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2026-07-25 - 14:26
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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 Jul 25, 2026 00:45:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
138591203169,23phc2sys0-21swapper/319:06:113
26732202168,22sleep20-21swapper/219:06:122
27992200168,21sleep10-21swapper/119:07:431
27662198164,23sleep00-21swapper/019:07:180
1385918363,10phc2sys0-21swapper/319:10:013
138491650,1ptp4l401ktimersoftd/322:49:233
138491650,1ptp4l401ktimersoftd/320:29:313
3268996222,7cyclictest25-21ksoftirqd/122:35:151
3268996123,7cyclictest25-21ksoftirqd/100:35:241
3268996030,4cyclictest25-21ksoftirqd/122:40:191
3268996021,7cyclictest25-21ksoftirqd/119:25:171
3268995623,10cyclictest25-21ksoftirqd/123:10:261
138491560,1ptp4l401ktimersoftd/320:06:313
138491540,1ptp4l401ktimersoftd/323:45:553
17192530,3sleep20-21swapper/221:15:202
17192530,3sleep20-21swapper/221:15:202
138491530,1ptp4l401ktimersoftd/320:42:253
3268995221,4cyclictest25-21ksoftirqd/121:35:171
138491520,1ptp4l401ktimersoftd/321:48:093
3268995019,7cyclictest25-21ksoftirqd/123:35:201
326999481,2cyclictest0-21swapper/222:25:242
3268994817,4cyclictest25-21ksoftirqd/122:25:001
326899476,6cyclictest25-21ksoftirqd/122:25:241
326899476,5cyclictest25-21ksoftirqd/120:50:231
3268994713,6cyclictest25-21ksoftirqd/119:14:121
326899470,6cyclictest25-21ksoftirqd/120:05:251
326899461,5cyclictest25-21ksoftirqd/121:55:161
3268994538,4cyclictest27911-21cron20:00:001
3268994527,10cyclictest25-21ksoftirqd/121:45:121
326899450,6cyclictest25-21ksoftirqd/123:55:141
3267994538,4cyclictest25083-21cron00:15:000
3270994428,3cyclictest41-21ksoftirqd/300:25:123
326899441,6cyclictest25-21ksoftirqd/120:20:271
3268994330,3cyclictest25-21ksoftirqd/123:00:131
138491430,0ptp4l401ktimersoftd/320:19:563
3268994217,10cyclictest25-21ksoftirqd/100:15:181
138491420,0ptp4l401ktimersoftd/322:31:133
138491420,0ptp4l401ktimersoftd/300:24:593
326899414,7cyclictest25-21ksoftirqd/122:45:151
326899413,35cyclictest18537-21fschecks_count22:55:161
326899412,5cyclictest25-21ksoftirqd/119:35:201
138491410,0ptp4l401ktimersoftd/323:33:313
138491410,0ptp4l401ktimersoftd/319:40:173
326999407,32cyclictest0-21swapper/222:20:242
326899402,5cyclictest25-21ksoftirqd/121:50:191
3268994021,10cyclictest25-21ksoftirqd/120:10:101
138491400,0ptp4l401ktimersoftd/323:50:173
138491400,0ptp4l401ktimersoftd/323:25:283
3269993928,4cyclictest33-21ksoftirqd/220:29:352
326899395,7cyclictest25-21ksoftirqd/120:29:251
326899392,7cyclictest25-21ksoftirqd/100:10:011
3268993923,5cyclictest25-21ksoftirqd/119:50:171
3268993919,8cyclictest25-21ksoftirqd/122:10:011
3267993932,4cyclictest9-21ksoftirqd/000:15:110
3270993832,4cyclictest41-21ksoftirqd/319:54:503
3270993831,4cyclictest41-21ksoftirqd/323:44:593
3270993731,4cyclictest41-21ksoftirqd/323:02:283
3269993731,4cyclictest33-21ksoftirqd/222:00:332
3269993731,4cyclictest33-21ksoftirqd/221:55:332
3269993731,4cyclictest33-21ksoftirqd/221:33:422
3269993731,4cyclictest33-21ksoftirqd/221:24:072
3269993730,4cyclictest33-21ksoftirqd/219:37:252
3269993718,17cyclictest33-21ksoftirqd/220:43:092
326899373,5cyclictest25-21ksoftirqd/123:25:251
3268993732,3cyclictest25-21ksoftirqd/122:05:001
3268993722,7cyclictest25-21ksoftirqd/119:15:201
326899370,6cyclictest21948-21strings19:45:221
