RE: ppc405ex + gigabit ethernet

2009-07-06 Thread Feng Kan
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

Re: ppc405ex + gigabit ethernet

2009-07-03 Thread Lada Podivin
Many thanks for all responses! Now I know all I need to know :) ___ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev

Re: ppc405ex + gigabit ethernet

2009-07-03 Thread Lada Podivin
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

RE: ppc405ex + gigabit ethernet

2009-07-02 Thread LiuMing
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.

RE: ppc405ex + gigabit ethernet

2009-07-01 Thread Cote, Sylvain
> 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

RE: ppc405ex + gigabit ethernet

2009-07-01 Thread john . p . price
@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

Re: ppc405ex + gigabit ethernet

2009-07-01 Thread Lada Podivin
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

Re: ppc405ex + gigabit ethernet

2009-07-01 Thread Detlev Zundel
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

Re: ppc405ex + gigabit ethernet

2009-07-01 Thread 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 other hand, If I try to send 32KB chunk of data with jumbo frames tur

RE: ppc405ex + gigabit ethernet

2009-07-01 Thread 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, o