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2026-07-05 - 20:30
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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 rackdslot4.osadl.org (updated Sun Jul 05, 2026 12:45:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
138591211144,23phc2sys0-21swapper/307:06:073
120912205170,23sleep10-21swapper/107:09:221
120972203169,22sleep20-21swapper/207:09:272
120952200166,22sleep00-21swapper/007:09:250
369721690,6sleep21244099cyclictest12:15:232
1244099660,24cyclictest8524-21ps12:25:232
1244099651,23cyclictest1-21systemd07:20:192
1244099610,25cyclictest6844-21awk08:00:282
138491580,1ptp4l391rcuc/307:20:223
1244099570,22cyclictest15012-21cpuspeed_turbos08:20:122
1244099530,25cyclictest25356-21sed07:35:162
1244099521,24cyclictest1145-21gunzip12:10:262
138491500,0ptp4l401ktimersoftd/310:48:203
1244099500,24cyclictest10462-21sed12:30:192
1214524735,5sleep30-21swapper/307:10:003
138491440,1ptp4l401ktimersoftd/311:30:233
138491440,0ptp4l401ktimersoftd/308:45:483
1244099440,27cyclictest30603-21irqstats09:55:192
1244099440,27cyclictest30603-21irqstats09:55:192
1243899449,6cyclictest9-21ksoftirqd/008:20:000
12438994414,2cyclictest9-21ksoftirqd/010:45:000
12438994412,16cyclictest9-21ksoftirqd/011:40:000
138491430,0ptp4l401ktimersoftd/310:09:433
138491430,0ptp4l401ktimersoftd/309:45:303
138491430,0ptp4l401ktimersoftd/309:10:153
12440994324,17cyclictest33-21ksoftirqd/207:40:122
138491420,0ptp4l401ktimersoftd/312:13:413
12439994237,3cyclictest25-21ksoftirqd/110:40:001
138491410,0ptp4l401ktimersoftd/308:52:303
1385914019,10phc2sys41-21ksoftirqd/311:10:133
138491400,0ptp4l401ktimersoftd/312:03:223
12440994035,3cyclictest9681-21cron08:10:012
1244099400,28cyclictest14918-21/usr/sbin/munin10:30:192
1243899408,6cyclictest9-21ksoftirqd/011:20:000
1243899404,2cyclictest121rcu_preempt09:05:170
12438994035,2cyclictest9-21ksoftirqd/011:35:000
12440993910,26cyclictest0-21swapper/210:25:242
12439993933,4cyclictest25-21ksoftirqd/109:40:011
12439993932,4cyclictest25-21ksoftirqd/109:25:131
1243899396,6cyclictest9-21ksoftirqd/010:50:170
1243899395,4cyclictest9-21ksoftirqd/010:55:160
12438993933,3cyclictest9-21ksoftirqd/009:00:160
12438993912,7cyclictest9-21ksoftirqd/011:55:150
1243899386,6cyclictest9-21ksoftirqd/010:45:130
1243899384,10cyclictest9-21ksoftirqd/007:25:140
12438993834,2cyclictest9-21ksoftirqd/011:05:000
12438993833,3cyclictest9-21ksoftirqd/011:50:000
12438993832,3cyclictest9-21ksoftirqd/012:15:180
12438993832,3cyclictest9-21ksoftirqd/011:10:260
12438993832,3cyclictest9-21ksoftirqd/010:10:000
12438993832,3cyclictest9-21ksoftirqd/010:05:000
12438993832,3cyclictest9-21ksoftirqd/009:50:250
12438993830,5cyclictest9-21ksoftirqd/012:20:110
1243899382,2cyclictest121rcu_preempt10:20:230
