On Sat, Jan 05, 2008 at 01:38:17PM +0100, Stefan Roese wrote: > On Saturday 05 January 2008, Benjamin Herrenschmidt wrote: > > On Sat, 2008-01-05 at 10:50 +0100, Stefan Roese wrote: > > > Performance tests done by AMCC have shown that 256 buffer increase the > > > performance of the Linux EMAC driver. So let's update the default > > > values to match this setup. > > > > > > Signed-off-by: Stefan Roese <[EMAIL PROTECTED]> > > > --- > > > > Do we have the numbers ? Did they also measure latency ? > > I hoped this question would not come. ;) No, unfortunately I don't have any > numbers. Just the recommendation from AMCC to always use 256 buffers.
This cannot be true for all chips. Default numbers I selected weren't random. In particular, 256 for Tx doesn't make a lot of sense for 405. You just gonna waste memory. I'd be quite reluctant to follow such advices from AMCC without actual details. -- Eugene _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev
