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2026-05-06 - 03:15
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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 highest latencies:
System rackdslot3.osadl.org (updated Wed May 06, 2026 00:45:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
70232202169,22sleep20-21swapper/219:09:052
69962202169,22sleep00-21swapper/019:08:430
68202202169,22sleep30-21swapper/319:07:093
70172197162,23sleep10-21swapper/119:09:001
2433521700,5sleep1738799cyclictest00:10:251
62562650,6sleep1738799cyclictest22:25:271
139391630,0ptp4l401ktimersoftd/321:55:113
270542610,7sleep3738999cyclictest20:55:243
7388995713,15cyclictest20199-21/usr/sbin/munin00:05:152
137642570,2sleep00-21swapper/020:30:140
7386994842,3cyclictest4093-21cron22:25:000
139391450,1ptp4l0-21swapper/322:52:493
139391420,0ptp4l401ktimersoftd/319:25:233
738899410,3cyclictest12721-21taskset23:48:292
57898410,2rtkit-daemon0-21swapper/121:05:391
139391410,1ptp4l0-21swapper/319:47:153
139391410,1ptp4l0-21swapper/319:47:153
139391410,0ptp4l401ktimersoftd/322:15:293
7389994028,9cyclictest41-21ksoftirqd/323:12:493
7387994035,3cyclictest25-21ksoftirqd/121:39:591
139391400,0ptp4l401ktimersoftd/323:20:133
139391390,1ptp4l401ktimersoftd/323:35:273
139391390,0ptp4l401ktimersoftd/319:40:183
139391390,0ptp4l401ktimersoftd/319:15:223
139391390,0ptp4l401ktimersoftd/319:15:223
7387993834,2cyclictest25-21ksoftirqd/121:20:001
7387993833,3cyclictest25-21ksoftirqd/100:00:001
7387993832,4cyclictest25-21ksoftirqd/120:25:111
738799381,34cyclictest842-21cron23:25:001
7389993730,4cyclictest41-21ksoftirqd/320:05:133
7387993733,3cyclictest25-21ksoftirqd/123:35:001
7387993732,3cyclictest23779-21cron19:45:001
7387993731,4cyclictest25-21ksoftirqd/100:00:201
7386993716,18cyclictest20487-21phc2sys-jitter19:35:230
738699370,2cyclictest121rcu_preempt20:58:230
7388993630,4cyclictest33-21ksoftirqd/222:49:202
7388993630,4cyclictest33-21ksoftirqd/220:11:062
7388993630,4cyclictest33-21ksoftirqd/219:42:262
7388993629,5cyclictest33-21ksoftirqd/220:23:222
7387993631,3cyclictest25-21ksoftirqd/120:35:011
7387993631,3cyclictest25-21ksoftirqd/120:00:181
7387993631,3cyclictest25-21ksoftirqd/100:10:001
7387993630,4cyclictest25-21ksoftirqd/121:24:261
7387993630,4cyclictest25-21ksoftirqd/100:39:111
7387993630,4cyclictest25-21ksoftirqd/100:17:151
7387993629,5cyclictest25-21ksoftirqd/100:22:011
7386993615,18cyclictest31786-21iostat23:20:160
7386993610,23cyclictest449-21dbus-daemon22:40:010
7389993530,3cyclictest41-21ksoftirqd/320:30:113
7389993530,3cyclictest41-21ksoftirqd/300:00:003
7389993529,4cyclictest41-21ksoftirqd/322:58:363
738899352,30cyclictest21402-21latency_hist19:40:002
7387993531,2cyclictest25-21ksoftirqd/119:30:011
7387993531,2cyclictest25-21ksoftirqd/119:25:001
7387993530,3cyclictest25-21ksoftirqd/123:20:001
7387993530,3cyclictest25-21ksoftirqd/123:00:191
7387993530,3cyclictest25-21ksoftirqd/123:00:001
7387993530,3cyclictest25-21ksoftirqd/122:30:131
7387993529,4cyclictest25-21ksoftirqd/122:48:551
7387993529,4cyclictest25-21ksoftirqd/120:37:411
738699358,3cyclictest30257-21head23:15:270
7386993529,4cyclictest9-21ksoftirqd/020:08:150
7386993512,20cyclictest14464-21grep23:50:240
7386993511,21cyclictest4243-21cat00:35:250
7386993510,22cyclictest207-21systemd-journal21:55:260
7389993429,3cyclictest41-21ksoftirqd/300:30:113
7389993428,4cyclictest41-21ksoftirqd/323:25:313
