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2026-08-25 - 16:52
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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 Aug 25, 2026 12:45:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
139491242197,34phc2sys0-21swapper/307:08:593
195382205173,22sleep10-21swapper/107:05:541
197802203171,22sleep20-21swapper/207:08:562
195942201168,22sleep00-21swapper/007:06:370
1937121410,4sleep32016099cyclictest09:20:273
1129321380,2sleep12015899cyclictest11:20:191
2015899780,76cyclictest0-21swapper/108:35:331
2015899740,72cyclictest0-21swapper/109:57:531
2015899719,60cyclictest0-21swapper/112:36:131
2015899718,61cyclictest0-21swapper/108:57:531
2015899707,61cyclictest0-21swapper/107:45:531
111542630,3sleep0111rcuc/010:10:260
20159995727,3cyclictest33-21ksoftirqd/207:35:132
221132560,2sleep20-21swapper/208:20:162
20159995626,7cyclictest33-21ksoftirqd/210:05:002
20159995624,4cyclictest33-21ksoftirqd/208:15:252
20159995624,3cyclictest33-21ksoftirqd/210:10:212
20159995420,6cyclictest33-21ksoftirqd/211:50:012
139391540,47ptp4l0-21swapper/307:10:013
20159995327,3cyclictest33-21ksoftirqd/208:45:012
20159995325,4cyclictest33-21ksoftirqd/210:25:152
20159995324,3cyclictest33-21ksoftirqd/211:15:012
20159995320,4cyclictest33-21ksoftirqd/209:20:192
20159995319,4cyclictest33-21ksoftirqd/211:15:142
20158995214,36cyclictest0-21swapper/111:56:121
139391520,0ptp4l401ktimersoftd/309:30:543
20159995119,4cyclictest33-21ksoftirqd/212:09:592
20159995118,9cyclictest33-21ksoftirqd/209:35:002
20159995112,7cyclictest33-21ksoftirqd/209:10:222
20159995024,4cyclictest33-21ksoftirqd/212:35:212
20159995023,6cyclictest33-21ksoftirqd/208:55:002
20159995023,3cyclictest33-21ksoftirqd/210:55:262
20159995019,4cyclictest33-21ksoftirqd/210:35:002
20159994944,3cyclictest23680-21ls10:40:002
2015999494,3cyclictest33-21ksoftirqd/212:25:002
2015999494,3cyclictest33-21ksoftirqd/212:25:002
20159994921,4cyclictest33-21ksoftirqd/212:10:272
20159994920,5cyclictest33-21ksoftirqd/208:30:002
20159994920,3cyclictest33-21ksoftirqd/212:25:012
20159994916,6cyclictest33-21ksoftirqd/210:15:212
20159994914,6cyclictest33-21ksoftirqd/209:55:222
20159994913,5cyclictest33-21ksoftirqd/208:30:292
20159994911,6cyclictest33-21ksoftirqd/211:35:262
139391490,0ptp4l401ktimersoftd/311:35:153
115982480,4sleep011549-21apt-get08:00:000
20159994722,6cyclictest33-21ksoftirqd/207:55:002
20159994719,3cyclictest33-21ksoftirqd/209:25:302
20159994617,4cyclictest33-21ksoftirqd/211:05:192
20159994616,4cyclictest33-21ksoftirqd/209:35:132
20159994615,9cyclictest33-21ksoftirqd/207:25:182
20159994615,6cyclictest33-21ksoftirqd/208:05:252
20159994614,3cyclictest33-21ksoftirqd/208:42:152
20159994612,5cyclictest33-21ksoftirqd/207:20:192
20159994611,8cyclictest33-21ksoftirqd/209:20:012
20159994521,6cyclictest33-21ksoftirqd/210:10:002
20159994520,6cyclictest33-21ksoftirqd/207:20:002
2015999451,6cyclictest33-21ksoftirqd/211:25:222
20159994510,4cyclictest33-21ksoftirqd/208:55:142
2015899450,43cyclictest0-21swapper/111:32:521
2015999447,7cyclictest33-21ksoftirqd/207:45:162
2015999446,3cyclictest33-21ksoftirqd/210:20:242
20159994420,3cyclictest33-21ksoftirqd/207:35:002
2015999441,2cyclictest33-21ksoftirqd/209:05:282
20159994412,4cyclictest33-21ksoftirqd/209:50:172
139391440,0ptp4l401ktimersoftd/312:20:213
139391440,0ptp4l401ktimersoftd/312:20:213
