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2026-04-07 - 22:17
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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 rackdslot3.osadl.org (updated Tue Apr 07, 2026 12:45:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
139491203169,22phc2sys0-21swapper/307:07:363
164962201168,22sleep10-21swapper/107:06:511
164922200166,23sleep20-21swapper/207:06:492
167022198165,22sleep00-21swapper/007:09:280
1393911250,1ptp4l20638-21/usr/sbin/munin08:25:253
17039996633,4cyclictest33-21ksoftirqd/207:40:002
17039996329,4cyclictest33-21ksoftirqd/211:25:192
17039996229,4cyclictest33-21ksoftirqd/209:45:192
17039996228,11cyclictest33-21ksoftirqd/210:05:262
17039996128,4cyclictest33-21ksoftirqd/209:40:132
17039996127,11cyclictest33-21ksoftirqd/209:35:142
17039996123,11cyclictest33-21ksoftirqd/211:20:182
17039996030,5cyclictest33-21ksoftirqd/212:20:242
17039996029,4cyclictest33-21ksoftirqd/209:15:262
17039996028,4cyclictest33-21ksoftirqd/207:50:132
17039996027,6cyclictest33-21ksoftirqd/212:10:252
17039996027,3cyclictest33-21ksoftirqd/208:25:172
17039996024,4cyclictest33-21ksoftirqd/208:55:132
17039996024,10cyclictest33-21ksoftirqd/212:35:152
17039995930,3cyclictest33-21ksoftirqd/208:15:272
17039995929,3cyclictest33-21ksoftirqd/210:25:122
17039995928,4cyclictest33-21ksoftirqd/210:55:272
17039995928,4cyclictest33-21ksoftirqd/208:45:152
17039995921,10cyclictest33-21ksoftirqd/209:50:142
17039995829,3cyclictest33-21ksoftirqd/211:35:232
17039995827,4cyclictest33-21ksoftirqd/210:20:172
17039995826,6cyclictest33-21ksoftirqd/208:50:192
17039995825,6cyclictest33-21ksoftirqd/207:20:252
17039995824,5cyclictest33-21ksoftirqd/210:30:012
17039995822,4cyclictest33-21ksoftirqd/208:35:272
17039995726,4cyclictest33-21ksoftirqd/210:45:152
17039995724,4cyclictest33-21ksoftirqd/210:00:132
17039995723,10cyclictest33-21ksoftirqd/211:55:142
17039995722,3cyclictest33-21ksoftirqd/209:55:182
17039995627,4cyclictest33-21ksoftirqd/208:40:222
17039995626,6cyclictest33-21ksoftirqd/208:00:172
17039995624,5cyclictest33-21ksoftirqd/207:15:182
17039995624,3cyclictest33-21ksoftirqd/211:30:162
17039995624,10cyclictest33-21ksoftirqd/211:50:262
17039995619,10cyclictest33-21ksoftirqd/212:15:172
17039995618,4cyclictest33-21ksoftirqd/209:07:232
17039995526,3cyclictest33-21ksoftirqd/209:00:132
17039995523,6cyclictest33-21ksoftirqd/208:30:142
17039995523,4cyclictest33-21ksoftirqd/209:30:232
17039995519,10cyclictest33-21ksoftirqd/207:25:162
17039995422,6cyclictest33-21ksoftirqd/207:45:142
17039995412,3cyclictest33-21ksoftirqd/212:30:182
1703999525,6cyclictest33-21ksoftirqd/209:25:152
17039995224,6cyclictest33-21ksoftirqd/209:10:162
17039995224,3cyclictest33-21ksoftirqd/207:30:242
1703999516,7cyclictest33-21ksoftirqd/211:40:162
1703999516,6cyclictest33-21ksoftirqd/207:40:132
17039995120,5cyclictest33-21ksoftirqd/208:05:152
139391510,1ptp4l401ktimersoftd/307:31:043
61012500,1sleep16104-21grep11:15:221
1703999505,6cyclictest33-21ksoftirqd/212:05:232
1703999505,6cyclictest33-21ksoftirqd/211:05:182
1703999501,9cyclictest33-21ksoftirqd/211:15:192
17037995019,4cyclictest9-21ksoftirqd/012:15:010
234782490,1sleep10-21swapper/108:30:141
1703999496,7cyclictest33-21ksoftirqd/207:55:142
1703999494,6cyclictest33-21ksoftirqd/207:10:232