7389993428,4cyclictest41-21ksoftirqd/323:18:373
7389993428,4cyclictest41-21ksoftirqd/323:07:223
7389993428,4cyclictest41-21ksoftirqd/320:24:593
738899343,2cyclictest121rcu_preempt00:18:392
7388993429,3cyclictest33-21ksoftirqd/222:19:512
7388993429,3cyclictest33-21ksoftirqd/219:27:282
7388993429,3cyclictest33-21ksoftirqd/219:20:112
7388993428,4cyclictest33-21ksoftirqd/221:54:512
7388993428,4cyclictest33-21ksoftirqd/219:19:272
7388993428,4cyclictest33-21ksoftirqd/219:19:272
7387993430,2cyclictest25-21ksoftirqd/120:49:591
7387993428,4cyclictest25-21ksoftirqd/122:02:051
7387993428,4cyclictest25-21ksoftirqd/121:57:561
7387993428,4cyclictest25-21ksoftirqd/121:33:401
7387993428,4cyclictest25-21ksoftirqd/119:38:561
7387993428,3cyclictest25-21ksoftirqd/120:20:191
7387993428,3cyclictest25-21ksoftirqd/119:50:001
7387993428,3cyclictest25-21ksoftirqd/119:50:001
7386993428,4cyclictest9-21ksoftirqd/021:17:150
7386993428,4cyclictest9-21ksoftirqd/020:21:540
7386993428,4cyclictest9-21ksoftirqd/020:14:210
7386993414,18cyclictest10651-21fw_packets21:30:150
7386993413,19cyclictest30879-21ptp4l-jitter22:10:230
139391340,0ptp4l401ktimersoftd/322:35:183
7389993327,4cyclictest41-21ksoftirqd/321:30:373
7389993327,4cyclictest41-21ksoftirqd/320:28:003
7389993327,4cyclictest41-21ksoftirqd/300:16:093
738899339,21cyclictest3128-21expr21:15:142
7388993328,3cyclictest33-21ksoftirqd/223:16:192
7388993328,3cyclictest33-21ksoftirqd/220:38:402
7388993327,4cyclictest33-21ksoftirqd/223:55:032
7388993327,4cyclictest33-21ksoftirqd/222:42:502
7388993327,4cyclictest33-21ksoftirqd/221:26:242
7388993327,4cyclictest33-21ksoftirqd/220:31:242
7388993327,4cyclictest33-21ksoftirqd/219:50:362
7388993327,4cyclictest33-21ksoftirqd/219:50:362
7388993327,3cyclictest33-21ksoftirqd/222:20:112
738899330,31cyclictest5669-21latency_hist23:35:012
7387993329,2cyclictest25-21ksoftirqd/123:10:011
7387993329,2cyclictest25-21ksoftirqd/120:50:131
7387993328,3cyclictest25-21ksoftirqd/123:06:431
7387993328,3cyclictest25-21ksoftirqd/122:20:181
7387993328,3cyclictest25-21ksoftirqd/120:55:531
7387993327,4cyclictest25-21ksoftirqd/122:18:141
7386993328,3cyclictest9-21ksoftirqd/021:23:410
7386993327,4cyclictest9-21ksoftirqd/023:55:490
7386993327,4cyclictest9-21ksoftirqd/023:10:030
7386993327,4cyclictest9-21ksoftirqd/023:03:130
7386993327,4cyclictest9-21ksoftirqd/022:42:120
7386993326,5cyclictest9-21ksoftirqd/021:04:400
7386993311,19cyclictest21065-21cat21:50:200
139391330,0ptp4l401ktimersoftd/319:10:213
7389993227,3cyclictest41-21ksoftirqd/321:00:183
7389993226,4cyclictest41-21ksoftirqd/323:44:283
7389993226,4cyclictest41-21ksoftirqd/322:01:193
7389993225,4cyclictest41-21ksoftirqd/319:20:243
7388993227,3cyclictest33-21ksoftirqd/221:23:052
7388993227,3cyclictest33-21ksoftirqd/220:02:342
7388993227,3cyclictest33-21ksoftirqd/219:30:042
7388993226,4cyclictest33-21ksoftirqd/222:50:362
7388993226,4cyclictest33-21ksoftirqd/221:59:492
7388993226,4cyclictest33-21ksoftirqd/220:09:382
7388993226,4cyclictest33-21ksoftirqd/200:36:262
7388993226,4cyclictest33-21ksoftirqd/200:22:552
7388993226,4cyclictest33-21ksoftirqd/200:10:032
7388993215,15cyclictest3298-21latency_hist23:30:012
7388993215,15cyclictest18823-21/usr/sbin/munin22:55:232
7387993227,3cyclictest25-21ksoftirqd/123:49:231
7387993227,3cyclictest25-21ksoftirqd/123:35:181
7387993227,3cyclictest25-21ksoftirqd/123:30:011
