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2025-12-22 - 06:06
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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 Mon Dec 22, 2025 00:45:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
145802207172,23sleep30-21swapper/319:06:103
147192205170,23sleep10-21swapper/119:07:531
148382200168,21sleep00-21swapper/019:09:260
145842199167,21sleep20-21swapper/219:06:142
1385918262,11phc2sys0-21swapper/319:10:003
154972750,3sleep20-21swapper/223:30:142
138491670,1ptp4l401ktimersoftd/320:08:243
138491660,1ptp4l401ktimersoftd/321:12:123
179532610,2sleep30-21swapper/323:35:173
178192610,2sleep20-21swapper/222:30:012
138491500,0ptp4l401ktimersoftd/300:30:543
1535199499,2cyclictest121rcu_preempt23:40:241
15351994915,7cyclictest25-21ksoftirqd/120:15:001
138491490,1ptp4l401ktimersoftd/323:28:243
138491490,1ptp4l401ktimersoftd/323:28:243
116272490,1sleep10-21swapper/100:25:251
28122480,1sleep02811-21/usr/sbin/munin19:50:120
28122480,1sleep02811-21/usr/sbin/munin19:50:120
15351994718,4cyclictest25-21ksoftirqd/121:10:141
15351994716,4cyclictest25-21ksoftirqd/123:05:211
1534999471,43cyclictest5611-21chrt00:15:170
133832470,2sleep00-21swapper/021:15:170
1535199450,10cyclictest25-21ksoftirqd/119:55:141
1535399441,4cyclictest30799-21/usr/sbin/munin20:45:182
1535199446,2cyclictest25-21ksoftirqd/120:30:151
15351994415,4cyclictest25-21ksoftirqd/122:35:231
1535199438,4cyclictest25-21ksoftirqd/119:40:181
15351994315,7cyclictest25-21ksoftirqd/120:25:161
15351994314,8cyclictest25-21ksoftirqd/122:55:231
15351994314,7cyclictest25-21ksoftirqd/121:25:231
15351994312,4cyclictest25-21ksoftirqd/119:45:221
15354994223,4cyclictest41-21ksoftirqd/322:16:343
15353994236,3cyclictest33-21ksoftirqd/219:15:012
15353994235,4cyclictest36092irq/128-enp1s0-22:55:292
15351994214,3cyclictest25-21ksoftirqd/100:15:191
15351994211,3cyclictest25-21ksoftirqd/119:15:151
138491420,1ptp4l401ktimersoftd/322:42:053
1535199417,4cyclictest25-21ksoftirqd/121:30:231
1535199416,4cyclictest25-21ksoftirqd/123:15:251
1535199416,2cyclictest25-21ksoftirqd/122:45:161
1535199415,4cyclictest25-21ksoftirqd/100:05:171
1535199414,2cyclictest25-21ksoftirqd/123:00:171
15351994114,4cyclictest25-21ksoftirqd/119:35:191
15351994113,3cyclictest25-21ksoftirqd/120:55:241
138491410,0ptp4l401ktimersoftd/300:28:583
15353994035,2cyclictest33-21ksoftirqd/223:20:002
1535199408,4cyclictest25-21ksoftirqd/120:40:201
1535199406,4cyclictest25-21ksoftirqd/123:25:131
1535199406,4cyclictest25-21ksoftirqd/123:25:131
1535199404,3cyclictest121rcu_preempt23:45:241
1535199404,3cyclictest121rcu_preempt19:20:171
15351994035,3cyclictest25-21ksoftirqd/100:05:001
1535199403,3cyclictest121rcu_preempt00:20:281
1535199402,7cyclictest25-21ksoftirqd/119:30:251
1535199400,7cyclictest25-21ksoftirqd/122:50:121
