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2026-09-22 - 11:54
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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 rackdslot3.osadl.org (updated Tue Sep 22, 2026 00:45:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
139491224161,51phc2sys0-21swapper/319:08:113
243812204170,22sleep10-21swapper/119:09:561
242632203169,23sleep20-21swapper/219:08:242
242612201168,22sleep00-21swapper/019:08:220
2475821800,6sleep02468199cyclictest23:40:010
1394918564,11phc2sys0-21swapper/319:10:003
2438828263,11sleep20-21swapper/219:10:012
24684996218,10cyclictest41-21ksoftirqd/320:55:003
24684995717,4cyclictest41-21ksoftirqd/322:15:263
24683995626,4cyclictest33-21ksoftirqd/223:55:172
24683995625,3cyclictest33-21ksoftirqd/220:45:272
24683995425,4cyclictest33-21ksoftirqd/221:05:192
24683995425,4cyclictest33-21ksoftirqd/221:05:192
24683995424,3cyclictest33-21ksoftirqd/221:20:002
24683995424,3cyclictest33-21ksoftirqd/200:10:002
24683995422,5cyclictest33-21ksoftirqd/221:55:172
24683995422,3cyclictest33-21ksoftirqd/221:40:162
24683995328,7cyclictest33-21ksoftirqd/221:45:132
24683995320,4cyclictest33-21ksoftirqd/219:35:152
139391530,1ptp4l401ktimersoftd/300:01:143
139391530,1ptp4l401ktimersoftd/300:01:133
2468499528,11cyclictest41-21ksoftirqd/321:10:173
24684995220,10cyclictest41-21ksoftirqd/323:20:143
24683995122,4cyclictest33-21ksoftirqd/223:40:232
24683995120,3cyclictest33-21ksoftirqd/223:15:012
24684995020,7cyclictest41-21ksoftirqd/322:55:143
24683995020,3cyclictest33-21ksoftirqd/223:35:022
24684994919,4cyclictest41-21ksoftirqd/322:45:233
24684994919,3cyclictest41-21ksoftirqd/321:05:203
24684994919,3cyclictest41-21ksoftirqd/321:05:203
24683994919,3cyclictest33-21ksoftirqd/222:55:162
24683994919,3cyclictest33-21ksoftirqd/220:40:222
24683994918,3cyclictest33-21ksoftirqd/221:25:192
24683994918,3cyclictest33-21ksoftirqd/200:15:202
164202490,2sleep00-21swapper/023:20:230
24683994818,3cyclictest33-21ksoftirqd/223:15:242
24684994717,3cyclictest41-21ksoftirqd/321:20:203
24683994720,4cyclictest33-21ksoftirqd/200:23:462
24683994719,3cyclictest33-21ksoftirqd/222:55:002
24683994718,3cyclictest33-21ksoftirqd/223:25:222
24683994718,3cyclictest33-21ksoftirqd/221:10:222
24683994715,2cyclictest33-21ksoftirqd/222:45:202
24684994634,4cyclictest41-21ksoftirqd/320:30:283
24684994627,7cyclictest41-21ksoftirqd/322:04:593
24683994619,4cyclictest33-21ksoftirqd/220:30:212
24683994618,3cyclictest33-21ksoftirqd/219:55:172
24683994615,3cyclictest33-21ksoftirqd/223:35:252
24683994614,4cyclictest33-21ksoftirqd/220:00:182
24684994538,3cyclictest15332-21sh21:05:003
2468499451,3cyclictest121rcu_preempt19:45:243
24684994512,2cyclictest121rcu_preempt00:15:283
24684994510,5cyclictest41-21ksoftirqd/320:15:273
