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2026-08-05 - 22:03
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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 Wed Aug 05, 2026 12:45:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
228092204170,23sleep30-21swapper/307:07:253
228082202169,22sleep20-21swapper/207:07:232
227722201168,22sleep10-21swapper/107:06:551
227962200167,22sleep00-21swapper/007:07:140
1385918262,11phc2sys0-21swapper/307:10:013
34352620,4sleep00-21swapper/011:40:120
232332620,2sleep20-21swapper/210:10:252
232332620,2sleep20-21swapper/210:10:252
115562550,1sleep20-21swapper/209:50:062
135191520,9getstats0-21swapper/309:55:333
138491480,9ptp4l401ktimersoftd/311:51:543
138491410,0ptp4l401ktimersoftd/312:21:413
138491410,0ptp4l401ktimersoftd/308:57:303
23306994011,27cyclictest0-21swapper/212:35:242
23305994035,3cyclictest27660-21sshd11:23:301
135191390,3getstats0-21swapper/307:35:313
23304993830,6cyclictest9-21ksoftirqd/010:30:000
50798370,6rtkit-daemon0-21swapper/012:35:580
23307993731,4cyclictest41-21ksoftirqd/311:35:033
23307993731,4cyclictest41-21ksoftirqd/310:06:083
23305993730,5cyclictest25-21ksoftirqd/111:03:551
23304993730,4cyclictest9-21ksoftirqd/007:26:390
23307993631,3cyclictest41-21ksoftirqd/311:40:123
23307993631,3cyclictest41-21ksoftirqd/311:20:213
23307993630,4cyclictest41-21ksoftirqd/312:13:023
23307993630,4cyclictest41-21ksoftirqd/311:06:023
23306993630,4cyclictest33-21ksoftirqd/211:12:472
23305993630,4cyclictest25-21ksoftirqd/109:05:291
23305993630,4cyclictest25-21ksoftirqd/109:00:441
23305993629,4cyclictest25-21ksoftirqd/107:54:491
23304993629,4cyclictest9-21ksoftirqd/008:20:430
23307993529,4cyclictest41-21ksoftirqd/311:47:393
23307993529,4cyclictest41-21ksoftirqd/311:16:333
23307993529,4cyclictest41-21ksoftirqd/310:48:453
23307993529,4cyclictest41-21ksoftirqd/310:43:363
23307993529,4cyclictest41-21ksoftirqd/308:30:533
23307993529,4cyclictest41-21ksoftirqd/308:06:463
23307993529,4cyclictest41-21ksoftirqd/308:03:133
23306993529,4cyclictest33-21ksoftirqd/212:33:072
23306993529,4cyclictest33-21ksoftirqd/212:22:082
23306993529,4cyclictest33-21ksoftirqd/211:55:352
23306993529,4cyclictest33-21ksoftirqd/211:46:562
23306993529,4cyclictest33-21ksoftirqd/210:54:342
23305993529,4cyclictest25-21ksoftirqd/109:52:471
23305993529,4cyclictest25-21ksoftirqd/109:27:351
23305993529,4cyclictest25-21ksoftirqd/108:48:441
23305993529,4cyclictest25-21ksoftirqd/107:33:461
23305993528,4cyclictest25-21ksoftirqd/110:54:531
23304993530,3cyclictest9-21ksoftirqd/007:10:430
23304993529,4cyclictest9-21ksoftirqd/010:16:250
23304993529,4cyclictest9-21ksoftirqd/007:52:110
23307993429,3cyclictest41-21ksoftirqd/311:57:013
23307993428,4cyclictest41-21ksoftirqd/310:57:273
23307993428,4cyclictest41-21ksoftirqd/310:04:283
