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2026-09-07 - 19:37
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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 Mon Sep 07, 2026 12:45:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
145512203166,25sleep30-21swapper/307:07:203
146912202169,22sleep10-21swapper/107:09:111
146322202169,22sleep20-21swapper/207:08:252
144642202169,22sleep00-21swapper/007:06:140
1800721630,4sleep21520399cyclictest08:20:122
1070821500,7sleep11520299cyclictest10:15:141
420721220,2sleep20-21swapper/211:05:212
138491700,1ptp4l391rcuc/311:55:143
138491640,0ptp4l401ktimersoftd/312:22:193
17182570,2sleep20-21swapper/209:55:212
15202995513,13cyclictest25-21ksoftirqd/108:25:241
138491550,1ptp4l391rcuc/308:45:183
138491550,0ptp4l401ktimersoftd/310:04:303
1520199542,5cyclictest15483-21latency_hist11:30:000
1520199531,6cyclictest8388-21fschecks_time08:00:140
1520199531,6cyclictest8388-21fschecks_time08:00:140
138491530,1ptp4l401ktimersoftd/308:57:383
138491530,1ptp4l401ktimersoftd/308:57:383
1520199522,5cyclictest101ktimersoftd/009:20:000
1520199521,5cyclictest22339-21grep09:30:260
285992510,4sleep09-21ksoftirqd/007:35:170
1520199513,7cyclictest5009-21tail08:55:250
1520199513,7cyclictest5009-21tail08:55:250
1520199513,6cyclictest30964-21uniq08:45:160
1520199503,7cyclictest19188-21grep07:15:240
1520199501,6cyclictest13279-21tune2fs08:10:150
1520199492,5cyclictest31956-21phc2sys12:00:230
1520199492,5cyclictest101ktimersoftd/010:40:020
1520199491,7cyclictest101ktimersoftd/011:45:280
1520199491,6cyclictest101ktimersoftd/010:30:000
1520199490,7cyclictest101ktimersoftd/007:50:010
147992490,2sleep30-21swapper/309:15:253
1520299484,2cyclictest121rcu_preempt07:25:001
15202994818,8cyclictest25-21ksoftirqd/110:50:001
15202994816,4cyclictest25-21ksoftirqd/109:40:271
15202994816,4cyclictest25-21ksoftirqd/109:40:261
15202994815,4cyclictest25-21ksoftirqd/109:45:181
1520299480,2cyclictest121rcu_preempt08:55:241
1520299480,2cyclictest121rcu_preempt08:55:241
1520199483,6cyclictest17374-21tail09:20:280
1520199482,6cyclictest9-21ksoftirqd/010:40:020
1520199481,6cyclictest16252-21fschecks_time11:30:160
1520199481,5cyclictest101ktimersoftd/009:25:260
1520199480,6cyclictest101ktimersoftd/011:55:150
15202994715,4cyclictest25-21ksoftirqd/108:40:231
1520199474,5cyclictest9-21ksoftirqd/010:20:210
1520199472,6cyclictest20499-21expr07:20:150
1520199470,6cyclictest101ktimersoftd/009:40:120
1520199470,6cyclictest101ktimersoftd/009:40:120
1520199470,6cyclictest101ktimersoftd/009:10:130
1520299467,10cyclictest25-21ksoftirqd/111:25:001
1520199464,4cyclictest9-21ksoftirqd/008:35:170
1520199462,6cyclictest8843-21irqrtprio10:10:190
1520199462,6cyclictest31077-21cut10:55:140
1520199462,5cyclictest101ktimersoftd/009:00:260
1520199461,5cyclictest16636-21processes07:10:240
1520199461,5cyclictest101ktimersoftd/009:35:130
1520199460,43cyclictest101ktimersoftd/011:50:140
250522450,1sleep00-21swapper/007:30:000
15202994510,14cyclictest25-21ksoftirqd/110:38:281
1520199451,5cyclictest101ktimersoftd/007:30:160
1520199450,7cyclictest101ktimersoftd/012:20:240
1520199450,6cyclictest101ktimersoftd/012:25:130
1520199450,5cyclictest101ktimersoftd/012:30:210
1520199450,5cyclictest101ktimersoftd/011:35:210
1520199450,42cyclictest101ktimersoftd/009:50:010
162132440,1sleep30-21swapper/312:35:163
15202994439,3cyclictest25-21ksoftirqd/112:25:001
1520299440,2cyclictest121rcu_preempt09:30:001
1520299440,2cyclictest121rcu_preempt08:55:011
