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2026-08-12 - 05:08
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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 rackdslot4.osadl.org (updated Wed Aug 12, 2026 00:45:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1213522670,5sleep012130-21od19:07:460
2314722440,26sleep10-21swapper/119:09:001
2307422340,4sleep323086-21sh19:09:393
896122210,7sleep28958-21rm19:06:392
2429521490,2sleep10-21swapper/122:45:221
142282680,2sleep30-21swapper/319:11:023
138491650,1ptp4l401ktimersoftd/323:00:173
73022600,5sleep09-21ksoftirqd/021:05:360
4483995913,9cyclictest33-21ksoftirqd/221:25:212
4483995819,9cyclictest33-21ksoftirqd/219:10:552
4483995713,9cyclictest33-21ksoftirqd/223:45:292
65842540,2sleep00-21swapper/019:12:230
138491540,1ptp4l401ktimersoftd/320:41:023
138491540,1ptp4l401ktimersoftd/320:41:023
4483995328,5cyclictest33-21ksoftirqd/223:50:192
161192520,2sleep10-21swapper/122:30:181
138491520,1ptp4l391rcuc/322:15:303
4483994717,8cyclictest33-21ksoftirqd/222:20:222
4483994711,7cyclictest33-21ksoftirqd/223:30:242
4483994617,8cyclictest33-21ksoftirqd/221:55:012
4483994515,9cyclictest33-21ksoftirqd/223:55:202
4483994515,3cyclictest33-21ksoftirqd/220:50:222
4483994514,9cyclictest33-21ksoftirqd/222:15:242
4482994516,3cyclictest25-21ksoftirqd/119:10:151
138491450,0ptp4l401ktimersoftd/323:51:463
4483994414,6cyclictest33-21ksoftirqd/200:30:222
4483994413,5cyclictest33-21ksoftirqd/223:30:002
4482994429,5cyclictest25-21ksoftirqd/100:29:031
138491440,0ptp4l401ktimersoftd/321:53:243
448399439,6cyclictest33-21ksoftirqd/200:35:272
4483994337,3cyclictest33-21ksoftirqd/200:10:002
4483994317,3cyclictest33-21ksoftirqd/200:05:002
4483994314,7cyclictest33-21ksoftirqd/220:00:202
448399430,2cyclictest121rcu_preempt22:10:242
4483994219,5cyclictest33-21ksoftirqd/222:50:202
4483994215,6cyclictest33-21ksoftirqd/222:05:162
4483994213,7cyclictest33-21ksoftirqd/223:00:142
4482994237,3cyclictest25-21ksoftirqd/119:40:001
138491420,0ptp4l401ktimersoftd/323:30:293
138491420,0ptp4l401ktimersoftd/322:00:173
138491420,0ptp4l401ktimersoftd/319:54:243
138491420,0ptp4l401ktimersoftd/300:19:053
448399415,7cyclictest33-21ksoftirqd/200:15:002
4483994135,3cyclictest33-21ksoftirqd/222:30:002
4483994112,6cyclictest33-21ksoftirqd/221:00:192
4483994111,3cyclictest33-21ksoftirqd/223:05:222
4483994110,7cyclictest33-21ksoftirqd/200:25:272
4482994135,3cyclictest25-21ksoftirqd/119:50:011
448399405,4cyclictest33-21ksoftirqd/219:15:182
4483994035,3cyclictest33-21ksoftirqd/219:25:142
448399401,6cyclictest33-21ksoftirqd/223:40:152
448399401,3cyclictest121rcu_preempt19:55:002
4483994012,7cyclictest33-21ksoftirqd/200:20:142
448399400,2cyclictest121rcu_preempt22:00:172
4482994033,4cyclictest25-21ksoftirqd/120:50:001
448399399,3cyclictest33-21ksoftirqd/220:15:222
4483993924,12cyclictest33-21ksoftirqd/220:29:592
448399391,4cyclictest33-21ksoftirqd/219:45:242
448399391,3cyclictest121rcu_preempt20:30:202
448399390,5cyclictest121rcu_preempt20:40:112
448399390,5cyclictest121rcu_preempt20:40:112
448299398,4cyclictest25-21ksoftirqd/123:35:191
4484993834,3cyclictest41-21ksoftirqd/321:34:593
4484993825,11cyclictest41-21ksoftirqd/321:40:013
448399389,3cyclictest33-21ksoftirqd/221:57:082
448399387,4cyclictest33-21ksoftirqd/220:25:002
448399386,9cyclictest33-21ksoftirqd/222:30:282
