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2026-04-28 - 20:39
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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 Tue Apr 28, 2026 12:45:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
268842203169,22sleep00-21swapper/007:09:060
264032203169,22sleep30-21swapper/307:06:203
268012202168,22sleep20-21swapper/207:08:082
268302201168,22sleep10-21swapper/107:08:311
27437996325,7cyclictest25-21ksoftirqd/109:20:231
27436996322,4cyclictest9-21ksoftirqd/007:58:420
27439996231,9cyclictest33-21ksoftirqd/211:10:132
27439996231,4cyclictest33-21ksoftirqd/207:10:182
27439996230,5cyclictest33-21ksoftirqd/209:50:012
27439996125,8cyclictest33-21ksoftirqd/209:35:192
27437996126,6cyclictest25-21ksoftirqd/110:05:171
27436996124,4cyclictest9-21ksoftirqd/009:55:200
27439996028,9cyclictest33-21ksoftirqd/207:35:132
27439996028,6cyclictest33-21ksoftirqd/208:35:182
27439996026,6cyclictest33-21ksoftirqd/209:50:132
27439996025,4cyclictest33-21ksoftirqd/207:55:132
27439996022,6cyclictest33-21ksoftirqd/207:15:202
27437996012,5cyclictest25-21ksoftirqd/110:55:001
27439995932,6cyclictest33-21ksoftirqd/209:05:152
27439995928,9cyclictest33-21ksoftirqd/209:20:182
27439995927,3cyclictest33-21ksoftirqd/212:25:212
27439995926,6cyclictest33-21ksoftirqd/211:30:232
27439995922,6cyclictest33-21ksoftirqd/209:15:242
27439995922,5cyclictest33-21ksoftirqd/212:05:162
27439995921,5cyclictest33-21ksoftirqd/211:20:162
27437995956,2cyclictest231rcuc/108:37:131
27436995927,10cyclictest9-21ksoftirqd/007:35:190
27439995828,3cyclictest33-21ksoftirqd/212:20:232
27439995827,3cyclictest33-21ksoftirqd/209:25:132
27439995826,4cyclictest33-21ksoftirqd/210:35:142
27439995824,6cyclictest33-21ksoftirqd/210:45:192
27439995822,5cyclictest33-21ksoftirqd/212:19:102
27439995821,5cyclictest33-21ksoftirqd/212:35:172
27437995826,4cyclictest25-21ksoftirqd/108:40:211
27437995825,9cyclictest25-21ksoftirqd/111:10:131
27439995731,6cyclictest33-21ksoftirqd/208:55:142
27439995730,4cyclictest33-21ksoftirqd/211:40:182
27439995729,7cyclictest33-21ksoftirqd/211:55:012
27439995728,7cyclictest33-21ksoftirqd/210:40:142
27439995725,4cyclictest33-21ksoftirqd/209:55:142
27439995725,10cyclictest33-21ksoftirqd/211:00:172
27439995721,6cyclictest33-21ksoftirqd/211:15:142
27439995719,4cyclictest33-21ksoftirqd/211:35:212
27437995728,4cyclictest25-21ksoftirqd/108:10:131
27437995723,6cyclictest25-21ksoftirqd/110:40:241
27439995632,6cyclictest33-21ksoftirqd/210:25:132
27439995628,7cyclictest33-21ksoftirqd/208:10:122
27439995626,4cyclictest33-21ksoftirqd/208:40:192
27439995624,5cyclictest33-21ksoftirqd/208:20:242
27439995624,4cyclictest33-21ksoftirqd/209:40:222
27439995623,7cyclictest33-21ksoftirqd/210:30:152
27439995619,6cyclictest33-21ksoftirqd/208:30:192
2743699565,9cyclictest9-21ksoftirqd/011:45:130
2743699565,8cyclictest9-21ksoftirqd/011:40:190
2743699564,9cyclictest9-21ksoftirqd/012:30:270
2743699564,9cyclictest9-21ksoftirqd/012:30:270
138491560,1ptp4l401ktimersoftd/309:40:273
27439995528,4cyclictest33-21ksoftirqd/208:05:142
27439995527,4cyclictest33-21ksoftirqd/207:20:272
27439995525,7cyclictest33-21ksoftirqd/208:50:232
27439995522,3cyclictest33-21ksoftirqd/211:25:122
27439995520,5cyclictest33-21ksoftirqd/211:05:132
27439995517,6cyclictest33-21ksoftirqd/212:10:152
2743699556,9cyclictest9-21ksoftirqd/010:50:130
