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2026-04-05 - 12:37
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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 100 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
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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