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2026-07-24 - 01:17
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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 rackdslot3.osadl.org (updated Thu Jul 23, 2026 12:45:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
213182227163,20sleep00-21swapper/007:06:470
213062226163,51sleep30-21swapper/307:06:383
213402200166,23sleep20-21swapper/207:07:052
212772200167,22sleep10-21swapper/107:06:161
2186799700,30cyclictest15257-21df_abs09:10:140
2186899620,3cyclictest6191-21seq09:58:211
21869996031,7cyclictest33-21ksoftirqd/210:40:002
21869995931,4cyclictest33-21ksoftirqd/212:00:142
21869995625,7cyclictest33-21ksoftirqd/207:20:002
2186799561,24cyclictest4657-21fschecks_time09:55:140
21869995527,6cyclictest33-21ksoftirqd/212:10:012
21869995526,7cyclictest33-21ksoftirqd/208:10:002
21869995517,10cyclictest33-21ksoftirqd/211:35:252
21869995417,6cyclictest33-21ksoftirqd/208:55:262
21869995323,3cyclictest33-21ksoftirqd/211:00:132
21869995322,4cyclictest33-21ksoftirqd/209:25:152
21869995318,7cyclictest33-21ksoftirqd/210:10:132
21869995316,8cyclictest33-21ksoftirqd/211:10:142
151462530,2sleep30-21swapper/309:10:143
21869995221,4cyclictest33-21ksoftirqd/209:05:132
21869995217,6cyclictest33-21ksoftirqd/207:40:002
21869995123,7cyclictest33-21ksoftirqd/212:29:592
21869995123,3cyclictest33-21ksoftirqd/212:20:172
21869995122,7cyclictest33-21ksoftirqd/208:00:222
2186799510,24cyclictest6071-21ssh12:10:260
139391510,1ptp4l401ktimersoftd/308:40:213
21869995019,4cyclictest33-21ksoftirqd/209:10:132
21869995019,3cyclictest33-21ksoftirqd/211:20:132
21869994922,7cyclictest33-21ksoftirqd/208:45:152
21869994918,4cyclictest33-21ksoftirqd/212:10:152
21869994911,8cyclictest33-21ksoftirqd/208:40:132
21869994823,6cyclictest33-21ksoftirqd/212:35:202
21869994823,6cyclictest33-21ksoftirqd/212:35:202
21869994822,6cyclictest33-21ksoftirqd/211:05:172
21869994820,3cyclictest33-21ksoftirqd/211:55:212
21869994820,3cyclictest33-21ksoftirqd/211:55:202
2186899470,3cyclictest31868-21chrt10:50:251
21869994626,17cyclictest33-21ksoftirqd/211:44:592
21869994620,4cyclictest33-21ksoftirqd/212:15:182
21869994619,7cyclictest33-21ksoftirqd/210:15:172
21869994613,6cyclictest33-21ksoftirqd/210:05:122
21869994518,3cyclictest33-21ksoftirqd/211:15:122
21869994517,3cyclictest33-21ksoftirqd/209:55:112
21869994517,3cyclictest33-21ksoftirqd/209:45:172
21869994513,4cyclictest33-21ksoftirqd/211:30:262
21869994510,5cyclictest33-21ksoftirqd/211:45:242
2186899450,3cyclictest5647-21chrt07:40:541
2186899450,3cyclictest24870-21taskset08:21:041
139391450,0ptp4l401ktimersoftd/309:50:353
21869994412,4cyclictest33-21ksoftirqd/208:35:272
1394914434,3phc2sys0-21swapper/307:10:013
21869994316,4cyclictest33-21ksoftirqd/209:37:562
21869994315,7cyclictest33-21ksoftirqd/209:50:512
21869994315,7cyclictest33-21ksoftirqd/209:20:262
21869994315,4cyclictest33-21ksoftirqd/210:30:252
21869994312,8cyclictest33-21ksoftirqd/208:15:142
21869994312,8cyclictest33-21ksoftirqd/207:15:012
21869994312,4cyclictest33-21ksoftirqd/207:20:272
21869994310,3cyclictest33-21ksoftirqd/210:45:272
2186999429,6cyclictest33-21ksoftirqd/207:30:252
2186999428,10cyclictest33-21ksoftirqd/210:25:002
21869994237,2cyclictest321ktimersoftd/207:45:292
21869994236,3cyclictest33-21ksoftirqd/208:00:002
21869994223,10cyclictest33-21ksoftirqd/208:25:012
21869994217,7cyclictest33-21ksoftirqd/210:40:222
21869994215,4cyclictest33-21ksoftirqd/209:17:342
