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2026-04-05 - 05:21
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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 highest latencies:
System rackdslot1.osadl.org (updated Sun Apr 05, 2026 00:45:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1546321580,6sleep3721899cyclictest22:55:183
721699749,19cyclictest12952-21ntpq19:20:211
134491700,4ptp4l0-21swapper/221:23:592
7216996911,16cyclictest30837-21chrt22:20:061
7216996911,16cyclictest30837-21chrt22:20:061
134491690,4ptp4l16563-21ls00:05:272
134491680,3ptp4l3163-21apt-get22:30:123
134491650,4ptp4l5315-21apt-get21:25:123
134491640,5ptp4l0-21swapper/320:40:173
721699639,11cyclictest15413-21taskset20:35:191
721699637,11cyclictest117552chrt21:37:281
134491630,4ptp4l0-21swapper/220:26:492
7216996112,16cyclictest9772-21chrt22:44:161
7216996112,16cyclictest21742-21chrt00:18:001
7216996011,16cyclictest5205-21taskset22:34:571
7216996010,16cyclictest18986-21chrt23:01:461
7216996010,15cyclictest32595-21chrt21:12:341
721599609,10cyclictest3227-21taskset23:39:280
134491600,9ptp4l6915-21seq19:09:521
134491600,12ptp4l0-21swapper/320:35:203
721699599,11cyclictest7571-21seq23:45:581
721699599,11cyclictest15968-21seq19:27:021
721699599,10cyclictest30376-21chrt21:09:171
721699598,12cyclictest1317-21runrttasks19:55:351
7216995912,11cyclictest9667-21seq20:24:181
7216995912,11cyclictest25288-21seq19:45:481
7216995912,11cyclictest23137-21seq22:00:431
7216995912,11cyclictest20992-21seq19:39:461
7216995912,11cyclictest20992-21seq19:39:461
7216995911,16cyclictest2412-21chrt21:15:551
134491590,4ptp4l0-21swapper/219:20:122
134491590,4ptp4l0-21swapper/219:18:402
721699589,10cyclictest12056-21seq22:49:081
721699588,14cyclictest20568-21cat21:55:261
7216995810,11cyclictest7282-21taskset20:18:251
7216995810,11cyclictest7153-21chrt22:35:331
721599588,11cyclictest16451-21seq21:48:320
134491580,4ptp4l0-21swapper/120:25:181
134491580,3ptp4l0-21swapper/300:10:243
134491580,3ptp4l0-21swapper/220:51:292
721699579,11cyclictest1317-21runrttasks00:39:121
721699578,11cyclictest1858-21needreboot22:25:201
7216995712,11cyclictest18761-21seq20:42:521
7216995711,11cyclictest28077-21taskset21:04:181
7216995711,11cyclictest14781-21seq00:04:421
7216995710,12cyclictest16274-21seq21:46:181
7216995710,11cyclictest19575-21chrt00:14:431
721599578,11cyclictest1317-21runrttasks19:28:430
721599572,12cyclictest2318-21gnome-shell21:30:270
134491570,4ptp4l0-21swapper/221:32:142
134491570,3ptp4l0-21swapper/323:20:013
134491570,3ptp4l0-21swapper/321:20:283
134491570,3ptp4l0-21swapper/223:00:252
7216995612,11cyclictest27735-21seq22:10:461
7216995610,16cyclictest11232-21chrt19:15:321
7216995610,11cyclictest25849-21taskset19:50:041
7216995610,10cyclictest21260-21taskset19:40:031
134491560,4ptp4l0-21swapper/323:51:043
134491560,4ptp4l0-21swapper/322:35:113
134491560,4ptp4l0-21swapper/319:30:313
134491560,4ptp4l0-21swapper/221:15:222
134491560,3ptp4l0-21swapper/322:27:253
134491560,3ptp4l0-21swapper/219:11:372
721699555,10cyclictest32584-21sed23:30:261
721699553,50cyclictest11391-21kworker/1:020:11:281
7216995512,17cyclictest32275-21chrt20:01:041
7216995512,16cyclictest25959-21chrt23:17:461
