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2026-03-14 - 18:28
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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 Sat Mar 14, 2026 12:45:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
91132227164,51sleep30-21swapper/307:08:483
91172203170,21sleep20-21swapper/207:08:512
91612201167,23sleep10-21swapper/107:09:261
69952195161,22sleep00-21swapper/007:05:110
138491690,14ptp4l0-21swapper/307:25:143
138491610,1ptp4l401ktimersoftd/312:16:023
79072600,2sleep27911-21irqrtprio09:15:192
119902600,3sleep30-21swapper/310:30:133
111662580,2sleep10-21swapper/110:25:261
155462570,5sleep015549-21irqrtprio11:40:190
313262530,4sleep2321ktimersoftd/211:05:262
274912520,2sleep10-21swapper/109:55:171
138491520,1ptp4l401ktimersoftd/310:10:273
138491510,1ptp4l401ktimersoftd/311:46:523
950299471,43cyclictest29469-21latency_hist11:05:002
138491430,0ptp4l401ktimersoftd/308:55:153
950199421,3cyclictest121rcu_preempt08:19:301
138491420,0ptp4l401ktimersoftd/312:00:503
138491420,0ptp4l401ktimersoftd/308:19:323
138491420,0ptp4l401ktimersoftd/307:41:343
9502994036,2cyclictest33-21ksoftirqd/209:00:002
9502994035,3cyclictest33-21ksoftirqd/208:30:002
9502994028,10cyclictest33-21ksoftirqd/209:10:262
2944324033,3sleep341-21ksoftirqd/311:05:003
9502993932,4cyclictest26625-21cron09:55:002
9503993833,3cyclictest41-21ksoftirqd/308:35:003
9503993830,4cyclictest41-21ksoftirqd/312:20:133
9502993833,3cyclictest33-21ksoftirqd/211:50:012
9502993833,3cyclictest33-21ksoftirqd/208:50:172
9502993832,3cyclictest33-21ksoftirqd/209:05:012
9502993832,3cyclictest33-21ksoftirqd/207:50:002
9502993831,5cyclictest33-21ksoftirqd/212:10:162
9502993831,5cyclictest33-21ksoftirqd/212:10:162
9502993827,9cyclictest33-21ksoftirqd/209:35:202
50798380,3rtkit-daemon3370-21python08:00:232
138491380,0ptp4l401ktimersoftd/310:15:203
9503993731,4cyclictest41-21ksoftirqd/311:31:223
950399371,6cyclictest155452missed_timers10:35:223
9502993731,4cyclictest33-21ksoftirqd/211:32:422
9502993725,9cyclictest33-21ksoftirqd/210:40:252
9501993731,4cyclictest25-21ksoftirqd/107:21:361
138491370,0ptp4l401ktimersoftd/311:38:013
9503993630,4cyclictest41-21ksoftirqd/312:31:523
9502993632,2cyclictest33-21ksoftirqd/207:20:002
9502993631,3cyclictest33-21ksoftirqd/211:40:002
9502993631,3cyclictest33-21ksoftirqd/208:00:002
9502993630,4cyclictest33-21ksoftirqd/207:53:032
9502993629,5cyclictest33-21ksoftirqd/207:28:112
9502993629,4cyclictest33-21ksoftirqd/211:40:132
9502993625,9cyclictest33-21ksoftirqd/211:25:172
9501993631,3cyclictest25-21ksoftirqd/109:53:591
9501993630,4cyclictest25-21ksoftirqd/111:33:461
9500993630,3cyclictest9-21ksoftirqd/009:08:590
9500993629,5cyclictest9-21ksoftirqd/007:48:150
