Re: ppc405ex + gigabit ethernet

[Detlev Zundel <dzu@denx.de>]

Hi Lada,

> 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?

On our kilauea in the lab:

-bash-3.2# src/netperf -t UDP_STREAM -p 7776 -H 192.168.1.1 -fK -- -m 32768
UDP UNIDIRECTIONAL SEND TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 192.168.1.1 (192.168.1.1) port 0 AF_INET
Socket  Message  Elapsed      Messages                
Size    Size     Time         Okay Errors   Throughput
bytes   bytes    secs            #      #   KBytes/sec

106496   32768   10.00        3601      0    11519.64
124928           10.00        3601           11519.64

-bash-3.2# grep cpu /proc/cpuinfo 
cpu             : 405EX
-bash-3.2# cat /proc/version
Linux version 2.6.29.4 (dzu@pollux.denx.de) (gcc version 4.2.2) #9 Wed Jun 17 11:18:46 CEST 2009
-bash-3.2# 

I can send you the kernel+dtb that I used for testing offlist.

Cheers
  Detlev

--
DENX Software Engineering GmbH,      MD: Wolfgang Denk & Detlev Zundel
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