Ethernet testing of ubuntu-14.04-headless-z7020-20150130.1

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Ethernet testing of ubuntu-14.04-headless-z7020-20150130.1

Postby boeserbaer » Sun Mar 29, 2015 7:37 pm

Hi All,

I am very pleased to report that ethernet performance is significantly improved versus the jun2014 HDMI release. On the Jun2014 release the best I was able to achieve was 35MBytes/s (where a Mbyte is 1024*1024 bytes). I am now getting 69.5MBytes/s sustained (30+ minutes). Now if I could only get it up to 85MBytes/s ;)

Both tests were performed using a QT based multi-threaded server on a MAC laptop, with the Parallella running as a client with 2 threads and a shared memory pool (1 producer thread which presently just manipulates semaphores, until I get DMA working for my FPGA project, and 1 consumer thread which writes to the TCP socket when data is ready.)

TOP reports 110% CPU usage for this scenario. (1.1 cores used).

64kBytes payload per write. Application on Parallella built using QT 5.2.1.
Tested both direct connected to a dedicated subnet, and through an external switch D-LINK DGS-1005D (still on a dedicated subnet).

Best Regards,
Mike
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Re: Ethernet testing of ubuntu-14.04-headless-z7020-20150130

Postby aolofsson » Mon Mar 30, 2015 12:28 am

Mike,
Great to hear! Yes, this is something we fixed in our tree a while back and reported, but this is the first time it has been part of the official release.
Look forward to hearing more about where you are heading with your work?
Andreas
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