3267993731,4cyclictest9-21ksoftirqd/021:03:560
3267993731,4cyclictest9-21ksoftirqd/020:31:550
3267993730,4cyclictest9-21ksoftirqd/022:58:160
138491370,32ptp4l35792irq/125-enp1s0-21:39:073
138491370,0ptp4l401ktimersoftd/319:55:163
3270993630,4cyclictest41-21ksoftirqd/322:55:433
3270993630,4cyclictest41-21ksoftirqd/322:41:553
3270993630,4cyclictest41-21ksoftirqd/322:12:353
3270993630,4cyclictest41-21ksoftirqd/321:30:343
3269993631,3cyclictest33-21ksoftirqd/223:47:372
3269993631,3cyclictest33-21ksoftirqd/221:45:102
3269993631,3cyclictest33-21ksoftirqd/200:24:282
3269993630,4cyclictest33-21ksoftirqd/221:36:222
3269993630,4cyclictest33-21ksoftirqd/221:02:052
3269993630,4cyclictest33-21ksoftirqd/220:32:332
3269993630,4cyclictest33-21ksoftirqd/200:31:052
326899364,6cyclictest25-21ksoftirqd/121:20:111
3268993629,4cyclictest25-21ksoftirqd/121:05:001
3268993622,4cyclictest25-21ksoftirqd/123:54:281
3267993630,4cyclictest9-21ksoftirqd/023:41:250
3267993630,4cyclictest9-21ksoftirqd/021:08:210
3267993630,4cyclictest9-21ksoftirqd/020:39:130
3267993630,4cyclictest9-21ksoftirqd/019:49:370
3267993629,5cyclictest9-21ksoftirqd/021:47:360
3267993629,4cyclictest9-21ksoftirqd/023:16:580
3270993530,3cyclictest41-21ksoftirqd/320:05:003
3270993530,3cyclictest41-21ksoftirqd/319:46:003
3270993529,4cyclictest41-21ksoftirqd/323:20:503
3270993529,4cyclictest41-21ksoftirqd/320:56:043
3270993529,4cyclictest41-21ksoftirqd/320:45:293
3270993528,4cyclictest41-21ksoftirqd/321:41:303
327099352,31cyclictest28833-21kworker/3:022:27:133
3269993529,4cyclictest33-21ksoftirqd/223:52:542
3269993529,4cyclictest33-21ksoftirqd/223:21:212
3269993529,4cyclictest33-21ksoftirqd/223:16:032
3269993529,4cyclictest33-21ksoftirqd/221:41:162
3269993529,4cyclictest33-21ksoftirqd/221:25:362
3269993529,4cyclictest33-21ksoftirqd/220:36:302
3269993529,4cyclictest33-21ksoftirqd/220:07:582
3269993529,4cyclictest33-21ksoftirqd/220:03:162
3269993529,4cyclictest33-21ksoftirqd/219:46:462
3269993529,4cyclictest33-21ksoftirqd/219:16:012
326899354,8cyclictest25-21ksoftirqd/100:20:231
3268993529,4cyclictest25-21ksoftirqd/122:16:381
3268993529,4cyclictest25-21ksoftirqd/120:48:321
3268993529,4cyclictest25-21ksoftirqd/100:13:351
326899352,5cyclictest25-21ksoftirqd/123:20:431
3267993530,3cyclictest9-21ksoftirqd/022:48:210
3267993529,4cyclictest9-21ksoftirqd/023:02:210
3267993529,4cyclictest9-21ksoftirqd/022:33:340
3267993529,4cyclictest9-21ksoftirqd/022:21:010
3267993529,4cyclictest9-21ksoftirqd/022:08:460
3267993529,4cyclictest9-21ksoftirqd/021:43:340
3267993529,4cyclictest9-21ksoftirqd/020:10:070
3267993529,4cyclictest9-21ksoftirqd/020:02:140
3267993529,4cyclictest9-21ksoftirqd/019:53:100
3267993529,4cyclictest9-21ksoftirqd/000:37:050
3267993529,3cyclictest9-21ksoftirqd/021:30:010
3270993429,3cyclictest41-21ksoftirqd/322:08:053
3270993429,3cyclictest41-21ksoftirqd/320:11:403
3270993428,4cyclictest41-21ksoftirqd/323:36:263
3270993428,4cyclictest41-21ksoftirqd/321:55:243
3270993428,4cyclictest41-21ksoftirqd/321:20:073
3270993428,4cyclictest41-21ksoftirqd/321:09:403
3270993428,4cyclictest41-21ksoftirqd/319:32:553
3270993427,5cyclictest41-21ksoftirqd/300:35:523
3269993429,3cyclictest33-21ksoftirqd/222:56:062
3269993428,4cyclictest33-21ksoftirqd/223:35:292
3269993428,4cyclictest33-21ksoftirqd/222:30:542
3269993428,4cyclictest33-21ksoftirqd/220:58:592
