From mboxrd@z Thu Jan 1 00:00:00 1970 From: Benjamin Herrenschmidt To: Bill Fink Cc: "David S. Miller" , , Anton Blanchard Subject: Re: GigE Performance Comparison of GMAC and SUNGEM Drivers Date: Tue, 20 Nov 2001 13:02:32 +0100 Message-Id: <20011120120232.6517@smtp.adsl.oleane.com> In-Reply-To: References: MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Sender: owner-linuxppc-dev@lists.linuxppc.org List-Id: > >I'd consider it much more than nice. Since the whole point of GigE >is better performance, taking such a huge peformance/CPU hit would >be extremely bad. OTOH, I probably won't be using the built-in GigE >hardware anyway because of its apparent performance ceiling of about >660 Mbps and its lack of jumbo frame support. Well, I think we may get overall better perfs once we have this fixed, and (David, can you confirm ?), I think jumbo frames can be supported. So there is a small issue with the Tx ring that I'll fix asap but it doesn't explain your problem, you are getting way too much interrupt, possibly those rxmac/txmac interrupts I've noticed here. I'll investigate a bit and send you a patched driver. Thanks for taking the time for testing, Ben ** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/