7387993227,3cyclictest25-21ksoftirqd/122:54:321
7387993227,3cyclictest25-21ksoftirqd/119:35:001
7387993227,2cyclictest25-21ksoftirqd/119:55:001
7387993227,2cyclictest25-21ksoftirqd/119:54:591
7387993226,4cyclictest25-21ksoftirqd/121:51:341
7387993226,4cyclictest25-21ksoftirqd/121:41:431
7387993226,4cyclictest25-21ksoftirqd/119:59:101
7387993226,4cyclictest25-21ksoftirqd/100:27:101
7387993226,3cyclictest25-21ksoftirqd/120:20:011
7387993226,3cyclictest25-21ksoftirqd/119:15:191
7387993226,3cyclictest25-21ksoftirqd/119:15:191
7387993225,4cyclictest25-21ksoftirqd/120:11:531
7387993225,4cyclictest1164-21irqrtprio21:10:171
738699329,3cyclictest29195-21expr19:55:130
738699329,3cyclictest11322-21df_abs20:25:140
738699322,7cyclictest16911-21apt-get19:30:140
7386993227,3cyclictest9-21ksoftirqd/021:25:110
7386993227,3cyclictest9-21ksoftirqd/021:14:500
7386993227,3cyclictest9-21ksoftirqd/000:21:120
7386993227,3cyclictest9-21ksoftirqd/000:03:370
7386993226,4cyclictest9-21ksoftirqd/023:43:130
7386993226,4cyclictest9-21ksoftirqd/023:29:080
7386993226,4cyclictest9-21ksoftirqd/000:31:550
7386993211,19cyclictest12781-21expr21:35:150
7386993211,18cyclictest31690-21df_abs20:00:140
7386993210,3cyclictest18539-21sed21:45:220
7386993210,19cyclictest18411-21cat20:40:010
139391320,0ptp4l401ktimersoftd/321:43:323
7389993126,3cyclictest41-21ksoftirqd/320:46:363
7389993125,4cyclictest41-21ksoftirqd/323:49:213
7389993125,4cyclictest41-21ksoftirqd/323:03:573
7389993125,4cyclictest41-21ksoftirqd/322:28:263
7389993125,4cyclictest41-21ksoftirqd/321:22:123
7389993125,4cyclictest41-21ksoftirqd/319:55:313
7389993125,4cyclictest41-21ksoftirqd/300:10:473
738899319,19cyclictest30273-21sed00:25:142
738899318,20cyclictest27443-21processes23:10:232
7388993127,2cyclictest33-21ksoftirqd/220:41:142
7388993126,3cyclictest33-21ksoftirqd/223:00:302
7388993125,4cyclictest33-21ksoftirqd/221:48:342
7388993125,4cyclictest33-21ksoftirqd/221:12:512
7388993125,4cyclictest33-21ksoftirqd/219:46:372
7388993125,4cyclictest33-21ksoftirqd/219:46:372
7388993112,16cyclictest8273-21sed19:10:192
7388993112,16cyclictest28843-21seq21:00:182
738899310,4cyclictest13148-21grep20:30:012
7387993127,3cyclictest25-21ksoftirqd/123:50:181
7387993126,3cyclictest25-21ksoftirqd/119:15:001
7387993125,4cyclictest25-21ksoftirqd/122:09:351
7387993125,4cyclictest25-21ksoftirqd/120:40:341
7387993124,4cyclictest25-21ksoftirqd/120:09:371
738699317,4cyclictest6779-21irqrtprio20:15:170
7386993126,3cyclictest9-21ksoftirqd/020:40:040
7386993126,3cyclictest9-21ksoftirqd/019:24:400
7386993125,4cyclictest9-21ksoftirqd/022:48:540
7386993125,4cyclictest9-21ksoftirqd/022:16:400
7386993125,4cyclictest9-21ksoftirqd/022:08:530
7386993125,4cyclictest9-21ksoftirqd/019:50:300
7386993125,4cyclictest9-21ksoftirqd/019:50:300
7386993125,4cyclictest9-21ksoftirqd/019:18:580
7386993125,4cyclictest9-21ksoftirqd/019:18:580
7386993125,4cyclictest9-21ksoftirqd/000:06:520
738699311,10cyclictest21730-21grep20:45:190
139391310,0ptp4l401ktimersoftd/300:35:173
139391310,0ptp4l401ktimersoftd/300:26:353
7389993025,3cyclictest41-21ksoftirqd/322:30:523
7389993025,3cyclictest41-21ksoftirqd/321:54:373
7389993025,3cyclictest41-21ksoftirqd/321:25:113
7389993025,3cyclictest41-21ksoftirqd/320:10:313
7389993024,4cyclictest41-21ksoftirqd/323:33:013
7388993025,3cyclictest33-21ksoftirqd/222:39:132
7388993025,3cyclictest33-21ksoftirqd/222:25:452
7388993025,3cyclictest33-21ksoftirqd/222:08:592
