From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ray Lehtiniemi Subject: Re: RE: how to tune a pair of e1000 cards on intel e7501-based system? Date: Wed, 8 Dec 2004 16:43:10 -0700 Message-ID: <20041208234310.GE8649@mail.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Cc: Scott Feldman , netdev@oss.sgi.com Return-path: To: "Brandeburg, Jesse" Content-Disposition: inline In-Reply-To: Sender: netdev-bounce@oss.sgi.com Errors-to: netdev-bounce@oss.sgi.com List-Id: netdev.vger.kernel.org hi jesse On Tue, Dec 07, 2004 at 05:10:26PM -0800, Brandeburg, Jesse wrote: > > I'm not much of an expert, but one easy thing to try is to up your > receive stack resources, as they were particularly low on 2.4 series > kernels, leading to udp getting overrun pretty easily with gig nics. I > think if you make the value go too high it just ignores it, so if you > see no change, try 256kB instead. > > cat /proc/sys/net/core/rmem_default > cat /proc/sys/net/core/rmem_max > > echo -n 512000 > /proc/sys/net/core/rmem_default > echo -n 512000 > /proc/sys/net/core/rmem_max sounds reasonable, i'll try this early next week when i have access to that test box again. thanks! -- ---------------------------------------------------------------------- Ray L