9503993529,4cyclictest41-21ksoftirqd/308:40:453
9503993520,13cyclictest41-21ksoftirqd/308:25:003
9502993530,3cyclictest33-21ksoftirqd/208:10:102
9502993530,3cyclictest33-21ksoftirqd/207:30:182
9502993530,2cyclictest33-21ksoftirqd/209:35:002
9502993529,4cyclictest33-21ksoftirqd/211:13:522
9502993529,4cyclictest33-21ksoftirqd/210:06:212
9502993529,4cyclictest33-21ksoftirqd/209:42:342
9502993528,4cyclictest33-21ksoftirqd/211:24:242
9502993523,10cyclictest33-21ksoftirqd/208:35:252
950199357,26cyclictest0-21swapper/112:35:321
9501993530,3cyclictest25-21ksoftirqd/107:40:001
9501993529,4cyclictest25-21ksoftirqd/110:02:471
9501993529,4cyclictest25-21ksoftirqd/109:16:581
9501993529,4cyclictest25-21ksoftirqd/109:12:011
9501993529,4cyclictest25-21ksoftirqd/108:52:111
9501993529,4cyclictest25-21ksoftirqd/107:55:381
9500993530,3cyclictest9-21ksoftirqd/010:35:240
9500993529,4cyclictest9-21ksoftirqd/010:56:540
9500993529,4cyclictest9-21ksoftirqd/010:52:290
9500993529,4cyclictest9-21ksoftirqd/010:52:290
9500993529,4cyclictest9-21ksoftirqd/010:44:220
9500993529,4cyclictest9-21ksoftirqd/010:26:370
9500993529,4cyclictest9-21ksoftirqd/009:11:150
9500993529,4cyclictest9-21ksoftirqd/007:50:280
9500993529,4cyclictest9-21ksoftirqd/007:17:580
138491350,0ptp4l401ktimersoftd/309:05:063
9503993429,3cyclictest41-21ksoftirqd/312:11:073
9503993429,3cyclictest41-21ksoftirqd/312:11:073
9503993429,3cyclictest41-21ksoftirqd/311:14:073
9503993429,3cyclictest41-21ksoftirqd/308:25:113
9503993428,4cyclictest41-21ksoftirqd/311:26:343
9503993428,4cyclictest41-21ksoftirqd/311:07:403
9503993428,4cyclictest41-21ksoftirqd/309:39:313
9503993428,4cyclictest41-21ksoftirqd/307:55:403
9503993428,4cyclictest41-21ksoftirqd/307:34:343
9503993428,4cyclictest41-21ksoftirqd/307:13:373
9502993429,3cyclictest33-21ksoftirqd/209:28:292
9502993429,3cyclictest33-21ksoftirqd/207:45:002
9502993428,4cyclictest33-21ksoftirqd/212:28:232
9502993428,4cyclictest33-21ksoftirqd/210:29:242
9502993428,4cyclictest33-21ksoftirqd/210:13:562
9502993428,4cyclictest33-21ksoftirqd/209:59:392
9502993428,4cyclictest33-21ksoftirqd/209:05:112
9502993428,4cyclictest33-21ksoftirqd/208:06:222
9502993427,5cyclictest33-21ksoftirqd/212:01:432
9501993430,3cyclictest25-21ksoftirqd/108:04:291
9501993429,3cyclictest25-21ksoftirqd/110:51:081
9501993429,3cyclictest25-21ksoftirqd/110:51:081
9501993429,3cyclictest25-21ksoftirqd/110:38:141
9501993428,4cyclictest25-21ksoftirqd/112:07:071
9501993428,4cyclictest25-21ksoftirqd/109:23:081
9501993427,4cyclictest25-21ksoftirqd/109:07:591
9500993428,4cyclictest9-21ksoftirqd/012:28:210
9500993428,4cyclictest9-21ksoftirqd/012:23:460
9500993428,4cyclictest9-21ksoftirqd/012:18:410
9500993428,4cyclictest9-21ksoftirqd/011:56:590
