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2026-04-20 - 22:22
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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 792 highest latencies:
System rackdslot4.osadl.org (updated Mon Apr 20, 2026 12:45:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
51842205167,26sleep20-21swapper/207:08:562
138591203169,23phc2sys0-21swapper/307:08:293
49522201172,19sleep00-21swapper/007:05:560
49042201168,22sleep10-21swapper/107:05:281
1570321560,6sleep2556999cyclictest10:45:132
1570321560,6sleep2556999cyclictest10:45:132
1882821380,5sleep3557099cyclictest10:50:193
78302670,1sleep20-21swapper/210:30:012
5570996230,8cyclictest41-21ksoftirqd/311:20:253
5570996230,8cyclictest41-21ksoftirqd/309:55:153
5570995830,8cyclictest41-21ksoftirqd/307:55:163
5570995827,4cyclictest41-21ksoftirqd/311:35:213
5570995728,9cyclictest41-21ksoftirqd/309:35:263
5570995725,4cyclictest41-21ksoftirqd/309:30:173
5570995627,8cyclictest41-21ksoftirqd/307:45:233
5570995627,4cyclictest41-21ksoftirqd/312:00:193
5570995627,3cyclictest41-21ksoftirqd/312:40:013
5570995626,8cyclictest41-21ksoftirqd/312:20:253
5570995626,4cyclictest41-21ksoftirqd/309:25:253
5570995626,3cyclictest41-21ksoftirqd/311:10:253
5570995625,6cyclictest41-21ksoftirqd/307:25:133
5570995624,8cyclictest41-21ksoftirqd/308:50:253
5570995624,8cyclictest41-21ksoftirqd/308:50:253
5570995624,4cyclictest41-21ksoftirqd/308:40:253
5570995618,12cyclictest41-21ksoftirqd/309:20:013
138491560,1ptp4l401ktimersoftd/308:20:133
5570995529,6cyclictest41-21ksoftirqd/308:00:123
5570995525,4cyclictest41-21ksoftirqd/311:05:203
5570995525,4cyclictest41-21ksoftirqd/309:20:253
5570995525,4cyclictest41-21ksoftirqd/308:35:193
5570995524,8cyclictest41-21ksoftirqd/308:05:133
5570995524,4cyclictest41-21ksoftirqd/310:55:183
5570995522,8cyclictest41-21ksoftirqd/309:00:153
5570995521,8cyclictest41-21ksoftirqd/310:15:163
5570995521,8cyclictest41-21ksoftirqd/310:15:163
5570995521,4cyclictest41-21ksoftirqd/308:15:023
276732550,3sleep00-21swapper/010:05:000
5570995427,4cyclictest41-21ksoftirqd/307:35:133
5570995426,4cyclictest41-21ksoftirqd/310:25:003
5570995425,4cyclictest41-21ksoftirqd/310:34:593
5570995425,3cyclictest41-21ksoftirqd/309:40:263
5570995425,3cyclictest41-21ksoftirqd/309:05:183
5570995424,4cyclictest41-21ksoftirqd/311:50:183
5570995424,3cyclictest41-21ksoftirqd/312:05:183
5570995423,8cyclictest41-21ksoftirqd/311:40:193
5570995423,7cyclictest41-21ksoftirqd/307:35:013
5570995420,4cyclictest41-21ksoftirqd/310:10:193
5570995419,4cyclictest41-21ksoftirqd/307:40:203
5570995325,4cyclictest41-21ksoftirqd/308:10:233
5570995324,7cyclictest41-21ksoftirqd/307:15:123
5570995324,7cyclictest41-21ksoftirqd/307:15:123
5570995324,4cyclictest41-21ksoftirqd/312:25:123
5570995324,4cyclictest41-21ksoftirqd/309:10:193
