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2026-09-22 - 21:06
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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 376 highest latencies:
System rackdslot3.osadl.org (updated Tue Sep 22, 2026 12:45:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
297572205172,22sleep20-21swapper/207:08:002
298782204171,22sleep10-21swapper/107:09:291
297582203170,22sleep30-21swapper/307:08:023
296362203169,22sleep00-21swapper/007:06:250
2856721580,6sleep03021499cyclictest11:35:150
139391550,1ptp4l401ktimersoftd/312:21:293
139391550,1ptp4l401ktimersoftd/308:50:513
139391540,1ptp4l401ktimersoftd/307:34:483
139391540,1ptp4l401ktimersoftd/307:34:483
172792520,1sleep00-21swapper/012:20:000
172792520,1sleep00-21swapper/012:20:000
61532510,2sleep30-21swapper/309:40:213
30215994438,3cyclictest28928-21latency_hist10:30:001
134391440,7getstats3021799cyclictest10:14:433
139391430,0ptp4l401ktimersoftd/311:10:193
139391430,0ptp4l401ktimersoftd/310:24:023
136332430,3sleep30-21swapper/309:55:253
3021799424,3cyclictest121rcu_preempt07:50:143
30216994212,28cyclictest0-21swapper/208:20:232
139391420,0ptp4l401ktimersoftd/310:16:383
3021799416,15cyclictest41-21ksoftirqd/311:25:243
3021699411,37cyclictest21716-21sshd10:14:092
30216994112,27cyclictest20368-21kworker/2:211:45:232
30216994112,27cyclictest20368-21kworker/2:211:45:232
3021699410,2cyclictest20368-21kworker/2:211:05:332
30214994126,5cyclictest9-21ksoftirqd/011:05:140
139391410,0ptp4l401ktimersoftd/307:55:163
3021799393,3cyclictest41-21ksoftirqd/308:05:153
30217993933,3cyclictest41-21ksoftirqd/309:30:213
30216993933,4cyclictest33-21ksoftirqd/209:44:032
3021799384,4cyclictest41-21ksoftirqd/308:00:283
30217993835,2cyclictest41-21ksoftirqd/308:49:593
30217993834,2cyclictest41-21ksoftirqd/309:04:593
30217993834,2cyclictest41-21ksoftirqd/307:19:593
30217993833,2cyclictest41-21ksoftirqd/311:55:003
3021799381,4cyclictest41-21ksoftirqd/312:04:123
3021599380,2cyclictest0-21swapper/108:21:241
139391380,1ptp4l0-21swapper/311:24:313
139391380,0ptp4l401ktimersoftd/309:15:133
3021799374,8cyclictest41-21ksoftirqd/312:30:133
30217993733,3cyclictest41-21ksoftirqd/312:15:003
30217993731,4cyclictest41-21ksoftirqd/312:36:443
30217993731,3cyclictest41-21ksoftirqd/309:10:203
30217993726,9cyclictest41-21ksoftirqd/307:10:203
30217993726,2cyclictest41-21ksoftirqd/310:50:283
30215993731,4cyclictest25-21ksoftirqd/110:43:331
30215993731,4cyclictest25-21ksoftirqd/109:25:001
30215993730,5cyclictest25-21ksoftirqd/111:52:051
30215993730,5cyclictest25-21ksoftirqd/110:13:161
30214993731,4cyclictest9-21ksoftirqd/010:30:000
3021799367,3cyclictest41-21ksoftirqd/309:35:263
3021799366,7cyclictest41-21ksoftirqd/308:20:003
3021799364,3cyclictest41-21ksoftirqd/310:40:213
30217993632,2cyclictest41-21ksoftirqd/311:45:003
30217993632,2cyclictest41-21ksoftirqd/309:45:293
