From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <3CFF9903.9000203@embeddededge.com> Date: Thu, 06 Jun 2002 13:16:51 -0400 From: Dan Malek MIME-Version: 1.0 To: acurtis@onz.com Cc: Ppc Developers Subject: Re: 8260 Network Performance update References: Content-Type: text/plain; charset=us-ascii; format=flowed Sender: owner-linuxppc-dev@lists.linuxppc.org List-Id: Allen Curtis wrote: > There is a slight improvement when you increase the number of buffers from > 16 (default) to 32. There does not appear to be any benefit beyond that. That isn't the number of buffers, it's the number of buffer pages, so don't go overboard allocating these. The 8260 is going to fill buffers and shove packets up the IP stack as fast as they appear on the wire. Adding buffers at the driver level will just cover up processing latencies by the application. > I am guessing that the problem is not in the driver unless the driver is > suppose to enforce some soft of fair usage algorithm. Is there a network > usage scheduler of some kind? The only thing that will happen is the IP stack will start tossing packets if there is a memory shortfall. > ..... I do not have this problem on a x86 RedHat > system... Are you doing _exactly_ the same thing? It still looks like you have a hardware configuration problem on the link, because I know other boards will operate with the same software at the limit of the 10 or 100 Mbit throughput. -- Dan ** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/