1243899381,6cyclictest9-21ksoftirqd/009:30:260
138491370,0ptp4l401ktimersoftd/310:52:233
138491370,0ptp4l401ktimersoftd/310:40:173
138491370,0ptp4l401ktimersoftd/309:35:273
138491370,0ptp4l401ktimersoftd/307:50:213
12441993732,3cyclictest41-21ksoftirqd/311:42:233
12441993731,4cyclictest41-21ksoftirqd/308:00:003
12441993731,4cyclictest41-21ksoftirqd/308:00:003
12441993730,4cyclictest26926-21cron08:45:013
12440993713,21cyclictest1046-21awk11:05:222
1244099370,28cyclictest0-21swapper/211:50:222
12439993733,2cyclictest25-21ksoftirqd/111:00:001
12439993733,2cyclictest25-21ksoftirqd/110:30:171
12439993732,3cyclictest25811-21kworker/1:210:20:131
12439993731,4cyclictest25-21ksoftirqd/112:09:211
12439993731,4cyclictest25-21ksoftirqd/108:11:591
12439993731,4cyclictest25-21ksoftirqd/107:23:131
12439993730,5cyclictest25-21ksoftirqd/110:27:581
1243899375,6cyclictest9-21ksoftirqd/009:15:170
1243899375,2cyclictest121rcu_preempt12:25:170
1243899374,2cyclictest9-21ksoftirqd/008:35:170
12438993733,2cyclictest9-21ksoftirqd/010:40:000
12438993733,2cyclictest9-21ksoftirqd/007:55:000
1243899373,2cyclictest121rcu_preempt07:35:160
12438993732,3cyclictest9-21ksoftirqd/011:30:010
12438993732,3cyclictest9-21ksoftirqd/011:30:010
12438993732,3cyclictest9-21ksoftirqd/007:15:180
12438993732,3cyclictest9-21ksoftirqd/007:15:170
1243899372,4cyclictest9-21ksoftirqd/008:25:230
12438993723,4cyclictest26952-21latency_hist08:45:000
1243899372,2cyclictest121rcu_preempt11:05:280
1243899372,2cyclictest121rcu_preempt07:30:280
138491360,0ptp4l401ktimersoftd/308:25:213
12441993630,4cyclictest41-21ksoftirqd/308:07:283
1244099362,30cyclictest28987-21head12:00:272
12440993616,18cyclictest33-21ksoftirqd/209:00:122
12440993614,20cyclictest24697-21cat10:50:002
12439993631,3cyclictest25-21ksoftirqd/110:45:001
12439993631,3cyclictest25-21ksoftirqd/109:40:121
12439993630,4cyclictest25-21ksoftirqd/110:17:561
12439993630,4cyclictest25-21ksoftirqd/109:53:491
12439993630,4cyclictest25-21ksoftirqd/108:18:571
12439993629,5cyclictest25-21ksoftirqd/111:06:381
1243899364,2cyclictest9-21ksoftirqd/010:25:130
1243899363,2cyclictest121rcu_preempt09:25:240
1243899363,2cyclictest121rcu_preempt08:10:200
1243899363,2cyclictest121rcu_preempt08:05:180
12438993631,3cyclictest9-21ksoftirqd/010:30:130
12438993631,3cyclictest9-21ksoftirqd/009:40:000
12438993631,3cyclictest9-21ksoftirqd/008:20:120
12438993631,3cyclictest9-21ksoftirqd/007:25:010
1243899362,2cyclictest121rcu_preempt12:05:240
1243899361,2cyclictest121rcu_preempt09:40:240
1243899361,2cyclictest121rcu_preempt07:55:140
1243899361,2cyclictest121rcu_preempt07:55:140
12441993530,3cyclictest41-21ksoftirqd/312:09:393
12441993529,4cyclictest41-21ksoftirqd/312:30:533
12441993529,4cyclictest41-21ksoftirqd/311:08:493
12441993529,4cyclictest41-21ksoftirqd/309:23:103
