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2024-04-16 - 12:05

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, 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 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
Compare latency of primary with shadow system
Characteristics of the 20 highest latencies:
System rackeslot4s.osadl.org (updated Tue Apr 16, 2024 00:44:05)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
278686994539,4cyclictest596191-21latency_hist23:19:591
278686994135,4cyclictest559264-21latency_hist22:55:001
278694993836,1cyclictest683342-21fwupd00:16:023
278689993735,1cyclictest119-1kworker/2:1H+kblockd00:16:022
278689993631,3cyclictest514778-21ssh22:25:122
278684993629,5cyclictest529288-21latency_hist22:35:000
278684993228,3cyclictest330523-21apt-get20:00:060
278689993127,3cyclictest440113-21gpgv21:35:012
278686993128,2cyclictest392237-21gpgv21:00:001
278686993126,3cyclictest397984-21apt-get21:05:131
278689993027,2cyclictest74-21kswapd021:55:002
278686993027,2cyclictest432910-21apt-get21:30:121
27868699300,29cyclictest1-21systemd22:50:011
278684993026,3cyclictest462618-21kworker/u8:0+events_unbound22:00:140
278686992926,2cyclictest633282-21kworker/u8:2+flush-259:000:00:001
278694992818,8cyclictest309453-21gpgv19:40:003
278689992824,3cyclictest74-21kswapd022:50:012
278689992823,3cyclictest314900-21latency_hist19:45:022
278689992822,4cyclictest477449-21latency_hist22:00:012
278686992824,3cyclictest430143-21kworker/u8:3+flush-259:021:55:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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