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2026-09-23 - 02:17
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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 rack7slot1.osadl.org (updated Tue Sep 22, 2026 12:45:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2260212054,61sleep30-21swapper/307:05:053
4276211654,57sleep00-21swapper/007:09:530
3973211351,23sleep10-21swapper/107:06:111
3974210850,22sleep20-21swapper/207:06:132
20672860,3sleep326516-21stress11:50:303
286062710,1sleep326518-21stress11:39:353
4403994410,31cyclictest0-21swapper/011:03:130
205302420,1sleep226516-21stress10:05:432
4403994116,22cyclictest0-21swapper/009:19:180
4403994111,27cyclictest0-21swapper/009:40:140
4403994015,23cyclictest0-21swapper/010:55:350
4403994014,23cyclictest0-21swapper/010:50:270
4403994011,26cyclictest0-21swapper/012:25:010
4403994011,26cyclictest0-21swapper/012:25:000
4403994010,27cyclictest0-21swapper/011:19:370
85932395,13sleep10-21swapper/108:30:011
4403993916,20cyclictest0-21swapper/011:26:220
4403993910,26cyclictest0-21swapper/011:55:170
76622385,13sleep30-21swapper/307:15:043
4406993813,23cyclictest0-21swapper/309:00:123
440499383,21cyclictest0-21swapper/110:39:551
440499383,21cyclictest0-21swapper/110:39:551
4403993817,19cyclictest0-21swapper/011:20:050
4403993811,24cyclictest0-21swapper/010:45:320
4403993810,25cyclictest0-21swapper/011:35:210
4403993810,25cyclictest0-21swapper/009:50:210
40152385,13sleep30-21swapper/308:18:563
262662385,13sleep20-21swapper/209:08:122
199352385,13sleep10-21swapper/107:40:201
119542385,14sleep20-21swapper/208:35:202
93672375,13sleep20-21swapper/207:17:002
93062375,13sleep10-21swapper/107:16:141
62892375,13sleep10-21swapper/108:23:401
440599374,23cyclictest0-21swapper/211:35:192
4403993710,24cyclictest0-21swapper/011:10:110
322272375,13sleep30-21swapper/308:10:023
248782375,13sleep10-21swapper/107:50:481
238312375,13sleep10-21swapper/109:00:561
238222375,13sleep20-21swapper/209:00:502
182802375,13sleep30-21swapper/307:36:503
172942374,13sleep00-21swapper/008:47:200
116182375,13sleep30-21swapper/307:22:313
115602375,13sleep00-21swapper/007:21:430
84402365,12sleep10-21swapper/108:28:131
4405993615,19cyclictest0-21swapper/212:02:422
4404993611,17cyclictest0-21swapper/107:45:201
440399369,24cyclictest0-21swapper/010:10:190
440399367,26cyclictest0-21swapper/012:30:240
4403993615,19cyclictest0-21swapper/011:45:020
4403993615,19cyclictest0-21swapper/011:45:020
4403993610,24cyclictest0-21swapper/012:25:040
318562365,12sleep30-21swapper/308:09:103
226682365,13sleep00-21swapper/007:46:330
218102365,13sleep10-21swapper/108:58:161
194072365,13sleep00-21swapper/008:51:050
182152364,13sleep00-21swapper/007:35:580
178222365,12sleep30-21swapper/308:50:123
174352365,13sleep10-21swapper/108:48:581
160852365,13sleep00-21swapper/007:32:250
115202365,13sleep20-21swapper/207:21:132
60082354,13sleep00-21swapper/008:20:290
4406993515,18cyclictest0-21swapper/311:45:483
4406993515,18cyclictest0-21swapper/311:45:483
4406993513,20cyclictest0-21swapper/307:40:093
4406993513,19cyclictest0-21swapper/309:39:473
4406993510,23cyclictest0-21swapper/307:45:233
4405993515,18cyclictest0-21swapper/212:32:132
440499358,25cyclictest0-21swapper/107:30:571
440399356,26cyclictest0-21swapper/009:20:290
216872355,12sleep30-21swapper/308:56:453
149782355,12sleep00-21swapper/008:41:280
149782355,12sleep00-21swapper/008:41:270
106982355,10sleep20-21swapper/208:33:352
85292345,10sleep30-21swapper/308:29:193
82732344,12sleep00-21swapper/008:26:110
440699348,24cyclictest0-21swapper/308:20:233
440599344,19cyclictest0-21swapper/212:06:012
4405993416,15cyclictest0-21swapper/209:10:182
4405993412,19cyclictest0-21swapper/210:15:022
440499348,24cyclictest0-21swapper/107:36:571
4403993416,16cyclictest0-21swapper/012:03:550
4403993413,18cyclictest0-21swapper/009:30:370
4403993411,21cyclictest0-21swapper/011:30:190
38032345,10sleep20-21swapper/208:16:422
293342345,10sleep10-21swapper/108:01:221
273202345,10sleep20-21swapper/207:58:422
271742345,10sleep10-21swapper/107:56:531
262312345,10sleep30-21swapper/309:07:443
185452345,10sleep20-21swapper/207:39:582
160642345,10sleep20-21swapper/207:32:112
129642345,10sleep10-21swapper/108:39:111
110902345,10sleep30-21swapper/308:35:043
65152335,10sleep10-21swapper/107:13:461
440699339,22cyclictest0-21swapper/308:32:553
440699338,23cyclictest0-21swapper/308:45:233
4406993312,18cyclictest0-21swapper/311:09:333
4406993312,18cyclictest0-21swapper/311:09:333
4406993311,20cyclictest0-21swapper/307:50:133
440599335,22cyclictest0-21swapper/207:25:112
440599335,12cyclictest0-21swapper/211:41:262
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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