9500993428,4cyclictest9-21ksoftirqd/010:48:280
9500993428,4cyclictest9-21ksoftirqd/010:20:070
9500993428,4cyclictest9-21ksoftirqd/010:00:060
9500993428,4cyclictest9-21ksoftirqd/007:37:560
9503993328,3cyclictest41-21ksoftirqd/309:32:053
9503993328,3cyclictest41-21ksoftirqd/309:17:543
9503993328,3cyclictest41-21ksoftirqd/308:53:103
9503993327,4cyclictest41-21ksoftirqd/310:43:093
9503993327,4cyclictest41-21ksoftirqd/309:50:023
9503993327,4cyclictest41-21ksoftirqd/309:49:093
9503993327,4cyclictest41-21ksoftirqd/309:29:113
9503993327,4cyclictest41-21ksoftirqd/308:13:013
9502993329,2cyclictest33-21ksoftirqd/209:45:202
9502993328,3cyclictest33-21ksoftirqd/212:22:572
9502993328,3cyclictest33-21ksoftirqd/208:50:002
9502993328,3cyclictest33-21ksoftirqd/208:50:002
9501993328,3cyclictest25-21ksoftirqd/110:17:321
9501993328,3cyclictest25-21ksoftirqd/110:09:591
9501993327,4cyclictest25-21ksoftirqd/111:49:171
9501993327,4cyclictest25-21ksoftirqd/111:22:221
9501993327,4cyclictest25-21ksoftirqd/109:49:561
9501993327,4cyclictest25-21ksoftirqd/108:26:191
9501993327,4cyclictest25-21ksoftirqd/107:29:191
9500993328,3cyclictest9-21ksoftirqd/008:07:410
9500993327,4cyclictest9-21ksoftirqd/011:45:320
9500993327,4cyclictest9-21ksoftirqd/010:10:370
9500993327,4cyclictest9-21ksoftirqd/010:08:400
9500993327,4cyclictest9-21ksoftirqd/008:52:300
9500993327,4cyclictest9-21ksoftirqd/008:01:150
9500993327,4cyclictest9-21ksoftirqd/007:41:020
9500993325,5cyclictest9-21ksoftirqd/012:15:000
9500993325,5cyclictest9-21ksoftirqd/012:14:590
138491330,0ptp4l401ktimersoftd/308:35:203
9503993227,3cyclictest41-21ksoftirqd/310:58:153
9503993227,3cyclictest41-21ksoftirqd/309:55:193
9503993227,3cyclictest41-21ksoftirqd/308:00:113
9503993227,3cyclictest41-21ksoftirqd/307:49:483
9503993226,4cyclictest41-21ksoftirqd/312:25:433
9503993226,4cyclictest41-21ksoftirqd/311:16:513
9503993226,4cyclictest41-21ksoftirqd/310:07:063
9503993226,4cyclictest41-21ksoftirqd/307:22:393
9503993226,3cyclictest41-21ksoftirqd/307:36:043
9502993227,3cyclictest33-21ksoftirqd/212:20:002
9502993227,3cyclictest33-21ksoftirqd/211:15:182
9502993227,3cyclictest33-21ksoftirqd/210:55:152
9502993227,3cyclictest33-21ksoftirqd/207:35:132
9502993226,4cyclictest33-21ksoftirqd/212:30:102
9502993226,4cyclictest33-21ksoftirqd/212:07:292
9502993226,4cyclictest33-21ksoftirqd/210:19:292
9502993226,4cyclictest33-21ksoftirqd/208:21:352
9502993226,4cyclictest33-21ksoftirqd/207:22:182
9501993227,3cyclictest25-21ksoftirqd/110:34:551
9501993227,3cyclictest25-21ksoftirqd/110:21:291
9501993226,4cyclictest25-21ksoftirqd/112:19:311
9501993226,4cyclictest25-21ksoftirqd/111:57:401
9501993226,4cyclictest25-21ksoftirqd/111:44:321
9501993226,4cyclictest25-21ksoftirqd/109:38:441
