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2026-04-28 - 22:37
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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 100 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
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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