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2025-04-02 - 05:03

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, 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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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
Compare latency of primary with shadow system
Characteristics of the 20 highest latencies:
System rackeslot3s.osadl.org (updated Wed Apr 02, 2025 00:45:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4078011997227,13cyclictest4093193-21cat00:05:011
4078011997123,16cyclictest4078861-21cat19:25:021
4078021996924,14cyclictest4086378-21cut21:50:023
4078021996823,13cyclictest4088891-21cat22:40:033
4078011996722,14cyclictest4091721-21cut23:35:021
4078011996646,16cyclictest4080766-21sshd20:04:231
4078021996443,17cyclictest4083559-21sshd20:57:243
4078021996242,17cyclictest4094883-21sshd00:39:223
4078021996241,17cyclictest4078739-21munin-run19:25:003
4078011996245,14cyclictest4079460-21sshd19:38:221
4078011996242,17cyclictest4092062-21sshd23:41:231
4078011996240,15cyclictest306-21in:imuxsock21:05:001
4078021996142,13cyclictest4087985-21munin-run22:25:003
4078021996140,17cyclictest4086646-21sshd21:56:233
4078021996140,17cyclictest4080021-21munin-run19:50:013
4078021996138,11cyclictest4080786-21munin-plugin-st20:05:003
4078019996133,10cyclictest30-21ksoftirqd/221:46:222
4078011996147,10cyclictest4080223-21sshd19:50:231
4078011996147,10cyclictest4080223-21sshd19:50:221
407800799616,9cyclictest12-21ksoftirqd/019:30:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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