27436995521,9cyclictest9-21ksoftirqd/010:20:250
27436995521,9cyclictest9-21ksoftirqd/010:20:240
138491550,1ptp4l401ktimersoftd/308:00:173
27439995429,6cyclictest33-21ksoftirqd/210:20:182
27439995429,6cyclictest33-21ksoftirqd/210:20:172
27439995423,9cyclictest33-21ksoftirqd/211:45:192
27439995421,5cyclictest33-21ksoftirqd/209:30:182
27439995421,4cyclictest33-21ksoftirqd/210:50:142
2743799543,8cyclictest23955-21ls08:05:201
27437995418,3cyclictest25-21ksoftirqd/112:16:341
2743699546,8cyclictest9-21ksoftirqd/012:00:170
2743699545,9cyclictest9-21ksoftirqd/009:00:130
2743699545,8cyclictest9-21ksoftirqd/009:10:220
2743699544,9cyclictest9-21ksoftirqd/010:05:160
2743699543,6cyclictest9-21ksoftirqd/009:39:590
2743699543,5cyclictest9-21ksoftirqd/011:35:000
27436995429,9cyclictest9-21ksoftirqd/008:45:170
27436995419,10cyclictest9-21ksoftirqd/008:05:170
27439995329,6cyclictest33-21ksoftirqd/210:15:152
27439995328,6cyclictest33-21ksoftirqd/207:45:212
27439995326,7cyclictest33-21ksoftirqd/207:40:162
27439995318,5cyclictest33-21ksoftirqd/207:30:142
27439995317,6cyclictest33-21ksoftirqd/210:05:172
2743699535,9cyclictest9-21ksoftirqd/008:40:210
2743699535,9cyclictest9-21ksoftirqd/008:35:240
2743699535,8cyclictest9-21ksoftirqd/010:25:160
2743699534,8cyclictest9-21ksoftirqd/008:15:140
2743699533,7cyclictest9-21ksoftirqd/007:10:260
138491530,1ptp4l401ktimersoftd/311:54:563
27439995226,7cyclictest33-21ksoftirqd/210:55:172
27439995216,8cyclictest33-21ksoftirqd/209:10:162
27439995216,6cyclictest33-21ksoftirqd/210:00:262
2743699526,9cyclictest9-21ksoftirqd/010:10:150
2743699526,7cyclictest9-21ksoftirqd/009:25:180
2743699525,9cyclictest9-21ksoftirqd/009:20:180
2743699524,9cyclictest9-21ksoftirqd/011:50:130
2743699524,9cyclictest9-21ksoftirqd/008:50:150
2743699524,8cyclictest9-21ksoftirqd/007:50:170
2743699523,8cyclictest9-21ksoftirqd/007:20:120
27439995120,4cyclictest33-21ksoftirqd/209:00:262
2743799519,3cyclictest25-21ksoftirqd/111:20:141
2743799517,5cyclictest25-21ksoftirqd/109:45:231
2743799513,5cyclictest25-21ksoftirqd/107:35:141
2743699516,9cyclictest9-21ksoftirqd/011:20:160
2743699516,7cyclictest9-21ksoftirqd/012:14:590
2743699515,9cyclictest9-21ksoftirqd/011:55:140
2743699515,8cyclictest9-21ksoftirqd/010:35:140
2743699514,9cyclictest9-21ksoftirqd/008:55:140
2743699514,9cyclictest9-21ksoftirqd/007:40:130
2743699514,8cyclictest9-21ksoftirqd/011:00:130
2743699513,8cyclictest9-21ksoftirqd/011:25:140
2743699512,6cyclictest9-21ksoftirqd/010:35:010
2743699512,10cyclictest9-21ksoftirqd/009:40:170
2743999507,2cyclictest33-21ksoftirqd/210:10:262
27439995030,11cyclictest33-21ksoftirqd/212:00:192
27439995028,6cyclictest33-21ksoftirqd/207:50:152
27439995021,6cyclictest33-21ksoftirqd/208:45:142
2743799505,6cyclictest25-21ksoftirqd/110:25:191
2743799503,6cyclictest2435-21latency_hist09:35:001
2743699506,8cyclictest9-21ksoftirqd/009:45:180
2743699504,9cyclictest9-21ksoftirqd/010:40:140
27436995012,6cyclictest9-21ksoftirqd/008:01:590
138491500,1ptp4l401ktimersoftd/311:41:063
2743999499,6cyclictest33-21ksoftirqd/212:30:162
2743999499,6cyclictest33-21ksoftirqd/212:30:162
27439994923,3cyclictest33-21ksoftirqd/208:00:222
27439994920,6cyclictest33-21ksoftirqd/208:25:222
27439994919,5cyclictest33-21ksoftirqd/207:25:222
27437994911,3cyclictest25-21ksoftirqd/111:55:261
2743699496,9cyclictest9-21ksoftirqd/011:15:160
2743699495,8cyclictest9-21ksoftirqd/012:15:110
