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2026-04-14 - 07:24
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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 Apr 14, 2026 00:45:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
292972203168,23sleep00-21swapper/019:08:540
290702202170,21sleep10-21swapper/119:06:011
290772201168,22sleep30-21swapper/319:06:073
293272199165,23sleep20-21swapper/219:09:162
139391730,1ptp4l401ktimersoftd/321:30:283
2967899606,21cyclictest28704-21cat21:20:172
3712580,7sleep32967999cyclictest20:20:283
38882540,2sleep33893-21irqrtprio21:35:183
139391500,0ptp4l401ktimersoftd/319:37:313
134391500,1getstats0-21swapper/321:25:263
13482490,2sleep10-21swapper/119:15:271
176482480,2sleep20-21swapper/219:50:182
2967699450,4cyclictest8129-21seq23:56:020
29676994410,24cyclictest1317-21runrttasks23:50:490
2967699436,27cyclictest8301-21seq20:38:100
2967699436,27cyclictest8301-21seq20:38:100
139391430,0ptp4l401ktimersoftd/321:14:133
139391430,0ptp4l401ktimersoftd/321:05:023
139391430,0ptp4l401ktimersoftd/300:07:593
139391420,0ptp4l401ktimersoftd/320:31:583
139391420,0ptp4l401ktimersoftd/319:42:573
134391410,2getstats0-21swapper/321:00:263
29679994035,3cyclictest41-21ksoftirqd/300:14:593
29679993935,2cyclictest41-21ksoftirqd/323:19:593
29679993934,3cyclictest41-21ksoftirqd/300:00:013
29678993920,17cyclictest33-21ksoftirqd/222:50:122
29678993920,17cyclictest33-21ksoftirqd/222:50:112
2967899391,4cyclictest28869-21cron23:35:002
29676993910,18cyclictest1317-21runrttasks19:51:050
139391390,0ptp4l401ktimersoftd/323:10:113
139391390,0ptp4l401ktimersoftd/300:30:313
29679993833,3cyclictest41-21ksoftirqd/321:19:593
29679993833,3cyclictest41-21ksoftirqd/320:45:193
29679993833,3cyclictest41-21ksoftirqd/320:40:003
29679993833,3cyclictest41-21ksoftirqd/320:39:593
2967899384,32cyclictest26293-21awk23:30:002
2967699388,17cyclictest4297-21seq19:23:050
139391380,1ptp4l401ktimersoftd/322:09:043
29679993733,2cyclictest41-21ksoftirqd/319:30:013
29679993732,3cyclictest41-21ksoftirqd/321:45:003
29678993731,4cyclictest33-21ksoftirqd/220:29:062
29678993731,4cyclictest33-21ksoftirqd/219:19:182
29677993731,4cyclictest25-21ksoftirqd/121:59:461
29677993731,4cyclictest25-21ksoftirqd/121:23:351
29677993731,4cyclictest25-21ksoftirqd/120:56:131
29677993731,4cyclictest25-21ksoftirqd/120:33:181
29676993721,13cyclictest9-21ksoftirqd/000:10:100
139391370,1ptp4l391rcuc/322:17:263
139391370,0ptp4l401ktimersoftd/300:35:283
29679993633,2cyclictest41-21ksoftirqd/319:55:013
29679993632,3cyclictest41-21ksoftirqd/319:15:213
29679993631,3cyclictest41-21ksoftirqd/322:20:183
2967899369,25cyclictest1317-21runrttasks19:30:512
29678993614,19cyclictest2929-21df_inode22:40:142
29677993631,3cyclictest25-21ksoftirqd/119:36:301
29677993630,4cyclictest25-21ksoftirqd/122:21:491
29677993630,4cyclictest25-21ksoftirqd/120:38:271
29677993630,4cyclictest25-21ksoftirqd/120:38:271
29677993630,4cyclictest25-21ksoftirqd/120:12:121
29677993630,4cyclictest25-21ksoftirqd/100:04:391
29677993629,5cyclictest25-21ksoftirqd/119:33:571
57898350,2rtkit-daemon0-21swapper/123:35:051
29679993530,3cyclictest41-21ksoftirqd/323:00:013
29679993530,3cyclictest41-21ksoftirqd/322:39:593
29679993529,4cyclictest41-21ksoftirqd/320:42:313
29678993528,5cyclictest33-21ksoftirqd/220:42:382
29678993514,19cyclictest16208-21latency22:00:202
2967899351,31cyclictest0-21swapper/221:55:122
29677993530,3cyclictest25-21ksoftirqd/121:10:011
