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2026-04-24 - 16:39
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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 Fri Apr 24, 2026 12:45:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
32544211453,56sleep10-21swapper/107:07:371
32566210749,21sleep30-21swapper/307:07:553
3271929264,23sleep20-21swapper/207:09:502
3244428357,21sleep00-21swapper/007:06:180
142972700,3sleep320523-21stress11:25:153
142972700,3sleep320523-21stress11:25:143
4272560,1sleep120523-21stress10:51:071
4272560,1sleep120523-21stress10:51:071
368994415,26cyclictest0-21swapper/209:24:412
366994214,24cyclictest0-21swapper/010:44:320
368994115,23cyclictest0-21swapper/210:37:412
368994111,27cyclictest0-21swapper/210:40:072
366994114,24cyclictest0-21swapper/011:15:530
366994114,24cyclictest0-21swapper/010:55:290
366994114,24cyclictest0-21swapper/010:55:290
366994113,21cyclictest0-21swapper/008:04:000
36899409,28cyclictest0-21swapper/210:24:562
368994015,22cyclictest0-21swapper/209:26:562
368994013,24cyclictest0-21swapper/209:45:182
368994011,26cyclictest0-21swapper/209:35:132
366994017,20cyclictest0-21swapper/010:16:240
366994017,20cyclictest0-21swapper/010:16:240
366994015,22cyclictest0-21swapper/009:56:140
366994010,28cyclictest0-21swapper/011:31:590
366994010,28cyclictest0-21swapper/011:31:590
27592400,1sleep120523-21stress10:57:541
27592400,1sleep120523-21stress10:57:531
368993910,26cyclictest0-21swapper/211:11:262
366993915,21cyclictest0-21swapper/012:25:280
366993915,21cyclictest0-21swapper/009:50:410
366993915,21cyclictest0-21swapper/009:36:280
366993914,22cyclictest0-21swapper/011:50:400
269292394,32sleep20-21swapper/208:09:252
368993815,20cyclictest0-21swapper/210:55:052
368993815,20cyclictest0-21swapper/210:55:042
366993816,19cyclictest0-21swapper/012:01:190
366993815,21cyclictest0-21swapper/009:40:050
366993815,21cyclictest0-21swapper/009:40:050
366993815,12cyclictest0-21swapper/009:14:030
366993814,21cyclictest0-21swapper/011:37:190
366993814,21cyclictest0-21swapper/010:49:180
203172385,13sleep20-21swapper/209:08:282
115862385,13sleep20-21swapper/208:46:432
8802374,13sleep20-21swapper/208:23:332
73922375,13sleep10-21swapper/108:37:561
73672375,13sleep10-21swapper/107:21:321
53942375,13sleep10-21swapper/107:19:071
52732375,13sleep30-21swapper/307:17:373
50612375,13sleep30-21swapper/308:31:003
36899378,26cyclictest0-21swapper/209:55:152
36899377,27cyclictest0-21swapper/210:50:072
36899377,27cyclictest0-21swapper/210:50:072
368993710,24cyclictest0-21swapper/209:18:382
366993714,20cyclictest0-21swapper/012:22:580
366993714,20cyclictest0-21swapper/010:50:190
366993714,20cyclictest0-21swapper/010:50:190
366993713,21cyclictest0-21swapper/011:45:270
366993710,21cyclictest0-21swapper/009:00:370
29392375,13sleep30-21swapper/308:26:383
246402375,13sleep20-21swapper/208:02:312
182252375,13sleep30-21swapper/307:47:493
182252375,13sleep30-21swapper/307:47:483
139602374,13sleep20-21swapper/208:54:442
9752365,12sleep30-21swapper/308:24:333
36899366,27cyclictest0-21swapper/211:50:222
368993616,18cyclictest0-21swapper/210:45:082
368993614,19cyclictest0-21swapper/212:32:372
36799368,25cyclictest0-21swapper/108:20:101
366993616,14cyclictest0-21swapper/007:10:050
366993615,19cyclictest0-21swapper/010:08:310
366993615,18cyclictest0-21swapper/011:02:540
366993615,15cyclictest0-21swapper/007:49:220
366993615,15cyclictest0-21swapper/007:49:220
366993614,19cyclictest0-21swapper/010:20:090
366993613,20cyclictest0-21swapper/011:40:240
366993612,20cyclictest0-21swapper/009:15:060
366993610,23cyclictest0-21swapper/011:55:270
267492362,19sleep120523-21stress10:39:561
214042365,14sleep10-21swapper/107:55:161
182332365,13sleep10-21swapper/107:47:551
182332365,13sleep10-21swapper/107:47:551
161412365,13sleep00-21swapper/007:43:450
159102365,12sleep30-21swapper/308:57:023
158092364,12sleep20-21swapper/208:55:482
139512364,13sleep20-21swapper/207:38:342
136422365,12sleep10-21swapper/108:50:381
99832355,13sleep30-21swapper/308:45:113
369993511,21cyclictest0-21swapper/312:39:273
369993511,21cyclictest0-21swapper/312:39:273
36899358,24cyclictest0-21swapper/211:35:092
368993515,18cyclictest0-21swapper/211:20:252
368993515,18cyclictest0-21swapper/210:13:392
368993514,19cyclictest0-21swapper/209:30:272
368993514,18cyclictest0-21swapper/211:45:102
368993512,21cyclictest0-21swapper/212:35:042
368993512,21cyclictest0-21swapper/212:35:042
367993518,15cyclictest0-21swapper/108:33:411
36699356,22cyclictest0-21swapper/008:30:060
366993516,16cyclictest0-21swapper/011:10:300
366993515,15cyclictest0-21swapper/007:25:570
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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