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2025-12-12 - 11:56
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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 rackdslot4.osadl.org (updated Fri Dec 12, 2025 00:45:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
427791204170,22phc2sys0-21swapper/319:06:593
263202204170,23sleep20-21swapper/219:05:342
266442203169,22sleep00-21swapper/019:09:380
265572201166,23sleep10-21swapper/119:08:301
427791162122,13phc2sys0-21swapper/319:10:013
427291650,1ptp4l401ktimersoftd/319:21:323
427291590,1ptp4l401ktimersoftd/321:26:073
427291580,1ptp4l401ktimersoftd/323:00:173
227432580,2sleep20-21swapper/221:10:182
108242540,5sleep32696999cyclictest19:40:213
427291530,2ptp4l401ktimersoftd/320:41:013
26968995030,3cyclictest33-21ksoftirqd/223:25:002
26968995027,4cyclictest33-21ksoftirqd/222:35:402
26966995018,3cyclictest9-21ksoftirqd/020:35:230
427291490,0ptp4l401ktimersoftd/319:17:373
26968994841,4cyclictest22132-21cron22:15:012
26966994614,6cyclictest9-21ksoftirqd/021:00:290
36998450,2rtkit-daemon0-21swapper/119:57:551
26969994539,3cyclictest11967-21cron21:55:003
26966994512,5cyclictest9-21ksoftirqd/020:25:170
26966994512,4cyclictest9-21ksoftirqd/022:25:000
26968994438,4cyclictest7663-21cron23:54:592
2696699448,3cyclictest9-21ksoftirqd/023:05:160
2696699446,3cyclictest9-21ksoftirqd/021:30:260
2696699445,3cyclictest9-21ksoftirqd/019:20:260
26966994413,6cyclictest9-21ksoftirqd/020:20:160
26966994410,4cyclictest9-21ksoftirqd/022:15:280
427291430,0ptp4l401ktimersoftd/321:20:013
427291430,0ptp4l401ktimersoftd/321:15:213
26969994338,3cyclictest41-21ksoftirqd/321:15:013
26969994331,9cyclictest41-21ksoftirqd/321:30:173
26969994331,10cyclictest41-21ksoftirqd/321:35:263
2696699438,3cyclictest9-21ksoftirqd/020:05:280
2696699434,3cyclictest9-21ksoftirqd/000:10:220
26966994338,3cyclictest9-21ksoftirqd/000:24:590
26966994337,3cyclictest9-21ksoftirqd/022:00:000
26966994313,4cyclictest9-21ksoftirqd/022:29:590
427291420,0ptp4l401ktimersoftd/323:35:473
2696999422,10cyclictest41-21ksoftirqd/322:40:003
2696699428,8cyclictest9-21ksoftirqd/020:05:000
2696699427,6cyclictest9-21ksoftirqd/021:20:240
2696699427,6cyclictest9-21ksoftirqd/020:10:250
2696699425,3cyclictest9-21ksoftirqd/022:05:250
2696699425,3cyclictest9-21ksoftirqd/021:15:290
26966994213,4cyclictest9-21ksoftirqd/020:50:160
26966994212,4cyclictest9-21ksoftirqd/019:40:150
26966994210,4cyclictest9-21ksoftirqd/023:40:190
2696699420,9cyclictest9-21ksoftirqd/000:15:180
427291410,0ptp4l401ktimersoftd/322:53:033
36998410,8rtkit-daemon0-21swapper/120:04:501
26969994135,4cyclictest41-21ksoftirqd/300:26:523
26969994135,4cyclictest41-21ksoftirqd/300:00:133
2696999411,3cyclictest121rcu_preempt22:15:183
26967994135,3cyclictest25-21ksoftirqd/122:20:001
2696699417,3cyclictest9-21ksoftirqd/019:30:180
2696699416,6cyclictest9-21ksoftirqd/021:50:220
2696699416,3cyclictest9-21ksoftirqd/019:25:260
2696699415,7cyclictest9-21ksoftirqd/019:10:140
2696699415,3cyclictest121rcu_preempt23:20:160
2696699415,3cyclictest121rcu_preempt22:10:230
2696699414,4cyclictest9-21ksoftirqd/023:55:300
2696699414,4cyclictest9-21ksoftirqd/023:55:300
26966994136,3cyclictest9-21ksoftirqd/000:30:000
26966994133,4cyclictest9-21ksoftirqd/023:25:160
2696699412,6cyclictest9-21ksoftirqd/023:15:220
26966994112,4cyclictest9-21ksoftirqd/022:03:510