30217993630,4cyclictest41-21ksoftirqd/308:40:353
30217993630,4cyclictest41-21ksoftirqd/307:24:533
30217993630,3cyclictest41-21ksoftirqd/311:30:123
30217993629,4cyclictest41-21ksoftirqd/310:45:533
3021799361,5cyclictest41-21ksoftirqd/308:40:003
3021799361,4cyclictest41-21ksoftirqd/311:15:153
3021799361,4cyclictest41-21ksoftirqd/307:50:003
3021799361,3cyclictest121rcu_preempt11:55:223
30216993630,4cyclictest33-21ksoftirqd/211:31:562
30216993630,4cyclictest33-21ksoftirqd/210:49:122
30216993630,4cyclictest33-21ksoftirqd/207:13:292
30216993630,4cyclictest10784-21sshd10:59:202
30215993630,4cyclictest25-21ksoftirqd/111:27:341
30215993630,4cyclictest25-21ksoftirqd/110:22:191
30214993631,3cyclictest9-21ksoftirqd/012:20:370
30214993630,4cyclictest9-21ksoftirqd/008:53:320
3021799356,3cyclictest41-21ksoftirqd/308:25:193
3021799354,3cyclictest41-21ksoftirqd/308:30:153
30217993531,2cyclictest41-21ksoftirqd/312:10:003
30217993530,2cyclictest41-21ksoftirqd/310:55:123
30217993529,4cyclictest41-21ksoftirqd/312:16:383
30217993529,4cyclictest41-21ksoftirqd/312:16:383
30217993529,4cyclictest41-21ksoftirqd/309:08:073
30217993529,4cyclictest41-21ksoftirqd/308:21:473
30217993523,9cyclictest41-21ksoftirqd/307:35:263
30216993530,3cyclictest33-21ksoftirqd/207:40:102
30216993529,4cyclictest33-21ksoftirqd/211:38:022
30216993529,4cyclictest33-21ksoftirqd/209:15:082
30216993529,4cyclictest33-21ksoftirqd/209:05:052
30216993527,5cyclictest26543-21cron10:25:002
30215993530,3cyclictest25-21ksoftirqd/111:00:421
30215993529,4cyclictest25-21ksoftirqd/111:34:201
30215993529,4cyclictest25-21ksoftirqd/111:22:491
30215993529,4cyclictest25-21ksoftirqd/108:01:191
30215993528,4cyclictest25-21ksoftirqd/109:02:131
139391350,1ptp4l0-21swapper/308:55:123
3021799347,2cyclictest41-21ksoftirqd/309:25:163
3021799347,2cyclictest41-21ksoftirqd/309:25:153
3021799345,2cyclictest41-21ksoftirqd/310:05:143
30217993429,3cyclictest41-21ksoftirqd/309:52:413
30217993429,3cyclictest41-21ksoftirqd/307:25:243
30217993428,4cyclictest41-21ksoftirqd/312:28:503
30217993428,4cyclictest41-21ksoftirqd/311:45:053
30217993428,4cyclictest41-21ksoftirqd/311:45:053
3021799342,6cyclictest41-21ksoftirqd/310:30:293
3021799340,9cyclictest41-21ksoftirqd/311:05:173
30216993429,3cyclictest33-21ksoftirqd/212:30:052
30216993428,4cyclictest33-21ksoftirqd/211:22:452
30216993428,4cyclictest33-21ksoftirqd/209:50:142
30216993428,4cyclictest33-21ksoftirqd/207:51:372
30216993414,3cyclictest13307-21cron08:49:592
30216993412,3cyclictest16331-21expr11:10:122
3021699340,15cyclictest19224-21latency_hist10:10:002
30215993428,4cyclictest25-21ksoftirqd/111:44:431
30215993428,4cyclictest25-21ksoftirqd/108:56:471
30215993428,4cyclictest25-21ksoftirqd/107:19:301
30214993429,3cyclictest9-21ksoftirqd/010:07:430
30214993428,4cyclictest9-21ksoftirqd/010:49:500
30214993428,4cyclictest9-21ksoftirqd/007:40:080
