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2026-08-21 - 08:57
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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 Fri Aug 21, 2026 00:45:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
138591206173,22phc2sys0-21swapper/319:08:293
184762204170,22sleep10-21swapper/119:07:061
183492203171,21sleep20-21swapper/219:05:342
164812199165,23sleep00-21swapper/019:05:080
138491570,1ptp4l401ktimersoftd/321:20:253
138491570,1ptp4l401ktimersoftd/300:26:133
50798540,2rtkit-daemon506-21rtkit-daemon22:50:380
138491540,0ptp4l401ktimersoftd/322:25:503
286112510,4sleep0101ktimersoftd/022:44:590
18993994729,15cyclictest25-21ksoftirqd/122:11:591
18994994541,3cyclictest33-21ksoftirqd/223:20:012
18994994431,10cyclictest33-21ksoftirqd/220:55:132
138491440,0ptp4l401ktimersoftd/320:15:053
18993994324,4cyclictest25-21ksoftirqd/123:27:581
1899399430,41cyclictest0-21swapper/100:35:341
138491430,0ptp4l401ktimersoftd/321:15:293
138491430,0ptp4l401ktimersoftd/300:09:283
18994994237,3cyclictest33-21ksoftirqd/219:40:002
18994994213,3cyclictest33-21ksoftirqd/200:30:192
1899399410,39cyclictest0-21swapper/119:50:531
1899499404,6cyclictest33-21ksoftirqd/223:20:182
1899499396,4cyclictest33-21ksoftirqd/222:00:282
1899499395,5cyclictest33-21ksoftirqd/221:05:242
1899499394,2cyclictest121rcu_preempt21:15:262
1899499391,7cyclictest33-21ksoftirqd/222:20:202
18994993910,7cyclictest33-21ksoftirqd/219:45:122
18995993834,2cyclictest41-21ksoftirqd/321:00:013
1899499389,4cyclictest33-21ksoftirqd/220:45:192
1899499388,4cyclictest33-21ksoftirqd/222:45:192
1899499384,3cyclictest33-21ksoftirqd/200:05:172
1899499383,8cyclictest33-21ksoftirqd/220:19:592
18994993833,3cyclictest33-21ksoftirqd/222:15:122
18994993833,3cyclictest33-21ksoftirqd/220:30:142
18994993833,3cyclictest33-21ksoftirqd/200:20:192
18994993832,3cyclictest33-21ksoftirqd/223:35:012
18994993810,4cyclictest33-21ksoftirqd/219:30:002
1899399380,36cyclictest0-21swapper/119:12:031
138491380,0ptp4l401ktimersoftd/322:00:003
138491380,0ptp4l401ktimersoftd/321:30:183
138491380,0ptp4l401ktimersoftd/320:10:233
138491380,0ptp4l401ktimersoftd/319:29:433
18995993730,4cyclictest41-21ksoftirqd/323:07:063
1899499377,3cyclictest33-21ksoftirqd/223:30:012
1899499375,5cyclictest33-21ksoftirqd/221:25:162
1899499375,5cyclictest33-21ksoftirqd/200:00:172
18994993732,3cyclictest33-21ksoftirqd/222:50:162
18994993732,3cyclictest33-21ksoftirqd/221:40:002
18994993732,3cyclictest33-21ksoftirqd/220:40:162
18994993731,4cyclictest33-21ksoftirqd/222:09:202
18994993731,3cyclictest33-21ksoftirqd/222:00:012
1899399370,35cyclictest0-21swapper/119:20:431
1899399370,1cyclictest0-21swapper/122:06:221
18992993731,4cyclictest9-21ksoftirqd/000:35:120
50798360,2rtkit-daemon506-21rtkit-daemon20:56:530
18995993630,4cyclictest41-21ksoftirqd/323:48:493
18995993630,4cyclictest41-21ksoftirqd/322:15:033
18995993630,4cyclictest41-21ksoftirqd/321:14:453
18995993630,4cyclictest41-21ksoftirqd/320:43:163
18995993630,4cyclictest41-21ksoftirqd/319:43:343
1899499368,4cyclictest33-21ksoftirqd/220:05:242
1899499364,3cyclictest33-21ksoftirqd/223:55:142
1899499364,2cyclictest121rcu_preempt23:45:242
18994993632,2cyclictest33-21ksoftirqd/223:40:242
18994993631,3cyclictest33-21ksoftirqd/222:30:142
18994993631,3cyclictest33-21ksoftirqd/222:10:172
18994993630,4cyclictest33-21ksoftirqd/221:46:172