138491400,1ptp4l401ktimersoftd/320:17:533
15354993925,11cyclictest41-21ksoftirqd/322:55:453
1535199399,9cyclictest25-21ksoftirqd/123:10:211
1535199399,4cyclictest25-21ksoftirqd/121:51:481
1535199397,6cyclictest25-21ksoftirqd/121:55:221
1535199396,6cyclictest25-21ksoftirqd/100:10:191
1535199395,3cyclictest25-21ksoftirqd/122:10:211
1535199394,4cyclictest25-21ksoftirqd/119:10:261
1535199394,3cyclictest25-21ksoftirqd/120:45:181
1535199393,4cyclictest25-21ksoftirqd/100:30:141
15351993934,3cyclictest25-21ksoftirqd/123:35:191
15351993934,3cyclictest25-21ksoftirqd/121:00:221
15351993927,3cyclictest25-21ksoftirqd/122:05:201
15351993912,6cyclictest25-21ksoftirqd/120:35:301
1535199390,7cyclictest25-21ksoftirqd/120:05:221
15353993833,3cyclictest33-21ksoftirqd/221:55:002
15353993832,3cyclictest33-21ksoftirqd/222:15:012
1535199387,6cyclictest25-21ksoftirqd/123:23:501
1535199385,3cyclictest121rcu_preempt23:30:161
1535199384,3cyclictest121rcu_preempt22:15:231
15351993832,3cyclictest25-21ksoftirqd/100:00:011
15351993814,4cyclictest25-21ksoftirqd/121:15:141
15351993812,8cyclictest25-21ksoftirqd/121:05:201
138491380,0ptp4l401ktimersoftd/319:25:313
15354993715,19cyclictest41-21ksoftirqd/320:30:003
15353993732,3cyclictest33-21ksoftirqd/223:10:252
15353993732,3cyclictest19937-21cron21:30:002
15353993731,4cyclictest33-21ksoftirqd/200:00:192
15353993723,13cyclictest33-21ksoftirqd/221:05:282
1535199378,4cyclictest25-21ksoftirqd/121:44:211
1535199378,3cyclictest25-21ksoftirqd/121:37:431
1535199376,3cyclictest121rcu_preempt23:50:171
1535199375,3cyclictest121rcu_preempt00:35:261
1535199375,2cyclictest121rcu_preempt20:20:141
1535199375,2cyclictest121rcu_preempt20:20:141
1535199374,7cyclictest25-21ksoftirqd/122:40:251
1535199372,7cyclictest25-21ksoftirqd/120:00:141
15349993732,3cyclictest9-21ksoftirqd/022:50:120
15354993630,4cyclictest41-21ksoftirqd/321:08:223
15353993632,2cyclictest33-21ksoftirqd/221:40:152
15353993631,3cyclictest33-21ksoftirqd/222:40:132
15353993631,3cyclictest33-21ksoftirqd/222:20:012
15353993631,3cyclictest33-21ksoftirqd/221:10:282
15353993631,3cyclictest33-21ksoftirqd/200:15:012
15353993630,4cyclictest33-21ksoftirqd/223:05:112
15353993630,4cyclictest33-21ksoftirqd/220:58:502
15353993630,3cyclictest33-21ksoftirqd/222:05:152
15353993629,4cyclictest33-21ksoftirqd/200:10:002
1535199369,3cyclictest25-21ksoftirqd/122:26:291
1535199365,3cyclictest121rcu_preempt21:20:121
1535199365,3cyclictest121rcu_preempt21:20:121
1535199365,3cyclictest121rcu_preempt19:50:161
1535199365,3cyclictest121rcu_preempt19:50:161
1535199364,7cyclictest121rcu_preempt21:45:211
15351993632,2cyclictest25-21ksoftirqd/120:20:001
15351993630,4cyclictest25-21ksoftirqd/120:53:281
15351993630,4cyclictest25-21ksoftirqd/120:53:281
1535199362,2cyclictest121rcu_preempt19:25:151
15349993631,3cyclictest9-21ksoftirqd/020:55:000
15349993631,3cyclictest9-21ksoftirqd/020:55:000
15354993530,3cyclictest41-21ksoftirqd/322:49:433
15354993529,4cyclictest41-21ksoftirqd/323:32:003
15354993529,4cyclictest41-21ksoftirqd/322:23:243
15354993529,4cyclictest41-21ksoftirqd/321:55:413
1535399354,3cyclictest121rcu_preempt19:50:192
1535399354,3cyclictest121rcu_preempt19:50:192
15353993531,3cyclictest33-21ksoftirqd/200:35:192
15353993531,2cyclictest33-21ksoftirqd/219:50:002
15353993530,3cyclictest33-21ksoftirqd/223:50:132
15353993530,3cyclictest33-21ksoftirqd/222:30:112
15353993530,3cyclictest33-21ksoftirqd/221:00:242
15353993530,3cyclictest33-21ksoftirqd/220:05:012
15353993530,2cyclictest33-21ksoftirqd/221:50:002
15353993529,4cyclictest33-21ksoftirqd/200:20:532
15353993529,3cyclictest33-21ksoftirqd/222:20:002
15353993529,3cyclictest33-21ksoftirqd/221:35:182
15353993529,3cyclictest33-21ksoftirqd/221:30:122
15353993529,3cyclictest20341-21wc22:35:122
15353993528,4cyclictest33-21ksoftirqd/223:41:252
15353993523,9cyclictest33-21ksoftirqd/200:15:292
1535399350,4cyclictest15150-21gpgv20:15:012
1535199357,3cyclictest25-21ksoftirqd/122:24:531
15349993530,3cyclictest9-21ksoftirqd/021:03:450
15349993529,4cyclictest9-21ksoftirqd/021:47:340
15349993529,4cyclictest9-21ksoftirqd/020:11:230
15354993429,3cyclictest41-21ksoftirqd/319:40:103
15354993428,4cyclictest41-21ksoftirqd/323:55:063
15354993428,4cyclictest41-21ksoftirqd/321:20:343
15354993428,4cyclictest41-21ksoftirqd/321:20:343
15354993428,4cyclictest41-21ksoftirqd/320:03:473
15354993428,4cyclictest41-21ksoftirqd/319:48:303
15354993428,4cyclictest41-21ksoftirqd/319:34:023
15354993428,4cyclictest41-21ksoftirqd/319:23:203
15353993429,3cyclictest33-21ksoftirqd/222:50:012
15353993429,3cyclictest33-21ksoftirqd/220:30:132
15353993429,3cyclictest33-21ksoftirqd/219:45:012
15353993428,4cyclictest33-21ksoftirqd/220:06:242
15353993428,3cyclictest33-21ksoftirqd/223:20:072
15353993428,3cyclictest33-21ksoftirqd/220:25:132
15353993427,3cyclictest33-21ksoftirqd/223:50:002
15353993423,9cyclictest33-21ksoftirqd/200:25:132
1535199344,3cyclictest121rcu_preempt22:00:211
15351993428,4cyclictest25-21ksoftirqd/122:30:121
15349993429,3cyclictest9-21ksoftirqd/023:33:010
15349993429,3cyclictest9-21ksoftirqd/020:25:000
15349993429,3cyclictest9-21ksoftirqd/020:25:000
15349993428,4cyclictest9-21ksoftirqd/023:11:020
15349993428,4cyclictest9-21ksoftirqd/022:43:380
15349993428,4cyclictest9-21ksoftirqd/020:16:080
15349993428,4cyclictest9-21ksoftirqd/020:02:240
15349993428,4cyclictest9-21ksoftirqd/000:26:490
15349993428,3cyclictest9-21ksoftirqd/021:35:200
138491340,0ptp4l401ktimersoftd/321:20:013
15354993328,3cyclictest41-21ksoftirqd/321:42:083
15354993327,4cyclictest41-21ksoftirqd/323:44:153
15354993327,4cyclictest41-21ksoftirqd/322:26:133
15354993327,4cyclictest41-21ksoftirqd/320:32:273