26969994035,3cyclictest41-21ksoftirqd/323:45:003
26969994035,3cyclictest41-21ksoftirqd/323:05:283
26969994035,3cyclictest41-21ksoftirqd/319:45:123
26969994034,4cyclictest41-21ksoftirqd/321:48:473
26969994034,4cyclictest41-21ksoftirqd/320:52:263
26969994034,3cyclictest41-21ksoftirqd/320:30:003
26969994029,10cyclictest41-21ksoftirqd/320:00:263
26968994028,11cyclictest33-21ksoftirqd/222:00:392
26967994034,4cyclictest25-21ksoftirqd/123:04:391
2696699407,6cyclictest9-21ksoftirqd/020:30:230
2696699407,5cyclictest9-21ksoftirqd/020:45:250
2696699406,6cyclictest9-21ksoftirqd/023:35:230
2696699404,4cyclictest121rcu_preempt00:30:180
2696699404,3cyclictest121rcu_preempt19:55:220
26966994035,2cyclictest9-21ksoftirqd/023:00:000
2696699403,3cyclictest9-21ksoftirqd/000:35:220
2696699403,3cyclictest121rcu_preempt23:45:250
2696699401,8cyclictest9-21ksoftirqd/022:30:210
26966994010,4cyclictest9-21ksoftirqd/021:35:150
36998390,8rtkit-daemon0-21swapper/120:19:351
26969993935,2cyclictest41-21ksoftirqd/322:45:003
26969993935,2cyclictest41-21ksoftirqd/321:59:593
26969993934,3cyclictest41-21ksoftirqd/320:59:163
26969993934,3cyclictest41-21ksoftirqd/320:40:003
26969993934,3cyclictest41-21ksoftirqd/319:55:193
26969993934,3cyclictest41-21ksoftirqd/300:20:173
26969993933,4cyclictest41-21ksoftirqd/322:45:553
26969993933,4cyclictest41-21ksoftirqd/320:11:263
26969993933,3cyclictest41-21ksoftirqd/319:50:213
26968993934,3cyclictest20258-21grep00:20:002
26967993933,4cyclictest25-21ksoftirqd/121:17:151
26967993933,3cyclictest25-21ksoftirqd/119:47:281
2696699399,5cyclictest9-21ksoftirqd/020:40:140
2696699397,3cyclictest9-21ksoftirqd/022:50:230
2696699395,3cyclictest121rcu_preempt22:45:160
2696699394,7cyclictest121rcu_preempt21:25:160
2696699394,2cyclictest121rcu_preempt23:50:260
2696699394,2cyclictest121rcu_preempt19:45:170
26966993924,5cyclictest9-21ksoftirqd/019:17:000
2696699391,3cyclictest9-21ksoftirqd/021:10:160
2696699391,3cyclictest121rcu_preempt22:40:210
26966993912,7cyclictest9-21ksoftirqd/021:05:190
427091380,1getstats0-21swapper/300:09:583
36998380,5rtkit-daemon29109-21taskset21:23:151
26969993834,3cyclictest41-21ksoftirqd/322:00:253
26969993834,2cyclictest41-21ksoftirqd/322:15:013
26969993834,2cyclictest41-21ksoftirqd/320:45:313
2696999383,3cyclictest121rcu_preempt22:25:203
26969993833,3cyclictest41-21ksoftirqd/323:49:593
26969993833,3cyclictest41-21ksoftirqd/323:00:013
26969993833,3cyclictest41-21ksoftirqd/300:30:223
2696999381,9cyclictest41-21ksoftirqd/323:55:003
26968993832,4cyclictest33-21ksoftirqd/200:33:102
26967993832,4cyclictest25-21ksoftirqd/123:53:161
26967993832,4cyclictest25-21ksoftirqd/121:43:311
26967993832,4cyclictest25-21ksoftirqd/120:50:131
26967993831,4cyclictest25-21ksoftirqd/123:56:581
26967993831,4cyclictest25-21ksoftirqd/123:56:581
26967993831,4cyclictest25-21ksoftirqd/123:38:201
26967993831,4cyclictest25-21ksoftirqd/120:32:581
2696699386,3cyclictest9-21ksoftirqd/022:35:160
2696699383,3cyclictest121rcu_preempt23:30:160
26966993833,3cyclictest9-21ksoftirqd/023:00:190
26966993833,3cyclictest9-21ksoftirqd/021:40:150
2696699383,2cyclictest121rcu_preempt00:00:240
2696699382,2cyclictest121rcu_preempt23:10:010
2696699382,2cyclictest121rcu_preempt20:15:110
2696699381,5cyclictest9-21ksoftirqd/019:35:140
2696699381,3cyclictest121rcu_preempt00:05:210
26969993732,3cyclictest41-21ksoftirqd/322:30:143
26969993732,3cyclictest41-21ksoftirqd/320:25:003
