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2026-07-18 - 10:26
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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 Sat Jul 18, 2026 00:45:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
248492215168,36sleep30-21swapper/319:06:583
249972204170,22sleep20-21swapper/219:08:552
249032203170,22sleep00-21swapper/019:07:410
250542201167,23sleep10-21swapper/119:09:371
928821500,7sleep32537899cyclictest19:40:203
241632600,2sleep10-21swapper/100:30:231
25375995337,13cyclictest9-21ksoftirqd/021:55:000
148202520,2sleep20-21swapper/222:00:282
2537799511,47cyclictest11699-21ptp4l00:05:232
2537799511,47cyclictest11699-21ptp4l00:05:232
2537799470,3cyclictest19246-21ps00:20:232
17082470,2sleep00-21swapper/022:40:210
2537799450,43cyclictest0-21swapper/220:05:232
138491440,0ptp4l401ktimersoftd/319:47:473
25376994337,3cyclictest5142-21cron23:55:001
138491430,0ptp4l401ktimersoftd/323:56:323
2537799420,41cyclictest0-21swapper/222:20:232
138491420,1ptp4l401ktimersoftd/321:47:133
138491420,0ptp4l401ktimersoftd/321:57:093
2537799410,1cyclictest0-21swapper/223:40:232
138491410,0ptp4l401ktimersoftd/321:00:223
138491410,0ptp4l401ktimersoftd/321:00:223
50798400,4rtkit-daemon25370-21apt-get23:30:111
25378994035,3cyclictest41-21ksoftirqd/321:40:003
25377994011,27cyclictest0-21swapper/223:05:332
25377994011,27cyclictest0-21swapper/221:50:232
2537799400,38cyclictest0-21swapper/200:35:132
138491400,1ptp4l401ktimersoftd/319:53:093
138491400,0ptp4l401ktimersoftd/320:05:293
50798390,2rtkit-daemon0-21swapper/120:12:101
50798390,1rtkit-daemon0-21swapper/121:02:171
50798390,1rtkit-daemon0-21swapper/121:02:171
2537799390,37cyclictest0-21swapper/221:20:332
25376993911,26cyclictest0-21swapper/123:26:331
1385913932,3phc2sys0-21swapper/319:10:003
138491390,0ptp4l401ktimersoftd/322:25:273
25378993833,3cyclictest41-21ksoftirqd/323:40:003
2537799389,27cyclictest0-21swapper/219:20:532
25377993822,13cyclictest33-21ksoftirqd/221:01:082
25377993822,13cyclictest33-21ksoftirqd/221:01:072
25376993832,4cyclictest25-21ksoftirqd/119:47:081
25376993831,4cyclictest25-21ksoftirqd/122:35:051
25376993830,6cyclictest25-21ksoftirqd/100:35:561
2537699380,36cyclictest0-21swapper/123:06:531
25378993732,2cyclictest41-21ksoftirqd/319:35:013
25378993731,4cyclictest41-21ksoftirqd/322:09:153
25378993730,4cyclictest41-21ksoftirqd/300:06:543
25378993730,4cyclictest41-21ksoftirqd/300:06:533
25377993730,4cyclictest33-21ksoftirqd/222:51:202
25376993731,4cyclictest25-21ksoftirqd/120:59:571
25376993731,4cyclictest25-21ksoftirqd/100:16:591
25376993730,5cyclictest25-21ksoftirqd/123:49:101
25376993730,4cyclictest25-21ksoftirqd/123:58:251
2537699370,34cyclictest4225-21uname19:30:201
25375993732,3cyclictest9-21ksoftirqd/019:15:120
25375993732,3cyclictest9-21ksoftirqd/019:15:120
25375993731,4cyclictest9-21ksoftirqd/023:21:170
25375993731,4cyclictest9-21ksoftirqd/019:12:170
25375993729,5cyclictest9-21ksoftirqd/000:23:150
25378993630,4cyclictest41-21ksoftirqd/300:36:463
2537799366,28cyclictest0-21swapper/223:19:332
25377993630,4cyclictest33-21ksoftirqd/223:35:522
25377993630,4cyclictest33-21ksoftirqd/200:02:112
25377993629,5cyclictest33-21ksoftirqd/221:46:242
25377993629,4cyclictest33-21ksoftirqd/222:10:502
25377993613,20cyclictest18425-21sed20:00:122
25376993630,4cyclictest25-21ksoftirqd/122:13:101
25376993630,4cyclictest25-21ksoftirqd/121:11:311
25376993630,4cyclictest25-21ksoftirqd/119:44:271
2537699360,1cyclictest0-21swapper/122:20:431
