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2026-08-21 - 14:57
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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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack3slot6.osadl.org (updated Fri Aug 21, 2026 12:45:07)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
301669911483,20cyclictest14-21ksoftirqd/008:05:120
1697621120,5chrt16275-21/usr/sbin/munin08:00:281
301669910771,22cyclictest14-21ksoftirqd/007:50:140
301669910513,78cyclictest0-21swapper/008:30:130
301669910512,80cyclictest0-21swapper/012:35:100
301669910473,19cyclictest14-21ksoftirqd/007:20:110
301669910314,35cyclictest0-21swapper/007:40:110
301669910312,77cyclictest0-21swapper/007:30:130
301669910275,17cyclictest14-21ksoftirqd/010:30:230
301669910275,17cyclictest14-21ksoftirqd/010:30:230
301669910213,76cyclictest0-21swapper/010:20:250
301669910111,77cyclictest0-21swapper/010:10:120
301669910073,18cyclictest14-21ksoftirqd/007:35:130
30175999812,28cyclictest0-21swapper/110:45:131
30175999812,25cyclictest0-21swapper/111:15:231
3016699989,77cyclictest0-21swapper/008:40:110
30166999862,24cyclictest14123-21kworker/0:111:05:110
30166999861,25cyclictest14-21ksoftirqd/010:00:130
30175999712,26cyclictest0-21swapper/110:25:131
30175999611,22cyclictest0-21swapper/112:35:131
30166999663,21cyclictest14-21ksoftirqd/009:00:120
30166999614,25cyclictest0-21swapper/008:10:130
30166999612,29cyclictest0-21swapper/009:15:230
30175999513,23cyclictest0-21swapper/112:00:151
30175999511,22cyclictest0-21swapper/112:15:231
30166999511,25cyclictest0-21swapper/008:45:240
2840129522,25sleep00-21swapper/007:05:050
30175999413,60cyclictest0-21swapper/109:15:251
30175999413,25cyclictest0-21swapper/108:35:141
30175999413,25cyclictest0-21swapper/108:30:111
30175999413,24cyclictest0-21swapper/110:50:121
30175999411,25cyclictest0-21swapper/111:05:141
30175999411,25cyclictest0-21swapper/107:45:231
30175999411,25cyclictest0-21swapper/107:45:231
30175999411,21cyclictest0-21swapper/107:50:131
30166999453,27cyclictest14-21ksoftirqd/009:30:130
30175999312,27cyclictest0-21swapper/109:45:111
30175999312,24cyclictest0-21swapper/112:30:131
30175999311,26cyclictest0-21swapper/110:00:111
30166999354,28cyclictest14-21ksoftirqd/011:10:240
30166999348,31cyclictest14-21ksoftirqd/008:55:140
30175999211,25cyclictest0-21swapper/112:20:111
30175999211,24cyclictest0-21swapper/110:15:121
30175999211,24cyclictest0-21swapper/110:15:121
3016699929,68cyclictest9149-21taskset12:10:110
2994929215,30sleep10-21swapper/107:09:131
30166999153,27cyclictest14-21ksoftirqd/007:45:260
30166999153,27cyclictest14-21ksoftirqd/007:45:260
30166999047,31cyclictest14-21ksoftirqd/009:46:580
30166999012,64cyclictest0-21swapper/012:15:220
30166999010,67cyclictest0-21swapper/008:15:130
3017599899,22cyclictest0-21swapper/107:30:111
3017599898,22cyclictest0-21swapper/109:20:241
3017599897,30cyclictest31976-21munin-node11:40:121
30175998937,32cyclictest26-21ksoftirqd/108:50:151
30175998914,24cyclictest0-21swapper/107:35:161
30175998912,57cyclictest0-21swapper/111:35:131
30175998912,26cyclictest0-21swapper/112:05:161
30175998910,26cyclictest0-21swapper/109:35:121
30166998911,65cyclictest0-21swapper/012:25:110
3017599889,23cyclictest0-21swapper/107:15:141
30175998812,27cyclictest0-21swapper/110:55:121
30166998854,25cyclictest14-21ksoftirqd/008:35:150
30166998835,42cyclictest14-21ksoftirqd/007:55:150
3016699877,63cyclictest8555-21diskmemload09:10:130
30166998760,17cyclictest14-21ksoftirqd/011:00:220
30175998611,24cyclictest0-21swapper/112:25:121
3016699868,63cyclictest562-21runrttasks07:25:120
30166998626,45cyclictest14-21ksoftirqd/012:20:130
30166998612,62cyclictest0-21swapper/008:20:110
30166998612,62cyclictest0-21swapper/008:20:110
30166998611,62cyclictest0-21swapper/009:55:120
30166998611,61cyclictest0-21swapper/007:10:110
3016699857,61cyclictest9132-21taskset10:40:130
30166998517,28cyclictest30159-21cyclictest11:15:210
30166998513,59cyclictest0-21swapper/011:20:130
30166998511,60cyclictest0-21swapper/010:15:110
30166998511,60cyclictest0-21swapper/010:15:110
30166998511,59cyclictest0-21swapper/009:05:140
30166998511,59cyclictest0-21swapper/009:05:140
30175998411,23cyclictest0-21swapper/108:25:131
30166998445,29cyclictest14-21ksoftirqd/007:15:110
30166998436,32cyclictest14-21ksoftirqd/011:30:120
30166998412,61cyclictest0-21swapper/011:25:140
30166998410,63cyclictest0-21swapper/009:35:140
30166998234,34cyclictest14-21ksoftirqd/009:50:110
30166998234,34cyclictest14-21ksoftirqd/009:50:100
30166998110,56cyclictest0-21swapper/010:35:110
3017599809,25cyclictest19857-21apt-get09:40:151
3016699799,58cyclictest0-21swapper/008:00:120
30166997939,30cyclictest0-21swapper/010:05:150
3016699777,53cyclictest36-21kcompactd009:20:230
30166997737,29cyclictest0-21swapper/012:30:120
30166997729,28cyclictest0-21swapper/009:25:130
30166997713,52cyclictest0-21swapper/010:55:130
30166997635,30cyclictest0-21swapper/011:45:150
30166997633,32cyclictest0-21swapper/011:35:140
30175997412,24cyclictest0-21swapper/108:40:111
3017599739,24cyclictest25778-21apt-get11:25:151
30166997332,27cyclictest0-21swapper/011:40:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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