7216995512,10cyclictest21024-21seq20:47:301
7216995511,11cyclictest3525-21taskset23:40:061
7216995510,11cyclictest7339-21seq21:29:411
721599557,11cyclictest1317-21runrttasks22:30:560
134491550,5ptp4l0-21swapper/323:43:213
134491550,4ptp4l0-21swapper/320:27:023
134491550,4ptp4l0-21swapper/320:19:043
134491550,4ptp4l0-21swapper/319:29:593
134491550,4ptp4l0-21swapper/319:21:183
134491550,4ptp4l0-21swapper/300:03:073
134491550,4ptp4l0-21swapper/221:44:392
134491550,3ptp4l0-21swapper/221:13:132
7216995412,15cyclictest28804-21chrt00:32:191
7216995411,12cyclictest14153-21seq21:43:291
7216995411,11cyclictest2469-21taskset20:09:041
7216995411,11cyclictest24211-21taskset00:22:191
721599549,10cyclictest1317-21runrttasks21:57:130
721599548,7cyclictest9346-21users20:20:280
721599548,11cyclictest1317-21runrttasks22:23:050
721599548,11cyclictest1317-21runrttasks22:23:050
721599548,11cyclictest1317-21runrttasks20:09:150
721599548,10cyclictest9283-21cat19:14:560
721599547,11cyclictest1317-21runrttasks23:52:550
721599547,10cyclictest1317-21runrttasks20:47:050
134491540,4ptp4l0-21swapper/323:55:143
134491540,4ptp4l0-21swapper/323:55:143
134491540,4ptp4l0-21swapper/322:18:533
134491540,4ptp4l0-21swapper/321:31:293
134491540,4ptp4l0-21swapper/321:18:033
134491540,4ptp4l0-21swapper/319:42:263
134491540,3ptp4l0-21swapper/322:23:473
134491540,3ptp4l0-21swapper/322:23:463
134491540,3ptp4l0-21swapper/321:03:053
721699539,11cyclictest25665-21seq20:58:051
721699539,11cyclictest14098-21chrt20:32:171
7216995312,16cyclictest14117-21seq22:51:131
7216995312,16cyclictest14117-21seq22:51:131
7216995311,11cyclictest16835-21taskset22:58:491
7216995311,10cyclictest21396-21chrt23:08:081
7216995310,11cyclictest28319-21chrt23:23:161
7216995310,11cyclictest1317-21runrttasks20:51:431
721599539,7cyclictest10477-21iostat21:35:190
721599538,13cyclictest27304-21sendmail_mailqu22:10:230
721599537,11cyclictest1317-21runrttasks21:24:330
134491530,5ptp4l0-21swapper/323:01:353
134491530,4ptp4l10134-21egrep22:45:152
134491530,4ptp4l0-21swapper/321:41:003
134491530,4ptp4l0-21swapper/319:48:353
134491530,4ptp4l0-21swapper/220:41:272
134491530,3ptp4l0-21swapper/321:51:563
134491530,3ptp4l0-21swapper/321:51:553
134491530,3ptp4l0-21swapper/320:20:263
721699529,10cyclictest0-21swapper/123:10:291
7216995211,11cyclictest16859-21seq00:06:551
721599528,11cyclictest1317-21runrttasks00:30:340
721599527,11cyclictest1317-21runrttasks23:59:500
721599527,11cyclictest1317-21runrttasks23:59:490
721599527,11cyclictest1317-21runrttasks22:05:350
721599527,10cyclictest1317-21runrttasks21:19:540
721599526,9cyclictest0-21swapper/021:03:460
721599526,9cyclictest0-21swapper/020:43:330
721599526,10cyclictest0-21swapper/023:44:090
721599525,11cyclictest1317-21runrttasks22:41:550
134491520,4ptp4l0-21swapper/323:32:263
134491520,3ptp4l0-21swapper/323:28:473
134491520,3ptp4l0-21swapper/323:28:473
134491520,3ptp4l0-21swapper/322:54:503
134491520,3ptp4l0-21swapper/322:54:503
134491520,3ptp4l0-21swapper/320:31:393
134491520,3ptp4l0-21swapper/320:08:483
721699518,10cyclictest0-21swapper/119:14:451
7216995112,10cyclictest26538-21seq00:27:421
721599517,9cyclictest0-21swapper/021:05:350
721599517,11cyclictest1317-21runrttasks22:03:390