26969993731,4cyclictest41-21ksoftirqd/319:36:483
26969993731,4cyclictest41-21ksoftirqd/300:16:543
2696999371,3cyclictest121rcu_preempt00:35:323
26968993732,3cyclictest33-21ksoftirqd/223:26:182
26968993732,3cyclictest33-21ksoftirqd/222:25:412
26968993731,4cyclictest33-21ksoftirqd/223:08:442
26968993731,4cyclictest33-21ksoftirqd/222:07:472
26968993731,4cyclictest33-21ksoftirqd/219:26:512
26968993731,4cyclictest33-21ksoftirqd/200:06:372
26968993730,4cyclictest33-21ksoftirqd/221:46:562
26967993732,3cyclictest25-21ksoftirqd/122:53:241
26967993731,4cyclictest25-21ksoftirqd/121:45:121
26967993731,4cyclictest25-21ksoftirqd/120:14:211
26967993731,4cyclictest25-21ksoftirqd/119:28:471
26967993730,4cyclictest25-21ksoftirqd/122:25:441
26967993730,4cyclictest25-21ksoftirqd/122:01:351
2696699374,7cyclictest9-21ksoftirqd/020:55:140
2696699373,3cyclictest121rcu_preempt19:50:230
26969993632,3cyclictest41-21ksoftirqd/323:20:233
26969993632,2cyclictest41-21ksoftirqd/321:05:243
26969993632,2cyclictest41-21ksoftirqd/320:15:153
26969993631,3cyclictest41-21ksoftirqd/322:05:253
26969993631,3cyclictest41-21ksoftirqd/321:45:013
26969993631,3cyclictest41-21ksoftirqd/319:25:133
26969993630,4cyclictest41-21ksoftirqd/323:59:053
26969993630,4cyclictest41-21ksoftirqd/323:59:053
26969993630,4cyclictest41-21ksoftirqd/323:14:403
26969993630,4cyclictest41-21ksoftirqd/300:11:053
26969993630,3cyclictest41-21ksoftirqd/320:30:193
26968993630,4cyclictest33-21ksoftirqd/223:48:532
26968993630,4cyclictest33-21ksoftirqd/223:18:322
26968993630,4cyclictest33-21ksoftirqd/223:11:132
26968993630,4cyclictest33-21ksoftirqd/221:03:152
26968993630,4cyclictest33-21ksoftirqd/220:27:422
26968993630,4cyclictest33-21ksoftirqd/200:26:082
26968993630,3cyclictest29237-21latency_hist19:15:012
26967993631,3cyclictest25-21ksoftirqd/122:15:011
26967993631,3cyclictest25-21ksoftirqd/120:59:101
26967993631,3cyclictest25-21ksoftirqd/100:01:191
26967993630,4cyclictest25-21ksoftirqd/122:36:301
26967993630,4cyclictest25-21ksoftirqd/119:16:361
26967993629,4cyclictest25-21ksoftirqd/122:55:481
36998350,2rtkit-daemon0-21swapper/123:42:231
36998350,2rtkit-daemon0-21swapper/121:37:071
36998350,2rtkit-daemon0-21swapper/120:23:551
26969993531,3cyclictest41-21ksoftirqd/323:35:003
26969993531,3cyclictest41-21ksoftirqd/321:00:213
26969993530,3cyclictest41-21ksoftirqd/323:19:593
26969993530,3cyclictest41-21ksoftirqd/320:06:113
26968993530,3cyclictest33-21ksoftirqd/221:23:522
26968993529,4cyclictest33-21ksoftirqd/222:40:412
26968993529,4cyclictest33-21ksoftirqd/221:37:182
26968993529,4cyclictest33-21ksoftirqd/221:30:042
26968993529,4cyclictest33-21ksoftirqd/220:47:562
26968993529,4cyclictest33-21ksoftirqd/220:13:292
26968993529,4cyclictest33-21ksoftirqd/219:51:152
26968993528,4cyclictest33-21ksoftirqd/220:38:532
26968993527,5cyclictest33-21ksoftirqd/200:20:142
26967993530,3cyclictest25-21ksoftirqd/121:56:311
26967993529,4cyclictest25-21ksoftirqd/121:01:111
26967993529,4cyclictest25-21ksoftirqd/120:43:451
26967993529,4cyclictest25-21ksoftirqd/119:22:501
26969993428,4cyclictest41-21ksoftirqd/323:26:153
26969993428,4cyclictest41-21ksoftirqd/319:33:483
26968993428,4cyclictest33-21ksoftirqd/222:58:052
26968993428,4cyclictest33-21ksoftirqd/220:41:582
26968993428,4cyclictest33-21ksoftirqd/220:23:372
26968993428,4cyclictest33-21ksoftirqd/220:16:052