24683994521,3cyclictest33-21ksoftirqd/221:05:012
2468499449,4cyclictest41-21ksoftirqd/321:35:253
24684994412,8cyclictest41-21ksoftirqd/321:19:263
24683994418,4cyclictest33-21ksoftirqd/222:15:162
24683994415,3cyclictest33-21ksoftirqd/222:35:242
24683994414,3cyclictest33-21ksoftirqd/219:15:252
24683994414,3cyclictest33-21ksoftirqd/219:15:252
2468399441,3cyclictest121rcu_preempt19:50:152
24683994411,3cyclictest33-21ksoftirqd/220:10:262
139391440,0ptp4l401ktimersoftd/319:30:023
2468499433,3cyclictest121rcu_preempt19:25:273
24683994315,3cyclictest33-21ksoftirqd/222:40:232
24683994313,3cyclictest33-21ksoftirqd/220:25:192
139391430,0ptp4l401ktimersoftd/300:35:133
2468499424,3cyclictest121rcu_preempt23:34:433
2468499423,9cyclictest41-21ksoftirqd/323:50:233
24684994226,4cyclictest41-21ksoftirqd/323:05:183
24683994215,3cyclictest33-21ksoftirqd/223:20:182
24683994213,4cyclictest33-21ksoftirqd/221:50:122
24683994210,3cyclictest33-21ksoftirqd/221:35:002
2468399420,4cyclictest5576-21/usr/sbin/munin23:00:212
139391420,0ptp4l401ktimersoftd/300:32:393
2468499418,6cyclictest41-21ksoftirqd/300:20:173
2468499415,3cyclictest121rcu_preempt00:06:123
24684994125,4cyclictest41-21ksoftirqd/323:05:003
24683994136,3cyclictest33-21ksoftirqd/200:35:002
2468399413,3cyclictest121rcu_preempt19:30:012
24683994110,4cyclictest33-21ksoftirqd/200:35:222
2468199411,3cyclictest121rcu_preempt19:45:170
57898400,5rtkit-daemon15444-21find00:25:251
2468499409,9cyclictest41-21ksoftirqd/320:40:143
2468499406,4cyclictest121rcu_preempt20:36:513
2468499406,3cyclictest121rcu_preempt19:22:383
24684994036,2cyclictest41-21ksoftirqd/300:00:013
2468499403,3cyclictest121rcu_preempt23:15:003
2468499401,2cyclictest121rcu_preempt23:41:333
2468399408,3cyclictest33-21ksoftirqd/219:45:202
24683994026,3cyclictest33-21ksoftirqd/200:25:172
24683994024,3cyclictest33-21ksoftirqd/219:45:002
24683994014,4cyclictest33-21ksoftirqd/200:10:282
2468399400,3cyclictest121rcu_preempt23:45:142
299502390,25sleep233-21ksoftirqd/219:20:142
2468499396,9cyclictest41-21ksoftirqd/320:55:123
2468499395,3cyclictest41-21ksoftirqd/322:27:563
2468499395,2cyclictest121rcu_preempt19:51:033
24684993934,3cyclictest41-21ksoftirqd/320:05:003
2468499393,3cyclictest121rcu_preempt22:10:243
24684993933,3cyclictest41-21ksoftirqd/320:15:013
24684993933,3cyclictest41-21ksoftirqd/320:00:003
24684993932,4cyclictest20862-21cron20:09:593
2468499391,4cyclictest41-21ksoftirqd/300:14:323
2468499390,2cyclictest121rcu_preempt20:45:263
2468499390,10cyclictest41-21ksoftirqd/323:35:133
24683993927,3cyclictest33-21ksoftirqd/223:55:002
24683993924,4cyclictest33-21ksoftirqd/220:35:162
24682993934,3cyclictest25751-21cron22:34:591
2468499385,2cyclictest121rcu_preempt22:50:333
2468499384,3cyclictest121rcu_preempt22:42:253
