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2026-05-13 - 13:54
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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 50 highest latencies:
System rack3slot6.osadl.org (updated Wed May 13, 2026 12:44:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
17739911368,32cyclictest26-21ksoftirqd/108:30:121
17739911067,29cyclictest26-21ksoftirqd/110:55:111
17709910875,22cyclictest14-21ksoftirqd/008:35:130
17739910658,34cyclictest26-21ksoftirqd/110:40:111
17739910628,25cyclictest0-21swapper/110:00:151
17739910561,31cyclictest26-21ksoftirqd/109:15:151
17739910354,36cyclictest26-21ksoftirqd/109:45:141
17739910351,39cyclictest26-21ksoftirqd/108:05:241
17739910247,37cyclictest26-21ksoftirqd/109:30:131
1773999916,64cyclictest0-21swapper/108:40:231
1773999848,32cyclictest26-21ksoftirqd/109:10:141
1773999813,64cyclictest0-21swapper/108:25:221
177099989,77cyclictest18984-21apt-get12:30:120
1773999612,64cyclictest0-21swapper/109:00:121
1773999546,30cyclictest26-21ksoftirqd/109:50:111
1773999542,33cyclictest26-21ksoftirqd/112:10:141
1773999513,64cyclictest0-21swapper/111:25:231
1773999512,63cyclictest0-21swapper/110:05:111
1773999511,24cyclictest0-21swapper/108:20:141
1773999412,59cyclictest0-21swapper/110:25:141
1773999411,62cyclictest0-21swapper/108:45:111
177099949,73cyclictest12813-31find07:40:120
1770999458,24cyclictest14-21ksoftirqd/011:05:120
122629422,27sleep00-21swapper/007:06:070
1773999344,36cyclictest26-21ksoftirqd/108:10:121
1773999313,57cyclictest0-21swapper/109:20:131
1773999312,59cyclictest0-21swapper/110:35:131
1773999212,59cyclictest0-21swapper/112:20:121
1773999113,55cyclictest0-21swapper/107:25:121
1773999013,59cyclictest0-21swapper/107:35:121
1773999012,57cyclictest0-21swapper/107:20:151
1773999011,23cyclictest0-21swapper/110:50:131
1773998940,34cyclictest0-21swapper/110:45:241
1773998912,57cyclictest0-21swapper/111:15:121
1773998812,56cyclictest0-21swapper/111:45:131
1770998813,64cyclictest0-21swapper/010:45:230
1773998637,34cyclictest0-21swapper/112:05:111
1773998636,32cyclictest0-21swapper/109:35:131
1773998632,36cyclictest26-21ksoftirqd/112:00:131
1773998613,55cyclictest0-21swapper/109:25:111
1773998611,53cyclictest0-21swapper/112:35:121
1773998611,22cyclictest0-21swapper/109:05:101
1770998620,19cyclictest243-21systemd-journal10:33:340
1770998612,61cyclictest0-21swapper/011:00:160
177399857,53cyclictest6717-21runrttasks11:55:131
1773998513,50cyclictest0-21swapper/111:50:101
1770998516,63cyclictest243-21systemd-journal12:39:020
1770998516,59cyclictest0-21swapper/011:25:240
1770998421,18cyclictest2580-21seq11:40:360
1770998411,63cyclictest0-21swapper/007:20:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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