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2026-08-15 - 11:26
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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 792 highest latencies:
System rackdslot4.osadl.org (updated Sat Aug 15, 2026 00:45:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
246872207173,22sleep30-21swapper/319:07:243
245362202169,21sleep00-21swapper/019:05:330
245992200167,22sleep20-21swapper/219:06:152
246902199166,22sleep10-21swapper/119:07:261
1882421450,6sleep32518599cyclictest23:15:243
2518499672,62cyclictest19700-21turbostat20:05:002
2518399620,21cyclictest22336-21date21:15:001
70162610,2sleep10-21swapper/122:55:001
242042570,5sleep024209-21unixbench_multi20:10:270
138491550,1ptp4l401ktimersoftd/319:52:323
148692510,3sleep32518599cyclictest22:05:123
109272500,2sleep20-21swapper/221:55:202
230592490,2sleep30-21swapper/321:15:173
25184994842,3cyclictest4410-21ls23:54:592
262192440,1sleep10-21swapper/121:20:221
262192440,1sleep10-21swapper/121:20:211
2518399440,42cyclictest0-21swapper/121:25:231
25185994315,26cyclictest17143-21kworker/3:120:15:233
138491430,0ptp4l401ktimersoftd/320:54:553
138491430,0ptp4l401ktimersoftd/319:25:503
25185994228,12cyclictest41-21ksoftirqd/320:25:003
2518399420,2cyclictest0-21swapper/100:12:421
138491420,0ptp4l401ktimersoftd/322:35:253
138491420,0ptp4l401ktimersoftd/321:45:163
138491420,0ptp4l401ktimersoftd/321:08:323
138491420,0ptp4l401ktimersoftd/320:45:173
138491420,0ptp4l401ktimersoftd/320:03:333
135191410,1getstats0-21swapper/321:12:513
25184993932,5cyclictest33-21ksoftirqd/200:25:002
25184993932,5cyclictest33-21ksoftirqd/200:24:592
138491390,0ptp4l401ktimersoftd/319:46:373
25185993832,4cyclictest41-21ksoftirqd/320:34:413
2518499380,1cyclictest0-21swapper/223:49:022
2518399380,36cyclictest0-21swapper/120:50:231
25185993731,4cyclictest41-21ksoftirqd/320:37:023
25184993732,3cyclictest33-21ksoftirqd/223:10:122
25184993731,4cyclictest33-21ksoftirqd/222:18:432
25184993731,4cyclictest33-21ksoftirqd/220:42:182
25183993732,3cyclictest25-21ksoftirqd/119:25:111
25183993730,5cyclictest25-21ksoftirqd/122:18:461
25182993732,3cyclictest4773-21cron21:45:000
50798360,2rtkit-daemon0-21swapper/200:19:232
25185993631,3cyclictest41-21ksoftirqd/319:20:353
25185993629,5cyclictest41-21ksoftirqd/323:12:483
25184993631,3cyclictest33-21ksoftirqd/223:35:102
25184993630,4cyclictest33-21ksoftirqd/221:42:282
25184993630,4cyclictest33-21ksoftirqd/221:23:062
25184993630,4cyclictest33-21ksoftirqd/221:23:062
25184993630,4cyclictest33-21ksoftirqd/219:26:282
25184993630,4cyclictest33-21ksoftirqd/200:32:532
25184993629,5cyclictest33-21ksoftirqd/221:35:542
25183993630,4cyclictest25-21ksoftirqd/121:55:071
25183993630,4cyclictest25-21ksoftirqd/120:59:401
25183993629,5cyclictest25-21ksoftirqd/123:17:551
