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2026-08-14 - 19:16
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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 14, 2026 12:45:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
268021120,7chrt2678-21apt08:00:001
16757991086,80cyclictest0-21swapper/007:45:150
167579910551,34cyclictest0-21swapper/008:30:120
167619910272,17cyclictest26-21ksoftirqd/107:40:111
1675799997,22cyclictest0-21swapper/007:50:120
16761999864,23cyclictest26-21ksoftirqd/108:55:171
16757999648,28cyclictest14-21ksoftirqd/009:20:120
16761999564,20cyclictest26-21ksoftirqd/108:20:151
16761999563,18cyclictest26-21ksoftirqd/107:35:141
16761999463,21cyclictest26-21ksoftirqd/108:00:121
16761999463,21cyclictest26-21ksoftirqd/108:00:121
16757999347,29cyclictest0-21swapper/011:15:120
1676199916,68cyclictest11065-21apt-get09:55:141
1676199916,68cyclictest11065-21apt-get09:55:141
16761999157,20cyclictest26-21ksoftirqd/111:30:041
16761999056,22cyclictest26-21ksoftirqd/112:15:151
1676199905,54cyclictest0-21swapper/110:45:331
16761998913,62cyclictest0-21swapper/108:35:151
16761998854,21cyclictest26-21ksoftirqd/111:25:141
16761998854,21cyclictest26-21ksoftirqd/107:30:161
16761998854,20cyclictest26-21ksoftirqd/112:35:131
1676199882,62cyclictest562-21runrttasks10:14:191
16757998812,21cyclictest0-21swapper/012:30:110
1676199878,67cyclictest2301-21apt-get09:30:121
1676199873,55cyclictest532-21seq09:25:061
16761998713,62cyclictest0-21swapper/111:50:131
1676199864,55cyclictest20662-21latency_hist07:20:011
16761998557,18cyclictest26-21ksoftirqd/108:15:131
16761998514,59cyclictest0-21swapper/111:00:131
16761998514,59cyclictest0-21swapper/108:45:151
16761998513,62cyclictest16751-21cyclictest11:20:111
16761998513,60cyclictest0-21swapper/111:05:111
16761998513,58cyclictest0-21swapper/110:55:141
16761998512,61cyclictest0-21swapper/110:25:141
16761998512,60cyclictest0-21swapper/110:00:131
16761998415,42cyclictest562-21runrttasks10:18:291
16761998412,60cyclictest0-21swapper/112:05:151
16761998348,21cyclictest26-21ksoftirqd/107:25:161
16761998314,57cyclictest0-21swapper/108:50:121
16761998313,60cyclictest0-21swapper/110:50:221
16761998312,59cyclictest0-21swapper/108:05:151
16761998312,58cyclictest0-21swapper/107:20:241
16761998213,60cyclictest0-21swapper/109:35:121
16761998212,60cyclictest0-21swapper/112:10:151
16761998212,60cyclictest0-21swapper/112:10:151
16761998212,57cyclictest0-21swapper/107:10:121
1675799826,26cyclictest14-21ksoftirqd/007:40:000
1676199818,59cyclictest26885-21apt-get10:40:151
16761998114,54cyclictest0-21swapper/112:20:141
16761998113,57cyclictest0-21swapper/111:35:141
16761998113,57cyclictest0-21swapper/111:10:131
16761998111,60cyclictest0-21swapper/110:20:131
1675799816,24cyclictest0-21swapper/009:15:110
1535228139,25sleep10-21swapper/107:05:221
16761998014,52cyclictest0-21swapper/109:40:141
16761998012,57cyclictest0-21swapper/109:00:121
16761998011,56cyclictest0-21swapper/110:05:121
1675799809,53cyclictest0-21swapper/010:35:120
16761997922,50cyclictest243-21systemd-journal12:00:341
16761997848,19cyclictest26-21ksoftirqd/110:35:131
16761997815,52cyclictest0-21swapper/109:50:121
1676199778,55cyclictest13374-21apt-get08:30:131
1675799778,25cyclictest14-21ksoftirqd/008:00:000
1675799776,22cyclictest0-21swapper/010:25:110
1676199767,59cyclictest29179-21apt-get09:15:111
16757997637,24cyclictest14-21ksoftirqd/007:40:130
16757997631,28cyclictest0-21swapper/012:20:130
1619327617,50sleep00-21swapper/007:06:000
1676199759,54cyclictest27268-21diskmemload09:10:131
1676199758,55cyclictest15848-21apt-get11:40:131
1675799757,52cyclictest0-21swapper/007:15:130
1675799757,22cyclictest14-21ksoftirqd/009:10:000
1675799756,52cyclictest0-21swapper/008:25:130
1676199748,53cyclictest6394-21apt-get08:10:141
1676199742,17cyclictest18067-21users08:40:381
1676199742,17cyclictest18067-21users08:40:381
16757997439,22cyclictest14-21ksoftirqd/011:10:110
16757997431,12cyclictest30474-21sshd10:50:040
1676199739,53cyclictest31796-21apt-get07:50:121
1676199739,51cyclictest17593-21apt-get11:45:141
1675799736,23cyclictest14-21ksoftirqd/012:15:000
1675799736,23cyclictest14-21ksoftirqd/012:15:000
1675799728,48cyclictest0-21swapper/010:30:120
1675799726,51cyclictest0-21swapper/009:55:160
1675799726,51cyclictest0-21swapper/009:55:160
1676199718,53cyclictest914-21apt-get12:30:141
1676199718,52cyclictest7591-21apt-get09:45:151
1676199718,51cyclictest11634-21apt-get08:25:121
1676199717,54cyclictest23334-21apt-get10:30:121
1676199715,59cyclictest0-21swapper/112:29:111
1675799717,18cyclictest0-21swapper/009:40:130
257522700,6chrt25747-21grep07:30:400
1675799706,55cyclictest15115-21apt-get08:35:130
1675799706,47cyclictest0-21swapper/011:35:110
1676199696,52cyclictest7005-21apt-get11:15:111
1676199696,52cyclictest21068-21apt-get11:55:121
1675799697,18cyclictest0-21swapper/010:15:140
1675799697,16cyclictest0-21swapper/011:45:150
1675799696,49cyclictest0-21swapper/010:00:110
1676199688,49cyclictest30061-21apt-get07:45:121
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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