5570995324,4cyclictest41-21ksoftirqd/308:30:123
5570995323,4cyclictest41-21ksoftirqd/311:19:503
5570995323,11cyclictest41-21ksoftirqd/310:05:193
5570995322,7cyclictest41-21ksoftirqd/310:35:163
5570995322,4cyclictest41-21ksoftirqd/312:30:143
5570995319,4cyclictest41-21ksoftirqd/309:50:153
5570995221,4cyclictest41-21ksoftirqd/311:55:203
5570995217,6cyclictest41-21ksoftirqd/307:10:153
5570995121,8cyclictest41-21ksoftirqd/308:55:143
5570995120,4cyclictest41-21ksoftirqd/312:10:153
5570995119,4cyclictest41-21ksoftirqd/312:15:143
5570995119,4cyclictest41-21ksoftirqd/310:00:253
5570995020,3cyclictest41-21ksoftirqd/311:45:253
41952500,2sleep10-21swapper/112:30:261
557099495,3cyclictest41-21ksoftirqd/311:00:113
5570994932,4cyclictest41-21ksoftirqd/307:20:193
5570994919,10cyclictest41-21ksoftirqd/311:30:133
5570994916,4cyclictest41-21ksoftirqd/308:45:273
557099484,7cyclictest41-21ksoftirqd/310:45:233
557099484,7cyclictest41-21ksoftirqd/310:45:233
5570994819,7cyclictest41-21ksoftirqd/311:25:153
5570994717,3cyclictest41-21ksoftirqd/308:25:133
5570994615,10cyclictest41-21ksoftirqd/309:45:153
5570994615,10cyclictest41-21ksoftirqd/309:45:153
5570994613,4cyclictest41-21ksoftirqd/307:50:273
5570994517,3cyclictest41-21ksoftirqd/310:40:153
5570994431,3cyclictest41-21ksoftirqd/310:25:173
5569993935,2cyclictest33-21ksoftirqd/209:20:012
5569993934,3cyclictest33-21ksoftirqd/208:40:002
556899392,34cyclictest223-21systemd-journal10:25:001
556899390,38cyclictest0-21swapper/108:36:121
5567993932,4cyclictest25089-21cron07:50:000
5569993834,2cyclictest33-21ksoftirqd/212:20:012
5569993833,3cyclictest33-21ksoftirqd/207:40:012
5569993826,9cyclictest33-21ksoftirqd/211:58:222
556899380,1cyclictest0-21swapper/110:47:541
556899380,1cyclictest0-21swapper/110:47:541
5567993823,5cyclictest9-21ksoftirqd/007:15:270
5567993823,5cyclictest9-21ksoftirqd/007:15:270
5569993732,3cyclictest33-21ksoftirqd/211:20:002
5569993732,3cyclictest33-21ksoftirqd/211:00:002
5569993732,3cyclictest33-21ksoftirqd/208:10:122
5569993732,3cyclictest33-21ksoftirqd/207:25:132
5569993732,2cyclictest33-21ksoftirqd/207:40:152
5567993732,3cyclictest223-21systemd-journal10:00:000
648523630,2sleep09-21ksoftirqd/009:20:240
5569993631,3cyclictest33-21ksoftirqd/209:00:112
5569993630,4cyclictest33-21ksoftirqd/212:01:432
5569993630,4cyclictest33-21ksoftirqd/208:49:592
5569993630,3cyclictest33-21ksoftirqd/207:30:192
5569993629,4cyclictest33-21ksoftirqd/209:08:462
5569993625,9cyclictest33-21ksoftirqd/209:45:232
5569993625,9cyclictest33-21ksoftirqd/209:45:222
5568993630,4cyclictest25-21ksoftirqd/111:04:171
5567993630,4cyclictest9-21ksoftirqd/009:26:560
5567993629,4cyclictest9-21ksoftirqd/010:34:370
5567993629,4cyclictest9-21ksoftirqd/007:23:530
50798360,2rtkit-daemon0-21swapper/211:03:422
5569993530,3cyclictest33-21ksoftirqd/212:05:172