26968993428,3cyclictest33-21ksoftirqd/222:21:362
26968993428,3cyclictest33-21ksoftirqd/221:40:142
26968993427,4cyclictest33-21ksoftirqd/219:23:112
26967993429,3cyclictest25-21ksoftirqd/122:46:281
26967993428,4cyclictest25-21ksoftirqd/120:35:381
26967993428,4cyclictest25-21ksoftirqd/119:41:111
26967993428,4cyclictest25-21ksoftirqd/100:07:381
26967993427,4cyclictest25-21ksoftirqd/100:20:041
26966993430,2cyclictest9-21ksoftirqd/021:45:150
26969993327,4cyclictest41-21ksoftirqd/322:22:043
26968993328,3cyclictest33-21ksoftirqd/219:46:422
26968993328,3cyclictest33-21ksoftirqd/219:35:522
26968993327,4cyclictest33-21ksoftirqd/223:59:432
26968993327,4cyclictest33-21ksoftirqd/223:59:432
26968993327,4cyclictest33-21ksoftirqd/223:43:442
26968993327,4cyclictest33-21ksoftirqd/220:34:242
26967993328,3cyclictest25-21ksoftirqd/123:31:361
26967993328,3cyclictest16896-21cron19:54:591
26967993327,4cyclictest25-21ksoftirqd/122:31:171
26967993327,4cyclictest25-21ksoftirqd/122:24:111
26967993327,4cyclictest25-21ksoftirqd/121:33:441
26967993327,4cyclictest25-21ksoftirqd/121:28:141
26967993327,4cyclictest25-21ksoftirqd/121:10:091
26967993327,4cyclictest25-21ksoftirqd/119:35:451
26967993327,4cyclictest25-21ksoftirqd/100:37:251
26967993327,3cyclictest25-21ksoftirqd/120:07:231
26967993326,5cyclictest25-21ksoftirqd/100:17:361
26967993326,4cyclictest25-21ksoftirqd/120:45:581
36998320,2rtkit-daemon0-21swapper/123:47:211
26968993227,3cyclictest33-21ksoftirqd/220:06:552
26968993227,3cyclictest33-21ksoftirqd/219:32:332
26968993227,3cyclictest33-21ksoftirqd/219:15:472
26968993227,3cyclictest33-21ksoftirqd/200:02:222
26968993226,4cyclictest33-21ksoftirqd/222:50:552
26968993226,4cyclictest33-21ksoftirqd/221:52:192
26968993226,4cyclictest33-21ksoftirqd/221:08:072
26967993226,4cyclictest25-21ksoftirqd/123:18:351
26967993226,4cyclictest25-21ksoftirqd/119:10:421
26967993225,4cyclictest25-21ksoftirqd/100:30:141
26968993126,3cyclictest33-21ksoftirqd/223:39:522
26968993126,3cyclictest33-21ksoftirqd/222:30:152
26968993126,3cyclictest33-21ksoftirqd/219:56:582
26968993125,4cyclictest33-21ksoftirqd/223:33:192
26968993025,3cyclictest33-21ksoftirqd/221:58:252
26968993025,3cyclictest33-21ksoftirqd/220:55:472
26968993024,4cyclictest33-21ksoftirqd/222:48:032
26968993024,4cyclictest33-21ksoftirqd/200:38:272
26968993024,3cyclictest33-21ksoftirqd/220:03:592
2696899301,26cyclictest12563-21apt-get23:00:152
26967993025,3cyclictest25-21ksoftirqd/123:20:301
26967993025,3cyclictest25-21ksoftirqd/121:51:201
26967993025,3cyclictest25-21ksoftirqd/120:28:111
26967993024,4cyclictest25-21ksoftirqd/123:26:571
26967993024,4cyclictest25-21ksoftirqd/121:05:121
26967993024,4cyclictest25-21ksoftirqd/100:26:581
26968992924,3cyclictest33-21ksoftirqd/222:17:032
26968992923,4cyclictest33-21ksoftirqd/221:19:092
26968992923,4cyclictest33-21ksoftirqd/220:52:412
26967992923,4cyclictest25-21ksoftirqd/123:12:411
26967992923,4cyclictest25-21ksoftirqd/123:07:161
26968992823,3cyclictest33-21ksoftirqd/221:25:512
26967992823,3cyclictest25-21ksoftirqd/122:40:591
26967992823,3cyclictest25-21ksoftirqd/122:09:061
2696899270,26cyclictest0-21swapper/219:40:172
26967992722,3cyclictest25-21ksoftirqd/119:34:501
26968992621,3cyclictest33-21ksoftirqd/200:10:132
26967992418,4cyclictest25-21ksoftirqd/100:12:551
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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