23307993428,4cyclictest41-21ksoftirqd/307:46:403
23307993427,5cyclictest41-21ksoftirqd/312:00:383
2330799342,29cyclictest29830-21grep11:25:273
23306993429,3cyclictest33-21ksoftirqd/212:27:132
23306993429,3cyclictest33-21ksoftirqd/210:00:142
23306993429,3cyclictest33-21ksoftirqd/208:41:552
23306993429,3cyclictest33-21ksoftirqd/208:41:552
23306993428,4cyclictest33-21ksoftirqd/211:50:382
23306993428,4cyclictest33-21ksoftirqd/210:31:422
23306993428,4cyclictest33-21ksoftirqd/208:48:572
23306993428,4cyclictest33-21ksoftirqd/207:40:092
23306993428,4cyclictest33-21ksoftirqd/207:19:192
23306993414,3cyclictest9077-21ls10:50:012
23305993428,4cyclictest25-21ksoftirqd/112:16:401
23305993428,4cyclictest25-21ksoftirqd/111:19:041
23305993428,4cyclictest25-21ksoftirqd/109:59:531
23305993428,4cyclictest25-21ksoftirqd/108:38:491
23305993428,4cyclictest25-21ksoftirqd/107:47:301
23305993427,4cyclictest25-21ksoftirqd/109:21:381
23305993427,4cyclictest25-21ksoftirqd/107:58:461
23304993429,3cyclictest9-21ksoftirqd/009:48:160
23304993429,3cyclictest9-21ksoftirqd/007:34:420
23304993428,4cyclictest9-21ksoftirqd/012:08:490
23304993428,4cyclictest9-21ksoftirqd/011:55:090
23304993428,4cyclictest9-21ksoftirqd/011:36:570
23304993428,4cyclictest9-21ksoftirqd/011:24:410
23304993428,4cyclictest9-21ksoftirqd/009:55:100
23304993428,3cyclictest9-21ksoftirqd/011:27:410
23307993328,3cyclictest41-21ksoftirqd/310:32:213
23307993327,4cyclictest41-21ksoftirqd/312:27:413
23307993327,4cyclictest41-21ksoftirqd/312:05:323
23307993327,4cyclictest41-21ksoftirqd/311:33:173
23307993327,4cyclictest41-21ksoftirqd/311:03:493
23307993327,4cyclictest41-21ksoftirqd/310:10:533
23307993327,4cyclictest41-21ksoftirqd/310:10:533
23307993327,4cyclictest41-21ksoftirqd/309:51:493
23307993327,4cyclictest41-21ksoftirqd/309:35:043
23307993327,4cyclictest41-21ksoftirqd/309:33:343
23307993327,4cyclictest41-21ksoftirqd/308:35:463
23306993328,3cyclictest33-21ksoftirqd/209:48:202
23306993327,4cyclictest33-21ksoftirqd/210:27:452
23306993327,4cyclictest33-21ksoftirqd/208:19:292
23306993327,4cyclictest33-21ksoftirqd/207:22:162
23306993326,4cyclictest33-21ksoftirqd/209:20:432
23306993313,3cyclictest24152-21apt-get10:15:132
23305993328,3cyclictest25-21ksoftirqd/111:13:191
23305993328,3cyclictest25-21ksoftirqd/109:16:561
23305993328,3cyclictest25-21ksoftirqd/108:57:001
23305993327,4cyclictest25-21ksoftirqd/112:28:281
23305993327,4cyclictest25-21ksoftirqd/107:12:281
23305993327,3cyclictest25-21ksoftirqd/108:55:011
23305993326,5cyclictest25-21ksoftirqd/112:24:301
23304993328,3cyclictest9-21ksoftirqd/010:07:060
23304993328,3cyclictest9-21ksoftirqd/008:45:560
23304993327,4cyclictest9-21ksoftirqd/011:16:350
23304993327,4cyclictest9-21ksoftirqd/009:28:150
23304993327,4cyclictest9-21ksoftirqd/009:02:540