448399385,5cyclictest33-21ksoftirqd/223:15:002
448399384,4cyclictest33-21ksoftirqd/223:20:242
448399383,5cyclictest33-21ksoftirqd/222:35:252
448399383,5cyclictest33-21ksoftirqd/221:20:012
4483993834,3cyclictest33-21ksoftirqd/220:10:002
4483993833,3cyclictest33-21ksoftirqd/221:25:002
4483993833,3cyclictest33-21ksoftirqd/221:10:142
4483993833,3cyclictest33-21ksoftirqd/219:55:202
4483993833,3cyclictest33-21ksoftirqd/219:40:002
4482993833,3cyclictest25-21ksoftirqd/120:00:001
4482993833,3cyclictest25-21ksoftirqd/119:25:001
4482993833,2cyclictest25-21ksoftirqd/120:20:001
448299380,6cyclictest6374-21irqrtprio21:05:201
4484993733,2cyclictest41-21ksoftirqd/321:30:003
4484993732,3cyclictest41-21ksoftirqd/323:00:003
4484993731,4cyclictest41-21ksoftirqd/323:12:323
4484993731,3cyclictest41-21ksoftirqd/321:05:153
448399374,2cyclictest121rcu_preempt19:30:212
448399373,4cyclictest33-21ksoftirqd/221:40:162
4483993732,3cyclictest33-21ksoftirqd/221:45:232
4483993732,3cyclictest33-21ksoftirqd/220:55:282
4483993731,3cyclictest33-21ksoftirqd/221:10:002
4483993730,4cyclictest33-21ksoftirqd/220:36:592
448399371,6cyclictest33-21ksoftirqd/219:20:252
448399371,5cyclictest33-21ksoftirqd/222:55:132
448399370,7cyclictest33-21ksoftirqd/222:40:172
448299375,2cyclictest121rcu_preempt20:50:251
4482993733,2cyclictest25-21ksoftirqd/122:55:001
448299373,2cyclictest121rcu_preempt23:05:241
4482993732,3cyclictest25-21ksoftirqd/119:40:221
4482993731,3cyclictest25-21ksoftirqd/121:00:001
138491370,1ptp4l401ktimersoftd/320:59:243
138491370,0ptp4l401ktimersoftd/322:10:263
4484993631,3cyclictest41-21ksoftirqd/322:54:523
4484993631,3cyclictest41-21ksoftirqd/300:40:003
4484993630,4cyclictest41-21ksoftirqd/321:12:333
4484993630,4cyclictest41-21ksoftirqd/300:14:103
4484993630,3cyclictest41-21ksoftirqd/322:30:133
4484993616,17cyclictest41-21ksoftirqd/300:10:003
448399366,5cyclictest33-21ksoftirqd/200:15:192
4483993631,3cyclictest33-21ksoftirqd/221:35:162
4483993630,4cyclictest33-21ksoftirqd/221:32:262
4483993630,3cyclictest33-21ksoftirqd/223:15:262
4483993630,3cyclictest33-21ksoftirqd/223:15:262
4483993629,4cyclictest33-21ksoftirqd/223:40:002
4483993623,3cyclictest33-21ksoftirqd/222:45:222
448299364,5cyclictest121rcu_preempt20:30:251
448299363,2cyclictest121rcu_preempt21:55:241
4482993631,3cyclictest25-21ksoftirqd/123:20:001
4482993631,3cyclictest25-21ksoftirqd/123:20:001
4482993631,3cyclictest25-21ksoftirqd/122:20:011
4482993631,3cyclictest25-21ksoftirqd/121:20:001
4482993630,4cyclictest25-21ksoftirqd/121:52:431
4482993630,4cyclictest25-21ksoftirqd/121:47:301
4482993630,4cyclictest25-21ksoftirqd/121:34:591
4482993630,4cyclictest25-21ksoftirqd/120:24:101
4482993630,4cyclictest25-21ksoftirqd/120:00:101
4482993630,3cyclictest25-21ksoftirqd/122:30:011
4482993630,3cyclictest25-21ksoftirqd/122:05:001
4482993629,4cyclictest25-21ksoftirqd/120:13:061
4478993630,4cyclictest9-21ksoftirqd/023:47:440
4478993630,4cyclictest9-21ksoftirqd/023:20:320
4478993630,4cyclictest9-21ksoftirqd/020:57:060
4478993630,4cyclictest9-21ksoftirqd/020:51:160
4478993630,4cyclictest9-21ksoftirqd/020:39:220
448499353,3cyclictest121rcu_preempt00:05:003
4484993530,3cyclictest41-21ksoftirqd/321:20:003
4484993529,4cyclictest41-21ksoftirqd/321:03:473
4484993529,4cyclictest41-21ksoftirqd/320:52:413
4484993529,4cyclictest41-21ksoftirqd/320:47:423