18994993630,4cyclictest33-21ksoftirqd/221:46:162
18994993630,4cyclictest33-21ksoftirqd/220:28:512
18994993630,4cyclictest33-21ksoftirqd/220:00:462
18994993630,4cyclictest33-21ksoftirqd/219:40:432
18994993630,4cyclictest33-21ksoftirqd/200:16:252
18994993630,3cyclictest33-21ksoftirqd/222:44:592
18994993630,3cyclictest33-21ksoftirqd/220:20:132
18994993629,4cyclictest33-21ksoftirqd/223:15:002
18994993629,4cyclictest33-21ksoftirqd/219:50:472
18994993625,9cyclictest33-21ksoftirqd/222:38:462
1899499361,6cyclictest33-21ksoftirqd/223:00:132
18994993610,4cyclictest33-21ksoftirqd/200:35:142
18993993630,4cyclictest25-21ksoftirqd/123:15:461
18993993630,4cyclictest25-21ksoftirqd/120:39:001
1899399360,35cyclictest0-21swapper/121:51:331
138491360,0ptp4l401ktimersoftd/323:15:213
138491360,0ptp4l401ktimersoftd/322:05:153
18995993529,4cyclictest41-21ksoftirqd/321:51:563
18995993529,4cyclictest41-21ksoftirqd/320:52:473
18995993528,5cyclictest41-21ksoftirqd/320:34:323
1899499355,2cyclictest121rcu_preempt21:10:132
1899499354,5cyclictest33-21ksoftirqd/221:40:162
1899499353,4cyclictest33-21ksoftirqd/200:10:142
18994993531,2cyclictest33-21ksoftirqd/221:30:152
18994993531,2cyclictest33-21ksoftirqd/221:00:132
18994993531,2cyclictest33-21ksoftirqd/219:25:002
18994993531,2cyclictest33-21ksoftirqd/200:30:002
18994993530,3cyclictest33-21ksoftirqd/222:27:492
18994993530,3cyclictest33-21ksoftirqd/220:35:132
18994993530,3cyclictest33-21ksoftirqd/219:55:142
18994993530,3cyclictest33-21ksoftirqd/219:35:002
18994993530,3cyclictest33-21ksoftirqd/219:10:122
18994993529,4cyclictest33-21ksoftirqd/223:53:502
18994993529,3cyclictest33-21ksoftirqd/221:54:592
18994993529,3cyclictest33-21ksoftirqd/220:10:122
1899499352,2cyclictest121rcu_preempt19:15:142
1899499351,2cyclictest33-21ksoftirqd/220:50:222
1899499350,5cyclictest33-21ksoftirqd/223:00:002
18993993529,4cyclictest25-21ksoftirqd/123:41:451
18993993529,4cyclictest25-21ksoftirqd/121:42:101
18993993529,4cyclictest25-21ksoftirqd/121:30:351
18993993529,4cyclictest25-21ksoftirqd/121:18:521
18993993529,4cyclictest25-21ksoftirqd/119:58:481
18993993529,4cyclictest25-21ksoftirqd/119:45:101
18993993529,4cyclictest25-21ksoftirqd/100:15:111
18993993529,4cyclictest25-21ksoftirqd/100:06:201
18993993528,5cyclictest25-21ksoftirqd/123:37:041
18993993528,5cyclictest25-21ksoftirqd/120:54:211
18992993530,3cyclictest26218-21cron21:35:000
18992993529,4cyclictest9-21ksoftirqd/023:30:590
18992993529,4cyclictest9-21ksoftirqd/023:09:350
18992993529,4cyclictest9-21ksoftirqd/022:11:300
18992993529,4cyclictest9-21ksoftirqd/021:42:460
18992993529,4cyclictest9-21ksoftirqd/021:27:220
18992993529,4cyclictest9-21ksoftirqd/000:02:340
138491350,0ptp4l401ktimersoftd/321:25:273
18995993428,4cyclictest41-21ksoftirqd/322:02:543
18995993428,4cyclictest41-21ksoftirqd/321:01:203
18995993428,4cyclictest41-21ksoftirqd/319:53:173
18995993428,4cyclictest41-21ksoftirqd/319:48:403
18995993428,4cyclictest41-21ksoftirqd/319:24:493
18995993428,4cyclictest41-21ksoftirqd/319:19:113
18995993427,4cyclictest41-21ksoftirqd/322:55:103
18994993427,4cyclictest33-21ksoftirqd/223:06:442
1899499341,3cyclictest33-21ksoftirqd/223:35:242
1899499340,3cyclictest121rcu_preempt21:20:172
18993993429,3cyclictest25-21ksoftirqd/123:20:091
18993993428,4cyclictest25-21ksoftirqd/123:53:091
18993993428,4cyclictest25-21ksoftirqd/121:35:561