1703999492,9cyclictest33-21ksoftirqd/210:15:142
1703999491,8cyclictest33-21ksoftirqd/210:10:162
17039994917,4cyclictest33-21ksoftirqd/208:10:132
1703999484,5cyclictest33-21ksoftirqd/211:45:162
17039994829,10cyclictest33-21ksoftirqd/208:20:152
1703999481,9cyclictest33-21ksoftirqd/211:10:102
1703999476,3cyclictest33-21ksoftirqd/212:25:172
1703999475,9cyclictest33-21ksoftirqd/212:05:002
17039994712,4cyclictest33-21ksoftirqd/210:35:132
1703999463,8cyclictest33-21ksoftirqd/210:40:222
1703999462,8cyclictest33-21ksoftirqd/210:54:402
1703999461,7cyclictest33-21ksoftirqd/211:00:212
1703999450,6cyclictest33-21ksoftirqd/209:20:112
17037994528,5cyclictest9-21ksoftirqd/012:10:010
1703799445,3cyclictest9-21ksoftirqd/010:10:130
17037994410,3cyclictest9-21ksoftirqd/009:40:000
139391440,0ptp4l401ktimersoftd/308:34:383
17037994311,7cyclictest9-21ksoftirqd/011:20:010
1703799426,6cyclictest9-21ksoftirqd/010:35:200
1703799424,3cyclictest9-21ksoftirqd/011:45:160
17037994213,10cyclictest9-21ksoftirqd/009:30:000
1703799421,2cyclictest121rcu_preempt07:40:250
139391420,3ptp4l401ktimersoftd/310:25:363
139391420,34ptp4l0-21swapper/307:10:013
17040994135,3cyclictest15581-21cron08:15:003
1703799418,4cyclictest9-21ksoftirqd/010:10:000
1703799414,3cyclictest9-21ksoftirqd/010:20:250
1703799414,3cyclictest9-21ksoftirqd/008:30:230
17037994125,4cyclictest9-21ksoftirqd/011:30:000
1703799410,2cyclictest121rcu_preempt10:30:130
139391410,2ptp4l401ktimersoftd/310:12:473
139391410,0ptp4l401ktimersoftd/311:00:153
1703799404,3cyclictest9-21ksoftirqd/011:05:260
1703799403,2cyclictest9-21ksoftirqd/011:20:240
1703799401,5cyclictest9-21ksoftirqd/012:00:270
17037994012,9cyclictest9-21ksoftirqd/010:55:010
1703899391,36cyclictest2373-21cron11:09:591
1703799396,4cyclictest9-21ksoftirqd/008:05:240
1703799395,6cyclictest9-21ksoftirqd/007:30:140
1703799395,6cyclictest9-21ksoftirqd/007:10:140
1703799394,4cyclictest9-21ksoftirqd/011:30:190
1703799394,3cyclictest9-21ksoftirqd/011:55:240
17037993933,4cyclictest9-21ksoftirqd/010:05:000
1703799391,9cyclictest9-21ksoftirqd/012:30:130
1703799391,7cyclictest9-21ksoftirqd/010:40:260
139391390,1ptp4l0-21swapper/309:11:553
139391390,0ptp4l401ktimersoftd/307:15:153
17040993831,4cyclictest41-21ksoftirqd/309:55:233
1703799386,3cyclictest9-21ksoftirqd/008:55:270
1703799385,6cyclictest9-21ksoftirqd/011:35:200
1703799385,4cyclictest9-21ksoftirqd/011:45:010
1703799384,6cyclictest9-21ksoftirqd/008:50:130
1703799384,3cyclictest9-21ksoftirqd/010:50:010
1703799384,2cyclictest121rcu_preempt07:20:220
1703799383,3cyclictest121rcu_preempt11:50:190
1703799383,3cyclictest121rcu_preempt10:25:170
17037993833,3cyclictest9-21ksoftirqd/012:20:190
1703799383,2cyclictest121rcu_preempt09:45:140
1703799383,2cyclictest121rcu_preempt09:40:220
17037993832,3cyclictest9-21ksoftirqd/008:40:000
1703799381,3cyclictest121rcu_preempt09:30:210
1703799381,2cyclictest121rcu_preempt08:45:250
17040993731,4cyclictest41-21ksoftirqd/308:53:113
17038993733,2cyclictest21847-21phc2sys08:25:221
17038993731,4cyclictest25-21ksoftirqd/108:43:061
1703799375,4cyclictest9-21ksoftirqd/012:16:340
1703799374,7cyclictest9-21ksoftirqd/009:20:170
1703799374,3cyclictest121rcu_preempt09:55:250
1703799374,3cyclictest121rcu_preempt07:25:170
1703799373,7cyclictest9-21ksoftirqd/007:45:220
1703799373,3cyclictest9-21ksoftirqd/010:55:140