20159994333,4cyclictest33-21ksoftirqd/209:50:012
2015999432,3cyclictest33-21ksoftirqd/211:30:252
20159994322,18cyclictest33-21ksoftirqd/208:00:002
20159994310,6cyclictest33-21ksoftirqd/208:10:132
20159994310,5cyclictest33-21ksoftirqd/212:35:002
2015999428,5cyclictest33-21ksoftirqd/209:00:232
2015999424,3cyclictest33-21ksoftirqd/211:00:152
2015999424,3cyclictest33-21ksoftirqd/210:45:262
2015999424,3cyclictest121rcu_preempt11:25:012
2015999422,2cyclictest121rcu_preempt12:20:002
20159994212,5cyclictest33-21ksoftirqd/211:55:142
20159994210,6cyclictest33-21ksoftirqd/210:40:262
139391410,0ptp4l401ktimersoftd/310:45:253
2015999405,2cyclictest121rcu_preempt07:40:152
20159994025,12cyclictest33-21ksoftirqd/209:45:002
20159993929,3cyclictest33-21ksoftirqd/208:35:262
2015999392,2cyclictest121rcu_preempt11:40:142
20159993831,4cyclictest33-21ksoftirqd/210:53:572
20159993827,9cyclictest33-21ksoftirqd/208:02:082
20159993825,11cyclictest33-21ksoftirqd/207:10:282
20158993832,4cyclictest25-21ksoftirqd/108:28:371
20158993831,4cyclictest25-21ksoftirqd/112:08:301
20157993832,4cyclictest27928-21grep07:25:150
139391380,0ptp4l401ktimersoftd/308:00:023
139391380,0ptp4l401ktimersoftd/307:50:293
20159993733,2cyclictest33-21ksoftirqd/212:00:142
20159993732,3cyclictest33-21ksoftirqd/211:50:282
20158993731,4cyclictest25-21ksoftirqd/109:07:531
20158993730,5cyclictest25-21ksoftirqd/109:47:281
139391370,0ptp4l401ktimersoftd/310:05:153
20160993630,4cyclictest41-21ksoftirqd/311:40:313
20157993630,4cyclictest9-21ksoftirqd/009:57:590
20157993619,3cyclictest9-21ksoftirqd/007:15:150
20160993529,4cyclictest41-21ksoftirqd/311:08:183
20160993529,4cyclictest41-21ksoftirqd/308:06:173
20160993528,5cyclictest41-21ksoftirqd/311:16:363
20160993513,3cyclictest29668-21sed08:35:193
20158993530,3cyclictest25-21ksoftirqd/110:10:001
20158993529,4cyclictest25-21ksoftirqd/112:24:231
20158993529,4cyclictest25-21ksoftirqd/112:24:221
20158993529,4cyclictest25-21ksoftirqd/111:38:481
20158993529,4cyclictest25-21ksoftirqd/108:48:391
20158993529,4cyclictest25-21ksoftirqd/107:59:051
20157993529,4cyclictest9-21ksoftirqd/011:56:490
20157993529,4cyclictest9-21ksoftirqd/008:57:010
2015799350,2cyclictest121rcu_preempt12:11:430
20160993429,3cyclictest41-21ksoftirqd/308:27:123
20160993428,4cyclictest41-21ksoftirqd/311:26:313
20160993428,4cyclictest41-21ksoftirqd/311:03:413
20160993428,4cyclictest41-21ksoftirqd/310:57:353
20160993428,4cyclictest41-21ksoftirqd/310:02:113
20160993428,4cyclictest41-21ksoftirqd/309:51:203
20160993428,4cyclictest41-21ksoftirqd/308:58:043
20160993428,4cyclictest41-21ksoftirqd/307:55:543
20160993428,4cyclictest41-21ksoftirqd/307:31:363
20160993426,4cyclictest41-21ksoftirqd/308:45:123
2015899343,29cyclictest0-21swapper/108:16:131
20158993429,3cyclictest25-21ksoftirqd/112:31:091
20158993428,4cyclictest25-21ksoftirqd/110:16:211
20158993428,4cyclictest25-21ksoftirqd/107:29:361
20157993428,4cyclictest9-21ksoftirqd/008:41:480
2015799340,2cyclictest121rcu_preempt10:04:180
2016099333,2cyclictest121rcu_preempt10:40:203
20160993328,3cyclictest41-21ksoftirqd/307:20:203
20160993328,3cyclictest41-21ksoftirqd/307:15:113
20160993327,4cyclictest41-21ksoftirqd/312:29:463
20160993327,4cyclictest41-21ksoftirqd/312:16:583
20160993327,4cyclictest41-21ksoftirqd/312:09:003
20160993327,4cyclictest41-21ksoftirqd/310:17:553
20160993327,4cyclictest41-21ksoftirqd/310:12:373
