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2026-03-13 - 02:02
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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 Thu Mar 12, 2026 12:45:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
236972203168,23sleep00-21swapper/007:07:080
138591203169,23phc2sys0-21swapper/307:09:033
236942201169,21sleep20-21swapper/207:07:062
237412200168,21sleep10-21swapper/107:07:411
138491800,1ptp4l32096-21diskstats07:25:153
138491660,1ptp4l401ktimersoftd/309:40:153
62272650,6sleep22421699cyclictest12:00:112
24214996424,6cyclictest9-21ksoftirqd/009:50:260
24214996128,6cyclictest9-21ksoftirqd/011:10:010
24214996127,6cyclictest9-21ksoftirqd/011:25:260
24214996123,7cyclictest9-21ksoftirqd/008:25:170
24214996030,8cyclictest9-21ksoftirqd/009:50:000
24214996029,4cyclictest9-21ksoftirqd/011:40:000
24214996027,4cyclictest9-21ksoftirqd/009:25:140
24216995913,4cyclictest33-21ksoftirqd/208:40:232
24214995931,8cyclictest9-21ksoftirqd/009:55:180
24214995928,4cyclictest9-21ksoftirqd/010:20:270
24214995927,5cyclictest9-21ksoftirqd/010:10:180
24214995927,4cyclictest9-21ksoftirqd/011:15:120
24214995926,4cyclictest9-21ksoftirqd/012:30:120
24214995925,6cyclictest9-21ksoftirqd/009:10:270
24214995923,6cyclictest9-21ksoftirqd/010:05:240
2421699589,5cyclictest33-21ksoftirqd/208:45:282
24214995830,4cyclictest9-21ksoftirqd/010:15:240
24214995823,7cyclictest9-21ksoftirqd/012:00:170
24214995823,5cyclictest9-21ksoftirqd/008:20:130
24214995822,7cyclictest9-21ksoftirqd/010:45:130
24214995820,6cyclictest9-21ksoftirqd/009:30:160
24214995728,3cyclictest9-21ksoftirqd/011:20:180
24214995726,6cyclictest9-21ksoftirqd/011:00:120
24214995726,5cyclictest9-21ksoftirqd/012:15:150
24214995726,4cyclictest9-21ksoftirqd/011:30:160
24214995726,3cyclictest9-21ksoftirqd/009:40:000
24214995723,4cyclictest9-21ksoftirqd/010:25:140
24214995718,4cyclictest9-21ksoftirqd/012:20:230
24214995628,4cyclictest9-21ksoftirqd/009:20:180
24214995626,6cyclictest9-21ksoftirqd/011:50:250
114992560,2sleep20-21swapper/208:55:132
24214995527,5cyclictest9-21ksoftirqd/010:55:220
24214995527,4cyclictest9-21ksoftirqd/007:30:120
24216995417,9cyclictest33-21ksoftirqd/211:35:152
24214995423,6cyclictest9-21ksoftirqd/009:00:200
24214995418,5cyclictest9-21ksoftirqd/012:05:130
24217995320,15cyclictest41-21ksoftirqd/307:20:263
2421699539,4cyclictest33-21ksoftirqd/208:50:202
2421499533,6cyclictest9-21ksoftirqd/011:45:180
2421499533,6cyclictest9-21ksoftirqd/011:45:180
2421499533,6cyclictest9-21ksoftirqd/010:50:240
24214995329,10cyclictest9-21ksoftirqd/009:15:250
24214995329,10cyclictest9-21ksoftirqd/009:15:250
24214995324,7cyclictest9-21ksoftirqd/008:00:160
24214995320,6cyclictest9-21ksoftirqd/011:10:210
24214995320,5cyclictest9-21ksoftirqd/007:10:190
24217995219,9cyclictest41-21ksoftirqd/307:10:123
2421499525,7cyclictest9-21ksoftirqd/012:10:150
2421499525,6cyclictest9-21ksoftirqd/008:30:210
2421499524,6cyclictest9-21ksoftirqd/012:25:230
2421499524,4cyclictest9-21ksoftirqd/007:40:250
2421499522,7cyclictest9-21ksoftirqd/011:40:210
24214995218,5cyclictest9-21ksoftirqd/008:05:240
24214995217,5cyclictest9-21ksoftirqd/011:55:150
24216995115,4cyclictest33-21ksoftirqd/209:10:192
2421499514,6cyclictest9-21ksoftirqd/007:55:170
2421499513,2cyclictest121rcu_preempt10:40:000
2421499504,6cyclictest9-21ksoftirqd/007:40:000
2421499503,10cyclictest9-21ksoftirqd/010:30:120
2421499502,7cyclictest9-21ksoftirqd/012:35:240
