Subject: Re: ppc405ex + gigabit ethernet
Hi Sylvain,
the interrupt coalescing sounds like good idea - I'm surprised this
feature is missing in the original ibm_newemac driver. You wrote you
had got this optimisation directly from AMCC. Is it part of any
framework? I'm just wondering h
Many thanks for all responses! Now I know all I need to know :)
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Hi Sylvain,
the interrupt coalescing sounds like good idea - I'm surprised this
feature is missing in the original ibm_newemac driver. You wrote you
had got this optimisation directly from AMCC. Is it part of any
framework? I'm just wondering how one can obtain it. I tried to find
any suitable pat
x27;s hard
to say how can you further improve.
BR
Ming
Date: Wed, 1 Jul 2009 13:24:41 +0200
Subject: Re: ppc405ex + gigabit ethernet
From: lada.podi...@gmail.com
To: eeming...@hotmail.com
CC: linuxppc-...@ozlabs.org
Thank you for your reply!
Yes, I agree the CPU is the bottleneck.
> 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 desk
@lists.ozlabs.org
[mailto:linuxppc-dev-bounces+john.p.price=l-3com@lists.ozlabs.org] On
Behalf Of Lada Podivin
Sent: Wednesday, July 01, 2009 7:25 AM
To: LiuMing
Cc: linuxppc-...@ozlabs.org
Subject: Re: ppc405ex + gigabit ethernet
Thank you for your reply!
Yes, I agree the CPU is the bottleneck
Eh! I mean Mb/s NOT Kb/s! Sorry!
2009/7/1 Lada Podivin
> Thank you for your reply!
> Yes, I agree the CPU is the bottleneck. But I have performed more tests
> with the netperf tool and results seem strange to me. If I send 800 B of
> data, the resulting speed is aproximately 100 Kb/s. On the oth
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 th
Thank you for your reply!
Yes, I agree the CPU is the bottleneck. But I have performed more tests with
the netperf tool and results seem strange to me. If I send 800 B of data,
the resulting speed is aproximately 100 Kb/s. On the other hand, If I try to
send 32KB chunk of data with jumbo frames tur
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, o
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