18993993428,4cyclictest25-21ksoftirqd/120:44:141
18993993428,4cyclictest25-21ksoftirqd/100:26:271
18993993427,4cyclictest25-21ksoftirqd/120:59:061
18992993429,3cyclictest30873-21latency_hist22:49:590
18992993428,4cyclictest9-21ksoftirqd/023:59:490
18992993428,4cyclictest9-21ksoftirqd/020:20:380
18992993428,4cyclictest9-21ksoftirqd/020:18:370
18992993428,4cyclictest9-21ksoftirqd/019:40:380
18992993428,4cyclictest9-21ksoftirqd/000:22:170
138491340,0ptp4l401ktimersoftd/320:25:093
18995993327,4cyclictest41-21ksoftirqd/322:43:033
18995993327,4cyclictest41-21ksoftirqd/322:22:213
18995993327,4cyclictest41-21ksoftirqd/319:55:413
18995993327,4cyclictest41-21ksoftirqd/300:37:123
18993993328,3cyclictest25-21ksoftirqd/122:40:311
18993993328,3cyclictest25-21ksoftirqd/121:08:111
18993993327,4cyclictest25-21ksoftirqd/123:56:351
18993993327,4cyclictest25-21ksoftirqd/122:36:021
18993993327,4cyclictest25-21ksoftirqd/122:31:081
18993993327,4cyclictest25-21ksoftirqd/122:25:011
18993993327,4cyclictest25-21ksoftirqd/121:29:351
18993993327,4cyclictest25-21ksoftirqd/121:03:351
18993993327,4cyclictest25-21ksoftirqd/100:24:141
18993993327,4cyclictest25-21ksoftirqd/100:12:501
18992993328,3cyclictest9-21ksoftirqd/021:15:130
18992993328,3cyclictest9-21ksoftirqd/020:47:060
18992993327,4cyclictest9-21ksoftirqd/022:55:160
18992993327,4cyclictest9-21ksoftirqd/021:59:070
18992993327,4cyclictest9-21ksoftirqd/021:37:170
18992993327,4cyclictest9-21ksoftirqd/020:32:220
18992993327,4cyclictest9-21ksoftirqd/019:36:530
18992993327,4cyclictest9-21ksoftirqd/019:18:080
18992993327,4cyclictest9-21ksoftirqd/019:13:090
138491330,0ptp4l401ktimersoftd/323:58:413
138491330,0ptp4l401ktimersoftd/321:09:563
18995993227,3cyclictest41-21ksoftirqd/323:42:323
18995993226,4cyclictest41-21ksoftirqd/323:21:253
18993993227,3cyclictest25-21ksoftirqd/122:58:091
18993993226,4cyclictest25-21ksoftirqd/123:33:191
18993993226,4cyclictest25-21ksoftirqd/123:12:501
18993993226,4cyclictest25-21ksoftirqd/122:02:201
18993993226,4cyclictest25-21ksoftirqd/121:47:571
18993993226,4cyclictest25-21ksoftirqd/121:47:571
18993993226,4cyclictest25-21ksoftirqd/120:47:551
18993993226,4cyclictest25-21ksoftirqd/119:34:581
18992993227,3cyclictest9-21ksoftirqd/022:20:110
18992993227,3cyclictest9-21ksoftirqd/020:08:390
18992993226,4cyclictest9-21ksoftirqd/023:01:320
18992993226,4cyclictest9-21ksoftirqd/021:00:380
18992993226,4cyclictest9-21ksoftirqd/020:41:200
18992993226,4cyclictest9-21ksoftirqd/019:58:110
18992993226,4cyclictest9-21ksoftirqd/019:47:520
18992993226,4cyclictest9-21ksoftirqd/000:07:400
138491320,28ptp4l35792irq/125-enp1s0-21:37:163
138491320,0ptp4l401ktimersoftd/323:38:453
138491320,0ptp4l401ktimersoftd/322:38:123
138491320,0ptp4l401ktimersoftd/322:11:053
138491320,0ptp4l401ktimersoftd/300:30:203
18995993126,3cyclictest41-21ksoftirqd/300:20:143
18995993125,4cyclictest41-21ksoftirqd/300:11:203
18995993124,4cyclictest41-21ksoftirqd/322:30:113
18993993126,3cyclictest25-21ksoftirqd/121:13:101
18993993125,4cyclictest25-21ksoftirqd/123:08:401
18993993125,4cyclictest25-21ksoftirqd/122:26:431
18993993125,4cyclictest25-21ksoftirqd/120:22:321
18993993125,4cyclictest25-21ksoftirqd/120:16:141
18993993125,4cyclictest25-21ksoftirqd/119:39:271
18993993125,4cyclictest25-21ksoftirqd/100:00:521
18992993125,4cyclictest9-21ksoftirqd/023:43:010