2421499502,5cyclictest9-21ksoftirqd/007:15:160
24214995018,6cyclictest9-21ksoftirqd/009:07:580
24217994916,3cyclictest41-21ksoftirqd/309:55:013
2421499495,6cyclictest9-21ksoftirqd/007:55:000
2421499495,6cyclictest9-21ksoftirqd/007:55:000
2421499494,6cyclictest9-21ksoftirqd/008:50:000
24214994924,6cyclictest9-21ksoftirqd/008:40:250
2421499490,4cyclictest9-21ksoftirqd/010:45:010
24216994818,4cyclictest33-21ksoftirqd/209:15:252
24216994818,4cyclictest33-21ksoftirqd/209:15:252
24216994811,10cyclictest33-21ksoftirqd/210:55:182
24216994810,5cyclictest33-21ksoftirqd/207:20:242
2421499484,7cyclictest9-21ksoftirqd/008:15:270
2421499483,6cyclictest9-21ksoftirqd/009:40:210
2421499482,6cyclictest9-21ksoftirqd/010:00:120
2421499481,6cyclictest9-21ksoftirqd/008:55:250
24217994712,14cyclictest41-21ksoftirqd/312:20:143
24216994719,3cyclictest33-21ksoftirqd/207:15:002
24216994711,8cyclictest33-21ksoftirqd/207:15:152
24216994711,3cyclictest33-21ksoftirqd/210:50:232
2421499475,8cyclictest9-21ksoftirqd/007:50:000
2421499474,5cyclictest9-21ksoftirqd/008:10:160
2421499473,2cyclictest121rcu_preempt07:30:000
2421499470,5cyclictest9-21ksoftirqd/008:40:010
24217994616,5cyclictest41-21ksoftirqd/308:55:213
2421699466,8cyclictest33-21ksoftirqd/207:40:002
2421699461,10cyclictest33-21ksoftirqd/209:05:172
138491460,1ptp4l0-21swapper/311:14:593
2421699450,5cyclictest33-21ksoftirqd/210:10:232
2421699450,5cyclictest33-21ksoftirqd/208:25:172
2421499455,6cyclictest9-21ksoftirqd/007:25:010
24216994439,2cyclictest33-21ksoftirqd/211:20:002
24216994411,8cyclictest33-21ksoftirqd/209:45:122
2421499444,5cyclictest9-21ksoftirqd/008:50:150
24217994330,3cyclictest41-21ksoftirqd/307:35:123
24217994328,4cyclictest41-21ksoftirqd/307:30:253
2421799432,3cyclictest41-21ksoftirqd/312:07:083
2421799431,4cyclictest41-21ksoftirqd/309:27:293
2421799430,4cyclictest41-21ksoftirqd/310:49:103
2421699437,4cyclictest33-21ksoftirqd/210:28:222
2421699436,3cyclictest121rcu_preempt11:25:232
2421699435,3cyclictest121rcu_preempt07:50:002
2421699432,3cyclictest121rcu_preempt11:00:092
2421699431,10cyclictest33-21ksoftirqd/212:30:132
2421699430,9cyclictest33-21ksoftirqd/209:55:242
24215994312,28cyclictest0-21swapper/107:30:231
2421799428,5cyclictest41-21ksoftirqd/312:15:003
24217994211,4cyclictest41-21ksoftirqd/312:35:133
2421799420,5cyclictest41-21ksoftirqd/308:23:523
2421799420,4cyclictest41-21ksoftirqd/310:25:513
138491420,0ptp4l401ktimersoftd/310:30:263
2421799412,3cyclictest41-21ksoftirqd/310:39:033
24217994115,4cyclictest41-21ksoftirqd/311:35:123
2421699415,4cyclictest121rcu_preempt12:20:262
2421699415,3cyclictest121rcu_preempt12:25:222
2421699413,11cyclictest33-21ksoftirqd/209:00:182
138491410,0ptp4l401ktimersoftd/307:53:343
138491410,0ptp4l401ktimersoftd/307:53:343
2421799405,10cyclictest121rcu_preempt11:19:143
24217994025,4cyclictest41-21ksoftirqd/309:00:123
24217994020,9cyclictest41-21ksoftirqd/308:05:263
2421699405,3cyclictest121rcu_preempt10:20:002
24216994035,3cyclictest33-21ksoftirqd/207:40:242
2421699403,3cyclictest33-21ksoftirqd/212:17:152
2421699401,7cyclictest121rcu_preempt07:59:282
138491400,0ptp4l401ktimersoftd/310:00:213
2421799394,8cyclictest41-21ksoftirqd/309:05:233
24217993933,3cyclictest41-21ksoftirqd/311:55:163
2421799392,7cyclictest41-21ksoftirqd/310:42:513
2421799391,10cyclictest41-21ksoftirqd/307:59:413
2421699396,3cyclictest121rcu_preempt09:40:112
2421699395,3cyclictest121rcu_preempt10:05:132