3269993428,4cyclictest33-21ksoftirqd/220:53:142
3269993428,4cyclictest33-21ksoftirqd/219:34:282
3269993428,4cyclictest33-21ksoftirqd/200:04:382
3268993430,3cyclictest25-21ksoftirqd/121:25:131
3268993430,3cyclictest25-21ksoftirqd/121:10:131
3268993429,3cyclictest25-21ksoftirqd/123:30:151
3268993429,3cyclictest25-21ksoftirqd/123:10:001
3268993429,3cyclictest25-21ksoftirqd/100:30:141
3268993428,4cyclictest25-21ksoftirqd/122:05:421
3268993428,4cyclictest25-21ksoftirqd/100:08:501
3268993428,4cyclictest25-21ksoftirqd/100:02:231
3268993427,4cyclictest25-21ksoftirqd/119:31:211
3267993428,4cyclictest9-21ksoftirqd/023:36:480
3267993428,4cyclictest9-21ksoftirqd/022:15:000
3267993428,4cyclictest9-21ksoftirqd/021:20:000
3267993428,4cyclictest9-21ksoftirqd/021:20:000
3267993428,4cyclictest9-21ksoftirqd/019:59:240
3267993428,4cyclictest9-21ksoftirqd/019:42:230
3267993428,4cyclictest9-21ksoftirqd/000:02:110
3267993428,3cyclictest9-21ksoftirqd/020:52:100
3267993428,3cyclictest9-21ksoftirqd/000:06:280
3267993428,3cyclictest9-21ksoftirqd/000:06:280
3267993427,4cyclictest9-21ksoftirqd/021:52:370
3267993427,4cyclictest9-21ksoftirqd/000:34:120
138491340,0ptp4l401ktimersoftd/320:35:273
138491340,0ptp4l401ktimersoftd/300:10:163
3270993328,3cyclictest41-21ksoftirqd/300:06:113
3270993328,3cyclictest41-21ksoftirqd/300:06:113
3270993327,4cyclictest41-21ksoftirqd/323:09:023
3270993327,4cyclictest41-21ksoftirqd/321:53:083
3270993327,4cyclictest41-21ksoftirqd/319:18:163
3270993327,4cyclictest41-21ksoftirqd/300:18:313
3269993328,3cyclictest33-21ksoftirqd/200:27:022
3269993327,4cyclictest33-21ksoftirqd/223:40:072
3269993327,4cyclictest33-21ksoftirqd/222:38:372
3269993327,4cyclictest33-21ksoftirqd/221:06:312
3269993326,4cyclictest33-21ksoftirqd/223:27:112
3269993326,4cyclictest33-21ksoftirqd/200:06:022
3269993326,4cyclictest33-21ksoftirqd/200:06:022
326899333,6cyclictest25-21ksoftirqd/119:40:511
3268993330,2cyclictest25-21ksoftirqd/119:20:151
3268993328,3cyclictest25-21ksoftirqd/121:05:111
3268993326,4cyclictest25-21ksoftirqd/122:51:231
3268993322,9cyclictest25-21ksoftirqd/123:45:241
3268993317,7cyclictest25-21ksoftirqd/121:34:461
326899331,6cyclictest25-21ksoftirqd/100:25:271
3267993328,3cyclictest9-21ksoftirqd/023:51:240
3267993328,3cyclictest9-21ksoftirqd/021:10:570
3267993328,3cyclictest9-21ksoftirqd/019:15:100
3267993327,4cyclictest9-21ksoftirqd/023:33:020
3267993327,4cyclictest9-21ksoftirqd/019:36:300
3267993327,4cyclictest9-21ksoftirqd/019:10:100
3267993327,3cyclictest9-21ksoftirqd/022:40:120
3267993327,3cyclictest9-21ksoftirqd/020:45:000
3267993326,4cyclictest9-21ksoftirqd/019:30:490
3270993227,3cyclictest41-21ksoftirqd/323:18:283
3270993226,4cyclictest41-21ksoftirqd/323:10:073
3270993226,4cyclictest41-21ksoftirqd/319:37:053
3269993227,3cyclictest33-21ksoftirqd/221:10:102
3269993227,3cyclictest33-21ksoftirqd/220:48:292
3269993227,3cyclictest33-21ksoftirqd/200:12:102
3269993226,4cyclictest33-21ksoftirqd/223:32:522
3269993226,4cyclictest33-21ksoftirqd/223:12:062
3269993226,4cyclictest33-21ksoftirqd/223:03:332
3269993226,4cyclictest33-21ksoftirqd/222:47:472
3269993226,4cyclictest33-21ksoftirqd/221:52:152
3269993226,4cyclictest33-21ksoftirqd/220:21:202
3269993226,4cyclictest33-21ksoftirqd/220:15:072
3269993225,4cyclictest33-21ksoftirqd/222:06:192
326899324,6cyclictest25-21ksoftirqd/121:40:261