1520199443,5cyclictest101ktimersoftd/007:40:220
1520299432,3cyclictest121rcu_preempt12:10:171
1520299432,3cyclictest121rcu_preempt12:10:161
15202994315,4cyclictest25-21ksoftirqd/111:05:151
15202994314,4cyclictest25-21ksoftirqd/109:55:321
1520299431,3cyclictest121rcu_preempt12:30:251
1520299431,3cyclictest121rcu_preempt12:15:261
1520299430,40cyclictest19959-21sh07:20:011
1520199433,5cyclictest3381-21sort07:50:160
1520199431,7cyclictest8927-21irqrtprio11:15:190
1520199430,5cyclictest152302chrt08:15:010
1520199430,5cyclictest101ktimersoftd/010:05:190
138491430,0ptp4l401ktimersoftd/311:22:203
138491430,0ptp4l401ktimersoftd/309:30:363
138491430,0ptp4l401ktimersoftd/309:00:343
1520299428,11cyclictest25-21ksoftirqd/111:40:161
1520299425,10cyclictest25-21ksoftirqd/107:25:211
15202994239,2cyclictest25-21ksoftirqd/107:59:591
15202994214,4cyclictest25-21ksoftirqd/109:05:131
1520299420,2cyclictest121rcu_preempt08:05:191
1520199423,6cyclictest9-21ksoftirqd/012:10:160
1520199423,6cyclictest9-21ksoftirqd/012:10:160
1520199422,6cyclictest10882-21grep10:15:140
1520199421,7cyclictest22217-21ls11:40:270
1520199420,5cyclictest101ktimersoftd/011:15:000
1520299418,3cyclictest25-21ksoftirqd/108:45:181
1520299416,4cyclictest25-21ksoftirqd/108:39:591
15202994129,10cyclictest25-21ksoftirqd/111:30:151
15202994127,4cyclictest25-21ksoftirqd/110:30:261
15202994114,4cyclictest25-21ksoftirqd/110:10:151
1520299411,2cyclictest121rcu_preempt09:20:181
15202994112,4cyclictest25-21ksoftirqd/112:35:131
15202994111,5cyclictest25-21ksoftirqd/110:55:211
1520199413,6cyclictest32627-21awk09:55:010
1520199413,6cyclictest101ktimersoftd/010:45:140
1520199412,4cyclictest9-21ksoftirqd/009:57:350
1520199411,6cyclictest101ktimersoftd/012:35:240
1520199410,4cyclictest0-21swapper/008:05:290
138491410,0ptp4l401ktimersoftd/307:51:303
15204994025,5cyclictest41-21ksoftirqd/307:15:193
15203994037,2cyclictest33-21ksoftirqd/209:15:012
15203994036,2cyclictest33-21ksoftirqd/211:30:012
1520399401,3cyclictest121rcu_preempt07:15:192
15202994015,4cyclictest25-21ksoftirqd/112:02:341
1520299400,11cyclictest25-21ksoftirqd/110:50:311
1520199400,6cyclictest101ktimersoftd/010:00:130
1520199400,5cyclictest101ktimersoftd/009:05:140
138491400,1ptp4l401ktimersoftd/307:26:103
138491400,0ptp4l401ktimersoftd/307:40:223
15202993934,3cyclictest25-21ksoftirqd/112:05:161
15202993933,3cyclictest25-21ksoftirqd/109:15:241
15202993933,3cyclictest25-21ksoftirqd/107:50:001
1520299393,13cyclictest25-21ksoftirqd/109:35:151
15202993927,9cyclictest25-21ksoftirqd/110:25:241
1520299392,2cyclictest131rcu_sched09:00:261
1520299392,10cyclictest25-21ksoftirqd/108:30:141
1520299391,2cyclictest121rcu_preempt11:45:201
1520299391,2cyclictest121rcu_preempt07:35:211
15202993911,3cyclictest25-21ksoftirqd/111:55:191
1520199394,5cyclictest9-21ksoftirqd/008:28:510
1520199391,5cyclictest101ktimersoftd/012:15:140
15204993832,4cyclictest41-21ksoftirqd/311:48:183
15203993832,4cyclictest33-21ksoftirqd/208:49:302
15202993833,3cyclictest25-21ksoftirqd/111:50:261
15202993833,3cyclictest25-21ksoftirqd/111:10:281
15202993831,4cyclictest25-21ksoftirqd/108:18:401
1520299380,2cyclictest121rcu_preempt12:25:141
1520199381,6cyclictest28312-21cstates08:40:140
15201993812,6cyclictest9-21ksoftirqd/012:09:050
1520199380,6cyclictest5835-21fschecks_time07:55:160
1520199380,5cyclictest101ktimersoftd/010:30:010
15204993732,3cyclictest41-21ksoftirqd/309:40:013
15202993733,3cyclictest25-21ksoftirqd/110:00:141
