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2025-04-02 - 05:24

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 Wed Apr 02, 2025 00:43:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
616521740,5sleep12789899cyclictest21:57:391
120802950,2sleep311905-21latency_hist00:25:093
2789499936,52cyclictest0-21swapper/020:45:220
2789499855,42cyclictest11971-21ssh21:20:200
13872850,2sleep20-21swapper/221:50:362
13872850,2sleep20-21swapper/221:50:362
54942800,2sleep20-21swapper/223:30:082
27894997927,22cyclictest0-21swapper/023:45:160
27894997425,9cyclictest0-21swapper/019:10:210
27894997315,35cyclictest31043-21idleruntime-cro00:05:070
2789499726,9cyclictest13-21rcuc/020:10:180
27894997214,10cyclictest0-21swapper/022:20:190
27894996931,9cyclictest0-21swapper/021:12:440
27894996813,12cyclictest0-21swapper/020:20:220
2790199665,45cyclictest0-21swapper/223:10:142
2790199665,45cyclictest0-21swapper/223:10:142
2790199653,43cyclictest31193-21/usr/sbin/munin20:55:332
2790199652,6cyclictest5680-21apt-get23:30:172
2789499652,43cyclictest0-21swapper/019:20:210
2790199641,4cyclictest1158-21snmpd23:19:302
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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