9501993226,4cyclictest25-21ksoftirqd/109:02:461
9501993226,4cyclictest25-21ksoftirqd/108:45:371
9501993226,4cyclictest25-21ksoftirqd/108:45:371
9500993227,3cyclictest9-21ksoftirqd/011:14:580
9500993227,3cyclictest9-21ksoftirqd/008:29:030
9500993226,4cyclictest9-21ksoftirqd/011:27:550
9500993226,4cyclictest9-21ksoftirqd/010:16:420
9500993226,4cyclictest9-21ksoftirqd/009:32:340
9500993226,4cyclictest9-21ksoftirqd/008:56:590
9500993226,4cyclictest9-21ksoftirqd/007:22:080
9500993226,3cyclictest9553-21cron12:35:010
9500993225,4cyclictest9-21ksoftirqd/009:16:170
9500993218,6cyclictest9-21ksoftirqd/011:00:200
9503993126,3cyclictest41-21ksoftirqd/312:05:383
9503993126,3cyclictest41-21ksoftirqd/309:22:153
9503993125,4cyclictest41-21ksoftirqd/311:23:533
9503993125,4cyclictest41-21ksoftirqd/308:46:513
9503993125,4cyclictest41-21ksoftirqd/308:46:513
9503993125,3cyclictest41-21ksoftirqd/308:05:453
9502993127,2cyclictest33-21ksoftirqd/210:30:182
9502993126,3cyclictest33-21ksoftirqd/212:40:012
9502993126,3cyclictest33-21ksoftirqd/208:15:222
9502993125,4cyclictest33-21ksoftirqd/210:03:162
9502993120,9cyclictest33-21ksoftirqd/211:50:232
9502993120,9cyclictest33-21ksoftirqd/210:45:262
9501993126,3cyclictest1970-21cron11:15:001
9501993125,4cyclictest25-21ksoftirqd/111:04:371
9501993125,4cyclictest25-21ksoftirqd/110:58:151
9501993125,4cyclictest25-21ksoftirqd/109:44:141
9501993125,4cyclictest25-21ksoftirqd/108:05:531
9501993125,4cyclictest25-21ksoftirqd/107:54:381
9501993125,4cyclictest25-21ksoftirqd/107:49:111
9500993126,3cyclictest9-21ksoftirqd/011:08:540
9500993126,3cyclictest9-21ksoftirqd/008:13:430
9500993125,4cyclictest9-21ksoftirqd/011:50:380
9500993125,4cyclictest9-21ksoftirqd/009:49:510
9500993125,4cyclictest9-21ksoftirqd/008:43:510
9500993125,4cyclictest9-21ksoftirqd/008:23:210
9500993125,4cyclictest9-21ksoftirqd/007:56:300
138491310,1ptp4l401ktimersoftd/310:48:243
138491310,0ptp4l401ktimersoftd/311:42:203
9503993025,3cyclictest41-21ksoftirqd/310:55:003
9503993025,3cyclictest41-21ksoftirqd/310:55:003
9503993025,3cyclictest41-21ksoftirqd/310:23:083
9502993025,3cyclictest33-21ksoftirqd/210:50:192
9502993025,3cyclictest33-21ksoftirqd/210:50:192
9502993025,3cyclictest33-21ksoftirqd/208:35:002
9502993019,9cyclictest33-21ksoftirqd/210:20:232
950199303,25cyclictest0-21swapper/107:15:041
9501993025,3cyclictest25-21ksoftirqd/111:50:011
9501993025,3cyclictest25-21ksoftirqd/108:55:041
9501993025,3cyclictest25-21ksoftirqd/108:30:401
9501993024,4cyclictest25-21ksoftirqd/110:47:401
9501993024,4cyclictest25-21ksoftirqd/108:37:471
9501993023,5cyclictest25-21ksoftirqd/108:44:331
9500993024,4cyclictest9-21ksoftirqd/012:06:020
9500993024,4cyclictest9-21ksoftirqd/011:33:570