12441993529,4cyclictest41-21ksoftirqd/309:00:353
12441993529,4cyclictest41-21ksoftirqd/307:47:193
12440993529,4cyclictest33-21ksoftirqd/209:24:552
12440993529,4cyclictest33-21ksoftirqd/208:57:452
12440993528,5cyclictest33-21ksoftirqd/209:35:572
12439993532,2cyclictest25-21ksoftirqd/112:29:591
12439993530,3cyclictest25-21ksoftirqd/108:40:001
12439993530,3cyclictest25-21ksoftirqd/108:30:001
12439993530,3cyclictest25-21ksoftirqd/107:39:591
12439993530,3cyclictest25-21ksoftirqd/107:15:391
12439993530,3cyclictest25-21ksoftirqd/107:15:391
12439993529,4cyclictest25-21ksoftirqd/111:39:321
12439993529,4cyclictest25-21ksoftirqd/111:12:561
12439993529,4cyclictest25-21ksoftirqd/109:21:391
12439993529,4cyclictest25-21ksoftirqd/108:33:251
1243999350,34cyclictest0-21swapper/112:11:431
12438993532,2cyclictest9-21ksoftirqd/007:10:130
12438993530,3cyclictest9-21ksoftirqd/009:47:460
12438993530,2cyclictest9-21ksoftirqd/008:45:130
12438993529,3cyclictest9-21ksoftirqd/012:35:130
12438993529,3cyclictest9-21ksoftirqd/012:10:180
1243899352,2cyclictest9-21ksoftirqd/008:00:130
1243899351,2cyclictest121rcu_preempt10:10:240
1243899351,2cyclictest121rcu_preempt09:55:180
1243899351,2cyclictest121rcu_preempt09:55:170
1243899351,2cyclictest121rcu_preempt09:20:140
1243899351,2cyclictest121rcu_preempt08:50:170
318852343,3sleep1121rcu_preempt08:55:011
134991340,1getstats0-21swapper/307:43:213
12441993428,4cyclictest41-21ksoftirqd/311:21:253
12441993428,4cyclictest41-21ksoftirqd/311:19:553
12441993428,4cyclictest41-21ksoftirqd/309:08:303
1244099346,25cyclictest223-21systemd-journal07:46:472
12440993429,3cyclictest33-21ksoftirqd/212:38:502
12440993428,4cyclictest33-21ksoftirqd/211:38:492
12440993428,4cyclictest33-21ksoftirqd/211:25:052
12440993428,4cyclictest33-21ksoftirqd/211:25:052
12440993428,4cyclictest33-21ksoftirqd/210:57:202
12440993412,19cyclictest24932-21cat11:55:132
12440993410,21cyclictest11490-21sed10:20:262
1244099340,21cyclictest0-21swapper/210:50:132
1244099340,20cyclictest0-21swapper/212:20:152
1244099340,19cyclictest0-21swapper/211:40:152
12439993430,3cyclictest25-21ksoftirqd/112:40:001
12439993429,3cyclictest25-21ksoftirqd/112:24:121
12439993429,3cyclictest25-21ksoftirqd/111:55:071
12439993429,3cyclictest25-21ksoftirqd/111:40:181
12439993429,3cyclictest25-21ksoftirqd/111:35:011
12439993429,3cyclictest25-21ksoftirqd/111:30:001
12439993429,3cyclictest25-21ksoftirqd/111:30:001
12439993429,3cyclictest25-21ksoftirqd/108:40:121
12439993429,3cyclictest25-21ksoftirqd/107:45:141
12439993428,4cyclictest25-21ksoftirqd/112:33:161
12439993428,4cyclictest25-21ksoftirqd/111:17:171
12439993428,4cyclictest25-21ksoftirqd/110:12:301
12439993427,5cyclictest25-21ksoftirqd/109:49:321
12438993430,3cyclictest9-21ksoftirqd/010:15:120
12438993428,4cyclictest9-21ksoftirqd/009:11:570