5569993530,3cyclictest33-21ksoftirqd/208:40:122
5569993529,4cyclictest33-21ksoftirqd/211:14:372
5569993529,4cyclictest33-21ksoftirqd/210:45:002
5569993529,4cyclictest33-21ksoftirqd/210:31:302
5569993529,4cyclictest33-21ksoftirqd/207:24:352
5569993529,3cyclictest33-21ksoftirqd/209:40:012
5569993529,3cyclictest33-21ksoftirqd/208:30:012
5569993529,3cyclictest33-21ksoftirqd/207:54:592
5569993528,4cyclictest33-21ksoftirqd/208:51:502
5569993528,4cyclictest33-21ksoftirqd/208:51:502
5569993524,9cyclictest33-21ksoftirqd/211:25:262
5568993530,3cyclictest25-21ksoftirqd/109:10:111
5568993529,4cyclictest25-21ksoftirqd/111:32:431
5568993529,4cyclictest25-21ksoftirqd/107:36:171
5568993529,3cyclictest25-21ksoftirqd/111:45:171
5568993529,3cyclictest25-21ksoftirqd/111:30:011
5568993529,3cyclictest25-21ksoftirqd/107:55:151
5567993529,4cyclictest9-21ksoftirqd/010:15:420
5567993529,4cyclictest9-21ksoftirqd/010:15:420
5567993528,4cyclictest9-21ksoftirqd/012:20:400
5567993528,4cyclictest9-21ksoftirqd/009:45:340
5567993528,4cyclictest9-21ksoftirqd/009:45:330
5569993430,2cyclictest33-21ksoftirqd/210:23:072
5569993429,3cyclictest33-21ksoftirqd/212:23:272
5569993429,3cyclictest33-21ksoftirqd/209:55:002
5569993429,3cyclictest33-21ksoftirqd/207:15:002
5569993428,4cyclictest33-21ksoftirqd/211:43:562
5569993427,4cyclictest33-21ksoftirqd/210:01:092
5568993429,3cyclictest25-21ksoftirqd/111:59:241
5568993428,4cyclictest25-21ksoftirqd/110:55:391
5568993428,4cyclictest25-21ksoftirqd/110:42:201
5568993428,4cyclictest25-21ksoftirqd/110:30:151
5568993428,4cyclictest25-21ksoftirqd/109:58:031
5568993428,4cyclictest25-21ksoftirqd/109:33:241
556899340,2cyclictest121rcu_preempt07:15:271
556899340,2cyclictest121rcu_preempt07:15:271
5567993428,4cyclictest9-21ksoftirqd/010:50:320
5567993428,4cyclictest9-21ksoftirqd/009:18:550
5567993428,4cyclictest9-21ksoftirqd/008:51:180
5567993428,4cyclictest9-21ksoftirqd/008:51:180
5567993428,4cyclictest9-21ksoftirqd/008:44:290
5567993427,4cyclictest9-21ksoftirqd/009:51:510
5567993427,4cyclictest9-21ksoftirqd/008:16:000
5569993329,2cyclictest33-21ksoftirqd/211:50:192
5569993328,3cyclictest33-21ksoftirqd/211:30:182
5569993328,3cyclictest33-21ksoftirqd/210:35:202
5569993328,3cyclictest33-21ksoftirqd/210:20:002
5569993328,3cyclictest33-21ksoftirqd/210:20:002
5569993328,3cyclictest33-21ksoftirqd/210:13:032
5569993328,3cyclictest33-21ksoftirqd/207:17:322
5569993328,3cyclictest33-21ksoftirqd/207:17:322
5569993327,4cyclictest33-21ksoftirqd/212:27:022
5569993327,4cyclictest33-21ksoftirqd/208:32:512
5569993327,4cyclictest33-21ksoftirqd/208:06:322
5569993326,5cyclictest33-21ksoftirqd/212:12:222
5568993328,3cyclictest25-21ksoftirqd/110:02:311
5568993328,3cyclictest25-21ksoftirqd/108:31:581
5568993327,4cyclictest25-21ksoftirqd/112:11:571
5568993327,4cyclictest25-21ksoftirqd/110:14:391