9500993024,4cyclictest9-21ksoftirqd/011:23:140
9500993024,4cyclictest9-21ksoftirqd/011:18:360
9500993024,4cyclictest9-21ksoftirqd/009:57:410
9500993024,4cyclictest9-21ksoftirqd/009:35:130
9500993024,4cyclictest9-21ksoftirqd/009:01:000
9500993024,4cyclictest9-21ksoftirqd/007:33:190
9500993023,5cyclictest9-21ksoftirqd/009:22:510
138491300,0ptp4l401ktimersoftd/310:25:173
9503992924,3cyclictest41-21ksoftirqd/311:59:173
9503992924,3cyclictest41-21ksoftirqd/310:02:573
9503992924,3cyclictest41-21ksoftirqd/309:10:293
9503992923,4cyclictest41-21ksoftirqd/311:51:563
9503992923,4cyclictest41-21ksoftirqd/309:44:273
9502992924,3cyclictest33-21ksoftirqd/207:10:482
9502992917,9cyclictest33-21ksoftirqd/210:35:202
9501992925,3cyclictest25-21ksoftirqd/107:10:241
9501992924,3cyclictest25-21ksoftirqd/108:24:501
9501992924,3cyclictest25-21ksoftirqd/107:40:351
9501992923,4cyclictest25-21ksoftirqd/112:04:101
9501992923,4cyclictest25-21ksoftirqd/109:27:371
9500992924,3cyclictest9-21ksoftirqd/012:36:240
9500992924,3cyclictest9-21ksoftirqd/012:00:010
9500992924,3cyclictest9-21ksoftirqd/009:44:590
9500992923,4cyclictest9-21ksoftirqd/008:39:100
9502992823,3cyclictest33-21ksoftirqd/208:45:002
9502992818,9cyclictest33-21ksoftirqd/209:20:272
9502992817,9cyclictest33-21ksoftirqd/211:55:152
9501992823,3cyclictest25-21ksoftirqd/112:25:531
9501992823,3cyclictest25-21ksoftirqd/112:10:101
9501992823,3cyclictest25-21ksoftirqd/112:10:101
9501992822,4cyclictest25-21ksoftirqd/111:27:361
9501992822,4cyclictest25-21ksoftirqd/111:19:221
9501992822,4cyclictest25-21ksoftirqd/110:42:591
9501992822,4cyclictest25-21ksoftirqd/110:12:171
9500992823,3cyclictest9-21ksoftirqd/011:37:570
9500992822,4cyclictest9-21ksoftirqd/009:51:110
9500992822,4cyclictest9-21ksoftirqd/008:47:120
9500992822,4cyclictest9-21ksoftirqd/008:47:120
9500992822,4cyclictest9-21ksoftirqd/007:14:500
9503992721,4cyclictest41-21ksoftirqd/307:51:433
9501992722,3cyclictest25-21ksoftirqd/112:30:451
9501992722,3cyclictest25-21ksoftirqd/111:05:431
9500992722,3cyclictest9-21ksoftirqd/009:25:440
9500992722,3cyclictest9-21ksoftirqd/008:17:040
9503992621,3cyclictest41-21ksoftirqd/307:16:193
9503992620,4cyclictest41-21ksoftirqd/309:01:523
9501992621,3cyclictest25-21ksoftirqd/112:23:261
9501992620,4cyclictest25-21ksoftirqd/107:32:561
9501992519,4cyclictest25-21ksoftirqd/111:39:591
9500992520,3cyclictest9-21ksoftirqd/008:31:300
9501992419,3cyclictest25-21ksoftirqd/109:31:221
9500992418,4cyclictest9-21ksoftirqd/007:25:040
138491240,0ptp4l401ktimersoftd/312:35:153
9501992015,3cyclictest25-21ksoftirqd/108:12:111
9500991914,3cyclictest9-21ksoftirqd/010:30:180
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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