25182993631,3cyclictest30159-21fschecks_count22:35:160
25185993529,4cyclictest41-21ksoftirqd/323:07:493
25184993529,4cyclictest33-21ksoftirqd/222:20:472
25184993529,4cyclictest33-21ksoftirqd/221:19:532
25184993529,4cyclictest33-21ksoftirqd/221:08:182
25184993529,4cyclictest33-21ksoftirqd/220:55:302
25184993529,4cyclictest33-21ksoftirqd/219:36:042
25183993530,3cyclictest25-21ksoftirqd/123:55:091
25183993529,4cyclictest25-21ksoftirqd/122:37:511
25183993529,4cyclictest25-21ksoftirqd/120:13:571
25182993531,2cyclictest19591-21dump-pmu-power00:25:000
25182993531,2cyclictest19591-21dump-pmu-power00:25:000
25182993529,4cyclictest9-21ksoftirqd/023:13:290
25182993529,4cyclictest9-21ksoftirqd/022:41:440
25182993529,4cyclictest9-21ksoftirqd/022:32:290
25182993529,4cyclictest9-21ksoftirqd/021:07:280
25182993529,4cyclictest9-21ksoftirqd/020:35:340
25182993529,4cyclictest9-21ksoftirqd/000:37:050
138491350,28ptp4l35792irq/125-enp1s0-22:30:113
138491350,0ptp4l401ktimersoftd/320:40:173
25185993429,3cyclictest41-21ksoftirqd/323:00:013
25185993428,4cyclictest41-21ksoftirqd/322:17:523
25185993428,4cyclictest41-21ksoftirqd/322:03:113
25185993428,4cyclictest41-21ksoftirqd/321:55:573
25185993428,4cyclictest41-21ksoftirqd/319:44:593
25185993428,4cyclictest41-21ksoftirqd/300:15:383
25184993429,3cyclictest33-21ksoftirqd/223:21:212
25184993429,3cyclictest33-21ksoftirqd/220:46:242
25184993429,3cyclictest33-21ksoftirqd/220:05:072
25184993429,3cyclictest33-21ksoftirqd/219:19:082
25184993428,4cyclictest33-21ksoftirqd/222:28:262
25184993428,4cyclictest33-21ksoftirqd/222:11:252
25184993428,4cyclictest33-21ksoftirqd/222:03:302
25184993428,4cyclictest33-21ksoftirqd/220:35:132
25184993428,4cyclictest33-21ksoftirqd/219:41:382
25184993427,4cyclictest33-21ksoftirqd/220:12:302
25183993429,3cyclictest25-21ksoftirqd/121:40:121
25183993429,3cyclictest25-21ksoftirqd/121:30:401
25183993428,4cyclictest25-21ksoftirqd/123:54:541
25183993428,4cyclictest25-21ksoftirqd/121:47:531
25183993428,4cyclictest25-21ksoftirqd/121:00:511
25183993428,4cyclictest25-21ksoftirqd/120:35:431
25183993427,4cyclictest25-21ksoftirqd/119:39:391
2518399341,20cyclictest1303-21runrttasks19:32:521
25182993429,3cyclictest9-21ksoftirqd/019:45:010
25182993428,4cyclictest9-21ksoftirqd/021:26:170
25182993428,4cyclictest9-21ksoftirqd/019:33:400
25182993428,4cyclictest9-21ksoftirqd/000:05:440
25182993427,4cyclictest9-21ksoftirqd/023:58:410
2518299341,3cyclictest121rcu_preempt21:50:170
2518299341,3cyclictest121rcu_preempt21:50:170
138491340,0ptp4l401ktimersoftd/319:30:253
25185993328,3cyclictest41-21ksoftirqd/321:50:333
25185993328,3cyclictest41-21ksoftirqd/321:50:333
25185993328,3cyclictest41-21ksoftirqd/300:25:093
25185993328,3cyclictest41-21ksoftirqd/300:02:263
25185993327,4cyclictest41-21ksoftirqd/323:31:293
25185993327,4cyclictest41-21ksoftirqd/322:40:463