12438993428,3cyclictest9-21ksoftirqd/008:55:200
12438993427,4cyclictest9-21ksoftirqd/007:40:050
1243899341,7cyclictest9-21ksoftirqd/007:45:130
1243899341,5cyclictest9-21ksoftirqd/012:30:130
1243899341,2cyclictest121rcu_preempt11:20:230
134991330,1getstats0-21swapper/307:28:213
12441993327,4cyclictest41-21ksoftirqd/311:38:093
12441993327,4cyclictest41-21ksoftirqd/310:55:483
12441993327,4cyclictest41-21ksoftirqd/308:34:083
1244099339,21cyclictest12536-21grep08:15:122
12440993327,4cyclictest33-21ksoftirqd/208:50:552
12440993326,5cyclictest33-21ksoftirqd/210:16:372
12440993313,18cyclictest13565-21load07:10:192
12440993312,18cyclictest31091-21ptp4l-jitter12:05:232
12440993311,20cyclictest2522-21/usr/sbin/munin07:55:242
12440993311,20cyclictest2522-21/usr/sbin/munin07:55:242
12439993329,3cyclictest25-21ksoftirqd/109:05:141
12439993328,3cyclictest25-21ksoftirqd/107:31:431
12439993327,4cyclictest25-21ksoftirqd/109:57:341
12439993327,4cyclictest25-21ksoftirqd/109:57:341
12438993330,2cyclictest9-21ksoftirqd/011:55:000
12438993329,2cyclictest9-21ksoftirqd/011:40:230
12438993329,2cyclictest9-21ksoftirqd/008:30:130
12438993328,3cyclictest9-21ksoftirqd/012:00:130
12441993227,3cyclictest41-21ksoftirqd/309:55:133
12441993227,3cyclictest41-21ksoftirqd/309:55:133
12441993227,3cyclictest41-21ksoftirqd/309:27:063
12441993227,3cyclictest41-21ksoftirqd/308:20:103
12441993227,3cyclictest41-21ksoftirqd/307:35:023
12441993226,4cyclictest41-21ksoftirqd/310:01:293
12441993226,4cyclictest41-21ksoftirqd/308:04:073
1244099329,20cyclictest23313-21sed09:40:212
12440993226,4cyclictest33-21ksoftirqd/209:30:032
12440993226,4cyclictest33-21ksoftirqd/208:49:352
12440993226,4cyclictest33-21ksoftirqd/207:52:422
1244099321,28cyclictest7168-21/usr/sbin/munin09:10:222
12440993210,19cyclictest29995-21expr11:00:152
1244099320,29cyclictest1319-21snmpd09:07:032
12439993228,2cyclictest25-21ksoftirqd/109:00:191
12439993227,3cyclictest25-21ksoftirqd/111:50:181
12439993227,3cyclictest25-21ksoftirqd/111:48:131
12439993227,3cyclictest25-21ksoftirqd/109:12:441
12439993227,3cyclictest25-21ksoftirqd/107:13:291
12439993226,4cyclictest25-21ksoftirqd/112:20:001
12439993226,4cyclictest25-21ksoftirqd/110:07:251
12439993226,4cyclictest25-21ksoftirqd/110:01:431
12439993226,4cyclictest25-21ksoftirqd/108:58:571
12439993226,4cyclictest25-21ksoftirqd/108:05:531
12439993226,4cyclictest25-21ksoftirqd/108:01:071
138491310,0ptp4l401ktimersoftd/308:14:063
12441993125,4cyclictest41-21ksoftirqd/312:15:523
12441993125,4cyclictest41-21ksoftirqd/311:04:323
12441993125,4cyclictest41-21ksoftirqd/310:33:263
12441993125,4cyclictest41-21ksoftirqd/310:22:033
12441993125,4cyclictest41-21ksoftirqd/309:44:363
1244099319,19cyclictest9987-21expr09:15:132
1244099319,19cyclictest22075-21latency_hist10:45:002
