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2026-05-05 - 21:53
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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 Tue May 05, 2026 12:45:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
830721260,6chrt8303-21grep08:40:380
6614210721,40sleep00-21swapper/007:07:380
7017999476,13cyclictest0-21swapper/010:30:230
7017998863,12cyclictest14-21ksoftirqd/010:50:130
7017998862,13cyclictest14-21ksoftirqd/009:55:140
7017998660,13cyclictest14-21ksoftirqd/008:15:110
7017998158,13cyclictest14-21ksoftirqd/012:35:110
7017997951,18cyclictest14-21ksoftirqd/007:10:130
7017997652,14cyclictest14-21ksoftirqd/008:45:110
701799747,56cyclictest10892-21apt-get10:35:120
7017997410,22cyclictest0-21swapper/012:30:330
7021997240,21cyclictest26-21ksoftirqd/112:05:121
7017997140,18cyclictest106932sleep008:50:120
661227114,45sleep10-21swapper/107:07:371
217602710,6sleep021763-21sed09:20:260
701799708,55cyclictest0-21swapper/011:40:130
701799707,16cyclictest11124-21apt-get07:20:120
7017997016,26cyclictest19497-21turbostat11:00:000
7017997015,29cyclictest13894-21grep07:25:370
297332700,7sleep0171rcuc/011:25:360
7021996932,13cyclictest26-21ksoftirqd/108:25:211
7017996917,46cyclictest0-21swapper/010:25:130
7017996917,46cyclictest0-21swapper/010:25:130
7017996917,25cyclictest24557-21grep07:55:390
7017996917,25cyclictest19833-21apt-get12:30:010
7017996917,19cyclictest18102-21sh07:40:010
7017996916,28cyclictest28698-21grep08:10:010
7017996916,20cyclictest1-21systemd11:20:000
7017996915,29cyclictest2506-21sort08:25:350
7017996844,12cyclictest25268-21apt-get08:00:120
7017996840,14cyclictest0-21swapper/007:45:120
7017996839,18cyclictest9362-21apt-get07:15:140
7017996816,26cyclictest3441-21awk10:15:000
7017996816,26cyclictest32532-21expr11:35:170
7017996816,25cyclictest6939-21turbostat.cron10:25:000
7017996816,25cyclictest31066-21munin-run09:55:000
7017996816,21cyclictest3651-21apt-get08:30:130
7017996816,21cyclictest23512-21cstates11:10:180
7017996816,21cyclictest17805-21awk12:25:000
7017996816,21cyclictest17805-21awk12:25:000
7017996816,19cyclictest11117-21uname12:05:250
7017996815,28cyclictest15781-21latency_hist09:05:010
7017996815,22cyclictest13170-21irqstats10:40:250
7017996815,21cyclictest27010-21taskset11:20:100
7017996815,20cyclictest15748-21awk12:20:010
91382670,8chrt0-21swapper/012:00:170
7021996711,34cyclictest0-21swapper/109:05:081
7017996718,23cyclictest16257-21df09:05:200
7017996717,24cyclictest17547-21diskmemload09:10:150
7017996716,27cyclictest989-21sed08:20:360
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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