25375993630,4cyclictest9-21ksoftirqd/022:12:090
25375993630,4cyclictest9-21ksoftirqd/021:27:080
138491360,1ptp4l401ktimersoftd/323:15:103
138491360,0ptp4l401ktimersoftd/323:53:533
50798350,3rtkit-daemon25530-21apache220:01:463
25378993529,4cyclictest41-21ksoftirqd/323:33:363
25378993529,4cyclictest41-21ksoftirqd/322:54:203
25378993529,4cyclictest41-21ksoftirqd/320:41:143
25378993529,3cyclictest41-21ksoftirqd/300:35:003
25378993528,4cyclictest41-21ksoftirqd/320:59:513
2537799356,27cyclictest0-21swapper/219:55:342
25377993530,3cyclictest33-21ksoftirqd/200:13:302
25377993529,4cyclictest33-21ksoftirqd/221:40:352
25377993528,4cyclictest33-21ksoftirqd/220:17:252
2537799350,2cyclictest0-21swapper/222:05:232
25376993530,3cyclictest25-21ksoftirqd/122:26:541
25376993529,4cyclictest25-21ksoftirqd/122:02:001
25375993530,3cyclictest9-21ksoftirqd/022:51:170
25375993529,4cyclictest9-21ksoftirqd/021:58:410
25375993529,4cyclictest9-21ksoftirqd/021:40:100
25375993529,4cyclictest9-21ksoftirqd/021:18:490
25375993529,4cyclictest9-21ksoftirqd/000:30:300
25375993512,3cyclictest16130-21ls19:55:180
25378993431,2cyclictest41-21ksoftirqd/322:10:233
25378993429,3cyclictest41-21ksoftirqd/322:50:003
25378993429,2cyclictest41-21ksoftirqd/322:40:003
25378993429,2cyclictest41-21ksoftirqd/321:15:133
25378993428,4cyclictest41-21ksoftirqd/322:58:143
25378993428,4cyclictest41-21ksoftirqd/319:26:323
25378993428,4cyclictest41-21ksoftirqd/300:27:083
25378993427,5cyclictest41-21ksoftirqd/323:48:413
25378993427,4cyclictest41-21ksoftirqd/300:02:443
25377993428,4cyclictest33-21ksoftirqd/221:38:372
25377993428,4cyclictest33-21ksoftirqd/200:18:402
25377993427,4cyclictest33-21ksoftirqd/219:29:432
25377993426,5cyclictest33-21ksoftirqd/220:33:592
2537699346,26cyclictest0-21swapper/120:01:331
25376993428,4cyclictest25-21ksoftirqd/123:16:051
25376993428,4cyclictest25-21ksoftirqd/122:17:561
25376993428,4cyclictest25-21ksoftirqd/121:48:311
25376993428,4cyclictest25-21ksoftirqd/119:37:061
25376993428,4cyclictest25-21ksoftirqd/119:22:371
25376993428,4cyclictest25-21ksoftirqd/100:15:001
25376993427,4cyclictest25-21ksoftirqd/120:35:301
25375993429,3cyclictest9-21ksoftirqd/023:29:240
25375993429,3cyclictest9-21ksoftirqd/020:05:100
25375993429,3cyclictest9-21ksoftirqd/019:40:570
25375993428,4cyclictest9-21ksoftirqd/023:49:220
25375993428,4cyclictest9-21ksoftirqd/022:49:280
25375993428,4cyclictest9-21ksoftirqd/022:03:310
25375993428,4cyclictest9-21ksoftirqd/021:49:310
25375993428,4cyclictest9-21ksoftirqd/021:30:530
25375993428,4cyclictest9-21ksoftirqd/020:43:150
25375993428,4cyclictest9-21ksoftirqd/020:38:420
25375993428,4cyclictest9-21ksoftirqd/020:27:110
25375993427,5cyclictest9-21ksoftirqd/020:19:440
25375993427,4cyclictest17824-21idleruntime-cro22:10:000
25375993412,3cyclictest8988-21cat20:45:170
25378993328,3cyclictest41-21ksoftirqd/323:06:583
25378993328,3cyclictest41-21ksoftirqd/321:27:043
25378993328,2cyclictest41-21ksoftirqd/321:20:193
25378993327,4cyclictest41-21ksoftirqd/323:41:423
25378993327,4cyclictest41-21ksoftirqd/321:43:363
25378993326,4cyclictest41-21ksoftirqd/322:19:183
25378993326,4cyclictest41-21ksoftirqd/320:27:293
25378993326,4cyclictest41-21ksoftirqd/300:22:463
25377993328,3cyclictest33-21ksoftirqd/223:45:112
25377993328,3cyclictest33-21ksoftirqd/222:41:282
25377993328,3cyclictest33-21ksoftirqd/221:27:242
25377993328,3cyclictest33-21ksoftirqd/219:19:262
25377993328,3cyclictest33-21ksoftirqd/219:19:262
