ppc405ex + gigabit ethernet

[LiuMing]

Hi,

According to our experience on PPC405 + Gigabit Enet, your result is already very reasonable. For UDP transmission, it can be around 400 Kb/s because of the CPU bottleneck (in our case 300 MHz ppc405). If you want to further improve it, a faster CPU is needed to process the TCP/IP stack, or you may buy commercial TCP/IP stack rather than using the free Linux one. 

 

BR

Ming
 


Date: Tue, 30 Jun 2009 15:58:53 +0200
Subject: ppc405ex + gigabit ethernet
From: lada.podivin at gmail.com
To: linuxppc-dev at ozlabs.org

Hi,

I benchmarked performance of my network, which contains ppc405EX (Kilauea board, kernel 2.6.30 from Denx) connected with a linux desktop via gigabit ethernet. I used the netperf tool: 

netperf -t UDP_STREAM -H 192.168.1.1 -- -m 32768

So I was sending UDP packets to the desktop. The resulting speed was about 370 Kb/s. I tried to send the packets to several different computers - with the same result. So the ppc board is the bottleneck in this case.

Is there any possibility to improve the gigabit capabilities of the ppc405EX? Is there anyone who achieved a better performance with ppc4xx boards?

Thanks!

Best,
Lada Podivin


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