20160993327,4cyclictest41-21ksoftirqd/309:49:353
20160993327,4cyclictest41-21ksoftirqd/307:35:563
20158993328,3cyclictest25-21ksoftirqd/109:51:261
20158993328,3cyclictest25-21ksoftirqd/107:43:281
20158993327,4cyclictest25-21ksoftirqd/111:16:021
20158993327,4cyclictest25-21ksoftirqd/109:32:201
20157993327,4cyclictest9-21ksoftirqd/012:18:240
20157993327,4cyclictest9-21ksoftirqd/009:03:110
20157993327,4cyclictest9-21ksoftirqd/008:24:150
20157993327,4cyclictest9-21ksoftirqd/007:47:000
20157993327,3cyclictest9-21ksoftirqd/010:25:340
268832320,2sleep00-21swapper/009:38:530
20160993227,3cyclictest41-21ksoftirqd/312:00:433
20160993226,4cyclictest41-21ksoftirqd/312:38:133
20160993226,4cyclictest41-21ksoftirqd/307:25:123
20160993215,3cyclictest23323-21interrupts11:45:163
20160993212,3cyclictest14341-21/usr/sbin/munin10:20:213
20158993227,3cyclictest25-21ksoftirqd/112:19:181
20158993227,3cyclictest25-21ksoftirqd/110:37:461
20158993227,3cyclictest25-21ksoftirqd/110:11:581
20158993227,3cyclictest25-21ksoftirqd/108:00:121
20158993227,3cyclictest25-21ksoftirqd/107:33:051
20158993226,4cyclictest25-21ksoftirqd/110:55:371
20158993226,4cyclictest25-21ksoftirqd/110:52:521
20158993226,4cyclictest25-21ksoftirqd/110:24:391
20158993226,4cyclictest25-21ksoftirqd/107:22:501
20157993227,3cyclictest9-21ksoftirqd/012:30:350
20157993227,3cyclictest9-21ksoftirqd/008:51:030
20157993227,3cyclictest9-21ksoftirqd/007:35:000
20157993226,4cyclictest9-21ksoftirqd/012:04:560
20157993226,4cyclictest9-21ksoftirqd/011:44:060
20157993226,4cyclictest9-21ksoftirqd/007:55:000
20157993225,5cyclictest9-21ksoftirqd/009:24:090
20160993126,3cyclictest41-21ksoftirqd/311:31:243
20160993126,3cyclictest41-21ksoftirqd/309:13:423
20160993126,3cyclictest41-21ksoftirqd/308:35:003
20160993126,3cyclictest41-21ksoftirqd/307:48:293
20160993125,4cyclictest41-21ksoftirqd/311:51:143
20160993125,4cyclictest41-21ksoftirqd/308:53:393
20160993125,4cyclictest41-21ksoftirqd/308:21:373
20160993112,3cyclictest2245-21/usr/sbin/munin07:40:263
20158993126,3cyclictest25-21ksoftirqd/107:10:181
20158993125,4cyclictest25-21ksoftirqd/109:42:511
20158993125,4cyclictest25-21ksoftirqd/109:01:591
20158993125,4cyclictest25-21ksoftirqd/108:40:531
20158993125,4cyclictest25-21ksoftirqd/108:07:351
2015899310,29cyclictest0-21swapper/111:45:221
20157993126,3cyclictest9-21ksoftirqd/010:43:120
20157993126,3cyclictest9-21ksoftirqd/010:33:430
20157993126,3cyclictest9-21ksoftirqd/009:32:530
20157993126,3cyclictest9-21ksoftirqd/009:25:250
20157993125,4cyclictest9-21ksoftirqd/011:34:510
20157993125,4cyclictest9-21ksoftirqd/011:08:310
20157993125,4cyclictest9-21ksoftirqd/008:37:510
20157993125,4cyclictest9-21ksoftirqd/008:17:130
134491310,1getstats0-21swapper/308:10:063
2016099309,20cyclictest3838-21kworker/3:109:58:433
2016099302,8cyclictest1300-21snmpd11:55:113
20160993025,3cyclictest41-21ksoftirqd/309:25:173
20160993024,4cyclictest41-21ksoftirqd/311:20:453
20160993024,4cyclictest41-21ksoftirqd/308:17:003
2015899307,21cyclictest0-21swapper/111:40:161
20158993025,3cyclictest25-21ksoftirqd/110:41:001
20158993024,4cyclictest25-21ksoftirqd/108:24:161
20158993024,4cyclictest25-21ksoftirqd/107:54:551
20158993024,4cyclictest25-21ksoftirqd/107:35:391
20157993025,3cyclictest9-21ksoftirqd/012:36:120
20157993024,4cyclictest9-21ksoftirqd/012:26:020
20157993024,4cyclictest9-21ksoftirqd/010:51:420