17037993733,2cyclictest9-21ksoftirqd/008:00:010
1703799373,2cyclictest121rcu_preempt08:00:180
1703799373,2cyclictest121rcu_preempt07:15:230
1703799372,2cyclictest121rcu_preempt09:05:130
1703799371,2cyclictest121rcu_preempt12:25:260
17037993710,4cyclictest9-21ksoftirqd/007:35:170
17040993631,3cyclictest41-21ksoftirqd/310:00:183
17040993630,3cyclictest41-21ksoftirqd/312:35:013
17038993630,4cyclictest25-21ksoftirqd/112:16:511
17038993630,4cyclictest25-21ksoftirqd/112:08:581
17038993630,4cyclictest25-21ksoftirqd/112:00:151
17038993630,4cyclictest25-21ksoftirqd/109:15:271
17038993615,18cyclictest6547-21df10:10:131
1703799364,2cyclictest121rcu_preempt09:50:130
1703799363,2cyclictest121rcu_preempt09:00:250
17037993630,3cyclictest9-21ksoftirqd/008:25:130
1703799362,2cyclictest121rcu_preempt08:20:190
1703799362,2cyclictest121rcu_preempt08:10:190
1703799361,3cyclictest121rcu_preempt08:15:180
17040993530,3cyclictest41-21ksoftirqd/311:45:193
17040993530,3cyclictest41-21ksoftirqd/310:50:113
17040993530,3cyclictest41-21ksoftirqd/308:45:203
17040993530,3cyclictest41-21ksoftirqd/308:10:003
17040993529,4cyclictest41-21ksoftirqd/312:08:593
17040993529,4cyclictest41-21ksoftirqd/310:58:513
17040993529,4cyclictest41-21ksoftirqd/310:21:043
17040993529,4cyclictest41-21ksoftirqd/309:32:063
17040993529,3cyclictest41-21ksoftirqd/312:02:593
17038993529,4cyclictest25-21ksoftirqd/111:23:491
17038993529,4cyclictest25-21ksoftirqd/110:15:081
17038993529,4cyclictest25-21ksoftirqd/107:37:401
17038993528,5cyclictest25-21ksoftirqd/111:04:591
1703799357,3cyclictest9-21ksoftirqd/010:15:230
1703799354,6cyclictest121rcu_preempt11:10:160
1703799353,3cyclictest121rcu_preempt11:00:140
1703799353,2cyclictest121rcu_preempt08:40:200
17037993515,10cyclictest9-21ksoftirqd/009:15:180
1703799351,2cyclictest121rcu_preempt09:10:200
134491350,2getstats0-21swapper/311:56:203
17040993429,3cyclictest41-21ksoftirqd/312:40:003
17040993428,4cyclictest41-21ksoftirqd/312:19:263
17040993428,4cyclictest41-21ksoftirqd/311:19:333
17040993428,4cyclictest41-21ksoftirqd/309:44:263
17040993428,4cyclictest41-21ksoftirqd/309:26:373
17040993428,4cyclictest41-21ksoftirqd/309:18:503
17040993428,4cyclictest41-21ksoftirqd/308:43:243
17040993427,4cyclictest41-21ksoftirqd/310:34:523
17038993428,4cyclictest25-21ksoftirqd/110:08:391
17038993428,4cyclictest25-21ksoftirqd/110:01:381
17038993428,4cyclictest25-21ksoftirqd/108:59:391
17038993428,4cyclictest25-21ksoftirqd/108:14:021
17038993428,4cyclictest25-21ksoftirqd/107:32:391
17038993411,3cyclictest21014-21cat10:40:131
1703799344,4cyclictest9-21ksoftirqd/012:35:180
17037993429,3cyclictest9-21ksoftirqd/007:55:010
17040993329,3cyclictest41-21ksoftirqd/309:05:163
17040993328,3cyclictest41-21ksoftirqd/307:25:013
17040993327,4cyclictest41-21ksoftirqd/309:35:513
17040993327,4cyclictest41-21ksoftirqd/307:37:293
17040993327,3cyclictest41-21ksoftirqd/311:20:183
17040993327,3cyclictest41-21ksoftirqd/311:10:163
17040993327,3cyclictest41-21ksoftirqd/310:05:383
17040993321,9cyclictest41-21ksoftirqd/309:00:243
17038993328,3cyclictest25-21ksoftirqd/108:45:121
17038993327,4cyclictest25-21ksoftirqd/111:54:161
17038993327,4cyclictest25-21ksoftirqd/111:47:261
17038993327,4cyclictest25-21ksoftirqd/111:13:371
17038993327,4cyclictest25-21ksoftirqd/110:22:511
17038993327,4cyclictest25-21ksoftirqd/109:56:311