25185993327,4cyclictest41-21ksoftirqd/300:20:563
25185993327,4cyclictest41-21ksoftirqd/300:20:563
25185993320,11cyclictest41-21ksoftirqd/320:15:003
25185993315,16cyclictest41-21ksoftirqd/300:10:003
25184993328,3cyclictest33-21ksoftirqd/223:40:102
25184993327,4cyclictest33-21ksoftirqd/223:31:472
25184993327,4cyclictest33-21ksoftirqd/222:36:522
25184993327,4cyclictest33-21ksoftirqd/222:32:032
25184993327,4cyclictest33-21ksoftirqd/219:22:112
25183993328,3cyclictest25-21ksoftirqd/100:20:591
25183993328,3cyclictest25-21ksoftirqd/100:20:591
25183993327,4cyclictest25-21ksoftirqd/123:28:301
25183993327,4cyclictest25-21ksoftirqd/122:48:591
25183993327,4cyclictest25-21ksoftirqd/121:18:001
25182993328,3cyclictest9-21ksoftirqd/022:25:100
25182993328,3cyclictest9-21ksoftirqd/021:55:580
25182993327,4cyclictest9-21ksoftirqd/022:24:220
25182993327,4cyclictest9-21ksoftirqd/022:02:390
25182993327,4cyclictest9-21ksoftirqd/021:22:200
25182993327,4cyclictest9-21ksoftirqd/021:22:200
25182993327,4cyclictest9-21ksoftirqd/020:52:560
25182993327,4cyclictest9-21ksoftirqd/020:49:550
25182993327,4cyclictest9-21ksoftirqd/019:45:370
25182993327,4cyclictest9-21ksoftirqd/019:25:100
25182993326,5cyclictest9-21ksoftirqd/022:12:150
25182993326,4cyclictest9-21ksoftirqd/020:17:090
25185993227,3cyclictest41-21ksoftirqd/323:45:133
25185993227,3cyclictest41-21ksoftirqd/323:04:183
25185993227,3cyclictest41-21ksoftirqd/322:50:243
25185993227,3cyclictest41-21ksoftirqd/319:35:093
25185993226,4cyclictest41-21ksoftirqd/323:55:103
25185993226,4cyclictest41-21ksoftirqd/323:20:463
25185993226,4cyclictest41-21ksoftirqd/322:10:493
25185993226,4cyclictest41-21ksoftirqd/319:11:413
25185993226,4cyclictest41-21ksoftirqd/319:11:413
25184993227,3cyclictest33-21ksoftirqd/223:05:252
25184993227,3cyclictest33-21ksoftirqd/222:07:522
25184993227,3cyclictest33-21ksoftirqd/221:12:292
25184993227,3cyclictest33-21ksoftirqd/219:30:092
25184993227,3cyclictest33-21ksoftirqd/200:05:132
25184993226,4cyclictest33-21ksoftirqd/220:50:492
25184993226,4cyclictest33-21ksoftirqd/220:31:032
25184993226,4cyclictest33-21ksoftirqd/220:18:352
25184993226,4cyclictest33-21ksoftirqd/219:48:232
25184993226,4cyclictest33-21ksoftirqd/200:13:202
25183993228,3cyclictest25-21ksoftirqd/123:48:061
25183993227,3cyclictest25-21ksoftirqd/123:05:111
25183993226,4cyclictest25-21ksoftirqd/123:33:241
25183993226,4cyclictest25-21ksoftirqd/122:56:411
25183993226,4cyclictest25-21ksoftirqd/122:34:021
25183993226,4cyclictest25-21ksoftirqd/120:44:101
25183993226,4cyclictest25-21ksoftirqd/120:15:121
25183993226,4cyclictest25-21ksoftirqd/100:07:261
25182993227,3cyclictest9-21ksoftirqd/023:01:010
25182993227,3cyclictest9-21ksoftirqd/022:45:080
25182993227,3cyclictest9-21ksoftirqd/021:37:050
25182993227,3cyclictest9-21ksoftirqd/020:03:090
25182993227,3cyclictest9-21ksoftirqd/000:34:360