18992993125,4cyclictest9-21ksoftirqd/020:00:360
138491310,0ptp4l401ktimersoftd/322:49:293
138491310,0ptp4l401ktimersoftd/321:46:293
138491310,0ptp4l401ktimersoftd/321:46:293
18995993025,3cyclictest41-21ksoftirqd/323:12:273
18995993025,3cyclictest41-21ksoftirqd/320:24:313
18995993025,3cyclictest41-21ksoftirqd/300:04:183
18995993024,4cyclictest41-21ksoftirqd/319:34:323
18993993025,3cyclictest25-21ksoftirqd/120:30:551
18993993025,3cyclictest25-21ksoftirqd/120:13:131
18993993025,3cyclictest25-21ksoftirqd/119:42:171
18993993024,4cyclictest25-21ksoftirqd/122:18:581
18993993024,4cyclictest25-21ksoftirqd/119:19:371
18993993023,4cyclictest25-21ksoftirqd/120:26:011
18992993025,3cyclictest9-21ksoftirqd/022:30:400
18992993025,3cyclictest9-21ksoftirqd/022:02:360
18992993025,3cyclictest9-21ksoftirqd/000:32:150
18992993024,4cyclictest9-21ksoftirqd/021:53:160
18992993024,4cyclictest9-21ksoftirqd/021:47:320
18992993024,4cyclictest9-21ksoftirqd/021:47:310
18992993024,4cyclictest9-21ksoftirqd/021:12:290
18992993024,4cyclictest9-21ksoftirqd/000:15:430
138491300,0ptp4l401ktimersoftd/323:00:243
138491300,0ptp4l401ktimersoftd/320:37:173
138491300,0ptp4l401ktimersoftd/320:00:153
18995992924,3cyclictest41-21ksoftirqd/321:42:043
18995992924,3cyclictest41-21ksoftirqd/319:37:043
18995992923,3cyclictest41-21ksoftirqd/322:50:513
18993992924,3cyclictest25-21ksoftirqd/123:00:091
18993992923,4cyclictest25-21ksoftirqd/122:48:271
18993992923,4cyclictest25-21ksoftirqd/121:24:261
18993992923,4cyclictest25-21ksoftirqd/120:08:481
18993992923,4cyclictest25-21ksoftirqd/100:34:381
18992992924,3cyclictest9-21ksoftirqd/022:35:290
18992992924,3cyclictest9-21ksoftirqd/022:05:130
18992992923,4cyclictest9-21ksoftirqd/021:20:230
18995992823,3cyclictest41-21ksoftirqd/320:46:463
18995992823,3cyclictest41-21ksoftirqd/319:10:493
18995992823,3cyclictest41-21ksoftirqd/300:16:443
18995992822,4cyclictest41-21ksoftirqd/323:27:593
18993992823,3cyclictest25-21ksoftirqd/119:28:471
18993992822,4cyclictest25-21ksoftirqd/121:56:391
18993992822,4cyclictest25-21ksoftirqd/120:02:571
18992992823,3cyclictest9-21ksoftirqd/023:49:220
18992992823,3cyclictest9-21ksoftirqd/023:10:470
18992992822,4cyclictest9-21ksoftirqd/023:53:240
138491280,0ptp4l401ktimersoftd/323:54:243
18993992722,3cyclictest25-21ksoftirqd/122:51:261
18993992721,4cyclictest25-21ksoftirqd/123:48:071
18992992722,3cyclictest9-21ksoftirqd/020:52:290
18992992722,3cyclictest9-21ksoftirqd/020:39:530
18992992722,3cyclictest9-21ksoftirqd/000:10:490
18992992721,4cyclictest9-21ksoftirqd/022:18:280
18992992721,4cyclictest9-21ksoftirqd/000:26:050
18992992721,3cyclictest9-21ksoftirqd/023:16:250
18995992621,3cyclictest41-21ksoftirqd/323:33:403
18995992620,4cyclictest41-21ksoftirqd/320:05:123
18992992621,3cyclictest9-21ksoftirqd/020:29:130
18992992620,4cyclictest9-21ksoftirqd/023:22:070
18992992620,4cyclictest9-21ksoftirqd/020:10:100
18992992519,4cyclictest9-21ksoftirqd/023:27:050
18992992419,3cyclictest9-21ksoftirqd/019:50:360
18992992419,3cyclictest9-21ksoftirqd/019:33:350
18992992418,4cyclictest9-21ksoftirqd/022:29:480
18992992217,3cyclictest9-21ksoftirqd/021:07:350
18992992217,3cyclictest9-21ksoftirqd/019:25:430
18992992114,4cyclictest26379-21sh19:25:000
18992992015,3cyclictest9-21ksoftirqd/023:36:540
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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