326899323,8cyclictest25-21ksoftirqd/120:30:181
3268993225,4cyclictest25-21ksoftirqd/121:19:091
3268993225,4cyclictest25-21ksoftirqd/121:19:081
326899320,4cyclictest0-21swapper/120:40:571
3267993227,3cyclictest9-21ksoftirqd/021:56:590
3267993227,3cyclictest9-21ksoftirqd/020:59:220
3267993227,3cyclictest9-21ksoftirqd/020:08:360
3267993226,4cyclictest9-21ksoftirqd/023:27:050
3267993226,4cyclictest9-21ksoftirqd/023:08:470
3267993226,4cyclictest9-21ksoftirqd/022:38:300
3267993226,4cyclictest9-21ksoftirqd/022:18:090
3267993226,4cyclictest9-21ksoftirqd/022:00:570
3267993226,4cyclictest9-21ksoftirqd/020:23:550
3267993226,4cyclictest9-21ksoftirqd/019:22:090
3267993226,3cyclictest9-21ksoftirqd/021:20:100
3267993225,4cyclictest9-21ksoftirqd/021:35:080
138491320,0ptp4l401ktimersoftd/321:29:103
3270993125,4cyclictest41-21ksoftirqd/322:36:023
3270993125,4cyclictest41-21ksoftirqd/321:14:013
3270993125,4cyclictest41-21ksoftirqd/300:30:503
3269993125,4cyclictest33-21ksoftirqd/220:11:342
3268993124,4cyclictest25-21ksoftirqd/123:15:111
3268993121,4cyclictest25-21ksoftirqd/123:40:151
3268993121,3cyclictest25-21ksoftirqd/120:15:151
3268993119,3cyclictest25-21ksoftirqd/120:00:171
3267993126,3cyclictest9-21ksoftirqd/000:24:540
3267993125,4cyclictest9-21ksoftirqd/023:49:510
3267993125,4cyclictest9-21ksoftirqd/023:22:270
3267993125,4cyclictest9-21ksoftirqd/020:19:420
3267993125,4cyclictest9-21ksoftirqd/019:25:300
138491310,0ptp4l401ktimersoftd/322:20:183
138491310,0ptp4l401ktimersoftd/321:03:213
3270993025,3cyclictest41-21ksoftirqd/320:20:113
3270993025,3cyclictest41-21ksoftirqd/319:22:133
3270993024,4cyclictest41-21ksoftirqd/322:51:293
3269993024,4cyclictest33-21ksoftirqd/222:13:332
3269993024,4cyclictest33-21ksoftirqd/219:26:012
3268993026,3cyclictest25-21ksoftirqd/120:35:131
3268993025,3cyclictest25-21ksoftirqd/122:32:061
3267993025,3cyclictest9-21ksoftirqd/022:27:590
3267993024,4cyclictest9-21ksoftirqd/021:33:040
3267993023,4cyclictest9-21ksoftirqd/023:13:330
138491300,0ptp4l401ktimersoftd/323:55:193
138491300,0ptp4l401ktimersoftd/321:16:593
138491300,0ptp4l401ktimersoftd/321:16:583
3270992924,3cyclictest41-21ksoftirqd/322:18:083
3269992925,2cyclictest33-21ksoftirqd/223:10:002
3269992924,3cyclictest33-21ksoftirqd/219:42:252
3269992924,3cyclictest33-21ksoftirqd/200:18:522
3269992923,4cyclictest33-21ksoftirqd/222:51:242
3269992923,4cyclictest33-21ksoftirqd/219:54:492
3269992921,5cyclictest33-21ksoftirqd/222:20:002
3268992925,2cyclictest25-21ksoftirqd/120:55:141
3267992923,4cyclictest9-21ksoftirqd/023:58:540
3267992923,4cyclictest9-21ksoftirqd/020:26:000
327099282,24cyclictest24682-21kworker/3:122:02:533
3269992823,3cyclictest33-21ksoftirqd/222:40:122
3267992822,4cyclictest9-21ksoftirqd/020:48:060
3267992822,4cyclictest9-21ksoftirqd/000:26:340
138491280,0ptp4l401ktimersoftd/320:34:303
3270992722,3cyclictest41-21ksoftirqd/300:00:523
3270992721,4cyclictest41-21ksoftirqd/319:25:573
3267992721,3cyclictest9-21ksoftirqd/022:50:110
3269992519,4cyclictest33-21ksoftirqd/223:57:112
138491250,0ptp4l401ktimersoftd/320:50:263
326999240,22cyclictest0-21swapper/219:59:452
3269992318,3cyclictest33-21ksoftirqd/219:12:222
3269992318,3cyclictest33-21ksoftirqd/200:35:572
326999230,1cyclictest0-21swapper/219:23:322
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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