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2024-04-23 - 10:49

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #8, slot #4

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.
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 20 highest latencies:
System rack8slot4s.osadl.org (updated Tue Apr 23, 2024 00:44:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
26024902235198,24sleep60-21swapper/619:05:456
26026432227189,25sleep70-21swapper/719:07:557
26027262223193,19sleep40-21swapper/419:09:054
26026182222185,24sleep00-21swapper/019:07:320
26027412221168,18sleep10-21swapper/119:09:171
26025342218180,25sleep30-21swapper/319:06:223
26025242215156,46sleep20-21swapper/219:06:132
26026612209175,22sleep50-21swapper/519:08:095
260303599260,25cyclictest2716098-21dump-pmu-power22:25:016
260301999260,25cyclictest0-21swapper/022:25:010
260302199250,1cyclictest2774254-21munin-run00:04:591
260303799241,22cyclictest650-21dbus-daemon20:00:007
260303299240,22cyclictest0-21swapper/523:45:115
2603026992423,1cyclictest2774267-21idleruntime-cro00:05:003
260302699240,23cyclictest2692689-21awk21:45:013
260302699240,23cyclictest2658315-21idleruntime-cro20:45:003
2603024992424,0cyclictest0-21swapper/222:50:022
2603024992423,1cyclictest0-21swapper/200:35:132
260301999240,23cyclictest2617942-21perf19:35:000
2603037992321,1cyclictest0-21swapper/722:50:017
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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