29677993529,4cyclictest25-21ksoftirqd/123:49:431
29677993529,4cyclictest25-21ksoftirqd/122:52:141
29677993529,4cyclictest25-21ksoftirqd/122:52:141
29677993529,4cyclictest25-21ksoftirqd/121:14:261
29677993529,4cyclictest25-21ksoftirqd/120:17:171
29677993529,4cyclictest25-21ksoftirqd/119:58:571
29677993529,4cyclictest25-21ksoftirqd/119:44:481
29676993530,3cyclictest9-21ksoftirqd/022:20:100
29676993530,3cyclictest9-21ksoftirqd/022:00:120
29679993429,3cyclictest9456-21cron22:55:003
29679993429,3cyclictest9456-21cron22:55:003
29679993429,3cyclictest41-21ksoftirqd/323:35:193
29679993429,3cyclictest41-21ksoftirqd/323:00:023
29679993429,3cyclictest41-21ksoftirqd/322:00:003
29679993429,3cyclictest41-21ksoftirqd/321:45:183
29679993429,3cyclictest41-21ksoftirqd/320:55:193
29679993429,3cyclictest41-21ksoftirqd/319:32:223
29679993428,4cyclictest41-21ksoftirqd/319:59:383
29679993428,3cyclictest41-21ksoftirqd/323:40:123
2967999340,2cyclictest121rcu_preempt20:15:263
29678993429,3cyclictest33-21ksoftirqd/221:50:112
29678993429,3cyclictest33-21ksoftirqd/221:06:332
29678993428,4cyclictest33-21ksoftirqd/223:06:592
29678993428,4cyclictest33-21ksoftirqd/222:32:252
29678993428,4cyclictest33-21ksoftirqd/222:25:312
29678993428,4cyclictest33-21ksoftirqd/220:55:332
29678993428,4cyclictest33-21ksoftirqd/220:49:322
29678993428,4cyclictest33-21ksoftirqd/220:02:182
29678993428,4cyclictest33-21ksoftirqd/219:48:262
2967899342,29cyclictest12308-21phc2sys-jitter00:05:222
29678993412,19cyclictest24185-21expr20:05:142
29678993411,20cyclictest15744-21sed20:55:012
2967899340,3cyclictest32022-21dpkg19:15:002
2967899340,3cyclictest14437-21turbostat.cron23:05:002
29677993429,3cyclictest25-21ksoftirqd/119:10:121
29677993429,3cyclictest15788-21cron00:14:591
29677993428,4cyclictest25-21ksoftirqd/123:53:321
29677993428,4cyclictest25-21ksoftirqd/123:31:251
29677993428,4cyclictest25-21ksoftirqd/123:17:081
29677993428,4cyclictest25-21ksoftirqd/122:38:211
29677993428,4cyclictest25-21ksoftirqd/122:14:431
29677993428,4cyclictest25-21ksoftirqd/121:48:281
29677993428,4cyclictest25-21ksoftirqd/120:41:201
29677993428,4cyclictest25-21ksoftirqd/120:20:381
29677993428,4cyclictest25-21ksoftirqd/100:34:241
29677993427,5cyclictest25-21ksoftirqd/122:35:001
29676993429,3cyclictest9-21ksoftirqd/023:15:120
29676993429,3cyclictest9-21ksoftirqd/022:25:210
29676993428,4cyclictest9-21ksoftirqd/020:40:590
29676993427,4cyclictest9-21ksoftirqd/021:11:120
29676993427,4cyclictest9-21ksoftirqd/020:53:030
29676993410,21cyclictest23217-21cut00:30:010
29679993329,3cyclictest41-21ksoftirqd/322:10:143
29679993329,2cyclictest41-21ksoftirqd/320:05:183
29679993328,3cyclictest41-21ksoftirqd/323:25:113
29679993328,3cyclictest41-21ksoftirqd/320:25:193
29679993328,3cyclictest41-21ksoftirqd/319:45:193
29679993328,3cyclictest41-21ksoftirqd/300:20:113
29679993327,4cyclictest41-21ksoftirqd/322:29:303
29679993327,4cyclictest41-21ksoftirqd/322:04:263
29679993327,4cyclictest41-21ksoftirqd/321:22:063
29679993327,3cyclictest41-21ksoftirqd/320:15:003
2967899339,21cyclictest5150-21fschecks_time19:25:152
29678993327,4cyclictest33-21ksoftirqd/200:02:022
29678993326,5cyclictest33-21ksoftirqd/223:46:182
29678993326,4cyclictest33-21ksoftirqd/223:15:062
2967899332,28cyclictest22760-21grep00:25:272
29678993314,17cyclictest20204-21apt22:10:112
29678993310,20cyclictest20549-21run-parts19:55:242
2967899330,4cyclictest28448-21latency_hist20:15:012