25377993327,4cyclictest33-21ksoftirqd/223:56:102
25377993327,4cyclictest33-21ksoftirqd/223:32:432
25377993327,4cyclictest33-21ksoftirqd/223:14:412
25377993327,4cyclictest33-21ksoftirqd/223:03:262
25377993327,4cyclictest33-21ksoftirqd/222:59:012
25377993327,4cyclictest33-21ksoftirqd/222:45:372
25377993327,4cyclictest33-21ksoftirqd/222:27:112
25377993327,4cyclictest33-21ksoftirqd/221:07:132
25377993327,4cyclictest33-21ksoftirqd/220:55:532
25377993326,4cyclictest33-21ksoftirqd/220:26:212
25377993312,18cyclictest12078-21mailstats19:45:252
25377993312,18cyclictest10953-21cat20:50:142
25377993311,19cyclictest28299-21df_abs20:20:142
25376993328,3cyclictest25-21ksoftirqd/123:00:101
25376993327,4cyclictest25-21ksoftirqd/122:30:041
25376993327,4cyclictest25-21ksoftirqd/122:30:031
25376993327,4cyclictest25-21ksoftirqd/119:55:581
25376993327,4cyclictest25-21ksoftirqd/100:22:401
25376993326,4cyclictest25-21ksoftirqd/123:20:301
25376993326,4cyclictest25-21ksoftirqd/120:09:301
25375993329,3cyclictest9-21ksoftirqd/021:14:120
25375993328,3cyclictest9-21ksoftirqd/023:43:440
25375993328,3cyclictest9-21ksoftirqd/023:02:160
25375993328,3cyclictest9-21ksoftirqd/000:05:110
25375993328,3cyclictest9-21ksoftirqd/000:05:110
25375993327,4cyclictest9-21ksoftirqd/022:38:570
25375993327,4cyclictest9-21ksoftirqd/022:19:470
25375993327,4cyclictest9-21ksoftirqd/021:24:550
25375993327,4cyclictest9-21ksoftirqd/021:07:390
25375993327,4cyclictest9-21ksoftirqd/020:21:530
25375993327,4cyclictest9-21ksoftirqd/019:21:110
25375993313,3cyclictest29103-21wc22:30:210
25375993313,3cyclictest29103-21wc22:30:210
25375993313,2cyclictest374-21/usr/sbin/munin19:25:090
2537599330,3cyclictest121rcu_preempt22:55:590
138491330,11ptp4l0-21swapper/323:26:253
25378993227,3cyclictest41-21ksoftirqd/323:20:433
25378993227,3cyclictest41-21ksoftirqd/321:51:183
25378993227,3cyclictest41-21ksoftirqd/320:17:283
25378993227,3cyclictest41-21ksoftirqd/300:15:193
25378993226,4cyclictest41-21ksoftirqd/322:24:203
25378993226,4cyclictest41-21ksoftirqd/319:21:353
25377993228,3cyclictest33-21ksoftirqd/220:46:382
25377993227,3cyclictest33-21ksoftirqd/223:24:462
25377993227,3cyclictest33-21ksoftirqd/222:18:412
25377993227,3cyclictest33-21ksoftirqd/220:44:452
25377993227,3cyclictest33-21ksoftirqd/219:10:112
25377993226,4cyclictest33-21ksoftirqd/222:37:262
25377993226,4cyclictest33-21ksoftirqd/220:14:412
2537699323,27cyclictest0-21swapper/121:50:431
25376993226,4cyclictest25-21ksoftirqd/123:39:041
25376993226,4cyclictest25-21ksoftirqd/121:38:321
25376993226,4cyclictest25-21ksoftirqd/121:32:261
25376993225,4cyclictest25-21ksoftirqd/120:48:391
25375993228,3cyclictest9-21ksoftirqd/022:29:020
25375993227,3cyclictest9-21ksoftirqd/019:37:360
25375993226,4cyclictest9-21ksoftirqd/023:32:450
25375993226,4cyclictest9-21ksoftirqd/023:08:090
25375993226,4cyclictest9-21ksoftirqd/021:36:060
25375993226,4cyclictest9-21ksoftirqd/020:30:480
25375993226,4cyclictest9-21ksoftirqd/020:12:380
25375993226,3cyclictest9-21ksoftirqd/021:00:170
25375993226,3cyclictest9-21ksoftirqd/021:00:160
209012320,5sleep220906-21fschecks_time00:25:142
138491320,11ptp4l0-21swapper/319:35:403
138491320,0ptp4l401ktimersoftd/322:35:003
138491320,0ptp4l401ktimersoftd/322:35:003
138491320,0ptp4l401ktimersoftd/321:32:463
138491320,0ptp4l401ktimersoftd/320:46:323
25378993126,3cyclictest41-21ksoftirqd/320:32:283
2537799318,3cyclictest29757-21grep22:30:272
2537799318,3cyclictest29757-21grep22:30:272
2537799318,3cyclictest14072-21cut19:50:192
