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2026-08-24 - 06:20
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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 Mon Aug 24, 2026 00:45:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
986124440,3sleep1241ktimersoftd/119:05:261
103522238193,34sleep30-21swapper/319:07:593
104432202169,22sleep20-21swapper/219:09:102
83742201167,23sleep00-21swapper/019:05:060
1394918363,11phc2sys0-21swapper/319:10:023
1050928262,11sleep00-21swapper/019:10:000
1080099694,9cyclictest9-21ksoftirqd/020:10:000
10800996732,4cyclictest9-21ksoftirqd/000:05:000
10800996426,10cyclictest9-21ksoftirqd/022:20:250
10800995926,4cyclictest9-21ksoftirqd/023:05:240
1080099586,8cyclictest9-21ksoftirqd/023:00:000
10800995827,4cyclictest9-21ksoftirqd/023:15:000
10800995825,5cyclictest9-21ksoftirqd/020:50:010
10800995824,4cyclictest9-21ksoftirqd/019:45:010
10801995754,2cyclictest231rcuc/122:46:571
10801995753,3cyclictest231rcuc/122:24:021
1080199571,8cyclictest207-21systemd-journal19:35:001
10800995726,4cyclictest9-21ksoftirqd/023:20:180
139391560,1ptp4l401ktimersoftd/321:32:033
10800995627,7cyclictest9-21ksoftirqd/000:30:010
10800995627,7cyclictest9-21ksoftirqd/000:30:010
10800995626,4cyclictest9-21ksoftirqd/021:50:000
10800995624,8cyclictest9-21ksoftirqd/022:30:180
10800995622,4cyclictest9-21ksoftirqd/021:30:140
10800995622,4cyclictest9-21ksoftirqd/000:10:240
10800995617,9cyclictest9-21ksoftirqd/021:50:230
10800995528,4cyclictest9-21ksoftirqd/023:15:130
10801995415,4cyclictest25-21ksoftirqd/123:15:491
10800995424,4cyclictest9-21ksoftirqd/000:20:150
10800995424,10cyclictest9-21ksoftirqd/023:25:140
10800995424,10cyclictest9-21ksoftirqd/023:25:140
10800995423,4cyclictest9-21ksoftirqd/000:30:160
10800995422,4cyclictest9-21ksoftirqd/021:05:240
1080099532,7cyclictest9-21ksoftirqd/022:00:120
10800995327,8cyclictest9-21ksoftirqd/021:20:230
1080099530,7cyclictest14569-21sort20:25:000
10801995248,2cyclictest231rcuc/121:05:061
10801995248,2cyclictest231rcuc/100:09:431
1080099525,7cyclictest9-21ksoftirqd/022:45:250
10800995240,3cyclictest9-21ksoftirqd/000:00:010
10800995240,3cyclictest9-21ksoftirqd/000:00:000
10800995229,9cyclictest9-21ksoftirqd/019:30:130
10800995228,3cyclictest9-21ksoftirqd/019:52:590
10800995226,4cyclictest9-21ksoftirqd/023:45:160
10800995222,8cyclictest9-21ksoftirqd/019:15:130
139391510,1ptp4l401ktimersoftd/322:33:053
1080199512,6cyclictest25-21ksoftirqd/123:35:001
1080099514,9cyclictest10799-21cyclictest23:40:010
1080099513,8cyclictest549-21in:imuxsock22:45:000
1080099513,7cyclictest9-21ksoftirqd/019:50:010
213732500,4sleep20-21swapper/219:30:202
10801995016,6cyclictest25-21ksoftirqd/120:27:331
10801995014,6cyclictest25-21ksoftirqd/122:53:561
1080099503,10cyclictest9-21ksoftirqd/019:20:010
10800995015,10cyclictest9-21ksoftirqd/000:10:000