17038993327,4cyclictest25-21ksoftirqd/108:19:151
17038993327,3cyclictest17068-21apt-get07:10:101
139391330,0ptp4l401ktimersoftd/307:54:093
17040993227,3cyclictest41-21ksoftirqd/310:40:003
17040993227,3cyclictest41-21ksoftirqd/310:15:113
17040993227,3cyclictest41-21ksoftirqd/308:15:193
17040993226,4cyclictest41-21ksoftirqd/309:23:523
17040993226,4cyclictest41-21ksoftirqd/308:21:263
17040993226,3cyclictest41-21ksoftirqd/307:40:193
17038993226,4cyclictest25-21ksoftirqd/112:12:181
17038993226,4cyclictest25-21ksoftirqd/110:48:101
17038993226,4cyclictest25-21ksoftirqd/110:25:201
17038993226,4cyclictest25-21ksoftirqd/109:26:271
17038993226,4cyclictest25-21ksoftirqd/109:22:461
17038993226,4cyclictest25-21ksoftirqd/107:55:281
17038993226,4cyclictest25-21ksoftirqd/107:17:211
17038993225,4cyclictest10485-21fschecks_count09:10:151
17038993214,15cyclictest25674-21df08:35:141
139391320,0ptp4l401ktimersoftd/312:14:273
139391320,0ptp4l401ktimersoftd/309:50:193
17040993127,2cyclictest391rcuc/309:45:193
17040993126,3cyclictest41-21ksoftirqd/310:50:013
17040993124,4cyclictest41-21ksoftirqd/312:25:133
17038993126,3cyclictest25-21ksoftirqd/108:05:121
17038993125,4cyclictest25-21ksoftirqd/111:57:341
17038993125,4cyclictest25-21ksoftirqd/110:35:121
17038993125,4cyclictest25-21ksoftirqd/110:33:461
17038993113,3cyclictest9232-21hddtemp_smartct08:00:161
17038993110,3cyclictest16875-21sed11:40:011
139391310,9ptp4l0-21swapper/308:57:313
139391310,0ptp4l401ktimersoftd/311:38:453
17040993026,3cyclictest41-21ksoftirqd/307:55:163
17040993026,2cyclictest41-21ksoftirqd/311:09:593
17040993025,3cyclictest41-21ksoftirqd/311:40:183
17040993025,3cyclictest41-21ksoftirqd/311:25:113
17040993024,4cyclictest41-21ksoftirqd/310:41:103
17040993023,5cyclictest41-21ksoftirqd/308:00:193
17038993025,3cyclictest25-21ksoftirqd/111:40:111
17038993025,3cyclictest25-21ksoftirqd/111:29:501
17038993025,3cyclictest25-21ksoftirqd/109:38:521
17038993024,4cyclictest25-21ksoftirqd/112:22:041
17038993024,4cyclictest25-21ksoftirqd/110:51:431
17038993010,4cyclictest1776-21switchtime08:50:251
139391300,1ptp4l401ktimersoftd/307:29:073
139391300,0ptp4l401ktimersoftd/311:30:153
17040992923,4cyclictest41-21ksoftirqd/307:48:443
17038992924,3cyclictest25-21ksoftirqd/112:36:371
17038992923,4cyclictest25-21ksoftirqd/112:25:541
17038992923,4cyclictest25-21ksoftirqd/109:00:311
17038992923,4cyclictest25-21ksoftirqd/107:52:561
1703899288,3cyclictest12168-21cpu11:30:121
17038992823,3cyclictest25-21ksoftirqd/110:57:091
17038992823,3cyclictest25-21ksoftirqd/109:32:081
17038992823,3cyclictest25-21ksoftirqd/109:05:381
17038992823,3cyclictest25-21ksoftirqd/107:45:131
17038992823,3cyclictest25-21ksoftirqd/107:26:471
17038992822,4cyclictest25-21ksoftirqd/109:53:591
17038992810,2cyclictest9205-21iostat_ios12:30:181
1703899279,3cyclictest25770-21mailstats09:40:241
1703899278,3cyclictest28887-21latency_hist09:50:011
17038992721,4cyclictest25-21ksoftirqd/107:21:351
17040992620,3cyclictest41-21ksoftirqd/308:35:193
17038992620,4cyclictest25-21ksoftirqd/108:22:281
17040992520,3cyclictest41-21ksoftirqd/311:50:193
17038992519,4cyclictest25-21ksoftirqd/107:43:491
17040992414,9cyclictest41-21ksoftirqd/312:20:243
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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