4484993529,4cyclictest41-21ksoftirqd/320:32:383
4484993527,5cyclictest41-21ksoftirqd/320:11:003
4484993524,3cyclictest41-21ksoftirqd/300:25:203
4483993530,3cyclictest33-21ksoftirqd/220:45:142
4483993529,3cyclictest33-21ksoftirqd/219:40:132
448299355,10cyclictest25-21ksoftirqd/122:05:181
4482993531,3cyclictest25-21ksoftirqd/121:45:001
4482993531,3cyclictest25-21ksoftirqd/121:15:001
4482993531,3cyclictest25-21ksoftirqd/100:00:001
4482993531,2cyclictest25-21ksoftirqd/123:30:001
4482993530,3cyclictest25-21ksoftirqd/122:55:181
4482993530,3cyclictest25-21ksoftirqd/121:40:011
4482993530,3cyclictest25-21ksoftirqd/121:30:011
4482993530,3cyclictest25-21ksoftirqd/100:10:181
4482993529,4cyclictest25-21ksoftirqd/123:50:291
4482993529,4cyclictest25-21ksoftirqd/120:39:301
4482993528,4cyclictest25-21ksoftirqd/119:34:401
448299351,9cyclictest25-21ksoftirqd/120:25:161
4478993530,3cyclictest9-21ksoftirqd/021:20:010
4478993529,4cyclictest9-21ksoftirqd/023:18:070
4478993529,4cyclictest9-21ksoftirqd/023:18:070
4478993529,4cyclictest9-21ksoftirqd/019:38:510
4478993529,4cyclictest9-21ksoftirqd/000:16:480
4484993430,3cyclictest41-21ksoftirqd/319:30:293
4484993429,3cyclictest41-21ksoftirqd/323:23:243
4484993429,3cyclictest41-21ksoftirqd/322:45:003
4484993429,3cyclictest41-21ksoftirqd/321:20:213
4484993429,3cyclictest41-21ksoftirqd/319:35:133
4484993428,4cyclictest41-21ksoftirqd/323:07:233
4484993428,4cyclictest41-21ksoftirqd/322:08:503
4484993428,4cyclictest41-21ksoftirqd/319:25:003
4484993427,5cyclictest41-21ksoftirqd/323:57:253
448499342,3cyclictest41-21ksoftirqd/321:40:183
4483993428,3cyclictest33-21ksoftirqd/220:10:172
448299345,2cyclictest121rcu_preempt21:20:161
448299344,3cyclictest25-21ksoftirqd/122:10:121
448299344,3cyclictest25-21ksoftirqd/100:00:251
448299343,4cyclictest25-21ksoftirqd/119:15:261
4482993430,2cyclictest25-21ksoftirqd/122:35:141
4482993429,3cyclictest25-21ksoftirqd/123:45:011
4482993429,3cyclictest25-21ksoftirqd/123:30:131
4482993429,3cyclictest25-21ksoftirqd/100:35:251
4482993429,3cyclictest25-21ksoftirqd/100:20:191
4482993429,2cyclictest25-21ksoftirqd/122:40:171
4482993428,4cyclictest25-21ksoftirqd/123:12:301
4482993428,4cyclictest25-21ksoftirqd/119:27:571
4482993427,5cyclictest25-21ksoftirqd/100:18:261
4478993429,3cyclictest9-21ksoftirqd/023:11:110
4478993428,4cyclictest9-21ksoftirqd/022:58:370
4478993428,4cyclictest9-21ksoftirqd/022:06:380
4478993428,4cyclictest9-21ksoftirqd/021:58:250
4478993428,4cyclictest9-21ksoftirqd/020:03:590
4478993428,4cyclictest9-21ksoftirqd/000:04:330
4478993428,3cyclictest9-21ksoftirqd/022:36:590
138491340,0ptp4l401ktimersoftd/300:20:123
4484993329,2cyclictest41-21ksoftirqd/322:45:173
4484993328,3cyclictest41-21ksoftirqd/322:35:353
4484993328,3cyclictest41-21ksoftirqd/300:35:003
4484993327,4cyclictest41-21ksoftirqd/323:44:223
4484993327,4cyclictest41-21ksoftirqd/322:29:523
4484993327,3cyclictest41-21ksoftirqd/323:35:193
448299337,2cyclictest25-21ksoftirqd/121:00:171
4482993329,3cyclictest25-21ksoftirqd/123:50:011
4482993328,3cyclictest25-21ksoftirqd/100:35:001
4482993327,4cyclictest25-21ksoftirqd/123:04:241
448299330,3cyclictest25-21ksoftirqd/119:50:251
4478993328,3cyclictest9-21ksoftirqd/023:35:120
4478993328,3cyclictest9-21ksoftirqd/019:34:440
4478993328,3cyclictest9-21ksoftirqd/019:19:530
4478993327,4cyclictest9-21ksoftirqd/023:51:290
4478993327,4cyclictest9-21ksoftirqd/023:01:140