1080099500,8cyclictest9-21ksoftirqd/022:20:010
10801994946,2cyclictest231rcuc/119:45:151
1080199493,7cyclictest241ktimersoftd/120:45:251
1080099495,9cyclictest9-21ksoftirqd/021:05:010
1080099495,9cyclictest9-21ksoftirqd/021:05:010
10800994935,2cyclictest9-21ksoftirqd/020:55:160
1080099492,8cyclictest9-21ksoftirqd/021:40:250
1080099490,9cyclictest9-21ksoftirqd/023:40:210
107612490,3sleep310683-21latency_hist23:40:003
1080199486,5cyclictest25-21ksoftirqd/120:41:591
1080199480,5cyclictest241ktimersoftd/120:15:281
1080099486,3cyclictest9-21ksoftirqd/020:50:150
1080099485,4cyclictest9-21ksoftirqd/021:10:180
1080099485,10cyclictest9-21ksoftirqd/020:10:220
1080099483,5cyclictest9-21ksoftirqd/020:35:260
10800994834,4cyclictest9-21ksoftirqd/020:15:280
1080099481,8cyclictest9-21ksoftirqd/020:25:140
1080199476,5cyclictest25-21ksoftirqd/120:20:141
1080199475,6cyclictest25-21ksoftirqd/120:05:271
1080199473,6cyclictest241ktimersoftd/123:35:191
1080199473,5cyclictest241ktimersoftd/121:20:151
1080199472,7cyclictest241ktimersoftd/100:28:371
1080199472,7cyclictest241ktimersoftd/100:28:361
10801994713,4cyclictest25-21ksoftirqd/122:41:511
1080199470,7cyclictest241ktimersoftd/119:20:191
1080099474,9cyclictest9-21ksoftirqd/020:00:120
1080099474,8cyclictest121rcu_preempt20:30:160
1080099474,2cyclictest9-21ksoftirqd/022:35:160
10800994732,4cyclictest9-21ksoftirqd/022:10:180
10800994730,7cyclictest9-21ksoftirqd/022:50:100
1080099472,10cyclictest9-21ksoftirqd/019:25:220
10800994714,7cyclictest9-21ksoftirqd/022:25:160
1080099470,8cyclictest9-21ksoftirqd/000:40:000
1080199462,7cyclictest25-21ksoftirqd/100:10:201
1080199461,7cyclictest241ktimersoftd/100:30:121
1080199460,7cyclictest241ktimersoftd/122:10:181
1080199460,5cyclictest241ktimersoftd/119:35:201
1080199460,5cyclictest241ktimersoftd/119:35:201
1080199460,43cyclictest241ktimersoftd/121:34:591
1080099465,4cyclictest9-21ksoftirqd/023:30:300
1080099464,7cyclictest9-21ksoftirqd/023:50:270
1080099464,7cyclictest9-21ksoftirqd/021:55:190
1080099463,9cyclictest9-21ksoftirqd/021:15:140
1080099463,4cyclictest9-21ksoftirqd/022:05:190
1080199456,6cyclictest25-21ksoftirqd/121:40:241
1080199453,5cyclictest25-21ksoftirqd/122:05:211
1080199452,6cyclictest25-21ksoftirqd/121:55:251
1080199452,6cyclictest241ktimersoftd/123:45:211
1080199450,5cyclictest241ktimersoftd/122:15:161
1080099453,9cyclictest9-21ksoftirqd/023:00:150
1080099453,4cyclictest9-21ksoftirqd/021:25:150
1080099451,7cyclictest9-21ksoftirqd/020:40:170
139391440,0ptp4l401ktimersoftd/321:24:553
123462440,31sleep233-21ksoftirqd/222:35:132
1080199443,6cyclictest241ktimersoftd/123:57:281
1080199443,6cyclictest241ktimersoftd/123:57:281
1080199443,6cyclictest241ktimersoftd/123:44:591
1080199443,5cyclictest241ktimersoftd/122:00:261
1080199443,5cyclictest241ktimersoftd/119:10:261
