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2026-04-20 - 04:13
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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 Mon Apr 20, 2026 00:45:37)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2228921580,5sleep20-21swapper/221:35:252
1858699823,77cyclictest0-21swapper/222:40:282
18585996916,16cyclictest8771-21chrt19:56:151
18585996914,11cyclictest4772-21chrt22:09:461
1858499697,6cyclictest134691getstats22:50:080
18585996816,16cyclictest31989-21chrt19:37:141
18585996815,15cyclictest28349-21chrt00:08:321
18585996814,9cyclictest29863-21seq20:42:191
18585996716,15cyclictest30502-21chrt00:11:491
18585996614,11cyclictest13545-21taskset21:15:451
18585996612,11cyclictest302092sleep123:02:411
134491660,4ptp4l28350-21apt-get23:00:142
18585996516,16cyclictest25298-21chrt21:43:341
18585996515,11cyclictest16292-21chrt23:42:041
18585996515,11cyclictest11310-21taskset20:04:001
18585996514,12cyclictest18743-21taskset23:46:161
18585996514,12cyclictest1317-21runrttasks22:14:421
18585996514,11cyclictest13636-21chrt20:06:021
18585996416,16cyclictest18150-21taskset21:25:371
18585996416,16cyclictest11510-21chrt23:30:401
134491640,3ptp4l17724-21ntp_states22:35:233
18585996315,15cyclictest25276-21chrt20:32:421
18585996314,11cyclictest1317-21runrttasks20:18:491
18585996313,10cyclictest20300-21chrt19:10:301
18585996312,11cyclictest5882sleep100:19:401
1858599629,18cyclictest15475-21systemctl21:20:261
18585996217,16cyclictest5189-21chrt00:28:181
18585996215,16cyclictest16243-21chrt22:33:371
18585996215,15cyclictest27881-21chrt22:57:321
18585996215,15cyclictest23255-21chrt22:49:541
18585996215,11cyclictest30118-21seq21:53:441
18585996214,12cyclictest1317-21runrttasks20:21:171
18585996214,10cyclictest25485-21taskset22:51:221
18585996214,10cyclictest22839-21chrt20:25:561
18584996212,10cyclictest1317-21runrttasks20:57:040
18586996133,8cyclictest33-21ksoftirqd/223:55:152
18585996116,16cyclictest32221-21chrt20:48:061
18585996115,15cyclictest6648-21chrt19:53:261
18585996115,15cyclictest4427-21chrt19:49:251
18585996112,10cyclictest276742chrt21:49:321
18584996113,12cyclictest1317-21runrttasks00:13:360
18585996015,10cyclictest7383-21chrt00:31:591
18585996015,10cyclictest22801-21chrt19:18:001
18585996015,10cyclictest22801-21chrt19:18:001
18585996015,10cyclictest2054-21chrt19:44:041
18585996014,11cyclictest32601-21taskset20:50:071
18585996013,11cyclictest4612-21cat20:59:551
18585996013,11cyclictest1317-21runrttasks22:39:341
18585996012,10cyclictest32189-21seq21:55:531
18584996017,11cyclictest11533-21taskset22:22:440
18584996015,10cyclictest6626-21taskset21:01:020
18584996012,11cyclictest1317-21runrttasks23:33:090
18584996012,11cyclictest1317-21runrttasks21:21:070
18584996012,11cyclictest1317-21runrttasks20:29:240
18584996012,11cyclictest1317-21runrttasks00:26:520
18584996012,10cyclictest1317-21runrttasks23:44:530
18584996012,10cyclictest1317-21runrttasks22:00:540
18584996011,11cyclictest1317-21runrttasks00:05:500
18586995926,7cyclictest33-21ksoftirqd/223:25:012
18585995919,10cyclictest4844-21seq23:18:441
18585995916,16cyclictest11424-21chrt22:21:251
18585995915,11cyclictest21013-21chrt23:50:581
18585995914,11cyclictest22914-21seq21:37:401
18585995913,10cyclictest1317-21runrttasks21:12:481
1858499599,12cyclictest0-21swapper/021:19:270
18584995917,10cyclictest16263-21taskset22:33:510
18584995911,11cyclictest1317-21runrttasks22:12:130
134491590,4ptp4l0-21swapper/121:00:191
18585995816,16cyclictest9145-21chrt22:16:521
18585995816,16cyclictest23447-21chrt23:57:411
18585995816,10cyclictest13717-21taskset22:25:431
18585995815,10cyclictest32485-21taskset23:07:231
18585995815,10cyclictest20778-21chrt21:34:441
1858499589,10cyclictest0-21swapper/022:05:090
18584995817,11cyclictest2884-21seq00:23:120
18584995816,11cyclictest25078-21taskset21:40:480
18584995813,11cyclictest1317-21runrttasks23:28:320
18584995813,11cyclictest1317-21runrttasks19:58:030
18584995813,10cyclictest1317-21runrttasks23:59:290
18584995812,10cyclictest1317-21runrttasks19:22:440
18584995811,10cyclictest0-21swapper/019:27:110
18584995810,10cyclictest1317-21runrttasks00:37:430
18584995810,10cyclictest0-21swapper/000:31:180
18585995715,17cyclictest29662-21chrt19:31:521
18585995714,11cyclictest2602-21seq23:14:271
18585995714,10cyclictest2103-21taskset22:00:431
18585995713,11cyclictest1317-21runrttasks20:36:061
1858499579,10cyclictest0-21swapper/022:55:030
1858499579,10cyclictest0-21swapper/020:49:470
1858499578,9cyclictest0-21swapper/022:37:130
1858499578,10cyclictest0-21swapper/020:01:000
18584995713,9cyclictest4938-21cat23:19:560
18584995712,11cyclictest1317-21runrttasks22:42:050
18584995712,11cyclictest1317-21runrttasks21:13:120
18584995712,10cyclictest6921-21seq23:20:410
18584995712,10cyclictest1317-21runrttasks19:30:020
18584995711,10cyclictest0-21swapper/020:35:550
18586995624,5cyclictest33-21ksoftirqd/220:25:192
18585995615,10cyclictest7860-21chrt00:35:081
1858499569,44cyclictest0-21swapper/021:50:250
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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