15353993330,2cyclictest33-21ksoftirqd/219:40:002
15353993328,3cyclictest33-21ksoftirqd/222:50:182
15353993328,3cyclictest33-21ksoftirqd/220:45:012
15353993327,4cyclictest33-21ksoftirqd/223:58:262
15353993327,4cyclictest33-21ksoftirqd/223:39:182
15353993327,3cyclictest33-21ksoftirqd/220:20:132
15353993327,3cyclictest33-21ksoftirqd/220:20:132
15349993328,3cyclictest9-21ksoftirqd/021:32:220
15349993328,3cyclictest9-21ksoftirqd/020:28:550
15349993328,3cyclictest9-21ksoftirqd/019:17:030
15349993327,4cyclictest9-21ksoftirqd/023:48:050
15349993327,4cyclictest9-21ksoftirqd/021:44:020
15349993327,4cyclictest9-21ksoftirqd/020:59:120
15349993327,4cyclictest9-21ksoftirqd/020:43:320
15349993326,4cyclictest9-21ksoftirqd/019:45:400
138491330,0ptp4l401ktimersoftd/322:30:183
15354993227,3cyclictest41-21ksoftirqd/321:35:143
15354993226,4cyclictest41-21ksoftirqd/321:31:453
15353993227,3cyclictest33-21ksoftirqd/223:25:312
15353993227,3cyclictest33-21ksoftirqd/223:25:312
15353993227,3cyclictest33-21ksoftirqd/222:00:002
15353993226,4cyclictest33-21ksoftirqd/220:36:242
15353993226,4cyclictest33-21ksoftirqd/219:33:532
15353993226,4cyclictest33-21ksoftirqd/219:20:002
15353993226,3cyclictest33-21ksoftirqd/220:50:202
15353993226,3cyclictest33-21ksoftirqd/220:50:202
15353993225,4cyclictest33-21ksoftirqd/221:17:352
15349993227,3cyclictest9-21ksoftirqd/022:33:330
15349993227,3cyclictest9-21ksoftirqd/020:32:090
15349993227,3cyclictest9-21ksoftirqd/019:37:080
15349993227,3cyclictest9-21ksoftirqd/000:39:540
15349993227,3cyclictest9-21ksoftirqd/000:14:210
15349993226,4cyclictest9-21ksoftirqd/022:01:340
15349993226,4cyclictest9-21ksoftirqd/021:11:170
15349993226,4cyclictest9-21ksoftirqd/019:34:390
15349993226,3cyclictest9-21ksoftirqd/022:20:010
1534999320,2cyclictest121rcu_preempt23:56:130
138491320,0ptp4l401ktimersoftd/323:04:543
15354993126,3cyclictest41-21ksoftirqd/322:37:243
15354993126,3cyclictest41-21ksoftirqd/320:56:273
15354993126,3cyclictest41-21ksoftirqd/320:23:063
15354993126,3cyclictest41-21ksoftirqd/320:23:063
15354993126,3cyclictest41-21ksoftirqd/320:14:183
15354993126,3cyclictest41-21ksoftirqd/300:01:133
15354993125,4cyclictest41-21ksoftirqd/321:28:033
15354993125,4cyclictest41-21ksoftirqd/320:45:473
15354993125,4cyclictest41-21ksoftirqd/300:19:533
15354993125,4cyclictest41-21ksoftirqd/300:11:153
15353993127,2cyclictest33-21ksoftirqd/222:00:192
15353993127,2cyclictest33-21ksoftirqd/220:15:192
15349993126,3cyclictest9-21ksoftirqd/023:09:220
15349993125,4cyclictest9-21ksoftirqd/023:38:470
15349993125,4cyclictest9-21ksoftirqd/023:22:460
15349993125,4cyclictest9-21ksoftirqd/021:51:550
15349993125,4cyclictest9-21ksoftirqd/021:20:500
15349993125,4cyclictest9-21ksoftirqd/021:20:500
15349993125,4cyclictest9-21ksoftirqd/020:39:310
15349993125,4cyclictest9-21ksoftirqd/019:56:300
15349993125,4cyclictest9-21ksoftirqd/000:33:140
