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2025-12-18 - 21:19

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #7, slot #3

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: 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 20 highest latencies:
System rack7slot3s.osadl.org (updated Thu Dec 18, 2025 12:43:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2954822310,2sleep10-21swapper/107:05:291
3030899967,25cyclictest0-21swapper/009:20:090
3030899842,41cyclictest0-21swapper/010:20:130
3030899772,37cyclictest0-21swapper/007:45:170
30308997315,46cyclictest101ktimersoftd/009:00:150
3030899705,43cyclictest0-21swapper/007:50:250
3030899676,14cyclictest0-21swapper/009:25:170
30308996721,31cyclictest20277-21latency_hist11:10:040
3030899651,30cyclictest0-21swapper/010:15:140
30308996435,16cyclictest0-21swapper/007:15:150
3030899642,44cyclictest14102-21grep10:50:310
3030899637,25cyclictest0-21swapper/008:55:310
3030899633,42cyclictest0-21swapper/009:15:040
3030899631,43cyclictest8069-21fschecks_time10:35:210
3030899631,39cyclictest18628-21latency_hist11:05:050
3030899621,58cyclictest238552sleep009:50:180
3030899621,58cyclictest238552sleep009:50:180
3030899611,24cyclictest18068-21unixbench_multi12:30:310
3030899606,39cyclictest7984-21timerandwakeup07:35:310
3030899606,28cyclictest16642-21idleruntime-cro11:00:040
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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