2743699494,9cyclictest9-21ksoftirqd/011:10:130
2743699494,8cyclictest9-21ksoftirqd/012:25:190
2743699493,5cyclictest22180-21latency_hist12:25:010
2743699492,6cyclictest9-21ksoftirqd/010:45:240
27436994917,3cyclictest9-21ksoftirqd/007:19:390
2743699491,5cyclictest9-21ksoftirqd/008:20:140
2743699490,12cyclictest9-21ksoftirqd/008:10:130
2743999486,2cyclictest33-21ksoftirqd/208:15:152
2743799488,5cyclictest25-21ksoftirqd/112:05:191
2743799487,5cyclictest25-21ksoftirqd/107:40:181
2743799486,6cyclictest25-21ksoftirqd/110:01:231
2743799486,6cyclictest25-21ksoftirqd/109:50:211
2743699485,9cyclictest9-21ksoftirqd/009:05:150
2743699484,9cyclictest9-21ksoftirqd/011:35:140
2743699484,8cyclictest9-21ksoftirqd/009:30:150
2743699483,8cyclictest9-21ksoftirqd/007:25:140
27436994816,7cyclictest9-21ksoftirqd/011:08:490
2743699480,5cyclictest9-21ksoftirqd/012:05:260
138491480,1ptp4l401ktimersoftd/309:17:513
2743699470,9cyclictest9-21ksoftirqd/009:50:210
2743999466,3cyclictest33-21ksoftirqd/211:55:142
2743799464,4cyclictest25-21ksoftirqd/111:05:171
27437994620,10cyclictest25-21ksoftirqd/109:25:201
27437994619,3cyclictest25-21ksoftirqd/112:10:171
2743799460,7cyclictest241ktimersoftd/111:30:211
2743699464,8cyclictest9-21ksoftirqd/010:15:120
2743699461,7cyclictest9-21ksoftirqd/007:45:010
138591462,3phc2sys41-21ksoftirqd/310:30:263
2743799458,3cyclictest25-21ksoftirqd/108:20:291
27437994528,7cyclictest25-21ksoftirqd/110:30:151
27437994517,4cyclictest25-21ksoftirqd/109:05:151
2743699453,8cyclictest9-21ksoftirqd/010:00:190
2743699452,6cyclictest9-21ksoftirqd/010:55:240
2743699452,6cyclictest9-21ksoftirqd/009:15:140
2743699450,8cyclictest9-21ksoftirqd/012:35:190
2743699450,11cyclictest9-21ksoftirqd/008:30:160
138491450,1ptp4l401ktimersoftd/311:15:163
2743799445,5cyclictest25-21ksoftirqd/108:55:211
2743799441,7cyclictest241ktimersoftd/109:15:011
2743799440,7cyclictest241ktimersoftd/108:25:141
2743699441,6cyclictest9-21ksoftirqd/007:30:140
2743799439,5cyclictest25-21ksoftirqd/109:15:171
27437994317,7cyclictest25-21ksoftirqd/110:56:541
2743699432,10cyclictest9-21ksoftirqd/008:25:180
138491430,0ptp4l401ktimersoftd/312:10:263
134991430,5getstats2744199cyclictest10:40:463
2743799424,3cyclictest25-21ksoftirqd/108:00:221
27437994237,3cyclictest241ktimersoftd/107:55:151
2743799423,5cyclictest241ktimersoftd/107:25:141
2743799422,6cyclictest241ktimersoftd/112:30:281
2743799422,6cyclictest241ktimersoftd/112:30:281
2743799421,6cyclictest6675-21/usr/sbin/munin11:50:231
27437994216,7cyclictest25-21ksoftirqd/108:52:301
2743799420,6cyclictest241ktimersoftd/111:15:011
138491420,0ptp4l401ktimersoftd/308:20:063
134991420,6getstats2744199cyclictest08:40:263
2743799412,5cyclictest11167-21/usr/sbin/munin12:00:211
27437994125,4cyclictest25-21ksoftirqd/107:50:151
2743799411,5cyclictest241ktimersoftd/107:30:261
138491410,0ptp4l401ktimersoftd/307:11:303
27437994028,3cyclictest25-21ksoftirqd/107:20:231
27437994020,5cyclictest25-21ksoftirqd/111:25:211
27437994014,10cyclictest25-21ksoftirqd/111:45:151
2743799400,6cyclictest25-21ksoftirqd/111:43:391
2743799400,5cyclictest241ktimersoftd/110:20:151
2743799400,5cyclictest241ktimersoftd/110:20:151
2743799395,5cyclictest25-21ksoftirqd/109:00:201
2743799393,2cyclictest121rcu_preempt08:30:181
2743799392,4cyclictest25-21ksoftirqd/110:10:221
27437993924,7cyclictest25-21ksoftirqd/112:20:201
27437993918,3cyclictest25-21ksoftirqd/112:25:131