7388993025,3cyclictest33-21ksoftirqd/219:56:262
738899302,26cyclictest23126-21kworker/2:023:08:402
738899302,26cyclictest18503-21kworker/2:121:31:092
738899300,4cyclictest2577-21cut00:35:002
738899300,3cyclictest27095-21wc22:05:002
7387993025,3cyclictest25-21ksoftirqd/122:37:581
7387993024,4cyclictest25-21ksoftirqd/123:40:051
7387993024,4cyclictest25-21ksoftirqd/121:00:151
738699307,3cyclictest5513-21cat22:25:210
738699306,4cyclictest0-21swapper/000:25:280
738699305,5cyclictest14707-21cpuspeed_turbos19:25:130
738699305,4cyclictest25110-21unixbench_multi20:50:270
738699304,5cyclictest0-21swapper/021:40:140
7386993025,3cyclictest9-21ksoftirqd/022:58:440
7386993025,3cyclictest9-21ksoftirqd/022:04:540
7386993025,3cyclictest9-21ksoftirqd/000:16:230
7386993024,4cyclictest9-21ksoftirqd/023:38:120
139391300,9ptp4l401ktimersoftd/321:45:463
139391300,0ptp4l401ktimersoftd/320:50:223
139391300,0ptp4l401ktimersoftd/320:01:053
7389992926,1cyclictest139391ptp4l22:08:243
7389992924,3cyclictest41-21ksoftirqd/321:10:583
738899297,20cyclictest22122-21sed20:45:212
7388992924,3cyclictest33-21ksoftirqd/223:40:232
7388992924,3cyclictest33-21ksoftirqd/223:20:462
7388992924,3cyclictest33-21ksoftirqd/221:41:232
7388992923,4cyclictest33-21ksoftirqd/200:03:292
738899291,25cyclictest30555-21/usr/sbin/munin21:05:242
738899291,18cyclictest1833-21kworker/2:223:35:132
738899290,4cyclictest8374-21systemctl22:30:252
7387992924,3cyclictest25-21ksoftirqd/122:14:301
7387992923,4cyclictest25-21ksoftirqd/121:46:331
738699297,3cyclictest16981-21smartctl22:50:170
738699296,3cyclictest23437-21irqrtprio00:10:190
738699296,3cyclictest10788-21sort23:45:150
7386992924,3cyclictest9-21ksoftirqd/023:08:500
7386992924,3cyclictest9-21ksoftirqd/019:45:110
7386992924,3cyclictest9-21ksoftirqd/019:45:110
7386992923,4cyclictest9-21ksoftirqd/021:08:090
7386992923,4cyclictest9-21ksoftirqd/019:12:350
7386992923,3cyclictest9-21ksoftirqd/022:30:200
139391290,0ptp4l401ktimersoftd/322:22:013
139391290,0ptp4l401ktimersoftd/320:41:323
139391290,0ptp4l401ktimersoftd/319:51:133
139391290,0ptp4l401ktimersoftd/319:51:133
139391290,0ptp4l401ktimersoftd/300:07:343
139391290,0ptp4l401ktimersoftd/300:04:203
7389992823,3cyclictest41-21ksoftirqd/322:42:493
7389992823,3cyclictest41-21ksoftirqd/320:19:213
7389992822,3cyclictest139391ptp4l23:54:183
738899287,19cyclictest18503-21kworker/2:120:56:252
7388992823,3cyclictest33-21ksoftirqd/220:50:052
7387992823,3cyclictest25-21ksoftirqd/122:45:011
7387992822,4cyclictest25-21ksoftirqd/100:32:131
7386992822,4cyclictest9-21ksoftirqd/019:40:470
139391280,0ptp4l401ktimersoftd/300:20:003
7389992722,3cyclictest41-21ksoftirqd/322:10:493
7389992722,3cyclictest41-21ksoftirqd/321:05:123
738899275,20cyclictest1833-21kworker/2:223:54:332
7388992722,3cyclictest33-21ksoftirqd/221:36:342
7388992722,3cyclictest33-21ksoftirqd/220:15:402
139391270,0ptp4l401ktimersoftd/321:36:283
7389992622,3cyclictest41-21ksoftirqd/321:16:373
7389992620,4cyclictest41-21ksoftirqd/320:37:513
7389992620,4cyclictest41-21ksoftirqd/319:37:593
738899268,16cyclictest29874-21df_abs22:10:142
7386992620,4cyclictest9-21ksoftirqd/023:34:070
7389992520,3cyclictest41-21ksoftirqd/322:47:123
7387992419,3cyclictest25-21ksoftirqd/121:25:111
139391230,0ptp4l401ktimersoftd/319:30:163
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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