5568993327,3cyclictest25-21ksoftirqd/110:30:001
5567993328,3cyclictest9-21ksoftirqd/012:15:240
5567993327,4cyclictest9-21ksoftirqd/008:49:460
5567993327,4cyclictest9-21ksoftirqd/007:53:450
5567993327,4cyclictest9-21ksoftirqd/007:40:060
5567993327,4cyclictest9-21ksoftirqd/007:38:290
5567993326,4cyclictest9-21ksoftirqd/011:19:090
5567993326,4cyclictest9-21ksoftirqd/008:58:490
5569993229,2cyclictest33-21ksoftirqd/208:00:192
5569993227,3cyclictest33-21ksoftirqd/212:36:292
5569993227,3cyclictest33-21ksoftirqd/212:30:192
5569993227,3cyclictest33-21ksoftirqd/209:40:192
5569993226,4cyclictest33-21ksoftirqd/211:46:162
5569993226,4cyclictest33-21ksoftirqd/208:19:282
5569993220,10cyclictest33-21ksoftirqd/207:45:242
556899324,25cyclictest23910-21processes12:05:221
5568993227,3cyclictest25-21ksoftirqd/110:09:591
5568993227,3cyclictest25-21ksoftirqd/109:00:001
5568993226,4cyclictest25-21ksoftirqd/111:19:391
5568993226,4cyclictest25-21ksoftirqd/111:13:251
5568993226,4cyclictest25-21ksoftirqd/107:52:591
5568993225,4cyclictest25-21ksoftirqd/110:54:471
556899322,28cyclictest0-21swapper/107:45:331
5567993227,3cyclictest9-21ksoftirqd/012:02:450
5567993227,3cyclictest9-21ksoftirqd/010:37:170
5567993226,4cyclictest9-21ksoftirqd/012:25:330
5567993226,4cyclictest9-21ksoftirqd/012:08:150
5567993226,4cyclictest9-21ksoftirqd/011:45:450
5567993226,4cyclictest9-21ksoftirqd/009:08:200
5567993225,4cyclictest9-21ksoftirqd/009:43:060
92702310,2sleep20-21swapper/211:35:232
5569993125,3cyclictest33-21ksoftirqd/210:50:192
5569993120,9cyclictest33-21ksoftirqd/209:20:272
5569993120,9cyclictest33-21ksoftirqd/209:10:292
556999310,2cyclictest121rcu_preempt08:25:002
5568993127,2cyclictest25-21ksoftirqd/109:18:131
5568993126,3cyclictest25-21ksoftirqd/111:40:441
5568993126,3cyclictest25-21ksoftirqd/109:52:421
5568993125,4cyclictest25-21ksoftirqd/111:38:241
5568993125,4cyclictest25-21ksoftirqd/109:25:221
5568993125,4cyclictest25-21ksoftirqd/109:04:111
5568993125,4cyclictest25-21ksoftirqd/108:06:221
5568993125,4cyclictest25-21ksoftirqd/107:29:121
5568993125,3cyclictest25-21ksoftirqd/112:20:261
5567993126,3cyclictest9-21ksoftirqd/011:25:000
5567993126,3cyclictest9-21ksoftirqd/011:10:300
5567993126,3cyclictest9-21ksoftirqd/008:37:390
5567993126,3cyclictest9-21ksoftirqd/008:23:210
5567993125,4cyclictest9-21ksoftirqd/011:01:110
5567993125,4cyclictest9-21ksoftirqd/009:39:290
5567993125,4cyclictest9-21ksoftirqd/009:11:200
5567993125,4cyclictest9-21ksoftirqd/008:12:470
5567993125,4cyclictest9-21ksoftirqd/008:08:140
5567993125,4cyclictest9-21ksoftirqd/007:55:010
5567993125,4cyclictest9-21ksoftirqd/007:30:510
5567993125,4cyclictest9-21ksoftirqd/007:14:550
5567993124,4cyclictest9-21ksoftirqd/010:21:280
5569993025,3cyclictest33-21ksoftirqd/211:07:572
5569993025,3cyclictest33-21ksoftirqd/210:05:202
5569993025,3cyclictest33-21ksoftirqd/209:00:012