138491390,0ptp4l401ktimersoftd/308:49:563
300542380,1sleep30-21swapper/311:35:023
2743799384,5cyclictest25-21ksoftirqd/108:45:241
2743799383,2cyclictest121rcu_preempt11:35:021
2743799382,5cyclictest25-21ksoftirqd/110:39:241
2743799382,5cyclictest23672-21sed10:15:201
27441993730,5cyclictest41-21ksoftirqd/310:57:313
2743799373,5cyclictest25-21ksoftirqd/109:40:121
2743799371,23cyclictest2768-21grep09:35:131
2743799370,6cyclictest241ktimersoftd/107:10:261
2743799370,5cyclictest241ktimersoftd/107:15:161
138491370,0ptp4l401ktimersoftd/312:30:133
138491370,0ptp4l401ktimersoftd/312:30:123
27441993630,4cyclictest41-21ksoftirqd/311:08:463
2743799364,3cyclictest25-21ksoftirqd/112:38:381
2743799363,7cyclictest25-21ksoftirqd/111:00:201
2743799362,2cyclictest0-21swapper/108:18:211
138491360,14ptp4l401ktimersoftd/307:59:593
138491360,0ptp4l401ktimersoftd/311:25:213
138491360,0ptp4l401ktimersoftd/309:01:403
27441993530,3cyclictest24700-21cron11:25:003
27441993529,4cyclictest41-21ksoftirqd/307:42:063
27437993531,3cyclictest25-21ksoftirqd/110:45:251
138491350,0ptp4l401ktimersoftd/308:05:193
27441993429,3cyclictest41-21ksoftirqd/310:49:083
27441993428,4cyclictest41-21ksoftirqd/312:22:553
27441993428,4cyclictest41-21ksoftirqd/310:19:043
27441993428,4cyclictest41-21ksoftirqd/310:06:323
27441993428,4cyclictest41-21ksoftirqd/309:55:053
27441993428,4cyclictest41-21ksoftirqd/309:08:353
27441993428,4cyclictest41-21ksoftirqd/308:12:353
27441993428,4cyclictest41-21ksoftirqd/307:39:213
2743799341,8cyclictest25-21ksoftirqd/109:59:081
2743799340,6cyclictest25-21ksoftirqd/107:45:251
138491340,0ptp4l401ktimersoftd/311:45:143
138491340,0ptp4l401ktimersoftd/310:10:133
138491340,0ptp4l401ktimersoftd/307:50:243
27441993327,4cyclictest41-21ksoftirqd/311:01:403
27441993327,4cyclictest41-21ksoftirqd/307:31:473
27441993327,4cyclictest41-21ksoftirqd/307:20:043
138491330,0ptp4l401ktimersoftd/310:20:043
138491330,0ptp4l401ktimersoftd/310:20:043
27441993227,3cyclictest41-21ksoftirqd/311:13:533
27441993227,3cyclictest41-21ksoftirqd/309:39:143
27441993226,4cyclictest41-21ksoftirqd/309:45:573
27441993226,4cyclictest41-21ksoftirqd/308:57:593
138491320,9ptp4l401ktimersoftd/308:55:013
138491320,8ptp4l401ktimersoftd/308:36:403
27441993126,3cyclictest41-21ksoftirqd/312:07:483
27441993125,4cyclictest41-21ksoftirqd/311:32:493
27441993125,4cyclictest41-21ksoftirqd/310:04:313
27441993125,4cyclictest41-21ksoftirqd/309:23:553
27441993026,3cyclictest41-21ksoftirqd/309:10:203
27441993025,3cyclictest41-21ksoftirqd/312:15:373
27441993025,3cyclictest41-21ksoftirqd/309:27:193
27441993025,3cyclictest41-21ksoftirqd/308:33:293
27441993025,3cyclictest41-21ksoftirqd/308:18:503
27441993024,4cyclictest41-21ksoftirqd/309:31:183
138491300,0ptp4l401ktimersoftd/312:35:203
138491300,0ptp4l401ktimersoftd/311:58:113
27441992924,3cyclictest41-21ksoftirqd/312:04:073
27441992924,3cyclictest41-21ksoftirqd/310:35:133
27441992924,3cyclictest41-21ksoftirqd/307:18:353
138491290,0ptp4l401ktimersoftd/310:51:103
27441992823,3cyclictest41-21ksoftirqd/307:45:123
27441992721,4cyclictest41-21ksoftirqd/312:28:333
27441992721,4cyclictest41-21ksoftirqd/309:51:563
138491260,1ptp4l401ktimersoftd/307:25:123
138491260,0ptp4l401ktimersoftd/308:26:233
138491250,0ptp4l401ktimersoftd/310:25:243
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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