15202993733,3cyclictest25-21ksoftirqd/109:50:141
15202993732,3cyclictest25-21ksoftirqd/108:20:141
15202993732,3cyclictest25-21ksoftirqd/108:10:141
15202993732,3cyclictest25-21ksoftirqd/108:00:211
15202993732,3cyclictest25-21ksoftirqd/108:00:211
15202993731,3cyclictest25-21ksoftirqd/111:40:001
15202993724,3cyclictest25-21ksoftirqd/110:20:271
15204993631,3cyclictest10816-21fschecks_count10:15:153
15204993630,4cyclictest41-21ksoftirqd/311:16:133
15204993630,4cyclictest41-21ksoftirqd/310:07:013
15204993630,4cyclictest41-21ksoftirqd/309:25:123
15204993629,5cyclictest41-21ksoftirqd/307:32:543
15203993631,3cyclictest33-21ksoftirqd/208:15:002
15203993630,4cyclictest33-21ksoftirqd/211:18:572
15203993630,4cyclictest33-21ksoftirqd/210:58:062
15203993630,4cyclictest33-21ksoftirqd/210:48:082
15203993630,4cyclictest33-21ksoftirqd/209:30:102
15203993629,4cyclictest33-21ksoftirqd/211:03:162
1520299368,9cyclictest25-21ksoftirqd/111:25:151
1520299365,4cyclictest25-21ksoftirqd/107:30:141
15202993631,3cyclictest25-21ksoftirqd/110:40:141
15202993631,3cyclictest25-21ksoftirqd/109:15:001
15202993631,3cyclictest25-21ksoftirqd/107:50:241
15202993631,2cyclictest25-21ksoftirqd/107:10:191
15202993630,3cyclictest25-21ksoftirqd/109:30:141
15202993629,4cyclictest25-21ksoftirqd/111:18:151
1520199362,6cyclictest0-21swapper/008:50:230
1520199360,6cyclictest9-21ksoftirqd/011:20:250
138591367,4phc2sys41-21ksoftirqd/311:25:153
138491360,0ptp4l401ktimersoftd/312:16:323
15204993530,3cyclictest41-21ksoftirqd/308:50:133
15204993529,4cyclictest41-21ksoftirqd/312:13:103
15204993529,4cyclictest41-21ksoftirqd/312:13:093
15204993529,4cyclictest41-21ksoftirqd/310:35:053
15204993529,4cyclictest41-21ksoftirqd/308:44:523
15203993530,3cyclictest33-21ksoftirqd/208:35:132
15203993530,3cyclictest33-21ksoftirqd/207:39:592
15203993529,4cyclictest33-21ksoftirqd/211:40:142
15203993529,4cyclictest33-21ksoftirqd/211:37:072
1520199351,6cyclictest3840-21irqrtprio11:05:190
1520199350,5cyclictest30357-21latency_hist10:55:010
15204993430,2cyclictest41-21ksoftirqd/308:10:213
15204993428,4cyclictest41-21ksoftirqd/312:34:363
15204993428,4cyclictest41-21ksoftirqd/311:53:083
15204993428,4cyclictest41-21ksoftirqd/311:31:173
15204993428,4cyclictest41-21ksoftirqd/310:40:103
15204993428,4cyclictest41-21ksoftirqd/307:48:043
15203993429,3cyclictest33-21ksoftirqd/212:00:012
15203993429,3cyclictest33-21ksoftirqd/211:50:142
15203993429,3cyclictest33-21ksoftirqd/209:00:002
15203993429,3cyclictest33-21ksoftirqd/209:00:002
15203993428,4cyclictest33-21ksoftirqd/212:36:592
15203993428,4cyclictest33-21ksoftirqd/211:13:552
15203993428,4cyclictest33-21ksoftirqd/210:50:402
15203993428,4cyclictest33-21ksoftirqd/210:24:042
15203993428,4cyclictest33-21ksoftirqd/210:06:392
15203993428,4cyclictest33-21ksoftirqd/209:40:532
15203993428,4cyclictest33-21ksoftirqd/209:40:522
15203993428,4cyclictest33-21ksoftirqd/208:09:252
15203993428,4cyclictest33-21ksoftirqd/207:25:402
15203993427,5cyclictest33-21ksoftirqd/211:24:262
15203993427,3cyclictest33-21ksoftirqd/208:30:132
15202993431,2cyclictest25-21ksoftirqd/110:05:151
15202993428,3cyclictest25-21ksoftirqd/111:00:131
1520199340,5cyclictest9-21ksoftirqd/008:20:000
15204993329,3cyclictest41-21ksoftirqd/308:30:183
15204993327,4cyclictest41-21ksoftirqd/312:08:483
15204993327,4cyclictest41-21ksoftirqd/310:47:403
15204993327,4cyclictest41-21ksoftirqd/310:23:293
15204993327,4cyclictest41-21ksoftirqd/309:49:113
15204993327,4cyclictest41-21ksoftirqd/309:07:433