2468499384,3cyclictest121rcu_preempt21:30:003
2468499383,9cyclictest41-21ksoftirqd/322:22:083
2468399387,3cyclictest33-21ksoftirqd/222:10:232
24683993833,3cyclictest33-21ksoftirqd/221:40:012
24683993824,4cyclictest33-21ksoftirqd/222:00:142
2468399381,4cyclictest33-21ksoftirqd/200:03:032
2468399381,4cyclictest33-21ksoftirqd/200:03:032
2468399381,3cyclictest121rcu_preempt21:24:592
24683993810,4cyclictest33-21ksoftirqd/222:05:232
2468499373,2cyclictest121rcu_preempt19:15:573
2468499373,2cyclictest121rcu_preempt19:15:573
24684993732,3cyclictest41-21ksoftirqd/323:25:143
24684993732,3cyclictest41-21ksoftirqd/322:05:243
24684993732,3cyclictest41-21ksoftirqd/321:40:193
24684993732,3cyclictest41-21ksoftirqd/321:34:593
24684993732,3cyclictest41-21ksoftirqd/319:40:003
24684993731,3cyclictest41-21ksoftirqd/322:30:213
24684993730,3cyclictest41-21ksoftirqd/323:45:193
24684993723,4cyclictest41-21ksoftirqd/320:25:253
2468499371,3cyclictest121rcu_preempt22:39:593
2468399379,3cyclictest33-21ksoftirqd/220:15:132
24683993733,2cyclictest33-21ksoftirqd/223:10:002
24683993733,2cyclictest33-21ksoftirqd/220:55:142
24683993732,3cyclictest33-21ksoftirqd/219:25:142
24683993730,5cyclictest33-21ksoftirqd/222:20:382
24683993718,16cyclictest33-21ksoftirqd/220:54:592
24682993732,3cyclictest25-21ksoftirqd/122:40:101
24682993732,3cyclictest25-21ksoftirqd/120:35:001
24682993732,3cyclictest25-21ksoftirqd/119:52:591
24682993730,4cyclictest25-21ksoftirqd/122:06:211
24681993731,4cyclictest9-21ksoftirqd/022:40:460
139391370,0ptp4l401ktimersoftd/323:15:123
24684993632,2cyclictest41-21ksoftirqd/320:25:003
24684993632,2cyclictest41-21ksoftirqd/300:25:153
24684993631,3cyclictest41-21ksoftirqd/321:55:193
24684993630,3cyclictest41-21ksoftirqd/319:45:003
2468499362,3cyclictest121rcu_preempt21:50:263
24683993631,3cyclictest33-21ksoftirqd/222:32:222
24683993630,3cyclictest33-21ksoftirqd/222:25:142
24683993622,3cyclictest33-21ksoftirqd/220:20:212
24683993622,12cyclictest33-21ksoftirqd/220:05:032
24682993630,4cyclictest25-21ksoftirqd/120:41:161
24682993629,5cyclictest25-21ksoftirqd/122:00:361
24684993530,3cyclictest41-21ksoftirqd/321:45:223
24682993530,3cyclictest9147-21wc22:00:011
24682993529,4cyclictest25-21ksoftirqd/123:42:491
24682993529,4cyclictest25-21ksoftirqd/123:33:431
24681993529,4cyclictest9-21ksoftirqd/020:50:500
24681993529,4cyclictest9-21ksoftirqd/000:15:470
24682993429,3cyclictest25-21ksoftirqd/119:34:591
24682993428,4cyclictest25-21ksoftirqd/123:45:461
24682993428,4cyclictest25-21ksoftirqd/123:16:461
24682993427,4cyclictest25-21ksoftirqd/121:15:011
24681993428,4cyclictest9-21ksoftirqd/023:53:370
24681993428,4cyclictest9-21ksoftirqd/020:39:520
24681993428,4cyclictest9-21ksoftirqd/020:21:580
24681993428,4cyclictest9-21ksoftirqd/020:17:170
24681993428,4cyclictest9-21ksoftirqd/019:13:590
2468199341,31cyclictest6759-21cron21:55:000
24682993328,3cyclictest25-21ksoftirqd/123:52:561
24682993328,3cyclictest25-21ksoftirqd/123:03:291
24682993328,3cyclictest25-21ksoftirqd/100:35:571
24682993327,4cyclictest25-21ksoftirqd/122:27:491
24682993327,4cyclictest25-21ksoftirqd/100:24:141
24681993328,3cyclictest9-21ksoftirqd/021:30:160
24681993328,3cyclictest9-21ksoftirqd/000:39:280
24681993328,3cyclictest9-21ksoftirqd/000:30:180
24681993327,4cyclictest9-21ksoftirqd/022:05:330
24681993327,4cyclictest9-21ksoftirqd/019:52:050
24682993228,3cyclictest25-21ksoftirqd/120:45:011
24682993227,3cyclictest25-21ksoftirqd/122:38:471
24682993227,3cyclictest25-21ksoftirqd/120:11:051
24682993227,3cyclictest25-21ksoftirqd/119:28:591
24682993226,4cyclictest25-21ksoftirqd/123:23:201
24682993226,4cyclictest25-21ksoftirqd/120:29:221
24681993227,3cyclictest9-21ksoftirqd/022:48:210
24681993226,4cyclictest9-21ksoftirqd/021:40:300
24681993226,4cyclictest9-21ksoftirqd/021:18:020
24681993226,4cyclictest9-21ksoftirqd/000:13:550
24681993225,4cyclictest9-21ksoftirqd/020:44:570
24681993218,5cyclictest9-21ksoftirqd/020:56:360
24682993126,3cyclictest25-21ksoftirqd/122:22:391
24682993126,3cyclictest25-21ksoftirqd/121:35:561
24682993126,3cyclictest25-21ksoftirqd/120:37:381
24682993125,4cyclictest25-21ksoftirqd/123:29:131
24682993125,4cyclictest25-21ksoftirqd/119:11:541
24682993125,4cyclictest25-21ksoftirqd/100:10:381
24681993127,3cyclictest9-21ksoftirqd/023:29:300
24681993126,3cyclictest9-21ksoftirqd/022:54:580
24681993126,3cyclictest9-21ksoftirqd/020:05:000
24681993126,3cyclictest9-21ksoftirqd/019:40:010
24681993126,3cyclictest9-21ksoftirqd/019:15:510
24681993126,3cyclictest9-21ksoftirqd/019:15:510
24681993125,4cyclictest9-21ksoftirqd/023:47:350
24681993125,4cyclictest9-21ksoftirqd/023:12:530
24681993125,4cyclictest9-21ksoftirqd/023:04:580
24681993125,4cyclictest9-21ksoftirqd/020:28:450
24681993125,4cyclictest9-21ksoftirqd/019:24:250
24682993025,3cyclictest25-21ksoftirqd/123:10:101
24682993025,3cyclictest25-21ksoftirqd/123:09:561
24682993025,3cyclictest25-21ksoftirqd/122:55:001
24682993025,3cyclictest25-21ksoftirqd/121:15:111
24682993024,4cyclictest25-21ksoftirqd/121:54:111
24682993024,4cyclictest25-21ksoftirqd/120:06:581
24682993024,4cyclictest25-21ksoftirqd/100:05:361
24682993023,4cyclictest25-21ksoftirqd/121:40:171
24681993025,3cyclictest9-21ksoftirqd/022:35:180
24681993025,3cyclictest9-21ksoftirqd/021:55:110
24681993025,3cyclictest9-21ksoftirqd/000:04:430
24681993025,3cyclictest9-21ksoftirqd/000:04:430
24681993024,4cyclictest9-21ksoftirqd/022:34:460
24681993024,4cyclictest9-21ksoftirqd/019:40:070
24681993024,3cyclictest9-21ksoftirqd/023:19:530
24681993023,4cyclictest9-21ksoftirqd/021:06:040
24681993023,4cyclictest9-21ksoftirqd/021:06:040