20157993024,4cyclictest9-21ksoftirqd/009:10:090
20157993024,4cyclictest9-21ksoftirqd/008:03:090
20160992924,3cyclictest41-21ksoftirqd/310:36:383
20160992924,3cyclictest41-21ksoftirqd/310:29:513
20160992924,3cyclictest41-21ksoftirqd/309:08:083
20160992924,3cyclictest41-21ksoftirqd/309:02:533
20160992923,4cyclictest41-21ksoftirqd/312:34:363
20160992923,4cyclictest41-21ksoftirqd/309:17:003
20158992924,3cyclictest25-21ksoftirqd/110:30:291
20158992924,3cyclictest25-21ksoftirqd/110:26:151
20158992924,3cyclictest25-21ksoftirqd/109:17:401
20158992924,3cyclictest25-21ksoftirqd/109:10:091
20158992923,4cyclictest25-21ksoftirqd/112:02:281
20158992923,4cyclictest25-21ksoftirqd/108:13:291
20158992923,4cyclictest25-21ksoftirqd/107:16:041
20157992924,3cyclictest9-21ksoftirqd/010:38:180
20157992924,3cyclictest9-21ksoftirqd/008:29:250
20157992924,3cyclictest9-21ksoftirqd/008:14:260
20157992924,3cyclictest9-21ksoftirqd/007:22:100
20157992923,4cyclictest9-21ksoftirqd/012:09:000
20157992923,4cyclictest9-21ksoftirqd/011:48:230
139391290,0ptp4l401ktimersoftd/309:38:113
139391290,0ptp4l401ktimersoftd/308:42:203
20160992823,3cyclictest41-21ksoftirqd/310:33:563
20158992823,3cyclictest25-21ksoftirqd/111:25:281
20158992823,3cyclictest25-21ksoftirqd/111:07:351
20158992823,3cyclictest25-21ksoftirqd/110:02:211
20158992823,3cyclictest25-21ksoftirqd/108:30:421
20158992822,4cyclictest25-21ksoftirqd/109:29:511
20157992823,3cyclictest9-21ksoftirqd/010:07:090
20157992823,3cyclictest9-21ksoftirqd/007:12:210
20157992822,4cyclictest9-21ksoftirqd/011:51:520
20157992822,4cyclictest9-21ksoftirqd/011:14:170
20157992822,4cyclictest9-21ksoftirqd/011:00:360
20157992822,4cyclictest9-21ksoftirqd/010:16:240
20157992822,4cyclictest9-21ksoftirqd/007:41:390
20157992822,4cyclictest9-21ksoftirqd/007:38:500
20160992722,3cyclictest41-21ksoftirqd/311:12:443
20160992722,3cyclictest41-21ksoftirqd/310:55:003
20160992721,4cyclictest41-21ksoftirqd/309:44:543
20158992722,3cyclictest25-21ksoftirqd/111:00:181
20158992722,3cyclictest25-21ksoftirqd/109:23:091
20158992722,3cyclictest25-21ksoftirqd/108:53:041
20158992721,4cyclictest25-21ksoftirqd/112:25:101
20158992721,4cyclictest25-21ksoftirqd/110:46:061
20157992722,3cyclictest9-21ksoftirqd/009:51:490
20157992722,3cyclictest9-21ksoftirqd/009:42:230
20157992722,3cyclictest9-21ksoftirqd/009:19:510
20157992621,3cyclictest9-21ksoftirqd/011:35:150
20157992621,3cyclictest9-21ksoftirqd/010:58:430
20157992621,3cyclictest9-21ksoftirqd/010:49:550
20157992621,3cyclictest9-21ksoftirqd/010:22:400
20157992621,3cyclictest9-21ksoftirqd/008:34:300
20157992620,3cyclictest9-21ksoftirqd/008:07:320
20158992519,4cyclictest25-21ksoftirqd/111:12:201
20157992520,3cyclictest9-21ksoftirqd/011:17:000
20157992519,4cyclictest9-21ksoftirqd/009:45:470
20160992417,5cyclictest41-21ksoftirqd/312:10:413
20157992419,3cyclictest9-21ksoftirqd/008:46:500
20157992418,4cyclictest9-21ksoftirqd/012:20:040
20157992418,4cyclictest9-21ksoftirqd/012:20:040
20157992418,4cyclictest9-21ksoftirqd/011:27:170
20158992115,4cyclictest3944-21/usr/sbin/munin12:10:271
20157992115,4cyclictest9-21ksoftirqd/009:05:110
20158992011,5cyclictest24863-21apt-get09:35:121
20158991914,3cyclictest26265-21phc2sys-jitter11:50:231
20157991812,4cyclictest9-21ksoftirqd/011:22:430
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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