From: "Michael Chan" <mchan@broadcom.com>
To: "Ben Greear" <greearb@candelatech.com>
Cc: "'netdev@oss.sgi.com'" <netdev@oss.sgi.com>
Subject: Re: BCM5704 performance questions.
Date: Fri, 10 Jun 2005 14:16:43 -0700 [thread overview]
Message-ID: <1118438203.5294.7.camel@rh4> (raw)
In-Reply-To: <42AA016C.9050801@candelatech.com>
On Fri, 2005-06-10 at 14:09 -0700, Ben Greear wrote:
> I commented out the code and ran the pktgen test again. It may be a small
> bit better, but not much: 770Mbps in one direction, 750Mbps in the other.
>
The latest tg3 driver will print out the dma_rwctrl at probe time. Can
you check the value to make sure ONE_DMA is disabled? Bit 14 sets
ONE_DMA.
> Have you done any tests with 2 tg3 NICs in a single machine to see if they
> can run at or near line speed (full duplex)?
>
Yes, we have years ago but not with the tg3 driver. We set up the 5704
to bridge (or route, I don't remember) one port to the other. It cannot
bridge at line-rate with the ONE_DMA workaround enabled.
next prev parent reply other threads:[~2005-06-10 21:16 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-06-10 0:38 BCM5704 performance questions Ben Greear
2005-06-09 23:56 ` Michael Chan
2005-06-10 1:24 ` Ben Greear
2005-06-10 0:37 ` Michael Chan
2005-06-10 21:09 ` Ben Greear
2005-06-10 21:16 ` Michael Chan [this message]
2005-06-10 22:35 ` Ben Greear
2005-06-10 22:43 ` David S. Miller
2005-06-10 21:33 ` Rick Jones
2005-06-10 21:56 ` Ben Greear
2005-06-10 22:03 ` Rick Jones
2005-06-10 22:25 ` Ben Greear
2005-06-10 14:03 ` Jason Lunz
2005-06-10 0:54 ` David S. Miller
2005-06-10 1:20 ` Ben Greear
2005-06-10 1:29 ` David S. Miller
2005-06-10 2:28 ` Ben Greear
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=1118438203.5294.7.camel@rh4 \
--to=mchan@broadcom.com \
--cc=greearb@candelatech.com \
--cc=netdev@oss.sgi.com \
/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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.