From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <3BF1522D.1010706@embeddededge.com> Date: Tue, 13 Nov 2001 12:02:37 -0500 From: Dan Malek MIME-Version: 1.0 To: Ricardo Scop Cc: linuxppc-embedded@lists.linuxppc.org Subject: Re: Linuxppc and MPC8255 routing performance References: <01111314034801.01064@scop.digitel.com.br> Content-Type: text/plain; charset=us-ascii; format=flowed Sender: owner-linuxppc-embedded@lists.linuxppc.org List-Id: Ricardo Scop wrote: > Nevertheless, I'm aware that using local bus memory for I/O data flowing > between CPM and CPU may improve performance in some Linux applications, so I > would like to experiment with this. You don't need this as a solution to your performance troubles. I have been experimenting with using this space for socket buffers, but unless you have something else on the bus consuming the cycles, I haven't seen any benefit. It could be very useful for custom network applications, but there isn't anything Linux will do. Some systems just toss this space into the general free memory pool, just remember you can't access it over the 60x bus. -- Dan ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/