1080199442,5cyclictest25-21ksoftirqd/123:05:011
1080199442,5cyclictest25-21ksoftirqd/100:40:011
1080199442,5cyclictest241ktimersoftd/100:15:241
1080099442,9cyclictest9-21ksoftirqd/021:35:190
10800994428,7cyclictest9-21ksoftirqd/019:35:170
10800994428,7cyclictest9-21ksoftirqd/019:35:170
139391430,1ptp4l401ktimersoftd/300:26:153
139391430,1ptp4l401ktimersoftd/300:26:143
139391430,0ptp4l401ktimersoftd/300:15:433
1080199439,3cyclictest25-21ksoftirqd/119:53:591
1080199433,7cyclictest241ktimersoftd/121:00:161
1080199433,7cyclictest241ktimersoftd/121:00:161
1080199433,5cyclictest25-21ksoftirqd/123:25:161
1080199433,5cyclictest25-21ksoftirqd/123:25:161
10801994328,7cyclictest25-21ksoftirqd/120:30:111
1080199432,6cyclictest241ktimersoftd/119:40:271
1080199430,7cyclictest82242chrt21:16:011
1080099432,7cyclictest9-21ksoftirqd/000:20:010
1080199428,3cyclictest25-21ksoftirqd/121:10:421
10801994238,2cyclictest231rcuc/121:50:231
10801994238,2cyclictest231rcuc/100:20:241
1080199423,5cyclictest241ktimersoftd/120:35:181
1080199422,6cyclictest25-21ksoftirqd/121:25:181
1080199422,5cyclictest241ktimersoftd/121:45:231
1080199421,7cyclictest241ktimersoftd/123:05:141
1080099424,9cyclictest9-21ksoftirqd/019:55:230
139391410,0ptp4l401ktimersoftd/300:30:193
1080199415,6cyclictest25-21ksoftirqd/122:35:511
1080199415,5cyclictest25-21ksoftirqd/100:00:211
1080199414,5cyclictest25-21ksoftirqd/121:35:201
1080199412,5cyclictest25-21ksoftirqd/123:20:211
1080199411,5cyclictest241ktimersoftd/119:25:141
1080199411,4cyclictest0-21swapper/123:50:141
1080199410,5cyclictest311422sleep120:59:321
1080199410,5cyclictest241ktimersoftd/120:10:201
139391400,1ptp4l401ktimersoftd/321:58:563
1080199405,4cyclictest25-21ksoftirqd/122:30:141
1080199402,5cyclictest25-21ksoftirqd/120:50:261
10801994023,7cyclictest25-21ksoftirqd/122:25:211
1080299393,2cyclictest121rcu_preempt00:05:252
10802993932,4cyclictest33-21ksoftirqd/200:04:412
10801993925,4cyclictest25-21ksoftirqd/120:00:181
1080199382,6cyclictest25-21ksoftirqd/123:10:031
1080199381,6cyclictest14366-21open_files19:15:231
1080199380,5cyclictest241ktimersoftd/119:55:261
10803993729,6cyclictest41-21ksoftirqd/323:04:533
10802993731,4cyclictest33-21ksoftirqd/220:40:402
1080199374,4cyclictest25-21ksoftirqd/122:55:201
139391360,0ptp4l401ktimersoftd/320:35:143
10802993631,3cyclictest33-21ksoftirqd/221:30:002
10802993630,4cyclictest33-21ksoftirqd/223:48:472
10802993630,4cyclictest33-21ksoftirqd/221:07:042
10802993629,5cyclictest33-21ksoftirqd/221:01:142
10802993629,5cyclictest33-21ksoftirqd/221:01:142
139391350,0ptp4l401ktimersoftd/320:25:123
10803993529,4cyclictest41-21ksoftirqd/321:01:513
10803993529,4cyclictest41-21ksoftirqd/321:01:513
10802993529,4cyclictest33-21ksoftirqd/222:23:332
10802993529,4cyclictest33-21ksoftirqd/222:00:072
10802993529,4cyclictest33-21ksoftirqd/219:26:422
