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2025-11-16 - 14:09
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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 Sun Nov 16, 2025 12:45:04)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
7585210214,37sleep00-21swapper/007:09:570
7722998314,16cyclictest0-21swapper/008:20:130
772299824,72cyclictest0-21swapper/009:55:140
772299824,70cyclictest24722-21irqstats12:30:250
7722998213,55cyclictest0-21swapper/010:50:140
772299816,59cyclictest27435-21apt-get09:35:130
7722998114,58cyclictest0-21swapper/010:35:140
7722998114,52cyclictest0-21swapper/009:40:150
7722998035,39cyclictest24831-21python309:25:550
772299794,69cyclictest73272chrt11:40:280
7722997826,46cyclictest448-21dbus-daemon10:20:010
7722997815,49cyclictest0-21swapper/008:00:170
7722997813,53cyclictest0-21swapper/011:00:250
772299776,60cyclictest11989-21apt-get11:55:140
772299776,57cyclictest3795-21apt-get10:00:160
7722997714,55cyclictest0-21swapper/009:30:130
7722997714,53cyclictest0-21swapper/009:45:140
7722997714,50cyclictest0-21swapper/008:40:160
7722997714,50cyclictest0-21swapper/008:40:150
7722997712,55cyclictest0-21swapper/007:50:130
7722997711,56cyclictest0-21swapper/010:45:160
772299768,58cyclictest17046-21apt-get07:35:180
7722997613,53cyclictest0-21swapper/009:50:140
7722997613,52cyclictest0-21swapper/008:30:170
772299757,59cyclictest10829-21apt-get10:20:140
772299756,60cyclictest13750-21apt-get12:00:160
772299756,60cyclictest13750-21apt-get12:00:160
772299753,66cyclictest22076-21sshd07:47:480
7722997514,50cyclictest0-21swapper/009:20:160
7722997513,52cyclictest0-21swapper/010:55:170
7722997513,51cyclictest0-21swapper/007:25:120
7722997513,49cyclictest0-21swapper/012:05:150
7722997512,50cyclictest0-21swapper/008:15:140
7722997511,52cyclictest0-21swapper/011:35:160
772299746,59cyclictest12567-21apt-get10:25:130
772299745,63cyclictest461-21rs:main0
7722997423,46cyclictest19865-21sort07:40:370
7722997420,49cyclictest254-21systemd-journal10:44:090
7722997414,51cyclictest0-21swapper/008:10:140
7722997414,49cyclictest0-21swapper/011:50:140
7722997414,48cyclictest0-21swapper/011:10:150
7722997413,51cyclictest0-21swapper/012:35:170
7722997413,47cyclictest0-21swapper/009:15:140
7722997413,47cyclictest0-21swapper/009:15:130
7722997412,52cyclictest0-21swapper/007:30:170
7722997412,52cyclictest0-21swapper/007:10:120
7722997412,51cyclictest0-21swapper/012:15:150
7722997411,51cyclictest0-21swapper/008:35:160
598227429,33sleep10-21swapper/107:05:131
772299734,61cyclictest3218-21apt-get11:30:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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