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2024-03-02 - 02:28

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, slot #6

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 10 highest latencies:
System rackeslot6s.osadl.org (updated Fri Mar 01, 2024 12:45:12)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
608725997428,12cyclictest12-21ksoftirqd/010:25:200
60873199732,66cyclictest616848-21/usr/sbin/munin07:55:411
60873199732,66cyclictest616848-21/usr/sbin/munin07:55:401
60873199721,66cyclictest663213-21/usr/sbin/munin12:25:361
60873199721,65cyclictest627176-21/usr/sbin/munin08:55:371
60873199721,65cyclictest627176-21/usr/sbin/munin08:55:371
60873199721,65cyclictest618570-21apt-get08:05:261
60873199721,65cyclictest618570-21apt-get08:05:251
60873199711,65cyclictest636572-21/usr/sbin/munin09:50:401
60873199702,63cyclictest640411-21/usr/sbin/munin10:10:361
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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