Subject: Re: mc0 performance
To: Tim Kelly <hockey@dialectronics.com>
From: Bruce O'Neel <edoneel@sdf.lonestar.org>
List: port-macppc
Date: 03/21/2005 15:22:49
Hi,

Thank you very very much!

This is perfect and I'll try it tonight.

Thanks!

cheers

bruce


On Mon, Mar 21, 2005 at 10:06:03AM -0500, Tim Kelly wrote:
> At 1:06 PM +0000 3/21/05, Bruce O'Neel wrote:
> >I just installed a 7300 and boy does mc0 run badly.
> >On a good scp I get 100k/sec and only 50% packet loss.  My guess
> >given that many folks don't have this is that it might be a
> >subversion specific problem with mc0, ie, some MACE chips work
> >correctly with the netbsd driver and some don't.
> 
> http://mail-index.netbsd.org/port-macppc/2005/01/13/0010.html
> 
> is a more recent thread.
> 
> The patch was commited:
> 
> http://mail-index.netbsd.org/source-changes/2005/01/15/0000.html
> 
> I have a complete rewrite of the DDBDMA engine for the mc* driver almost
> finished. I finally figured out what the channel errors were being caused
> by (it's actually not an error but an indication by mace for software flow
> control). Other things have kept me from finishing it. The rewrite should
> eliminate the last of the problems with the mc* driver. Most people won't
> see it, but the mc* driver will fail after several downloads of large files
> at the max throughput of the 10Mps network. It'll also fail after a
> get-put-get ftp combination at 10Mps.
> 
> The above patch will make mc quite useable for ssh and transfers below
> 500KB/s or so.
> 
> tim
> 
> 

-- 
edoneel@sdf.lonestar.org
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