1244099318,20cyclictest14909-21/usr/sbin/munin07:15:222
1244099318,20cyclictest14909-21/usr/sbin/munin07:15:212
12440993126,3cyclictest33-21ksoftirqd/211:31:512
12440993125,4cyclictest33-21ksoftirqd/210:12:552
1244099311,27cyclictest22230-21/usr/sbin/munin08:35:242
12440993110,18cyclictest5357-21fschecks_time11:15:162
12439993126,3cyclictest25-21ksoftirqd/111:00:201
12439993126,3cyclictest25-21ksoftirqd/110:50:161
12439993126,3cyclictest25-21ksoftirqd/109:35:011
12439993126,3cyclictest25-21ksoftirqd/109:15:101
12439993125,4cyclictest25-21ksoftirqd/110:49:411
12439993125,4cyclictest25-21ksoftirqd/108:49:341
12439993125,4cyclictest25-21ksoftirqd/107:28:581
1243999311,28cyclictest231rcuc/108:20:171
138491300,0ptp4l401ktimersoftd/312:37:533
138491300,0ptp4l401ktimersoftd/311:25:053
138491300,0ptp4l401ktimersoftd/311:25:053
138491300,0ptp4l401ktimersoftd/310:25:273
138491300,0ptp4l401ktimersoftd/308:18:433
12441993025,3cyclictest41-21ksoftirqd/310:35:133
12441993025,3cyclictest41-21ksoftirqd/308:40:013
12441993025,3cyclictest41-21ksoftirqd/307:15:103
12441993025,3cyclictest41-21ksoftirqd/307:15:103
12441993024,4cyclictest41-21ksoftirqd/311:51:173
12441993023,4cyclictest41-21ksoftirqd/310:12:323
1244099309,18cyclictest3069-21irqrtprio11:10:182
1244099307,21cyclictest0-21swapper/209:51:002
12440993025,3cyclictest33-21ksoftirqd/207:30:132
12440993024,4cyclictest33-21ksoftirqd/210:09:302
1244099301,26cyclictest24707-21/usr/sbin/munin08:40:132
1244099300,26cyclictest19771-21/usr/sbin/munin08:30:192
12439993024,4cyclictest25-21ksoftirqd/111:24:551
138491290,6ptp4l401ktimersoftd/307:32:383
138491290,0ptp4l401ktimersoftd/312:20:223
12441992923,4cyclictest41-21ksoftirqd/311:57:033
1244099296,20cyclictest223-21systemd-journal09:27:062
12440992923,4cyclictest33-21ksoftirqd/210:35:582
12440992923,4cyclictest33-21ksoftirqd/210:03:172
12439992923,4cyclictest25-21ksoftirqd/112:00:181
12441992823,3cyclictest41-21ksoftirqd/308:56:353
1244099287,19cyclictest10139-21cstates08:10:142
12440992824,3cyclictest33-21ksoftirqd/211:47:142
1244099281,24cyclictest25704-21ls09:45:192
1244099281,23cyclictest19856-21apt-get07:25:132
12439992823,3cyclictest25-21ksoftirqd/107:41:421
12439992822,4cyclictest25-21ksoftirqd/107:51:341
12441992723,2cyclictest41-21ksoftirqd/309:33:183
12441992722,3cyclictest41-21ksoftirqd/312:29:113
12441992722,3cyclictest41-21ksoftirqd/310:16:463
1244099271,23cyclictest18052-21iostat_ios08:25:172
1244099270,24cyclictest7528-21cat11:20:132
12439992620,4cyclictest25-21ksoftirqd/107:56:471
12439992620,4cyclictest25-21ksoftirqd/107:56:471
12441992520,3cyclictest41-21ksoftirqd/311:45:433
138491240,0ptp4l401ktimersoftd/309:51:173
138491230,0ptp4l401ktimersoftd/309:15:243
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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