24682992924,3cyclictest25-21ksoftirqd/121:47:251
24682992924,3cyclictest25-21ksoftirqd/121:09:451
24682992924,3cyclictest25-21ksoftirqd/121:09:451
24682992924,3cyclictest25-21ksoftirqd/119:20:101
24682992923,4cyclictest25-21ksoftirqd/122:14:121
24682992923,4cyclictest25-21ksoftirqd/121:27:351
24682992923,4cyclictest25-21ksoftirqd/121:21:411
24682992923,4cyclictest25-21ksoftirqd/100:02:441
24682992923,4cyclictest25-21ksoftirqd/100:02:431
2468299290,2cyclictest121rcu_preempt20:56:371
24681992924,3cyclictest9-21ksoftirqd/000:08:120
24681992923,4cyclictest9-21ksoftirqd/023:58:490
24681992923,4cyclictest9-21ksoftirqd/021:38:450
24681992923,4cyclictest9-21ksoftirqd/021:03:380
24682992824,3cyclictest25-21ksoftirqd/122:20:011
24682992823,3cyclictest25-21ksoftirqd/122:46:151
24682992823,3cyclictest25-21ksoftirqd/120:01:291
24682992822,4cyclictest25-21ksoftirqd/123:35:161
24682992822,4cyclictest25-21ksoftirqd/121:32:231
24682992822,4cyclictest25-21ksoftirqd/121:02:031
24682992822,4cyclictest25-21ksoftirqd/120:53:291
24682992822,4cyclictest25-21ksoftirqd/120:24:411
24682992822,4cyclictest25-21ksoftirqd/120:19:551
24681992823,3cyclictest9-21ksoftirqd/021:45:460
24681992823,3cyclictest9-21ksoftirqd/020:30:370
24681992822,4cyclictest9-21ksoftirqd/000:26:330
24682992722,3cyclictest25-21ksoftirqd/122:55:511
24682992722,3cyclictest25-21ksoftirqd/119:57:061
24682992721,4cyclictest25-21ksoftirqd/119:37:261
24681992722,3cyclictest9-21ksoftirqd/022:03:480
24681992722,3cyclictest9-21ksoftirqd/019:32:010
24681992722,3cyclictest9-21ksoftirqd/019:26:140
24681992721,4cyclictest9-21ksoftirqd/022:58:030
24681992721,4cyclictest9-21ksoftirqd/020:46:580
24681992721,4cyclictest9-21ksoftirqd/020:10:560
24682992620,4cyclictest25-21ksoftirqd/119:41:361
24682992620,4cyclictest25-21ksoftirqd/100:31:571
24681992621,3cyclictest9-21ksoftirqd/023:32:430
24681992621,3cyclictest9-21ksoftirqd/022:26:090
24681992620,4cyclictest9-21ksoftirqd/000:21:000
24681992519,4cyclictest9-21ksoftirqd/021:28:530
114522519,2sleep125-21ksoftirqd/123:55:261
24682992419,3cyclictest25-21ksoftirqd/119:45:131
24682992418,4cyclictest25-21ksoftirqd/119:17:371
24682992418,4cyclictest25-21ksoftirqd/119:17:371
24681992419,3cyclictest9-21ksoftirqd/020:06:380
24681992418,4cyclictest9-21ksoftirqd/021:23:160
24681992417,4cyclictest9-21ksoftirqd/019:55:100
24681992318,3cyclictest9-21ksoftirqd/022:17:150
24681992317,4cyclictest9-21ksoftirqd/023:43:220
24682992217,3cyclictest25-21ksoftirqd/100:19:591
24681992217,3cyclictest9-21ksoftirqd/023:09:080
24681992216,4cyclictest9-21ksoftirqd/021:10:050
24681992016,2cyclictest9-21ksoftirqd/022:10:140
24681991914,3cyclictest19500-21if_err_enp1s022:20:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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