23304993326,4cyclictest9-21ksoftirqd/008:26:050
23304993326,4cyclictest9-21ksoftirqd/008:10:560
23307993227,3cyclictest41-21ksoftirqd/312:16:043
23307993227,3cyclictest41-21ksoftirqd/309:25:563
23307993227,3cyclictest41-21ksoftirqd/308:50:443
23307993226,4cyclictest41-21ksoftirqd/309:40:213
23307993226,4cyclictest41-21ksoftirqd/309:40:213
23307993226,4cyclictest41-21ksoftirqd/309:21:083
23307993226,4cyclictest41-21ksoftirqd/308:15:133
23307993226,4cyclictest41-21ksoftirqd/307:18:523
23307993214,15cyclictest20325-21needreboot11:10:213
23306993228,3cyclictest33-21ksoftirqd/211:20:452
23306993227,3cyclictest33-21ksoftirqd/209:13:272
23306993226,4cyclictest33-21ksoftirqd/211:06:092
23306993226,4cyclictest33-21ksoftirqd/209:58:582
23306993226,4cyclictest33-21ksoftirqd/209:09:102
23306993226,4cyclictest33-21ksoftirqd/208:21:452
23306993226,4cyclictest33-21ksoftirqd/207:45:552
23306993226,4cyclictest33-21ksoftirqd/207:14:302
23306993226,3cyclictest33-21ksoftirqd/209:40:052
23306993226,3cyclictest33-21ksoftirqd/209:40:042
23306993226,3cyclictest33-21ksoftirqd/209:27:052
23305993227,3cyclictest25-21ksoftirqd/112:40:001
23305993226,4cyclictest25-21ksoftirqd/110:56:531
23305993226,4cyclictest25-21ksoftirqd/110:33:191
23305993226,4cyclictest25-21ksoftirqd/110:02:101
23305993226,4cyclictest25-21ksoftirqd/107:23:271
23305993226,4cyclictest25-21ksoftirqd/107:15:491
23304993227,3cyclictest9-21ksoftirqd/012:33:440
23304993226,4cyclictest9-21ksoftirqd/008:57:580
23304993226,4cyclictest9-21ksoftirqd/008:01:010
23304993226,4cyclictest9-21ksoftirqd/007:43:000
2330799313,8cyclictest31016-21ps12:35:193
23307993126,3cyclictest41-21ksoftirqd/312:35:003
23307993126,3cyclictest41-21ksoftirqd/310:37:223
23307993126,3cyclictest41-21ksoftirqd/308:42:553
23307993126,3cyclictest41-21ksoftirqd/308:42:553
23307993125,4cyclictest41-21ksoftirqd/307:50:093
23306993126,3cyclictest33-21ksoftirqd/212:00:272
23306993126,3cyclictest33-21ksoftirqd/211:19:102
23306993126,3cyclictest33-21ksoftirqd/210:40:122
23306993126,3cyclictest33-21ksoftirqd/209:03:352
23306993125,4cyclictest33-21ksoftirqd/212:15:412
23306993125,4cyclictest33-21ksoftirqd/211:29:482
23306993125,4cyclictest33-21ksoftirqd/210:59:152
23306993125,4cyclictest33-21ksoftirqd/209:37:112
23306993125,4cyclictest33-21ksoftirqd/208:39:512
23306993125,4cyclictest33-21ksoftirqd/208:33:292
23306993125,4cyclictest33-21ksoftirqd/207:57:382
23305993126,3cyclictest25-21ksoftirqd/110:45:111
23305993126,3cyclictest25-21ksoftirqd/110:14:361
23305993126,3cyclictest25-21ksoftirqd/110:14:361
23305993125,4cyclictest25-21ksoftirqd/112:32:571
23305993125,4cyclictest25-21ksoftirqd/111:39:491
23305993125,4cyclictest25-21ksoftirqd/109:37:471
23304993126,3cyclictest9-21ksoftirqd/010:14:200
23304993126,3cyclictest9-21ksoftirqd/010:14:200
