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2025-07-02 - 07:29

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, slot #7

Rack #0/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #1/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #2/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #3/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #4/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #5/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #6/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #7/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #8/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #9/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #a/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #b/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #c/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #d/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #e/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #f/#0 #1 #2 #3 #4 #5 #6 #7 #8 
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Click here to display the system's profile data or here to proceed to next system.
Click on a legend element to toggle display of that core, ctrl-click inverts display, shift-click enables all.

Data to construct the above plot have been generated using the RT test utility cyclictest.

Total number of samples: 50.5 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 20 highest latencies:
System rack5slot7s.osadl.org (updated Wed Jul 02, 2025 00:45:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
10437224602200,101sleep00-21swapper19:07:040
10815991609,127cyclictest24008-21cat23:45:030
108159915913,121cyclictest15960-21munin-run19:40:020
108159915822,29cyclictest31520-21apt-get21:15:230
108159915820,23cyclictest18672-21apt-get23:15:500
108159915810,124cyclictest592-21latency_hist21:25:050
108159915718,115cyclictest17425-21memory23:05:490
108159915715,119cyclictest2820-21ntp_states21:35:510
108159915614,38cyclictest31291-21cat00:30:040
108159915614,27cyclictest24318-21/usr/sbin/munin20:30:500
108159915611,25cyclictest28027-21cat00:10:040
108159915519,36cyclictest20079-21apt-get20:05:150
108159915512,118cyclictest7446-21modprobe22:05:020
108159915510,120cyclictest11366-21cut19:10:580
108159915430,34cyclictest0-21swapper00:35:260
108159915414,117cyclictest12750-21apt19:20:020
108159915412,117cyclictest29013-21apt21:00:020
108159915412,116cyclictest25141-21ntpq23:50:460
108159915341,91cyclictest30109-21kernelversion21:05:410
108159915317,113cyclictest31039-21ntp_states21:10:520
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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