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2023-09-23 - 19:01

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 
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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 Sat Sep 23, 2023 12:45:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
195000299116107,7cyclictest12-21ksoftirqd/009:40:010
1950002998884,2cyclictest0-21swapper/009:00:020
1950002998884,2cyclictest0-21swapper/009:00:010
1950011997928,47cyclictest1960829-21tr10:40:002
1950013997126,9cyclictest37-21ksoftirqd/307:40:003
195001199692,14cyclictest1966533-21munin-run12:30:012
1950006996922,41cyclictest274-21dbus-daemon11:30:001
195000699692,17cyclictest1956428-21munin-run09:15:011
1950002996726,8cyclictest0-21swapper/012:00:010
1950002996726,8cyclictest0-21swapper/012:00:010
1950011996522,38cyclictest1-21systemd11:35:012
195001199652,16cyclictest1954599-21munin-run08:40:002
195001199652,15cyclictest1953534-21sshd08:17:302
1950006996514,9cyclictest1955600-21sshd08:56:301
1950006996514,9cyclictest1955600-21sshd08:56:301
195000699635,12cyclictest1962872-21cron11:20:001
195001199623,14cyclictest1960306-21munin-run10:30:002
195001199622,14cyclictest1955111-21cron08:50:002
195001199622,12cyclictest1952277-21munin-run07:55:012
195000699623,19cyclictest1966698-21latency_hist12:30:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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