4478993327,4cyclictest9-21ksoftirqd/022:17:010
4478993327,4cyclictest9-21ksoftirqd/021:52:180
4478993327,4cyclictest9-21ksoftirqd/021:41:590
4478993327,4cyclictest9-21ksoftirqd/020:42:390
4478993327,4cyclictest9-21ksoftirqd/020:42:380
4478993327,4cyclictest9-21ksoftirqd/020:07:040
4484993228,3cyclictest41-21ksoftirqd/319:25:143
4484993227,3cyclictest41-21ksoftirqd/323:45:063
4484993227,3cyclictest41-21ksoftirqd/320:25:143
4484993227,3cyclictest41-21ksoftirqd/320:24:593
4484993227,2cyclictest41-21ksoftirqd/320:15:203
448499320,4cyclictest15387-21/usr/sbin/munin19:15:153
4482993228,2cyclictest25-21ksoftirqd/120:45:001
4482993228,2cyclictest25-21ksoftirqd/120:45:001
4482993226,4cyclictest25-21ksoftirqd/120:07:001
448299321,5cyclictest25-21ksoftirqd/100:05:171
4478993227,3cyclictest9-21ksoftirqd/022:01:170
4478993227,3cyclictest9-21ksoftirqd/021:02:390
4478993226,4cyclictest9-21ksoftirqd/023:08:520
4478993226,4cyclictest9-21ksoftirqd/021:29:150
4478993226,4cyclictest9-21ksoftirqd/021:11:020
4478993226,4cyclictest9-21ksoftirqd/019:29:290
4478993226,4cyclictest9-21ksoftirqd/000:36:500
4478993226,4cyclictest9-21ksoftirqd/000:25:510
4478993226,3cyclictest9-21ksoftirqd/023:40:130
4478993226,3cyclictest9-21ksoftirqd/023:25:410
4478993225,4cyclictest9-21ksoftirqd/020:46:270
4484993126,3cyclictest41-21ksoftirqd/322:24:413
4484993126,3cyclictest41-21ksoftirqd/321:55:193
4484993126,3cyclictest41-21ksoftirqd/320:38:563
4484993125,4cyclictest41-21ksoftirqd/319:55:513
448299310,2cyclictest25-21ksoftirqd/123:20:221
4478993126,3cyclictest9-21ksoftirqd/021:34:330
4478993126,3cyclictest9-21ksoftirqd/020:10:140
4478993126,3cyclictest9-21ksoftirqd/000:06:300
4478993125,4cyclictest9-21ksoftirqd/022:24:390
4478993125,4cyclictest9-21ksoftirqd/021:49:330
4478993125,4cyclictest9-21ksoftirqd/019:58:090
4478993125,4cyclictest9-21ksoftirqd/000:23:260
4478993124,4cyclictest9-21ksoftirqd/021:23:270
4484993025,3cyclictest41-21ksoftirqd/323:17:563
4484993025,3cyclictest41-21ksoftirqd/323:17:563
4478993025,3cyclictest9-21ksoftirqd/022:31:090
4478993025,3cyclictest9-21ksoftirqd/021:35:110
4478993025,3cyclictest9-21ksoftirqd/020:16:060
138491300,0ptp4l401ktimersoftd/320:06:573
4484992924,3cyclictest41-21ksoftirqd/319:47:353
4484992923,4cyclictest41-21ksoftirqd/321:46:033
448499290,2cyclictest121rcu_preempt19:40:133
4482992924,3cyclictest25-21ksoftirqd/122:20:191
4478992924,3cyclictest9-21ksoftirqd/020:25:010
4478992923,4cyclictest9-21ksoftirqd/022:46:540
4478992923,4cyclictest9-21ksoftirqd/022:26:560
4478992922,4cyclictest9-21ksoftirqd/019:45:050
448499286,2cyclictest121rcu_preempt23:25:253
4484992822,4cyclictest41-21ksoftirqd/320:00:043
4478992823,3cyclictest9-21ksoftirqd/023:59:030
4478992823,3cyclictest9-21ksoftirqd/020:34:540
4478992823,3cyclictest9-21ksoftirqd/020:21:210
4478992822,4cyclictest9-21ksoftirqd/019:20:190
4478992723,2cyclictest9-21ksoftirqd/022:10:350
4478992722,3cyclictest9-21ksoftirqd/022:51:070
4478992722,3cyclictest9-21ksoftirqd/019:50:260
4478992722,3cyclictest9-21ksoftirqd/000:32:550
4478992722,3cyclictest9-21ksoftirqd/000:10:460
4478992621,3cyclictest9-21ksoftirqd/023:31:110
4478992621,3cyclictest9-21ksoftirqd/022:41:350
4478992621,3cyclictest9-21ksoftirqd/019:43:200
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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