721599517,10cyclictest1317-21runrttasks23:03:080
721599517,10cyclictest0-21swapper/021:26:170
721599516,10cyclictest0-21swapper/020:32:420
721599514,10cyclictest7358-21cat23:45:270
227472510,4sleep20-21swapper/223:10:202
134491510,5ptp4l0-21swapper/019:06:250
134491510,4ptp4l0-21swapper/322:05:203
134491510,4ptp4l0-21swapper/321:39:473
134491510,10ptp4l0-21swapper/300:07:483
721599508,11cyclictest1317-21runrttasks19:43:300
721599507,10cyclictest1317-21runrttasks20:17:530
721599504,11cyclictest0-21swapper/021:51:410
721599504,11cyclictest0-21swapper/021:51:410
721599503,10cyclictest0-21swapper/022:46:080
134491500,4ptp4l0-21swapper/323:08:583
134491500,11ptp4l9096-21meminfo23:50:212
721599497,10cyclictest0-21swapper/023:09:150
134491490,9ptp4l0-21swapper/322:12:513
134491490,4ptp4l0-21swapper/323:39:463
134491490,4ptp4l0-21swapper/319:36:173
134491490,4ptp4l0-21swapper/319:36:173
721699485,16cyclictest24945-21ps22:05:251
721599484,10cyclictest0-21swapper/020:25:260
134491480,4ptp4l0-21swapper/323:45:493
134491480,4ptp4l0-21swapper/322:43:573
134491480,4ptp4l0-21swapper/321:08:003
134491480,4ptp4l0-21swapper/319:17:343
721699478,10cyclictest0-21swapper/121:32:401
721599476,10cyclictest0-21swapper/022:50:570
721599476,10cyclictest0-21swapper/022:50:570
721599475,9cyclictest0-21swapper/022:27:070
721599474,16cyclictest2318-21gnome-shell19:55:250
721599474,11cyclictest0-21swapper/020:51:430
134491470,4ptp4l0-21swapper/323:15:043
134491470,3ptp4l0-21swapper/321:48:163
134491470,3ptp4l0-21swapper/220:39:552
7216994610,10cyclictest9839-21chrt23:50:361
7216994610,10cyclictest30141-21chrt22:17:091
7216994610,10cyclictest18761-21chrt21:53:411
7216994610,10cyclictest18761-21chrt21:53:411
7216994610,10cyclictest18554-21taskset19:32:571
721599464,9cyclictest0-21swapper/019:38:500
721599464,9cyclictest0-21swapper/019:38:500
721599464,10cyclictest0-21swapper/019:30:030
134491460,4ptp4l0-21swapper/221:47:062
134491460,10ptp4l0-21swapper/023:32:120
7217994539,3cyclictest33-21ksoftirqd/222:30:002
721599455,11cyclictest0-21swapper/000:02:280
134491450,4ptp4l12376-21apt-get22:50:132
134491450,4ptp4l12376-21apt-get22:50:122
134491450,4ptp4l0-21swapper/300:21:523
134491450,10ptp4l0-21swapper/222:10:352
134491450,10ptp4l0-21swapper/021:44:040
721799448,6cyclictest33-21ksoftirqd/223:00:002
7217994439,3cyclictest33-21ksoftirqd/222:40:002
7217994433,9cyclictest33-21ksoftirqd/200:10:262
721599448,8cyclictest0-21swapper/019:15:170
134491440,4ptp4l0-21swapper/321:12:523
134491440,4ptp4l0-21swapper/320:57:063
134491440,4ptp4l0-21swapper/222:33:142
134491440,3ptp4l0-21swapper/220:09:562
134491440,10ptp4l0-21swapper/222:16:392
7217994338,3cyclictest33-21ksoftirqd/200:40:002
7217994337,3cyclictest33-21ksoftirqd/220:15:002
721599436,6cyclictest0-21swapper/019:46:250
721599434,10cyclictest0-21swapper/020:04:260
721599433,13cyclictest29168-21irqstats22:15:180
134491430,5ptp4l0-21swapper/023:10:190
134491430,4ptp4l19625-21dump-pmu-power00:15:000
134491430,4ptp4l0-21swapper/323:13:483
134491430,4ptp4l0-21swapper/320:47:313
134491430,4ptp4l0-21swapper/320:10:263
134491430,4ptp4l0-21swapper/223:57:522
134491430,4ptp4l0-21swapper/223:57:512
134491430,4ptp4l0-21swapper/223:15:412