25182993227,3cyclictest9-21ksoftirqd/000:16:230
25182993226,4cyclictest9-21ksoftirqd/023:51:470
25182993226,4cyclictest9-21ksoftirqd/020:40:440
25182993226,4cyclictest9-21ksoftirqd/019:22:130
25182993226,4cyclictest9-21ksoftirqd/000:29:060
138491320,0ptp4l401ktimersoftd/322:20:123
25185993126,3cyclictest41-21ksoftirqd/323:41:063
25185993126,3cyclictest41-21ksoftirqd/323:36:283
25185993126,3cyclictest41-21ksoftirqd/321:38:333
25185993125,4cyclictest41-21ksoftirqd/321:43:353
25185993125,4cyclictest41-21ksoftirqd/321:02:133
25185993125,4cyclictest41-21ksoftirqd/319:17:073
25185993125,4cyclictest41-21ksoftirqd/300:11:523
25184993126,3cyclictest33-21ksoftirqd/220:26:402
25184993125,4cyclictest33-21ksoftirqd/223:17:162
25184993125,4cyclictest33-21ksoftirqd/221:45:092
25183993127,3cyclictest25-21ksoftirqd/119:19:361
25183993125,4cyclictest25-21ksoftirqd/122:40:441
25183993125,4cyclictest25-21ksoftirqd/122:21:421
25183993125,4cyclictest25-21ksoftirqd/121:08:251
25183993125,4cyclictest25-21ksoftirqd/120:30:421
25183993125,4cyclictest25-21ksoftirqd/119:48:381
25183993124,4cyclictest25-21ksoftirqd/119:20:061
25182993126,3cyclictest9531-21cron00:05:010
25182993126,3cyclictest9-21ksoftirqd/021:50:000
25182993126,3cyclictest9-21ksoftirqd/020:25:320
25182993125,4cyclictest9-21ksoftirqd/023:26:490
25182993125,4cyclictest9-21ksoftirqd/021:02:510
138491310,0ptp4l401ktimersoftd/322:28:203
138491310,0ptp4l401ktimersoftd/321:30:333
25185993026,3cyclictest41-21ksoftirqd/300:35:013
25185993025,3cyclictest41-21ksoftirqd/321:26:473
25185993024,4cyclictest41-21ksoftirqd/323:25:433
25184993024,4cyclictest33-21ksoftirqd/222:53:172
25184993024,4cyclictest33-21ksoftirqd/222:48:232
25183993024,4cyclictest25-21ksoftirqd/123:04:511
25183993024,4cyclictest25-21ksoftirqd/120:09:561
25183993024,4cyclictest25-21ksoftirqd/119:56:161
25183993024,4cyclictest25-21ksoftirqd/100:37:151
25183993024,4cyclictest25-21ksoftirqd/100:03:411
25183993011,16cyclictest32186-21cut20:30:001
25182993026,3cyclictest9-21ksoftirqd/022:05:400
25182993025,3cyclictest9-21ksoftirqd/023:10:000
25182993025,3cyclictest9-21ksoftirqd/019:19:040
25182993024,4cyclictest9-21ksoftirqd/022:57:560
138491300,0ptp4l401ktimersoftd/323:54:083
138491300,0ptp4l401ktimersoftd/320:26:513
25185992925,3cyclictest41-21ksoftirqd/320:55:123
25184992923,4cyclictest33-21ksoftirqd/223:02:202
25184992923,4cyclictest33-21ksoftirqd/219:55:092
25184992922,5cyclictest33-21ksoftirqd/200:39:202
25183992923,4cyclictest25-21ksoftirqd/122:08:111
25183992923,4cyclictest25-21ksoftirqd/121:51:261
25183992923,4cyclictest25-21ksoftirqd/121:51:261
25183992913,14cyclictest1303-21runrttasks23:42:261
2518399291,25cyclictest17647-21cpuspeed_turbos20:00:151
25182992924,3cyclictest9-21ksoftirqd/023:23:030
25182992924,3cyclictest9-21ksoftirqd/022:17:320