21869994215,4cyclictest33-21ksoftirqd/209:17:342
21869994214,3cyclictest33-21ksoftirqd/210:53:212
21869994213,7cyclictest33-21ksoftirqd/209:00:232
21869994212,4cyclictest33-21ksoftirqd/208:25:142
21869994210,4cyclictest33-21ksoftirqd/208:50:162
139391420,0ptp4l401ktimersoftd/308:22:333
2186999416,6cyclictest33-21ksoftirqd/211:50:002
21869994124,9cyclictest33-21ksoftirqd/209:40:152
21869994114,4cyclictest33-21ksoftirqd/210:00:102
21869994110,4cyclictest33-21ksoftirqd/208:30:132
21869994110,10cyclictest33-21ksoftirqd/207:25:222
2186799410,21cyclictest11574-21awk07:55:170
2157624132,4sleep00-21swapper/007:10:010
139391410,0ptp4l401ktimersoftd/312:25:173
2186999406,6cyclictest33-21ksoftirqd/207:40:232
2186999403,3cyclictest33-21ksoftirqd/210:25:192
21869994012,4cyclictest33-21ksoftirqd/210:55:142
21869993923,4cyclictest33-21ksoftirqd/207:54:592
21869993913,6cyclictest33-21ksoftirqd/208:10:132
2186899393,25cyclictest0-21swapper/107:38:081
2186799390,18cyclictest0-21swapper/009:15:160
2186799390,18cyclictest0-21swapper/009:15:160
2186999385,4cyclictest33-21ksoftirqd/212:30:212
2186999384,2cyclictest121rcu_preempt09:30:162
2186999381,10cyclictest33-21ksoftirqd/211:25:002
21868993832,4cyclictest25-21ksoftirqd/109:53:521
2186899381,3cyclictest20230-21seq08:12:421
2186899381,26cyclictest0-21swapper/109:47:331
2186899381,22cyclictest10857-21seq07:54:211
2186899380,3cyclictest19243-21runrttasks11:30:591
2186799381,25cyclictest20456-21iostat_ios11:35:190
21868993731,4cyclictest25-21ksoftirqd/111:29:241
2186799370,23cyclictest26310-21uptime11:45:270
139391370,0ptp4l401ktimersoftd/312:20:003
21870993630,4cyclictest41-21ksoftirqd/311:55:373
21870993630,4cyclictest41-21ksoftirqd/311:55:373
21868993630,4cyclictest25-21ksoftirqd/110:29:541
21868993629,4cyclictest25-21ksoftirqd/107:30:201
2186899361,21cyclictest0-21swapper/111:37:291
2186799360,17cyclictest0-21swapper/007:45:240
139391360,0ptp4l401ktimersoftd/309:40:583
139391360,0ptp4l401ktimersoftd/308:26:423
21870993529,4cyclictest41-21ksoftirqd/312:34:413
21870993529,4cyclictest41-21ksoftirqd/311:53:013
21870993529,4cyclictest41-21ksoftirqd/308:46:353
21870993529,4cyclictest41-21ksoftirqd/307:58:173
21870993529,4cyclictest41-21ksoftirqd/307:51:153
21870993529,4cyclictest41-21ksoftirqd/307:38:233
21868993529,4cyclictest25-21ksoftirqd/108:54:111
21868993529,4cyclictest25-21ksoftirqd/108:45:531
21868993529,4cyclictest25-21ksoftirqd/108:41:351
21868993529,4cyclictest25-21ksoftirqd/107:56:381
21868993528,4cyclictest25-21ksoftirqd/111:02:441
2186899351,20cyclictest0-21swapper/109:03:331
2186899351,18cyclictest14139-21runrttasks09:05:571
2186899350,1cyclictest0-21swapper/111:13:141
2186799350,21cyclictest17543-21timerwakeupswit08:05:260
2186799350,21cyclictest14000-21ssh11:20:250
139391350,0ptp4l401ktimersoftd/308:00:113
317772340,6sleep02186799cyclictest07:30:140
21870993429,3cyclictest41-21ksoftirqd/310:35:123
21870993429,3cyclictest41-21ksoftirqd/307:45:103
21870993428,4cyclictest41-21ksoftirqd/311:09:283
21870993428,4cyclictest41-21ksoftirqd/311:04:153
21870993428,4cyclictest41-21ksoftirqd/310:56:003
21870993428,4cyclictest41-21ksoftirqd/309:36:253
21870993428,4cyclictest41-21ksoftirqd/308:19:033
21868993429,3cyclictest25-21ksoftirqd/108:59:481
21868993428,4cyclictest25-21ksoftirqd/112:35:061
21868993428,4cyclictest25-21ksoftirqd/112:35:061
21868993428,4cyclictest25-21ksoftirqd/112:03:061
21868993428,4cyclictest25-21ksoftirqd/110:42:461
21868993427,4cyclictest25-21ksoftirqd/111:41:351