2421699395,3cyclictest121rcu_preempt08:20:222
2421699393,6cyclictest33-21ksoftirqd/211:20:212
2421699393,3cyclictest121rcu_preempt09:20:222
2421699393,2cyclictest121rcu_preempt07:27:062
2421699390,3cyclictest121rcu_preempt11:55:262
2421699390,2cyclictest33-21ksoftirqd/209:35:152
138491390,2ptp4l0-21swapper/309:13:033
138491390,0ptp4l401ktimersoftd/309:55:143
24217993833,3cyclictest41-21ksoftirqd/309:45:263
24217993832,3cyclictest41-21ksoftirqd/310:15:183
24217993831,3cyclictest41-21ksoftirqd/309:15:253
24217993831,3cyclictest41-21ksoftirqd/309:15:253
24217993817,4cyclictest41-21ksoftirqd/308:15:273
2421799381,3cyclictest121rcu_preempt08:25:183
2421699385,3cyclictest121rcu_preempt10:00:232
24216993833,3cyclictest33-21ksoftirqd/208:10:252
24216993818,3cyclictest33-21ksoftirqd/211:15:002
2421699381,4cyclictest121rcu_preempt08:08:422
2421699381,3cyclictest121rcu_preempt08:15:132
24215993831,5cyclictest25-21ksoftirqd/111:37:381
24215993810,26cyclictest0-21swapper/108:50:231
24217993731,2cyclictest41-21ksoftirqd/307:45:173
2421799372,3cyclictest121rcu_preempt08:30:163
24217993723,3cyclictest41-21ksoftirqd/311:20:103
24217993722,4cyclictest41-21ksoftirqd/308:50:243
24217993722,3cyclictest41-21ksoftirqd/311:45:003
24217993721,6cyclictest41-21ksoftirqd/311:55:013
2421799371,3cyclictest41-21ksoftirqd/310:10:313
2421699374,3cyclictest121rcu_preempt09:30:122
2421699374,3cyclictest121rcu_preempt09:25:192
24216993731,3cyclictest33-21ksoftirqd/212:10:262
24216993730,4cyclictest33-21ksoftirqd/210:22:462
2421699372,5cyclictest33-21ksoftirqd/208:00:182
2421699371,3cyclictest121rcu_preempt10:31:402
2421699371,3cyclictest121rcu_preempt07:55:002
2421699371,3cyclictest121rcu_preempt07:55:002
2421599377,28cyclictest0-21swapper/109:30:231
24215993732,3cyclictest25-21ksoftirqd/109:25:001
24215993731,4cyclictest25-21ksoftirqd/111:45:501
24215993731,4cyclictest25-21ksoftirqd/111:45:501
2421599370,35cyclictest0-21swapper/107:20:231
138491370,1ptp4l401ktimersoftd/308:42:033
138491370,0ptp4l401ktimersoftd/308:10:143
2421799368,3cyclictest41-21ksoftirqd/308:37:343
2421799364,3cyclictest121rcu_preempt12:15:443
24217993632,2cyclictest41-21ksoftirqd/311:30:113
24217993631,3cyclictest41-21ksoftirqd/307:20:013
2421799361,4cyclictest41-21ksoftirqd/311:26:203
2421799361,4cyclictest41-21ksoftirqd/310:58:123
2421699364,3cyclictest121rcu_preempt11:35:002
2421699363,3cyclictest121rcu_preempt11:40:142
2421699363,3cyclictest121rcu_preempt08:35:182
24216993632,2cyclictest33-21ksoftirqd/211:10:012
24216993632,2cyclictest33-21ksoftirqd/207:30:122
24216993631,3cyclictest33-21ksoftirqd/212:35:142
24216993631,3cyclictest33-21ksoftirqd/209:50:272
2421699361,4cyclictest121rcu_preempt12:06:022
2421599367,27cyclictest0-21swapper/108:00:241
24215993630,4cyclictest25-21ksoftirqd/107:50:371
24215993630,4cyclictest25-21ksoftirqd/107:50:371
24215993629,4cyclictest25-21ksoftirqd/109:39:531
24217993531,3cyclictest41-21ksoftirqd/310:50:133
24217993531,2cyclictest41-21ksoftirqd/308:00:243
24217993530,3cyclictest41-21ksoftirqd/311:05:023
24217993530,3cyclictest41-21ksoftirqd/310:09:593
24217993530,3cyclictest41-21ksoftirqd/309:35:173
24217993528,4cyclictest41-21ksoftirqd/312:32:013
2421799351,8cyclictest41-21ksoftirqd/312:25:023
24217993514,10cyclictest41-21ksoftirqd/310:20:133
24216993531,3cyclictest33-21ksoftirqd/211:50:132
24216993529,3cyclictest33-21ksoftirqd/208:30:242
24215993529,4cyclictest25-21ksoftirqd/107:35:451
