyclictest41-21ksoftirqd/300:30:173
3009995220,4cyclictest41-21ksoftirqd/321:15:233
3009995220,4cyclictest41-21ksoftirqd/320:50:233
3009995218,7cyclictest41-21ksoftirqd/322:03:573
3009995213,9cyclictest41-21ksoftirqd/322:40:203
3007995215,15cyclictest31167-21taskset22:29:381
3007995211,6cyclictest27283-21perl22:20:161
300699524,24cyclictest716-21runrttasks20:14:420
300699520,25cyclictest11630-21ls21:45:210
134491520,3ptp4l0-21swapper/223:28:102
134491520,3ptp4l0-21swapper/223:28:092
134491520,10ptp4l573-21apt-get19:05:122
3009995125,3cyclictest41-21ksoftirqd/300:07:303
3009995120,4cyclictest41-21ksoftirqd/323:05:253
3009995118,7cyclictest41-21ksoftirqd/322:22:223
3009995118,3cyclictest41-21ksoftirqd/320:30:173
3009995115,4cyclictest41-21ksoftirqd/320:20:253
3009995113,7cyclictest41-21ksoftirqd/320:29:443
3008995117,4cyclictest33-21ksoftirqd/221:50:012
3007995115,10cyclictest19059-21chrt19:43:351
3007995114,15cyclictest12589-21taskset21:48:111
3007995110,7cyclictest14004-21ls21:50:211
300699512,20cyclictest0-21swapper/022:52:450
300699510,23cyclictest4060-21date19:10:250
134491510,4ptp4l0-21swapper/323:02:173
134491510,4ptp4l0-21swapper/320:17:273
134491510,4ptp4l0-21swapper/220:43:342
3009995033,4cyclictest41-21ksoftirqd/322:35:013
3009995033,4cyclictest41-21ksoftirqd/320:55:193
3009995018,4cyclictest41-21ksoftirqd/322:55:153
3009995018,3cyclictest41-21ksoftirqd/323:45:263
3009995018,3cyclictest41-21ksoftirqd/319:50:153
3009994919,4cyclictest41-21ksoftirqd/320:45:263
3009994917,3cyclictest41-21ksoftirqd/321:40:183
3009994916,4cyclictest41-21ksoftirqd/322:05:183
3008994926,10cyclictest33-21ksoftirqd/223:10:172
3008994916,3cyclictest33-21ksoftirqd/200:07:422
3008994915,8cyclictest33-21ksoftirqd/200:15:132
300699492,19cyclictest0-21swapper/022:48:550
300699491,24cyclictest26198-21proc_pri00:35:250
300699490,27cyclictest1782-21/usr/sbin/munin22:35:160
134491490,4ptp4l0-21swapper/320:40:153
300999484,3cyclictest121rcu_preempt00:10:273
3009994834,4cyclictest41-21ksoftirqd/322:10:233
3009994816,4cyclictest41-21ksoftirqd/319:40:253
3009994814,4cyclictest41-21ksoftirqd/321:55:243
3009994814,3cyclictest41-21ksoftirqd/319:15:123
3008994838,3cyclictest33-21ksoftirqd/221:30:012
3008994833,3cyclictest33-21ksoftirqd/219:40:192
3008994814,9cyclictest33-21ksoftirqd/219:20:242
300699482,18cyclictest0-21swapper/019:33:160
134491480,4ptp4l0-21swapper/222:51:182
134491480,4ptp4l0-21swapper/220:54:302
134491480,4ptp4l0-21swapper/220:11:282
134491480,4ptp4l0-21swapper/219:26:242
3009994728,4cyclictest41-21ksoftirqd/322:28:383
3009994717,4cyclictest41-21ksoftirqd/300:40:003
3007994715,16cyclictest14081-21taskset19:32:191
300699470,25cyclictest1922-21Xorg19:45:250
3009994631,3cyclictest41-21ksoftirqd/319:55:253
300999462,3cyclictest0-21swapper/300:15:193
3009994616,3cyclictest41-21ksoftirqd/320:00:243
3009994614,4cyclictest41-21ksoftirqd/320:35:343
3009994612,8cyclictest41-21ksoftirqd/320:10:073
3008994633,3cyclictest33-21ksoftirqd/200:20:262
300699460,22cyclictest3005-21cyclictest20:47:130
134491460,6ptp4l0-21swapper/319:08:103
134491460,3ptp4l0-21swapper/219:39:382
300699458,24cyclictest26290-21taskset22:16:190
300699452,19cyclictest0-21swapper/021:30:090
300699450,25cyclictest1317-21runrttasks22:21:070
300999441,2cyclictest121rcu_preempt23:50:453
3008994426,9cyclictest33-21ksoftirqd/220:45:282
134491440,5ptp4l0-21swapper/019:06:130
3009994329,6cyclictest41-21ksoftirqd/300:25:243
3007994316,15cyclictest16461-21chrt19:35:451
3007994315,16cyclictest26918-21chrt00:38:201
3007994315,16cyclictest12317-21chrt22:55:351
3007994315,15cyclictest26482-21taskset22:18:411
300699432,20cyclictest0-21swapper/019:23:040
134491430,4ptp4l27362-21iostat23:30:170
134491430,3ptp4l2318-21gnome-shell19:40:590
3007994215,8cyclictest5493-21chrt22:41:271
3007994215,11cyclictest16621-21chrt20:45:441
300799420,11cyclictest0-21swapper/121:07:471
300699422,29cyclictest0-21swapper/023:50:250
300699420,25cyclictest17157-21expr00:15:260
134491420,5ptp4l22417-21df23:20:150
134491420,5ptp4l15850-21iostat_ios21:55:180
300699410,27cyclictest8077-21taskset23:58:100
134491410,9ptp4l0-21swapper/020:31:320
134491410,5ptp4l0-21swapper/122:30:151
300699402,20cyclictest0-21swapper/000:01:010
134491400,5ptp4l0-21swapper/119:05:481
134491400,4ptp4l0-21swapper/021:35:240
134491400,3ptp4l14069-21iostat_ios00:10:180
134491390,4ptp4l25493-21sort23:25:210
134491390,4ptp4l25493-21sort23:25:210
134491390,4ptp4l0-21swapper/020:42:340
134491380,3ptp4l0-21swapper/121:31:391
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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