2186899341,4cyclictest8767-21seq12:16:241
2186899341,18cyclictest0-21swapper/107:23:031
21867993429,3cyclictest9-21ksoftirqd/010:30:120
21867993429,3cyclictest9-21ksoftirqd/007:21:560
21867993428,4cyclictest9-21ksoftirqd/011:18:190
21867993428,4cyclictest9-21ksoftirqd/010:19:230
21867993428,4cyclictest9-21ksoftirqd/008:35:410
21867993427,5cyclictest9-21ksoftirqd/011:11:410
21870993328,3cyclictest41-21ksoftirqd/308:55:003
21870993327,4cyclictest41-21ksoftirqd/312:20:373
21870993327,4cyclictest41-21ksoftirqd/311:47:313
21870993327,4cyclictest41-21ksoftirqd/311:17:473
21868993328,3cyclictest25-21ksoftirqd/110:30:031
21868993327,4cyclictest25-21ksoftirqd/111:16:121
21868993327,4cyclictest25-21ksoftirqd/108:09:391
21868993326,4cyclictest25-21ksoftirqd/107:15:541
21867993328,3cyclictest9-21ksoftirqd/008:29:510
21867993327,4cyclictest9-21ksoftirqd/012:32:210
21867993327,4cyclictest9-21ksoftirqd/011:33:590
21867993327,4cyclictest9-21ksoftirqd/010:38:120
21867993327,4cyclictest9-21ksoftirqd/010:26:570
21867993327,4cyclictest9-21ksoftirqd/010:21:030
21867993327,4cyclictest9-21ksoftirqd/007:37:560
2186799330,19cyclictest1317-21runrttasks09:39:030
2186799330,16cyclictest0-21swapper/009:25:260
21870993227,3cyclictest41-21ksoftirqd/309:02:263
21870993227,3cyclictest41-21ksoftirqd/308:32:243
21870993227,3cyclictest41-21ksoftirqd/308:08:293
21870993226,4cyclictest41-21ksoftirqd/312:02:513
21870993226,4cyclictest41-21ksoftirqd/310:34:183
21870993226,4cyclictest41-21ksoftirqd/310:06:143
21870993226,4cyclictest41-21ksoftirqd/309:47:283
21870993226,4cyclictest41-21ksoftirqd/309:08:453
21870993226,4cyclictest41-21ksoftirqd/308:13:453
2187099320,2cyclictest121rcu_preempt10:27:553
21868993227,3cyclictest25-21ksoftirqd/109:29:281
21868993226,4cyclictest25-21ksoftirqd/112:13:401
21868993226,4cyclictest25-21ksoftirqd/111:49:181
21868993226,4cyclictest25-21ksoftirqd/110:38:451
21868993226,4cyclictest25-21ksoftirqd/110:07:561
21868993225,5cyclictest25-21ksoftirqd/110:18:311
2186899320,4cyclictest4152-21latency_hist12:10:001
21867993227,3cyclictest9-21ksoftirqd/007:29:050
21867993226,4cyclictest9-21ksoftirqd/011:08:250
21867993226,4cyclictest9-21ksoftirqd/008:02:590
2186799321,19cyclictest32296-21runrttasks10:52:320
21870993126,3cyclictest41-21ksoftirqd/309:16:053
21870993126,3cyclictest41-21ksoftirqd/309:16:053
21870993126,3cyclictest41-21ksoftirqd/308:36:553
21870993125,4cyclictest41-21ksoftirqd/310:45:293
21870993125,4cyclictest41-21ksoftirqd/310:02:573
21870993125,4cyclictest41-21ksoftirqd/308:56:263
21868993126,3cyclictest25-21ksoftirqd/112:34:551
21868993126,3cyclictest25-21ksoftirqd/110:11:051
21868993125,4cyclictest25-21ksoftirqd/111:23:501
21868993125,4cyclictest25-21ksoftirqd/110:48:281
21868993125,4cyclictest25-21ksoftirqd/110:00:101
21868993125,4cyclictest25-21ksoftirqd/109:42:491
21868993124,4cyclictest25-21ksoftirqd/109:17:581
21868993124,4cyclictest25-21ksoftirqd/109:17:581
21868993111,17cyclictest15378-21fschecks_time09:10:161
2186899310,3cyclictest31073-21timedrift11:55:251
2186899310,3cyclictest31073-21timedrift11:55:251
2186899310,1cyclictest0-21swapper/109:30:321
21867993126,3cyclictest9-21ksoftirqd/011:50:100
21867993126,3cyclictest9-21ksoftirqd/008:40:170
21867993126,3cyclictest9-21ksoftirqd/007:15:130
21867993125,4cyclictest9-21ksoftirqd/010:45:140
21867993125,4cyclictest9-21ksoftirqd/009:05:050
21867993125,4cyclictest9-21ksoftirqd/008:53:420
139391310,0ptp4l401ktimersoftd/312:12:243