2967899330,3cyclictest8688-21date20:40:012
2967899330,3cyclictest389-21latency_hist21:30:012
2967899330,3cyclictest2630-21df_abs19:20:122
2967899330,3cyclictest0-21swapper/222:20:252
2967899330,31cyclictest11871-21apt-get23:00:002
29677993327,4cyclictest25-21ksoftirqd/123:00:411
29677993327,4cyclictest25-21ksoftirqd/119:26:511
29677993327,4cyclictest25-21ksoftirqd/100:27:531
29676993328,3cyclictest9-21ksoftirqd/023:44:590
29676993328,3cyclictest9-21ksoftirqd/020:29:120
29676993328,3cyclictest9-21ksoftirqd/019:30:030
29676993327,4cyclictest9-21ksoftirqd/021:48:430
29676993327,4cyclictest9-21ksoftirqd/019:56:300
29679993226,4cyclictest41-21ksoftirqd/300:03:493
29679993225,4cyclictest23175-21cron00:30:003
29678993227,3cyclictest33-21ksoftirqd/222:37:572
29678993227,3cyclictest33-21ksoftirqd/222:15:152
29678993226,4cyclictest33-21ksoftirqd/223:42:452
29678993226,4cyclictest33-21ksoftirqd/222:47:422
29678993226,4cyclictest33-21ksoftirqd/222:07:222
29678993226,4cyclictest33-21ksoftirqd/200:37:082
2967899322,28cyclictest10483-21kworker/2:120:34:092
29678993210,19cyclictest23424-21expr21:10:142
2967899320,4cyclictest21000-21sort00:25:012
2967899320,3cyclictest3309-21seq21:35:122
2967899320,3cyclictest0-21swapper/223:50:242
29677993228,3cyclictest25-21ksoftirqd/123:42:361
29677993227,3cyclictest25-21ksoftirqd/123:05:121
29677993227,3cyclictest25-21ksoftirqd/122:57:441
29677993227,3cyclictest25-21ksoftirqd/100:24:121
29677993227,3cyclictest25-21ksoftirqd/100:05:191
29677993226,4cyclictest25-21ksoftirqd/122:47:251
29677993226,4cyclictest25-21ksoftirqd/120:08:551
2967699329,20cyclictest18079-21sed21:00:010
2967699328,22cyclictest4264-21awk22:40:260
29676993227,3cyclictest9-21ksoftirqd/022:18:580
29676993227,3cyclictest9-21ksoftirqd/022:09:560
29676993227,3cyclictest9-21ksoftirqd/020:17:000
29676993227,3cyclictest9-21ksoftirqd/019:48:010
29676993227,3cyclictest9-21ksoftirqd/019:15:120
29676993226,4cyclictest9-21ksoftirqd/023:08:500
29676993226,3cyclictest9-21ksoftirqd/021:39:070
2967699320,3cyclictest13276-21cat20:50:010
29679993127,2cyclictest41-21ksoftirqd/323:50:253
29679993127,2cyclictest41-21ksoftirqd/323:45:213
29679993126,3cyclictest41-21ksoftirqd/323:34:173
29679993125,4cyclictest41-21ksoftirqd/322:45:543
29679993125,4cyclictest41-21ksoftirqd/320:04:563
29679993125,4cyclictest41-21ksoftirqd/319:22:153
29678993126,3cyclictest33-21ksoftirqd/200:30:182
29678993125,4cyclictest33-21ksoftirqd/219:37:352
29678993124,5cyclictest33-21ksoftirqd/220:36:042
2967899312,28cyclictest23875-21kworker/2:021:19:212
2967899311,28cyclictest23959-21sed23:25:012
2967899311,28cyclictest23959-21sed23:25:002
2967899310,4cyclictest8552-21cat00:00:002
2967899310,30cyclictest0-21swapper/221:05:012
29677993126,3cyclictest25-21ksoftirqd/120:51:551
29677993125,4cyclictest25-21ksoftirqd/121:31:111
29677993125,4cyclictest25-21ksoftirqd/120:29:011
29677993125,4cyclictest25-21ksoftirqd/119:50:091
29677993125,4cyclictest25-21ksoftirqd/119:48:161
29677993125,4cyclictest25-21ksoftirqd/119:22:331
29677993124,5cyclictest25-21ksoftirqd/121:17:511
29676993126,3cyclictest9-21ksoftirqd/021:15:130
29676993126,3cyclictest9-21ksoftirqd/000:04:050
29676993125,4cyclictest9-21ksoftirqd/022:52:370
29676993125,4cyclictest9-21ksoftirqd/022:52:360
29676993125,4cyclictest9-21ksoftirqd/021:57:130
29676993125,4cyclictest9-21ksoftirqd/021:06:340
29676993122,4cyclictest9-21ksoftirqd/021:23:390
29676993111,17cyclictest28447-21sed23:30:260