25182992924,3cyclictest9-21ksoftirqd/020:20:040
25182992924,3cyclictest9-21ksoftirqd/019:54:190
25182992923,4cyclictest9-21ksoftirqd/023:36:190
25182992923,4cyclictest9-21ksoftirqd/022:50:530
25182992923,4cyclictest9-21ksoftirqd/021:18:070
138491290,0ptp4l401ktimersoftd/320:06:463
25184992823,3cyclictest33-21ksoftirqd/222:58:062
25184992823,3cyclictest33-21ksoftirqd/221:34:082
25184992823,3cyclictest33-21ksoftirqd/220:25:012
25184992823,3cyclictest33-21ksoftirqd/219:50:502
25184992822,4cyclictest33-21ksoftirqd/221:01:002
25184992822,4cyclictest33-21ksoftirqd/200:25:032
25183992823,3cyclictest25-21ksoftirqd/123:39:541
25183992823,3cyclictest25-21ksoftirqd/119:43:511
25183992822,4cyclictest25-21ksoftirqd/120:24:321
2518399281,24cyclictest24746-21/usr/sbin/munin22:25:201
25183992812,14cyclictest24617-21apt-config00:35:011
25182992822,4cyclictest9-21ksoftirqd/020:55:560
25185992721,4cyclictest41-21ksoftirqd/322:49:413
25185992716,9cyclictest41-21ksoftirqd/300:36:473
25184992722,3cyclictest33-21ksoftirqd/223:26:272
25184992722,3cyclictest33-21ksoftirqd/221:28:582
25184992721,4cyclictest33-21ksoftirqd/219:10:152
25184992721,4cyclictest33-21ksoftirqd/219:10:152
2518399271,22cyclictest2315-21gnome-shell00:27:591
25183992710,14cyclictest13872-21proc_pri19:50:221
2518399270,24cyclictest32419-21/usr/sbin/munin21:35:281
25182992722,3cyclictest9-21ksoftirqd/023:40:100
25182992722,3cyclictest9-21ksoftirqd/023:19:350
25182992722,3cyclictest9-21ksoftirqd/020:30:100
25182992722,3cyclictest9-21ksoftirqd/020:06:160
25182992722,3cyclictest9-21ksoftirqd/000:10:370
25182992721,4cyclictest9-21ksoftirqd/023:47:020
138491270,0ptp4l401ktimersoftd/321:24:593
138491270,0ptp4l401ktimersoftd/321:24:593
25184992621,3cyclictest33-21ksoftirqd/223:56:052
25184992621,3cyclictest33-21ksoftirqd/222:44:082
2518399269,15cyclictest15090-21ls00:15:121
2518399268,16cyclictest17634-21expr22:10:141
2518399261,22cyclictest19998-21/usr/sbin/munin23:20:151
2518399260,23cyclictest0-21swapper/120:45:161
25182992621,3cyclictest9-21ksoftirqd/019:58:070
25182992620,4cyclictest9-21ksoftirqd/021:34:400
25183992519,4cyclictest25-21ksoftirqd/123:11:131
2518399250,22cyclictest12908-21/usr/sbin/munin22:00:161
25182992520,3cyclictest9-21ksoftirqd/023:31:360
25182992519,4cyclictest9-21ksoftirqd/021:14:500
138491250,8ptp4l401ktimersoftd/319:59:303
2518399240,21cyclictest25587-21df_abs19:10:121
2518399240,21cyclictest25587-21df_abs19:10:121
25182992418,4cyclictest9-21ksoftirqd/019:35:530
25182992418,4cyclictest9-21ksoftirqd/019:10:340
25182992418,4cyclictest9-21ksoftirqd/019:10:330
25184992318,3cyclictest33-21ksoftirqd/221:51:072
25184992318,3cyclictest33-21ksoftirqd/221:51:072
25184992115,4cyclictest33-21ksoftirqd/200:02:132
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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