30214993428,4cyclictest9-21ksoftirqd/007:24:510
30217993329,3cyclictest41-21ksoftirqd/310:39:143
30217993329,2cyclictest41-21ksoftirqd/310:05:003
30217993328,3cyclictest41-21ksoftirqd/311:35:153
30217993328,3cyclictest41-21ksoftirqd/309:20:163
30217993328,3cyclictest41-21ksoftirqd/308:10:033
30217993328,3cyclictest41-21ksoftirqd/308:10:033
30217993328,2cyclictest41-21ksoftirqd/307:42:083
30216993328,3cyclictest33-21ksoftirqd/209:32:462
30216993327,4cyclictest33-21ksoftirqd/211:50:542
30216993327,4cyclictest33-21ksoftirqd/209:35:112
30216993327,4cyclictest33-21ksoftirqd/207:26:342
3021699331,29cyclictest8713-21cat08:40:012
30216993312,3cyclictest3789-21/usr/sbin/munin08:30:162
30216993312,3cyclictest16216-21sh08:55:142
30216993311,3cyclictest28113-21df_abs09:20:152
30215993328,3cyclictest25-21ksoftirqd/112:03:041
30215993327,4cyclictest25-21ksoftirqd/110:54:001
30215993327,4cyclictest25-21ksoftirqd/108:49:281
30215993327,4cyclictest25-21ksoftirqd/107:47:221
30215993327,4cyclictest25-21ksoftirqd/107:36:521
30215993327,4cyclictest25-21ksoftirqd/107:29:001
30215993326,5cyclictest25-21ksoftirqd/109:13:351
30214993327,4cyclictest9-21ksoftirqd/012:26:180
30214993327,4cyclictest9-21ksoftirqd/011:01:410
30214993327,4cyclictest9-21ksoftirqd/010:12:230
30214993327,4cyclictest9-21ksoftirqd/008:05:580
30214993327,4cyclictest9-21ksoftirqd/008:02:330
30214993327,4cyclictest9-21ksoftirqd/007:59:580
30214993327,4cyclictest9-21ksoftirqd/007:36:500
30214993326,5cyclictest9-21ksoftirqd/008:27:280
30217993226,3cyclictest41-21ksoftirqd/310:30:003
3021699322,7cyclictest12335-21apt-get09:55:132
30216993227,3cyclictest33-21ksoftirqd/211:55:292
30216993227,3cyclictest33-21ksoftirqd/207:31:192
30216993227,3cyclictest33-21ksoftirqd/207:31:192
30216993227,3cyclictest33-21ksoftirqd/207:15:422
30216993226,4cyclictest33-21ksoftirqd/212:14:252
30216993226,4cyclictest33-21ksoftirqd/209:46:052
30216993226,4cyclictest33-21ksoftirqd/208:40:472
30216993226,4cyclictest33-21ksoftirqd/208:18:322
30216993226,4cyclictest33-21ksoftirqd/208:12:032
30216993226,4cyclictest33-21ksoftirqd/208:12:032
30216993226,4cyclictest33-21ksoftirqd/207:24:412
30216993211,4cyclictest15150-21fschecks_count10:00:162
30215993227,3cyclictest25-21ksoftirqd/108:37:241
30215993227,3cyclictest25-21ksoftirqd/108:12:051
30215993227,3cyclictest25-21ksoftirqd/108:12:051
30215993226,4cyclictest25-21ksoftirqd/112:30:361
30215993226,4cyclictest25-21ksoftirqd/112:19:371
30215993226,4cyclictest25-21ksoftirqd/112:19:371
30215993226,4cyclictest25-21ksoftirqd/112:07:011
30215993226,4cyclictest25-21ksoftirqd/111:38:451
30215993226,4cyclictest25-21ksoftirqd/110:48:111
30215993226,4cyclictest25-21ksoftirqd/110:07:511
30215993226,4cyclictest25-21ksoftirqd/108:19:551
30215993225,4cyclictest25-21ksoftirqd/109:19:491
30214993230,1cyclictest0-21swapper/007:10:010
30214993227,3cyclictest9-21ksoftirqd/009:48:440
