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2026-04-10 - 03:52
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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 Apr 10, 2026 00:44:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
139189911685,20cyclictest14-21ksoftirqd/021:45:230
139189911685,20cyclictest14-21ksoftirqd/021:45:230
2096221140,6chrt20935-21apache200:00:030
139209911312,79cyclictest0-21swapper/100:30:151
139209911262,31cyclictest26-21ksoftirqd/121:05:111
139209911215,78cyclictest0-21swapper/123:30:111
139209911211,22cyclictest0-21swapper/122:50:141
139209911113,78cyclictest0-21swapper/121:25:121
139209911112,81cyclictest0-21swapper/121:20:241
139189911078,19cyclictest14-21ksoftirqd/020:05:120
139209910912,78cyclictest0-21swapper/121:50:231
139209910911,76cyclictest0-21swapper/119:25:111
139209910910,78cyclictest0-21swapper/122:00:131
139189910982,15cyclictest14-21ksoftirqd/021:10:170
13920991086,34cyclictest562-21runrttasks19:20:221
139209910811,77cyclictest0-21swapper/123:40:151
139209910711,76cyclictest0-21swapper/121:15:131
139209910711,75cyclictest0-21swapper/122:10:131
139209910656,31cyclictest26-21ksoftirqd/122:55:101
139209910611,74cyclictest0-21swapper/123:05:111
139209910513,21cyclictest0-21swapper/119:35:141
139209910512,70cyclictest0-21swapper/122:40:121
139209910411,73cyclictest0-21swapper/120:10:111
139209910314,72cyclictest0-21swapper/123:35:151
139189910375,19cyclictest14-21ksoftirqd/022:10:110
139209910215,66cyclictest0-21swapper/120:55:151
139209910112,20cyclictest0-21swapper/120:40:111
139189910174,18cyclictest14-21ksoftirqd/022:25:130
13920999611,60cyclictest0-21swapper/123:00:111
13920999610,19cyclictest0-21swapper/119:10:131
13920999511,20cyclictest0-21swapper/122:25:161
13918999562,26cyclictest14-21ksoftirqd/020:45:140
13920999411,20cyclictest0-21swapper/121:40:141
13920999312,19cyclictest0-21swapper/120:35:151
13920999312,19cyclictest0-21swapper/119:55:151
13920999310,20cyclictest0-21swapper/120:00:131
13920999310,20cyclictest0-21swapper/120:00:131
13918999314,66cyclictest0-21swapper/020:20:230
13920999111,21cyclictest0-21swapper/119:50:121
13918999153,25cyclictest14-21ksoftirqd/000:10:130
13918999112,69cyclictest0-21swapper/021:05:140
1392099909,19cyclictest0-21swapper/123:15:151
13920999012,57cyclictest0-21swapper/100:05:111
13918999059,20cyclictest14-21ksoftirqd/000:15:230
13918999012,67cyclictest0-21swapper/022:05:130
13918999012,33cyclictest0-21swapper/019:45:130
1392099896,21cyclictest30169-21apt-get00:25:151
1392099888,20cyclictest0-21swapper/100:15:261
13918998857,19cyclictest0-21swapper/023:40:140
13918998812,33cyclictest0-21swapper/023:05:130
13920998715,62cyclictest0-21swapper/119:45:141
13918998743,33cyclictest14-21ksoftirqd/023:30:130
1392099866,24cyclictest1725-21apt-get21:35:251
13918998655,25cyclictest14-21ksoftirqd/023:15:150
13918998652,23cyclictest14-21ksoftirqd/023:45:130
1331428611,60sleep00-21swapper/019:05:310
1392099859,20cyclictest7230-21apt-get20:20:251
13920998511,64cyclictest0-21swapper/121:30:141
13920998511,20cyclictest0-21swapper/100:10:141
13920998311,21cyclictest0-21swapper/120:15:141
13918998350,25cyclictest14-21ksoftirqd/020:50:130
13918998348,25cyclictest14-21ksoftirqd/021:40:120
1392099829,21cyclictest0-21swapper/123:45:121
13918998247,23cyclictest14-21ksoftirqd/019:40:110
13918998242,28cyclictest14-21ksoftirqd/019:15:130
1392099817,19cyclictest1636-21apt-get20:05:101
1392099816,18cyclictest16259-21apt-get19:15:121
13920998112,60cyclictest0-21swapper/100:35:111
13920998110,18cyclictest0-21swapper/120:50:151
13918998152,16cyclictest0-21swapper/020:55:120
13918998151,19cyclictest0-21swapper/019:25:120
13918998147,23cyclictest14-21ksoftirqd/000:00:150
13918998145,24cyclictest14-21ksoftirqd/022:20:140
13918998145,23cyclictest14-21ksoftirqd/000:20:160
13918998044,27cyclictest14-21ksoftirqd/020:30:140
13918998044,24cyclictest14-21ksoftirqd/019:55:120
13918998039,30cyclictest14-21ksoftirqd/023:20:130
1392099796,21cyclictest17265-21apt-get23:50:131
13918997940,28cyclictest14-21ksoftirqd/020:25:150
13918997932,36cyclictest14-21ksoftirqd/022:45:150
1392099788,20cyclictest19303-21apt-get23:55:231
1392099787,19cyclictest16007-21apt-get20:45:141
1392099786,21cyclictest28435-21apt-get00:20:151
1391899788,57cyclictest11978-21taskset23:35:140
13918997837,30cyclictest14-21ksoftirqd/022:30:120
1392099778,17cyclictest25357-21apt-get19:40:131
1392099777,24cyclictest8975-21apt-get20:25:131
1392099777,18cyclictest16384-21apt-get22:15:141
13920997718,17cyclictest457-21dbus-daemon23:25:001
13920997711,20cyclictest0-21swapper/122:05:151
1391899779,56cyclictest0-21swapper/000:30:120
13918997738,29cyclictest14-21ksoftirqd/022:35:140
13918997725,42cyclictest14-21ksoftirqd/000:35:130
13918997710,55cyclictest3430-21sshd20:10:100
1392099768,18cyclictest8492-21apt-get23:25:141
13920997617,19cyclictest28475-21cron22:50:001
1391899769,54cyclictest14272-21sshd20:40:130
13918997641,28cyclictest14-21ksoftirqd/000:25:140
13918997635,30cyclictest14-21ksoftirqd/021:55:160
13918997612,54cyclictest0-21swapper/022:55:110
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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