139391310,0ptp4l401ktimersoftd/311:25:253
21870993025,3cyclictest41-21ksoftirqd/311:20:113
21870993024,4cyclictest41-21ksoftirqd/311:12:413
21868993025,3cyclictest25-21ksoftirqd/111:54:541
21868993025,3cyclictest25-21ksoftirqd/109:35:081
2186899302,24cyclictest9308-21/usr/sbin/munin12:20:221
2186899302,23cyclictest0-21swapper/110:55:101
2186899302,22cyclictest5372-21apt-get11:05:131
21868993012,15cyclictest20655-21/usr/sbin/munin08:15:151
21868993011,16cyclictest19833-21tr09:20:121
21867993025,3cyclictest9-21ksoftirqd/012:24:500
21867993025,3cyclictest9-21ksoftirqd/009:50:050
21867993024,4cyclictest9-21ksoftirqd/011:41:100
21867993024,4cyclictest9-21ksoftirqd/010:44:290
21867993024,4cyclictest9-21ksoftirqd/010:03:420
139391300,0ptp4l401ktimersoftd/311:30:313
139391300,0ptp4l401ktimersoftd/310:10:313
21870992924,3cyclictest41-21ksoftirqd/310:40:353
21870992923,4cyclictest41-21ksoftirqd/312:09:453
21870992923,4cyclictest41-21ksoftirqd/310:24:273
21870992923,4cyclictest41-21ksoftirqd/310:17:013
21870992923,4cyclictest41-21ksoftirqd/307:27:493
21870992923,4cyclictest41-21ksoftirqd/307:19:293
21868992923,4cyclictest25-21ksoftirqd/108:37:181
21868992923,4cyclictest25-21ksoftirqd/108:32:091
2186899290,3cyclictest14204-21iostat_ios08:00:171
21867992924,3cyclictest9-21ksoftirqd/012:25:090
21867992924,3cyclictest9-21ksoftirqd/009:04:320
21867992924,3cyclictest9-21ksoftirqd/008:57:590
21867992924,3cyclictest9-21ksoftirqd/008:30:270
21867992923,4cyclictest9-21ksoftirqd/012:37:350
21867992923,4cyclictest9-21ksoftirqd/012:37:350
21867992923,4cyclictest9-21ksoftirqd/010:14:450
21867992923,4cyclictest9-21ksoftirqd/008:21:130
21867992923,4cyclictest9-21ksoftirqd/008:16:230
21867992923,4cyclictest9-21ksoftirqd/008:14:020
21867992922,4cyclictest9-21ksoftirqd/011:56:510
21867992922,4cyclictest9-21ksoftirqd/011:56:500
2186799291,24cyclictest6932-21apt-get12:15:110
21867992912,14cyclictest20619-21cut09:20:180
139391290,0ptp4l401ktimersoftd/311:35:163
139391290,0ptp4l401ktimersoftd/309:56:023
139391290,0ptp4l401ktimersoftd/309:31:523
139391290,0ptp4l401ktimersoftd/307:32:183
21870992823,3cyclictest41-21ksoftirqd/310:51:143
21870992823,3cyclictest41-21ksoftirqd/309:25:593
21868992823,3cyclictest25-21ksoftirqd/112:26:551
21868992820,5cyclictest25-21ksoftirqd/107:47:121
21868992810,15cyclictest30079-21cat07:25:191
21867992822,4cyclictest9-21ksoftirqd/011:26:170
2186799281,21cyclictest2518-21gnome-shell11:00:590
21867992812,13cyclictest3236-21entropy08:45:150
2186799281,20cyclictest497-21apt-get10:55:110
2186799281,20cyclictest31960-21apt-get12:00:130
2186799280,25cyclictest4513-21tr07:40:180
21870992722,3cyclictest41-21ksoftirqd/311:44:423
21870992722,3cyclictest41-21ksoftirqd/309:22:113
2186899278,16cyclictest26093-21irqrtprio08:25:181
2186899271,23cyclictest24025-21latency_hist07:14:591
2186899270,3cyclictest16371-21df10:20:131
21867992722,3cyclictest9-21ksoftirqd/009:45:570
21867992721,4cyclictest9-21ksoftirqd/009:33:090
2186799271,23cyclictest2518-21gnome-shell12:08:590
2186799271,18cyclictest8804-21apt-get07:50:120
2186799270,24cyclictest30792-21find09:40:230
21870992621,3cyclictest41-21ksoftirqd/312:38:203
21870992621,3cyclictest41-21ksoftirqd/312:38:203
2186799261,21cyclictest9448-21fschecks_time10:05:130
139391260,1ptp4l401ktimersoftd/307:40:113
21870992520,3cyclictest41-21ksoftirqd/307:22:363
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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