30214993227,3cyclictest9-21ksoftirqd/009:39:020
30214993227,3cyclictest9-21ksoftirqd/008:19:030
30214993226,4cyclictest9-21ksoftirqd/011:58:100
30214993226,4cyclictest9-21ksoftirqd/010:52:590
30214993226,4cyclictest9-21ksoftirqd/009:10:020
30214993226,4cyclictest9-21ksoftirqd/008:49:480
30214993226,4cyclictest9-21ksoftirqd/008:23:070
30214993226,4cyclictest9-21ksoftirqd/007:47:460
30214993225,5cyclictest9-21ksoftirqd/009:27:180
30214993225,5cyclictest9-21ksoftirqd/009:27:180
30217993126,3cyclictest41-21ksoftirqd/311:00:143
3021699313,26cyclictest20368-21kworker/2:212:39:412
3021699313,26cyclictest20368-21kworker/2:212:06:052
30216993126,3cyclictest33-21ksoftirqd/212:26:482
30216993126,3cyclictest33-21ksoftirqd/209:14:312
30216993126,3cyclictest33-21ksoftirqd/208:52:232
30216993126,3cyclictest33-21ksoftirqd/208:27:362
30216993125,4cyclictest33-21ksoftirqd/212:17:092
30216993125,4cyclictest33-21ksoftirqd/212:17:082
30216993125,4cyclictest33-21ksoftirqd/212:04:182
3021699312,28cyclictest21672-21kworker/2:008:00:412
3021699312,28cyclictest11619-21kworker/2:207:36:132
30215993126,3cyclictest25-21ksoftirqd/109:59:511
30215993125,4cyclictest25-21ksoftirqd/111:13:341
30215993125,4cyclictest25-21ksoftirqd/109:45:171
30215993124,5cyclictest25-21ksoftirqd/111:17:351
30215993124,5cyclictest25-21ksoftirqd/107:33:271
30215993124,5cyclictest25-21ksoftirqd/107:33:261
3021599310,30cyclictest0-21swapper/111:46:031
3021599310,30cyclictest0-21swapper/111:46:031
30214993126,3cyclictest9-21ksoftirqd/010:56:280
30214993126,3cyclictest9-21ksoftirqd/009:15:380
30214993125,4cyclictest9-21ksoftirqd/012:13:220
30214993125,4cyclictest9-21ksoftirqd/011:54:170
30214993125,4cyclictest9-21ksoftirqd/011:41:530
30214993125,4cyclictest9-21ksoftirqd/011:31:220
30214993125,4cyclictest9-21ksoftirqd/010:01:360
30214993125,4cyclictest9-21ksoftirqd/009:40:100
30214993125,4cyclictest9-21ksoftirqd/009:01:340
30214993125,4cyclictest9-21ksoftirqd/008:39:360
30214993125,4cyclictest9-21ksoftirqd/008:33:260
30214993125,4cyclictest9-21ksoftirqd/007:15:530
30214993124,5cyclictest9-21ksoftirqd/011:47:230
30214993124,5cyclictest9-21ksoftirqd/011:47:230
30214993124,4cyclictest9-21ksoftirqd/008:40:370
3021699309,3cyclictest31130-21cat11:40:172
3021699303,26cyclictest20368-21kworker/2:211:18:332
30216993025,3cyclictest33-21ksoftirqd/211:25:562
30216993025,3cyclictest33-21ksoftirqd/207:59:382
30216993025,3cyclictest33-21ksoftirqd/207:46:422
30216993024,4cyclictest33-21ksoftirqd/212:20:062
3021699302,26cyclictest20368-21kworker/2:210:33:342
30215993024,4cyclictest25-21ksoftirqd/112:20:291
30215993024,4cyclictest25-21ksoftirqd/111:06:121
30215993024,4cyclictest25-21ksoftirqd/110:02:251
30215993024,4cyclictest25-21ksoftirqd/109:42:431
30215993024,4cyclictest25-21ksoftirqd/109:39:301
30215993024,4cyclictest25-21ksoftirqd/108:33:281