139391310,0ptp4l401ktimersoftd/322:30:053
29679993025,3cyclictest41-21ksoftirqd/321:55:013
29679993025,3cyclictest41-21ksoftirqd/319:12:303
29679993024,4cyclictest41-21ksoftirqd/300:15:033
2967899307,20cyclictest31527-21fschecks_count20:20:152
2967899306,21cyclictest29265-21cpuspeed_turbos23:35:132
29678993024,4cyclictest33-21ksoftirqd/221:44:152
2967899300,3cyclictest18451-21sensors_temp23:10:252
29677993025,3cyclictest25-21ksoftirqd/121:53:531
2967699309,18cyclictest31129-21phc2sys-jitter22:30:240
29676993025,3cyclictest9-21ksoftirqd/020:11:590
29676993025,3cyclictest9-21ksoftirqd/000:37:020
29676993025,3cyclictest9-21ksoftirqd/000:22:010
29676993024,4cyclictest9-21ksoftirqd/023:45:310
29676993024,4cyclictest9-21ksoftirqd/023:10:380
29676993024,4cyclictest9-21ksoftirqd/022:47:400
29676993024,4cyclictest9-21ksoftirqd/019:43:310
29676993013,15cyclictest6196-21iostat21:40:180
29676993012,15cyclictest11191-21cat19:35:250
2967699300,3cyclictest0-21swapper/023:20:250
2967699300,3cyclictest0-21swapper/023:20:250
29679992925,3cyclictest41-21ksoftirqd/323:20:193
29679992925,3cyclictest41-21ksoftirqd/323:20:193
29679992924,3cyclictest41-21ksoftirqd/320:51:123
29679992923,4cyclictest41-21ksoftirqd/323:07:043
2967899296,20cyclictest18215-21basename00:20:012
2967899292,4cyclictest12093-21apt-get19:40:122
29678992923,4cyclictest33-21ksoftirqd/220:18:072
29677992924,3cyclictest25-21ksoftirqd/121:01:491
29677992923,4cyclictest25-21ksoftirqd/123:26:361
29677992923,4cyclictest25-21ksoftirqd/122:16:361
29677992923,4cyclictest25-21ksoftirqd/122:06:091
29677992923,4cyclictest25-21ksoftirqd/121:35:561
29677992922,5cyclictest25-21ksoftirqd/121:41:221
2967799290,26cyclictest23918-21cron23:25:011
2967799290,26cyclictest23918-21cron23:25:001
2967699299,18cyclictest11576-21ptp4l21:50:230
2967699299,16cyclictest32433-21tr22:35:160
2967699298,18cyclictest22921-21sendmail_mailqu20:00:240
29676992924,3cyclictest9-21ksoftirqd/021:31:140
29676992924,3cyclictest9-21ksoftirqd/021:01:250
29676992924,3cyclictest9-21ksoftirqd/000:06:460
29676992923,4cyclictest9-21ksoftirqd/021:28:530
29676992923,4cyclictest9-21ksoftirqd/000:31:130
29676992923,3cyclictest9-21ksoftirqd/022:11:070
29676992912,14cyclictest4194-21df20:30:150
29679992823,3cyclictest41-21ksoftirqd/322:40:173
2967899286,19cyclictest9383-21cat21:45:252
2967899280,1cyclictest0-21swapper/221:35:012
29677992822,4cyclictest25-21ksoftirqd/121:28:261
2967699289,16cyclictest13650-21sendmail_mailqu23:00:240
29676992822,3cyclictest9-21ksoftirqd/022:55:490
2967699280,4cyclictest23952-21apt-get20:05:120
2967699280,3cyclictest31954-21latency_hist19:15:010
2967899271,3cyclictest0-21swapper/200:10:132
29677992721,4cyclictest25-21ksoftirqd/123:10:511
29677992721,4cyclictest25-21ksoftirqd/120:49:191
29677992721,4cyclictest25-21ksoftirqd/100:17:181
29676992722,3cyclictest9-21ksoftirqd/000:16:280
29676992721,4cyclictest9-21ksoftirqd/020:21:420
2967699270,4cyclictest25194-21memory23:25:200
29677992622,3cyclictest25-21ksoftirqd/100:38:571
29677992621,3cyclictest25-21ksoftirqd/120:01:441
29677992620,4cyclictest25-21ksoftirqd/122:41:141
29676992621,3cyclictest9-21ksoftirqd/023:38:250
29677992520,3cyclictest25-21ksoftirqd/122:27:221
2967699241,3cyclictest4911-21wc19:25:130
29677992318,3cyclictest25-21ksoftirqd/123:55:021
29677992015,3cyclictest15634-21df_inode22:00:141
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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