23304993126,3cyclictest9-21ksoftirqd/009:55:000
23304993126,3cyclictest9-21ksoftirqd/008:37:120
23304993125,4cyclictest9-21ksoftirqd/012:12:300
23304993125,4cyclictest9-21ksoftirqd/012:02:310
23304993125,4cyclictest9-21ksoftirqd/010:33:490
23304993125,4cyclictest9-21ksoftirqd/008:16:530
23304993125,4cyclictest9-21ksoftirqd/007:45:130
23304993125,4cyclictest9-21ksoftirqd/007:18:250
23304993125,3cyclictest9-21ksoftirqd/009:10:570
177422310,8sleep22330699cyclictest12:09:592
138491310,12ptp4l2330799cyclictest10:21:173
23307993025,3cyclictest41-21ksoftirqd/309:47:443
23307993025,3cyclictest41-21ksoftirqd/307:41:433
23307993024,4cyclictest41-21ksoftirqd/309:13:253
23307993014,14cyclictest31091-21latency_hist08:15:003
23306993025,3cyclictest33-21ksoftirqd/210:38:112
23306993024,4cyclictest33-21ksoftirqd/211:42:312
23306993024,4cyclictest33-21ksoftirqd/210:05:322
23306993023,5cyclictest33-21ksoftirqd/207:31:192
23305993025,3cyclictest25-21ksoftirqd/111:49:561
23305993025,3cyclictest25-21ksoftirqd/108:01:171
23305993024,4cyclictest25-21ksoftirqd/109:32:241
23305993024,4cyclictest25-21ksoftirqd/108:10:571
23305993023,5cyclictest25-21ksoftirqd/108:43:341
23305993023,5cyclictest25-21ksoftirqd/108:43:341
23305993023,4cyclictest25-21ksoftirqd/112:07:291
23304993025,3cyclictest9-21ksoftirqd/011:35:010
23304993025,3cyclictest9-21ksoftirqd/010:40:140
23304993024,4cyclictest9-21ksoftirqd/010:37:260
23304993024,4cyclictest9-21ksoftirqd/010:23:470
23304993024,4cyclictest9-21ksoftirqd/009:35:290
23304993024,4cyclictest9-21ksoftirqd/009:20:250
23304993024,4cyclictest9-21ksoftirqd/009:07:000
23304993024,4cyclictest9-21ksoftirqd/007:38:350
2330799298,18cyclictest25353-21grep10:15:223
23307992924,3cyclictest41-21ksoftirqd/309:08:373
23307992924,3cyclictest41-21ksoftirqd/308:47:273
23307992924,3cyclictest41-21ksoftirqd/308:28:123
23307992924,3cyclictest41-21ksoftirqd/308:20:503
23307992924,3cyclictest41-21ksoftirqd/307:57:243
23307992923,4cyclictest41-21ksoftirqd/310:27:073
23307992923,4cyclictest41-21ksoftirqd/309:00:423
23306992924,3cyclictest420-21rs:main2
23306992924,3cyclictest33-21ksoftirqd/211:34:202
23306992923,4cyclictest33-21ksoftirqd/208:56:112
23305992924,3cyclictest25-21ksoftirqd/110:20:511
23305992923,4cyclictest25-21ksoftirqd/111:33:361
23305992923,4cyclictest25-21ksoftirqd/110:39:051
23305992923,4cyclictest25-21ksoftirqd/110:27:331
23305992923,4cyclictest25-21ksoftirqd/110:07:071
23305992923,4cyclictest25-21ksoftirqd/109:46:371
23305992923,4cyclictest25-21ksoftirqd/109:14:481
23305992923,4cyclictest25-21ksoftirqd/108:34:201
23305992923,4cyclictest25-21ksoftirqd/108:06:401
23305992922,5cyclictest25-21ksoftirqd/111:51:301
23304992923,4cyclictest9-21ksoftirqd/012:25:430
23304992923,4cyclictest9-21ksoftirqd/012:18:120