30215993024,4cyclictest25-21ksoftirqd/108:28:511
30215993024,4cyclictest25-21ksoftirqd/108:07:081
30215993024,4cyclictest25-21ksoftirqd/107:12:001
30214993025,3cyclictest9-21ksoftirqd/009:34:240
30214993024,4cyclictest9-21ksoftirqd/012:32:520
30214993024,4cyclictest9-21ksoftirqd/012:00:020
30214993024,4cyclictest9-21ksoftirqd/011:27:050
30214993024,4cyclictest9-21ksoftirqd/011:20:270
30214993024,4cyclictest9-21ksoftirqd/010:41:520
30216992923,4cyclictest33-21ksoftirqd/210:50:402
30216992923,4cyclictest33-21ksoftirqd/210:27:012
30216992910,3cyclictest23322-21processes10:15:252
30215992924,3cyclictest25-21ksoftirqd/109:08:541
30215992923,4cyclictest25-21ksoftirqd/112:00:001
30215992923,4cyclictest25-21ksoftirqd/109:50:381
30215992923,4cyclictest25-21ksoftirqd/107:54:041
30215992922,5cyclictest25-21ksoftirqd/108:40:291
30215992922,4cyclictest25-21ksoftirqd/108:54:341
30214992924,3cyclictest9-21ksoftirqd/012:08:170
30214992924,3cyclictest9-21ksoftirqd/010:30:180
30214992924,3cyclictest9-21ksoftirqd/010:17:530
30214992924,3cyclictest9-21ksoftirqd/009:50:570
30214992922,4cyclictest9-21ksoftirqd/008:57:330
142432290,7sleep13021599cyclictest12:10:261
3021699283,24cyclictest20368-21kworker/2:210:44:172
30216992823,3cyclictest33-21ksoftirqd/211:00:412
3021699282,25cyclictest21672-21kworker/2:009:01:332
3021699281,26cyclictest20368-21kworker/2:209:26:172
3021699281,26cyclictest20368-21kworker/2:209:26:172
30215992823,3cyclictest25-21ksoftirqd/112:28:241
30215992823,3cyclictest25-21ksoftirqd/110:58:191
30215992823,3cyclictest25-21ksoftirqd/110:19:171
30215992822,4cyclictest25-21ksoftirqd/112:37:051
30215992822,4cyclictest25-21ksoftirqd/110:31:011
30215992822,4cyclictest25-21ksoftirqd/107:42:001
30214992823,3cyclictest9-21ksoftirqd/011:10:440
30214992823,3cyclictest1247-21turbostat10:40:000
30214992822,4cyclictest9-21ksoftirqd/012:38:010
30214992822,4cyclictest9-21ksoftirqd/009:06:400
3021699272,24cyclictest20368-21kworker/2:210:38:012
3021699271,25cyclictest21672-21kworker/2:008:09:132
30215992721,4cyclictest31829-21grep09:25:271
30215992721,4cyclictest31829-21grep09:25:271
30215992721,4cyclictest25-21ksoftirqd/110:38:161
30214992723,3cyclictest9-21ksoftirqd/007:50:430
30214992722,3cyclictest9-21ksoftirqd/007:29:290
30214992721,4cyclictest9-21ksoftirqd/011:15:580
30214992721,4cyclictest9-21ksoftirqd/009:22:240
30214992721,4cyclictest9-21ksoftirqd/008:10:530
30214992721,4cyclictest9-21ksoftirqd/008:10:520
30215992620,4cyclictest25-21ksoftirqd/109:34:491
30215992620,4cyclictest25-21ksoftirqd/107:20:101
30215992419,3cyclictest25-21ksoftirqd/107:58:311
30214992016,2cyclictest9-21ksoftirqd/009:58:450
30214992014,4cyclictest7658-21cstates07:30:140
30214992014,4cyclictest7658-21cstates07:30:130
30214991913,4cyclictest9-21ksoftirqd/010:20:090
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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