24215993527,5cyclictest25-21ksoftirqd/111:15:331
24217993429,3cyclictest41-21ksoftirqd/311:00:113
2421799341,4cyclictest41-21ksoftirqd/309:31:203
24216993429,3cyclictest33-21ksoftirqd/210:45:012
24216993429,3cyclictest33-21ksoftirqd/210:35:102
2421699340,2cyclictest121rcu_preempt11:45:222
2421699340,2cyclictest121rcu_preempt11:45:212
24215993428,4cyclictest25-21ksoftirqd/109:11:571
24215993427,4cyclictest25-21ksoftirqd/109:47:391
24215993411,3cyclictest24590-21expr07:10:131
24215993410,22cyclictest0-21swapper/108:10:231
138491340,0ptp4l401ktimersoftd/307:40:113
24217993329,3cyclictest41-21ksoftirqd/312:00:003
24217993329,2cyclictest41-21ksoftirqd/309:20:203
24216993328,3cyclictest33-21ksoftirqd/210:45:192
2421599339,3cyclictest13716-21date10:05:001
2421599339,22cyclictest1162-21awk08:35:011
24215993327,4cyclictest25-21ksoftirqd/109:29:461
24215993327,4cyclictest25-21ksoftirqd/107:59:441
24215993326,4cyclictest25-21ksoftirqd/111:32:571
24215993311,3cyclictest1186-21expr11:50:131
24217993228,2cyclictest41-21ksoftirqd/308:45:193
24215993227,3cyclictest25-21ksoftirqd/112:38:011
24215993226,4cyclictest25-21ksoftirqd/112:31:551
24215993226,4cyclictest25-21ksoftirqd/112:18:151
24215993225,5cyclictest25-21ksoftirqd/110:22:301
24215993225,4cyclictest25-21ksoftirqd/108:25:131
24215993212,3cyclictest23383-21sh09:17:011
24215993212,3cyclictest23383-21sh09:17:011
24217993128,2cyclictest41-21ksoftirqd/311:45:123
24217993128,2cyclictest41-21ksoftirqd/311:45:123
24215993126,3cyclictest25-21ksoftirqd/111:10:101
24215993126,3cyclictest25-21ksoftirqd/109:00:111
24215993126,3cyclictest25-21ksoftirqd/108:08:501
24215993125,4cyclictest25-21ksoftirqd/110:06:521
24215993125,4cyclictest25-21ksoftirqd/109:43:061
24215993125,4cyclictest25-21ksoftirqd/108:47:461
24215993125,4cyclictest25-21ksoftirqd/107:19:571
24215993123,5cyclictest25-21ksoftirqd/110:17:081
2421599309,3cyclictest21763-21interrupts11:25:171
24215993025,3cyclictest5759-21cron10:55:001
24215993025,3cyclictest25-21ksoftirqd/108:44:201
24215993024,3cyclictest7304-21uname09:50:191
24215993011,3cyclictest10892-21seq09:58:211
2421599298,3cyclictest27219-21sed10:30:211
2421599297,3cyclictest19133-21fschecks_time11:20:141
2421599296,3cyclictest5970-21cut12:00:011
24215992924,3cyclictest25-21ksoftirqd/112:00:061
24215992924,3cyclictest25-21ksoftirqd/110:13:301
24215992923,4cyclictest25-21ksoftirqd/107:27:381
24215992919,7cyclictest25-21ksoftirqd/108:55:161
2421599289,3cyclictest11423-21cstates11:05:131
2421599283,4cyclictest16493-21apt-get09:05:111
24215992823,3cyclictest25-21ksoftirqd/108:39:521
24215992822,4cyclictest25-21ksoftirqd/107:48:161
24215992811,3cyclictest30431-21sshd10:36:201
2421599278,4cyclictest9571-21grep11:00:171
24215992722,3cyclictest25-21ksoftirqd/108:21:121
24215992721,4cyclictest25-21ksoftirqd/111:41:291
24215992710,3cyclictest16788-21iostat_ios12:20:191
2421599268,3cyclictest25684-21sshd08:15:271
2421599261,2cyclictest121rcu_preempt07:42:021
24215992610,3cyclictest7690-21timerandwakeup10:55:241
2421599249,11cyclictest31446-21diskstats10:40:131
24215992419,3cyclictest25-21ksoftirqd/112:07:111
24215992418,4cyclictest25-21ksoftirqd/110:45:431
24215992417,4cyclictest25-21ksoftirqd/112:27:421
2421599237,12cyclictest24171-21perl10:25:151
24215992014,3cyclictest11223-21cpuspeed_turbos12:10:121
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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