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2026-04-10 - 13:11
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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 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
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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