138491310,0ptp4l401ktimersoftd/323:54:503
138491310,0ptp4l401ktimersoftd/323:45:193
138491310,0ptp4l401ktimersoftd/323:21:183
15354993025,3cyclictest41-21ksoftirqd/323:05:313
15354993025,3cyclictest41-21ksoftirqd/319:16:133
15353993025,3cyclictest33-21ksoftirqd/219:55:162
15353993025,3cyclictest33-21ksoftirqd/200:31:442
15353993024,4cyclictest33-21ksoftirqd/219:25:002
15349993025,3cyclictest9-21ksoftirqd/023:29:280
15349993025,3cyclictest9-21ksoftirqd/023:29:280
15349993025,3cyclictest9-21ksoftirqd/023:00:310
15349993024,4cyclictest9-21ksoftirqd/022:21:320
1534999302,25cyclictest31441-21proc_pri20:45:240
138491300,1ptp4l401ktimersoftd/319:50:143
138491300,1ptp4l401ktimersoftd/319:50:143
138491300,0ptp4l401ktimersoftd/320:51:433
138491300,0ptp4l401ktimersoftd/320:51:433
15354992924,3cyclictest41-21ksoftirqd/323:12:243
15354992924,3cyclictest41-21ksoftirqd/322:13:303
15354992924,3cyclictest41-21ksoftirqd/320:36:253
15354992924,3cyclictest41-21ksoftirqd/300:37:323
15354992924,3cyclictest41-21ksoftirqd/300:22:593
15354992923,4cyclictest41-21ksoftirqd/323:19:283
15354992923,4cyclictest41-21ksoftirqd/319:37:193
15354992923,3cyclictest41-21ksoftirqd/321:48:593
15353992924,3cyclictest33-21ksoftirqd/221:20:112
15353992924,3cyclictest33-21ksoftirqd/221:20:112
15353992924,3cyclictest33-21ksoftirqd/219:29:592
15353992922,4cyclictest33-21ksoftirqd/223:03:422
15349992924,3cyclictest9-21ksoftirqd/019:25:110
15349992924,3cyclictest9-21ksoftirqd/000:01:050
15349992923,4cyclictest9-21ksoftirqd/023:44:250
15349992923,4cyclictest9-21ksoftirqd/021:29:080
138491290,0ptp4l401ktimersoftd/321:50:503
15354992822,4cyclictest41-21ksoftirqd/320:42:263
15349992823,3cyclictest9-21ksoftirqd/022:58:580
15349992823,3cyclictest9-21ksoftirqd/022:45:390
15349992823,3cyclictest9-21ksoftirqd/022:39:410
15349992822,4cyclictest9-21ksoftirqd/023:50:340
15349992822,4cyclictest9-21ksoftirqd/019:12:340
138491280,0ptp4l401ktimersoftd/319:57:373
15349992723,3cyclictest9-21ksoftirqd/020:05:260
15349992722,3cyclictest9-21ksoftirqd/000:06:510
15354992620,4cyclictest41-21ksoftirqd/322:01:533
15349992621,3cyclictest9-21ksoftirqd/021:56:490
15354992520,3cyclictest41-21ksoftirqd/322:05:123
15354992520,3cyclictest41-21ksoftirqd/321:01:113
15354992520,3cyclictest41-21ksoftirqd/300:07:513
15354992518,5cyclictest41-21ksoftirqd/322:50:183
15349992521,3cyclictest9-21ksoftirqd/019:41:080
15349992521,2cyclictest9-21ksoftirqd/019:21:470
15349992419,3cyclictest9-21ksoftirqd/022:26:520
15349992419,3cyclictest9-21ksoftirqd/021:05:130
15349992418,4cyclictest9-21ksoftirqd/023:17:400
15349992418,4cyclictest9-21ksoftirqd/022:06:200
15349992318,3cyclictest9-21ksoftirqd/000:23:020
15349992317,4cyclictest9-21ksoftirqd/022:10:460
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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