5568993025,3cyclictest25-21ksoftirqd/109:40:471
5568993024,4cyclictest25-21ksoftirqd/109:38:201
5568993024,4cyclictest25-21ksoftirqd/108:26:001
5568993024,4cyclictest25-21ksoftirqd/108:20:231
5568993024,4cyclictest25-21ksoftirqd/107:24:501
5568993024,4cyclictest25-21ksoftirqd/107:10:371
5568993023,4cyclictest25-21ksoftirqd/112:38:461
5567993025,3cyclictest9-21ksoftirqd/012:35:160
5567993025,3cyclictest9-21ksoftirqd/011:40:550
5567993025,3cyclictest9-21ksoftirqd/010:48:580
5567993025,3cyclictest9-21ksoftirqd/010:48:580
5567993024,4cyclictest9-21ksoftirqd/011:54:560
5567993024,3cyclictest9-21ksoftirqd/011:35:320
5567993023,5cyclictest9-21ksoftirqd/009:33:380
5567993023,4cyclictest9-21ksoftirqd/010:10:020
5567993023,4cyclictest9-21ksoftirqd/007:25:110
5569992924,3cyclictest33-21ksoftirqd/211:25:002
5568992924,3cyclictest25-21ksoftirqd/109:07:121
5568992924,3cyclictest25-21ksoftirqd/108:40:061
5568992923,4cyclictest25-21ksoftirqd/112:15:101
5568992923,4cyclictest25-21ksoftirqd/110:18:371
5568992923,4cyclictest25-21ksoftirqd/110:18:371
5568992923,4cyclictest25-21ksoftirqd/109:46:041
5568992923,4cyclictest25-21ksoftirqd/109:46:031
5567992924,3cyclictest9-21ksoftirqd/011:55:370
5567992923,4cyclictest9-21ksoftirqd/010:41:580
5567992923,4cyclictest9-21ksoftirqd/008:30:200
5567992915,5cyclictest9-21ksoftirqd/009:04:380
5569992818,9cyclictest33-21ksoftirqd/209:30:252
5568992823,3cyclictest25-21ksoftirqd/112:27:301
5568992822,4cyclictest25-21ksoftirqd/108:12:481
5568992822,4cyclictest25-21ksoftirqd/107:33:331
5567992823,3cyclictest9-21ksoftirqd/010:30:010
5567992823,3cyclictest9-21ksoftirqd/010:08:130
5567992822,4cyclictest9-21ksoftirqd/011:32:490
5569992722,3cyclictest33-21ksoftirqd/207:56:012
5569992716,9cyclictest33-21ksoftirqd/209:25:182
5568992721,4cyclictest25-21ksoftirqd/111:07:301
5568992721,4cyclictest25-21ksoftirqd/109:20:401
5568992721,4cyclictest25-21ksoftirqd/108:01:011
5567992722,3cyclictest9-21ksoftirqd/010:59:000
5567992722,3cyclictest9-21ksoftirqd/008:29:270
5567992722,3cyclictest9-21ksoftirqd/008:02:440
5567992721,4cyclictest9-21ksoftirqd/011:07:270
5569992621,3cyclictest33-21ksoftirqd/209:55:142
5568992620,4cyclictest25-21ksoftirqd/108:49:351
5568992620,4cyclictest25-21ksoftirqd/107:40:071
5568992614,11cyclictest0-21swapper/112:01:241
5567992621,3cyclictest9-21ksoftirqd/012:33:020
5567992619,4cyclictest9-21ksoftirqd/012:14:410
5568992520,3cyclictest25-21ksoftirqd/108:19:381
5568992519,4cyclictest25-21ksoftirqd/111:52:561
5567992520,3cyclictest9-21ksoftirqd/011:29:430
5568992317,4cyclictest25-21ksoftirqd/108:51:081
5568992317,4cyclictest25-21ksoftirqd/108:51:081
5568992317,3cyclictest25-21ksoftirqd/111:20:131
5568992218,3cyclictest25-21ksoftirqd/110:39:591
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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