10802993529,4cyclictest33-21ksoftirqd/200:24:252
10802993528,5cyclictest33-21ksoftirqd/220:35:182
10803993429,3cyclictest41-21ksoftirqd/323:06:583
10803993429,3cyclictest41-21ksoftirqd/320:20:013
10803993428,4cyclictest41-21ksoftirqd/322:37:143
10803993428,4cyclictest41-21ksoftirqd/320:22:073
10803993428,4cyclictest41-21ksoftirqd/320:00:333
10803993428,4cyclictest41-21ksoftirqd/319:53:033
10803993428,4cyclictest41-21ksoftirqd/319:35:463
10803993428,4cyclictest41-21ksoftirqd/319:35:463
10803993428,4cyclictest41-21ksoftirqd/300:08:243
10802993429,3cyclictest33-21ksoftirqd/200:10:132
10802993428,4cyclictest33-21ksoftirqd/223:50:552
10802993428,4cyclictest33-21ksoftirqd/223:30:332
10802993428,4cyclictest33-21ksoftirqd/220:22:062
139391330,0ptp4l401ktimersoftd/300:00:563
10803993328,3cyclictest41-21ksoftirqd/323:55:423
10803993328,3cyclictest41-21ksoftirqd/323:55:423
10803993328,3cyclictest41-21ksoftirqd/320:10:103
10803993328,3cyclictest41-21ksoftirqd/319:46:543
10803993328,3cyclictest41-21ksoftirqd/319:42:403
10803993327,4cyclictest41-21ksoftirqd/323:49:473
10803993327,4cyclictest41-21ksoftirqd/323:13:123
10803993327,4cyclictest41-21ksoftirqd/322:59:293
10803993327,4cyclictest41-21ksoftirqd/322:29:363
10803993327,4cyclictest41-21ksoftirqd/322:08:103
10803993327,4cyclictest41-21ksoftirqd/321:52:063
10803993327,4cyclictest41-21ksoftirqd/320:45:463
10803993327,4cyclictest41-21ksoftirqd/300:20:123
10802993329,3cyclictest33-21ksoftirqd/221:44:382
10802993327,4cyclictest33-21ksoftirqd/223:41:322
10802993327,4cyclictest33-21ksoftirqd/222:52:052
10802993327,4cyclictest33-21ksoftirqd/220:48:222
139391320,0ptp4l401ktimersoftd/323:50:163
139391320,0ptp4l401ktimersoftd/321:45:183
139391320,0ptp4l401ktimersoftd/321:25:063
139391320,0ptp4l401ktimersoftd/321:07:523
139391320,0ptp4l401ktimersoftd/320:58:033
139391320,0ptp4l401ktimersoftd/319:57:303
10803993227,3cyclictest41-21ksoftirqd/323:43:023
10803993227,3cyclictest41-21ksoftirqd/323:29:573
10803993227,3cyclictest41-21ksoftirqd/323:29:573
10803993227,3cyclictest41-21ksoftirqd/320:30:553
10803993226,4cyclictest41-21ksoftirqd/322:42:353
10803993226,4cyclictest41-21ksoftirqd/322:10:553
10803993226,4cyclictest41-21ksoftirqd/320:08:363
10803993226,4cyclictest41-21ksoftirqd/300:12:413
10802993227,3cyclictest33-21ksoftirqd/221:50:112
10802993227,3cyclictest33-21ksoftirqd/221:32:202
10802993227,3cyclictest33-21ksoftirqd/219:39:152
10802993227,3cyclictest33-21ksoftirqd/219:39:152
10802993226,4cyclictest33-21ksoftirqd/223:27:002
10802993226,4cyclictest33-21ksoftirqd/223:27:002
10802993226,4cyclictest33-21ksoftirqd/222:08:132
10802993226,4cyclictest33-21ksoftirqd/221:58:222
10802993226,4cyclictest33-21ksoftirqd/219:53:422
10802993226,4cyclictest33-21ksoftirqd/200:35:072
10802993225,5cyclictest33-21ksoftirqd/223:36:552