23304992923,4cyclictest9-21ksoftirqd/010:00:160
23304992923,4cyclictest9-21ksoftirqd/008:50:200
23304992923,3cyclictest9-21ksoftirqd/007:55:520
23307992823,3cyclictest41-21ksoftirqd/307:29:063
23307992822,4cyclictest41-21ksoftirqd/309:15:343
23307992811,15cyclictest9460-21cstates10:50:143
23306992823,3cyclictest33-21ksoftirqd/211:01:132
23306992821,4cyclictest33-21ksoftirqd/207:53:482
2330699281,25cyclictest1605-21sendmail-mta10:21:192
23305992823,3cyclictest25-21ksoftirqd/112:11:011
23305992823,3cyclictest25-21ksoftirqd/110:43:501
23305992822,4cyclictest25-21ksoftirqd/107:37:351
23305992822,3cyclictest25-21ksoftirqd/107:27:581
23305992821,4cyclictest25-21ksoftirqd/108:21:361
23304992823,3cyclictest9-21ksoftirqd/012:24:040
23304992823,3cyclictest9-21ksoftirqd/011:45:380
23304992823,3cyclictest9-21ksoftirqd/009:15:190
23304992823,3cyclictest9-21ksoftirqd/008:42:200
23304992823,3cyclictest9-21ksoftirqd/008:42:200
23304992822,4cyclictest9-21ksoftirqd/010:51:310
2330699277,18cyclictest0-21swapper/208:11:152
23306992722,3cyclictest33-21ksoftirqd/212:12:402
23306992722,3cyclictest33-21ksoftirqd/208:50:062
23306992722,3cyclictest33-21ksoftirqd/208:27:032
23306992722,3cyclictest33-21ksoftirqd/207:26:152
23306992721,4cyclictest33-21ksoftirqd/207:35:122
23305992722,3cyclictest25-21ksoftirqd/110:17:181
23305992722,3cyclictest25-21ksoftirqd/108:28:131
23305992721,4cyclictest25-21ksoftirqd/111:55:101
23305992721,4cyclictest25-21ksoftirqd/108:15:231
23304992723,3cyclictest9-21ksoftirqd/008:33:030
23304992721,4cyclictest9-21ksoftirqd/009:31:480
2330799267,4cyclictest24946-21latency_hist07:25:013
23306992620,4cyclictest33-21ksoftirqd/209:18:342
2330699260,13cyclictest0-21swapper/208:00:082
23305992619,5cyclictest25-21ksoftirqd/112:03:171
23304992621,3cyclictest9-21ksoftirqd/011:54:010
23304992621,3cyclictest9-21ksoftirqd/011:04:230
23304992620,4cyclictest9-21ksoftirqd/011:14:180
2330699255,7cyclictest0-21swapper/208:09:522
23305992520,3cyclictest25-21ksoftirqd/111:41:541
23305992519,4cyclictest25-21ksoftirqd/111:09:001
23304992519,4cyclictest9-21ksoftirqd/011:05:190
23304992519,4cyclictest9-21ksoftirqd/007:20:540
23305992418,4cyclictest25-21ksoftirqd/111:29:501
23305992418,3cyclictest9875-21apt-get09:40:011
23305992418,3cyclictest9875-21apt-get09:40:011
23304992418,4cyclictest9-21ksoftirqd/010:47:180
2330799234,3cyclictest25876-21seq07:31:293
23306992317,4cyclictest33-21ksoftirqd/209:31:542
23304992217,3cyclictest9-21ksoftirqd/009:44:490
23304992217,3cyclictest9-21ksoftirqd/009:44:480
23304992216,4cyclictest9-21ksoftirqd/010:57:450
23304992116,3cyclictest9-21ksoftirqd/008:09:320
23305991611,3cyclictest1303-21runrttasks07:42:491
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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