134491430,10ptp4l0-21swapper/223:39:072
7217994237,2cyclictest33-21ksoftirqd/223:09:592
721599427,10cyclictest32705-21seq21:13:560
134491420,9ptp4l0-21swapper/022:56:130
134491420,4ptp4l31005-21apt-get23:30:132
134491420,4ptp4l2306-21ntp_states23:35:211
134491420,4ptp4l22595-21ntp_states20:50:243
7217994137,2cyclictest33-21ksoftirqd/221:40:002
7217994136,3cyclictest33-21ksoftirqd/219:30:002
721599415,9cyclictest0-21swapper/023:17:250
134491410,6ptp4l1301-21snmpd00:20:442
134491410,5ptp4l721799cyclictest20:15:132
134491410,5ptp4l0-21swapper/223:45:232
134491410,5ptp4l0-21swapper/221:50:232
134491410,5ptp4l0-21swapper/221:50:232
134491410,5ptp4l0-21swapper/221:25:212
134491410,5ptp4l0-21swapper/221:05:212
134491410,5ptp4l0-21swapper/220:20:232
134491410,5ptp4l0-21swapper/219:55:202
134491410,5ptp4l0-21swapper/023:25:120
134491410,5ptp4l0-21swapper/023:25:120
134491410,5ptp4l0-21swapper/023:20:340
134491410,5ptp4l0-21swapper/019:20:200
134491410,5ptp4l0-21swapper/000:09:430
134491410,4ptp4l24681-21apt-get00:25:112
134491410,4ptp4l21435-21apt-get22:00:122
134491410,4ptp4l10085-21apt-get22:45:133
134491410,4ptp4l0-21swapper/300:16:433
134491410,4ptp4l0-21swapper/022:37:530
134491410,4ptp4l0-21swapper/000:16:450
134491410,3ptp4l0-21swapper/220:56:352
721799404,4cyclictest33-21ksoftirqd/219:53:162
7217994035,3cyclictest33-21ksoftirqd/219:25:162
7217994030,9cyclictest33-21ksoftirqd/219:40:252
134491400,5ptp4l0-21swapper/220:45:312
134491400,5ptp4l0-21swapper/219:45:162
134491400,5ptp4l0-21swapper/121:20:211
134491400,5ptp4l0-21swapper/019:50:280
134491400,5ptp4l0-21swapper/000:25:380
134491400,4ptp4l0-21swapper/320:00:203
134491400,4ptp4l0-21swapper/319:55:573
134491400,4ptp4l0-21swapper/319:12:303
134491400,4ptp4l0-21swapper/223:26:302
134491400,4ptp4l0-21swapper/223:26:302
134491400,4ptp4l0-21swapper/223:20:072
134491400,4ptp4l0-21swapper/222:42:582
134491400,4ptp4l0-21swapper/221:55:112
134491400,4ptp4l0-21swapper/020:55:450
134491400,4ptp4l0-21swapper/020:35:090
134491400,4ptp4l0-21swapper/020:10:330
134491400,4ptp4l0-21swapper/000:38:000
134491400,4ptp4l0-21swapper/000:20:120
134491400,3ptp4l30378-21apt-get22:20:022
134491400,3ptp4l30378-21apt-get22:20:022
7216993911,19cyclictest30741-21seq23:29:531
7216993911,19cyclictest30741-21seq23:29:521
134491390,4ptp4l0-21swapper/319:50:193
134491390,4ptp4l0-21swapper/223:40:422
134491390,4ptp4l0-21swapper/222:05:172
134491390,4ptp4l0-21swapper/220:30:192
134491390,4ptp4l0-21swapper/220:03:352
134491390,4ptp4l0-21swapper/200:15:232
134491390,3ptp4l13879-21ntpq00:00:222
134491390,3ptp4l0-21swapper/300:25:253
134491390,3ptp4l0-21swapper/221:04:132
134491390,3ptp4l0-21swapper/219:37:342
134491390,3ptp4l0-21swapper/219:37:342
7216993812,12cyclictest12290-21seq23:57:321
7216993812,12cyclictest12290-21seq23:57:321
134491380,4ptp4l26964-21/usr/sbin/munin00:30:262
134491380,4ptp4l0-21swapper/322:00:263
134491380,4ptp4l0-21swapper/300:35:153
134491380,4ptp4l0-21swapper/300:31:543
134491380,3ptp4l0-21swapper/321:55:233
137891286,13phc2sys4881-21apt-get19:05:122
46198230,17rtkit-daemon41-21ksoftirqd/319:07:313
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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