linuxppc-dev.lists.ozlabs.org archive mirror
 help / color / mirror / Atom feed
From: Stefan Roese <sr@denx.de>
To: linuxppc-dev@ozlabs.org
Cc: "Donasch, Ingo @ SDS" <Ingo.Donasch@l-3com.com>
Subject: Re: slow Kilauea TCP throughput?
Date: Thu, 13 Mar 2008 17:21:24 +0100	[thread overview]
Message-ID: <200803131721.24371.sr@denx.de> (raw)
In-Reply-To: <9E33F44949583B4597BDA2D06042567003734A0F@FLS-EXCHANGE.corp.sds.l-3com.com>

On Wednesday 12 March 2008, Donasch, Ingo @ SDS wrote:
> I have a project where I would like to use the AMC405EX under Linux for
> high speed data acquisition. I have the Kilauea board in the lab but
> measured only 150Mbit/s TCP throughput (outbound) with iperf. I need
> twice of that and actually expecting 3x higher bandwidth from that
> architecture.

I'm not sure if 3 times the performace will be possible. Why did you expect 
such a performance btw?

> what is it that I'm missing?
> can anybody confirm my results or tell me what am I doing wrong?

I just ran some iperf tests and they show similar results. I'll currently 
comparing them to other 4xx platforms. Perhaps this gives some infos on what 
is happening here and where the bottleneck lies.

Best regards,
Stefan

=====================================================================
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: +49-8142-66989-0 Fax: +49-8142-66989-80  Email: office@denx.de
=====================================================================

      reply	other threads:[~2008-03-13 16:21 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-03-12 11:59 slow Kilauea TCP throughput? Donasch, Ingo @ SDS
2008-03-13 16:21 ` Stefan Roese [this message]

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=200803131721.24371.sr@denx.de \
    --to=sr@denx.de \
    --cc=Ingo.Donasch@l-3com.com \
    --cc=linuxppc-dev@ozlabs.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).