15204993327,4cyclictest41-21ksoftirqd/308:27:073
15204993327,4cyclictest41-21ksoftirqd/307:39:303
15204993327,4cyclictest41-21ksoftirqd/307:21:133
15203993329,3cyclictest33-21ksoftirqd/212:05:012
15203993329,3cyclictest33-21ksoftirqd/210:00:202
15203993328,3cyclictest33-21ksoftirqd/210:42:412
15203993328,3cyclictest33-21ksoftirqd/210:10:112
15203993328,3cyclictest33-21ksoftirqd/209:23:532
15203993328,3cyclictest33-21ksoftirqd/207:56:022
15203993328,3cyclictest33-21ksoftirqd/207:50:122
15203993327,4cyclictest33-21ksoftirqd/212:17:422
15203993327,4cyclictest33-21ksoftirqd/212:05:462
15203993326,5cyclictest33-21ksoftirqd/207:13:252
15203993326,4cyclictest33-21ksoftirqd/211:46:332
15202993328,3cyclictest25-21ksoftirqd/107:40:011
1520199332,5cyclictest9-21ksoftirqd/008:30:140
15204993228,2cyclictest41-21ksoftirqd/311:10:203
15204993228,2cyclictest138491ptp4l08:21:013
15204993227,3cyclictest41-21ksoftirqd/310:30:123
15204993227,3cyclictest41-21ksoftirqd/310:25:353
15204993227,3cyclictest41-21ksoftirqd/308:02:103
15204993227,3cyclictest41-21ksoftirqd/308:02:103
15204993227,3cyclictest41-21ksoftirqd/307:56:313
15204993226,4cyclictest41-21ksoftirqd/311:39:563
15204993226,4cyclictest41-21ksoftirqd/310:13:433
15204993226,4cyclictest41-21ksoftirqd/309:57:463
15204993226,4cyclictest41-21ksoftirqd/308:38:103
15203993227,4cyclictest33-21ksoftirqd/208:15:132
15203993227,3cyclictest33-21ksoftirqd/212:31:452
15203993227,3cyclictest33-21ksoftirqd/209:36:452
15203993227,3cyclictest33-21ksoftirqd/208:54:082
15203993226,4cyclictest33-21ksoftirqd/212:10:362
15203993226,4cyclictest33-21ksoftirqd/212:10:362
15203993226,4cyclictest33-21ksoftirqd/207:20:142
1520399320,30cyclictest19480-21grep09:25:232
15204993126,3cyclictest41-21ksoftirqd/312:25:033
15204993126,3cyclictest41-21ksoftirqd/309:21:083
15204993126,3cyclictest41-21ksoftirqd/308:06:123
15204993125,4cyclictest41-21ksoftirqd/307:12:013
15203993127,3cyclictest33-21ksoftirqd/207:41:172
15203993126,3cyclictest33-21ksoftirqd/212:20:252
15203993126,3cyclictest33-21ksoftirqd/209:51:422
15203993125,4cyclictest33-21ksoftirqd/210:39:582
15203993125,4cyclictest33-21ksoftirqd/210:34:482
15203993125,4cyclictest33-21ksoftirqd/209:19:182
15203993125,4cyclictest33-21ksoftirqd/209:02:012
15203993125,3cyclictest33-21ksoftirqd/208:40:202
15203993124,4cyclictest33-21ksoftirqd/207:30:182
1520199311,5cyclictest101ktimersoftd/011:03:330
15204993024,4cyclictest41-21ksoftirqd/310:53:423
15204993024,4cyclictest41-21ksoftirqd/309:10:083
15203993024,4cyclictest33-21ksoftirqd/212:26:522
15203993024,4cyclictest33-21ksoftirqd/209:50:012
15203993024,4cyclictest33-21ksoftirqd/207:45:312
138491300,0ptp4l401ktimersoftd/310:59:033
15204992923,4cyclictest41-21ksoftirqd/311:40:083
15203992924,3cyclictest33-21ksoftirqd/209:09:262
15203992923,4cyclictest33-21ksoftirqd/211:34:142
15203992923,4cyclictest33-21ksoftirqd/210:15:222
15203992923,4cyclictest33-21ksoftirqd/208:25:432
138491290,0ptp4l401ktimersoftd/309:40:163
138491290,0ptp4l401ktimersoftd/309:40:153
15204992824,2cyclictest41-21ksoftirqd/312:00:133
15204992823,3cyclictest41-21ksoftirqd/311:02:383
15203992822,3cyclictest33-21ksoftirqd/210:25:122
138491280,0ptp4l401ktimersoftd/311:08:473
138491280,0ptp4l401ktimersoftd/309:51:023
138491270,1ptp4l0-21swapper/308:15:263
15203992623,2cyclictest33-21ksoftirqd/208:00:142
15203992623,2cyclictest33-21ksoftirqd/208:00:132
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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