2537799317,4cyclictest223-21systemd-journal19:30:222
25377993126,3cyclictest33-21ksoftirqd/223:51:422
25377993126,3cyclictest33-21ksoftirqd/221:31:582
25377993125,4cyclictest33-21ksoftirqd/221:56:262
2537799310,2cyclictest2697-21apt-get20:35:032
25376993126,3cyclictest25-21ksoftirqd/120:55:011
25376993126,3cyclictest25-21ksoftirqd/120:25:391
25376993125,3cyclictest25-21ksoftirqd/100:02:031
25375993126,3cyclictest9-21ksoftirqd/023:51:020
25375993126,3cyclictest9-21ksoftirqd/000:36:130
25375993125,4cyclictest9-21ksoftirqd/023:19:330
25375993125,4cyclictest9-21ksoftirqd/020:57:310
25375993125,4cyclictest9-21ksoftirqd/019:47:520
25375993111,3cyclictest9437-21cat00:00:280
138491310,0ptp4l401ktimersoftd/322:03:363
138491310,0ptp4l401ktimersoftd/319:16:353
138491310,0ptp4l401ktimersoftd/319:16:353
25378993025,3cyclictest41-21ksoftirqd/320:10:183
25378993024,4cyclictest41-21ksoftirqd/321:13:113
25378993023,4cyclictest41-21ksoftirqd/320:39:573
2537699303,26cyclictest0-21swapper/122:05:431
25376993024,4cyclictest25-21ksoftirqd/122:40:381
25376993024,3cyclictest2677-21cron20:35:001
25376993024,3cyclictest25-21ksoftirqd/123:10:451
25376993023,5cyclictest25-21ksoftirqd/121:28:381
2537699300,29cyclictest0-21swapper/119:25:241
25375993025,3cyclictest9-21ksoftirqd/020:00:340
25375993024,3cyclictest9-21ksoftirqd/019:31:460
138491300,0ptp4l401ktimersoftd/323:10:263
138491300,0ptp4l401ktimersoftd/320:51:103
25378992924,3cyclictest41-21ksoftirqd/323:04:453
25378992924,3cyclictest41-21ksoftirqd/319:55:193
25378992923,4cyclictest41-21ksoftirqd/300:14:163
25378992923,3cyclictest41-21ksoftirqd/321:07:183
25378992922,4cyclictest41-21ksoftirqd/320:20:113
25377992911,3cyclictest24241-21ptp4l-jitter00:30:232
25376992923,4cyclictest25-21ksoftirqd/123:40:521
25376992923,4cyclictest25-21ksoftirqd/122:56:391
25376992923,4cyclictest25-21ksoftirqd/119:13:421
25375992924,3cyclictest9-21ksoftirqd/023:10:260
25375992924,3cyclictest9-21ksoftirqd/019:51:500
25377992822,4cyclictest33-21ksoftirqd/221:14:182
25377992822,4cyclictest33-21ksoftirqd/219:40:352
25376992823,3cyclictest25-21ksoftirqd/121:44:251
25376992823,3cyclictest25-21ksoftirqd/100:27:211
25376992822,4cyclictest25-21ksoftirqd/120:40:351
25376992822,4cyclictest25-21ksoftirqd/119:16:071
25376992822,4cyclictest25-21ksoftirqd/119:16:061
25376992822,4cyclictest25-21ksoftirqd/100:08:281
25376992822,4cyclictest25-21ksoftirqd/100:08:281
25375992823,3cyclictest9-21ksoftirqd/023:59:040
25375992823,3cyclictest9-21ksoftirqd/020:53:540
25375992822,4cyclictest9-21ksoftirqd/000:11:000
25378992722,3cyclictest41-21ksoftirqd/322:41:023
25377992722,3cyclictest33-21ksoftirqd/221:15:142
2537699273,22cyclictest0-21swapper/121:20:441
25376992721,4cyclictest25-21ksoftirqd/121:05:351
25375992722,3cyclictest9-21ksoftirqd/023:38:180
25375992722,3cyclictest9-21ksoftirqd/000:27:120
25377992619,4cyclictest33-21ksoftirqd/223:25:042
2537699266,19cyclictest0-21swapper/121:17:231
25376992619,4cyclictest25-21ksoftirqd/120:19:541
25377992520,3cyclictest33-21ksoftirqd/219:38:042
25376992520,3cyclictest25-21ksoftirqd/122:52:101
2537699250,1cyclictest0-21swapper/120:21:541
25375992520,3cyclictest9-21ksoftirqd/000:15:370
25376992419,3cyclictest25-21ksoftirqd/121:55:191
25376992418,4cyclictest25-21ksoftirqd/122:48:371
25376992217,3cyclictest25-21ksoftirqd/119:52:211
25375991813,3cyclictest24384-21cut22:20:230
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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