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2025-11-03 - 11:50

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #2, 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: 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 rack2slot7s.osadl.org (updated Mon Nov 03, 2025 00:39:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2144889995850,5cyclictest2338064-21munin-run00:40:012
2144888995444,5cyclictest0-21swapper/123:59:101
2144889995143,5cyclictest422-21dbus-daemon22:25:332
2144888994938,6cyclictest0-21swapper/100:39:061
2144887994635,7cyclictest0-21swapper/021:24:120
2144889994537,5cyclictest2257526-21systemd-run22:50:022
2144889994438,3cyclictest0-21swapper/223:59:022
2144889994438,3cyclictest0-21swapper/223:45:012
2144889994434,6cyclictest2291451-21unixbench_multi23:34:152
2144889994433,8cyclictest421-21avahi-daemon23:49:012
2144889994431,10cyclictest421-21avahi-daemon22:08:402
2144887994436,5cyclictest2168953-21systemd-run20:30:020
2144889994335,4cyclictest0-21swapper/222:59:052
2144889994333,7cyclictest2195771-21unixbench-2d21:29:152
2144888994334,6cyclictest1-21systemd22:00:011
2144887994329,11cyclictest2279720-21threads23:19:160
2144889994234,5cyclictest2188894-21latency_hist21:20:022
2144888994234,5cyclictest2291935-21latency_hist23:35:021
2144888994233,4cyclictest0-21swapper/100:34:051
2144888994233,4cyclictest0-21swapper/100:34:051
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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