139391310,24ptp4l35892irq/126-enp1s0-19:20:013
139391310,0ptp4l401ktimersoftd/323:21:033
139391310,0ptp4l401ktimersoftd/321:43:083
139391310,0ptp4l401ktimersoftd/319:22:213
10803993126,3cyclictest41-21ksoftirqd/322:20:473
10803993125,3cyclictest41-21ksoftirqd/323:18:583
10802993126,3cyclictest33-21ksoftirqd/222:47:362
10802993126,3cyclictest33-21ksoftirqd/222:14:572
10802993126,3cyclictest33-21ksoftirqd/221:45:522
10802993126,3cyclictest33-21ksoftirqd/219:56:212
10802993125,4cyclictest33-21ksoftirqd/223:55:122
10802993125,4cyclictest33-21ksoftirqd/223:55:112
10802993125,4cyclictest33-21ksoftirqd/222:29:312
10802993125,4cyclictest33-21ksoftirqd/221:18:232
10802993125,4cyclictest33-21ksoftirqd/219:18:282
10802993125,3cyclictest33-21ksoftirqd/221:20:122
139391300,0ptp4l401ktimersoftd/322:01:003
10803993025,3cyclictest41-21ksoftirqd/321:12:193
10803993025,3cyclictest41-21ksoftirqd/320:54:543
10803993025,3cyclictest41-21ksoftirqd/300:36:473
10803993024,4cyclictest41-21ksoftirqd/323:31:133
10803993024,4cyclictest41-21ksoftirqd/321:39:063
10803993024,4cyclictest41-21ksoftirqd/320:42:493
10802993025,3cyclictest33-21ksoftirqd/223:16:422
10802993025,3cyclictest33-21ksoftirqd/222:59:562
10802993025,3cyclictest33-21ksoftirqd/220:04:222
10802993025,3cyclictest33-21ksoftirqd/200:17:532
10802993024,4cyclictest33-21ksoftirqd/223:09:392
10802993024,4cyclictest33-21ksoftirqd/222:42:592
10802993024,4cyclictest33-21ksoftirqd/219:43:592
139391290,0ptp4l401ktimersoftd/322:51:183
10803992924,3cyclictest41-21ksoftirqd/319:28:003
10802992924,3cyclictest33-21ksoftirqd/223:12:002
10802992924,3cyclictest33-21ksoftirqd/221:37:492
10802992924,3cyclictest33-21ksoftirqd/219:46:332
10802992924,3cyclictest33-21ksoftirqd/200:33:262
10802992923,4cyclictest33-21ksoftirqd/220:52:192
10802992923,4cyclictest33-21ksoftirqd/220:16:212
139391280,0ptp4l401ktimersoftd/319:31:203
10803992822,4cyclictest41-21ksoftirqd/322:18:053
10802992823,3cyclictest33-21ksoftirqd/220:56:312
10802992823,3cyclictest33-21ksoftirqd/220:06:312
10802992822,4cyclictest33-21ksoftirqd/223:01:012
10802992822,4cyclictest33-21ksoftirqd/222:33:372
10802992822,4cyclictest33-21ksoftirqd/222:18:242
10802992722,3cyclictest33-21ksoftirqd/223:23:102
10802992721,4cyclictest33-21ksoftirqd/220:28:482
10802992721,4cyclictest33-21ksoftirqd/219:11:102
139391260,1ptp4l401ktimersoftd/321:15:133
10802992622,2cyclictest33-21ksoftirqd/220:30:132
10802992621,3cyclictest33-21ksoftirqd/220:14:492
10802992621,3cyclictest33-21ksoftirqd/219:24:432
10802992621,3cyclictest33-21ksoftirqd/200:26:302
10802992621,3cyclictest33-21ksoftirqd/200:26:292
10802992620,4cyclictest33-21ksoftirqd/221:11:012
10803992519,3cyclictest41-21ksoftirqd/322:45:123
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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