Re: [PATCH v2] tcp: splice as many packets as possible at once
From: Herbert Xu <herbert@gondor.apana.org.au>
Date: 2009-02-04 09:00:09
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On Wed, Feb 04, 2009 at 09:54:32AM +0100, Willy Tarreau wrote:
My server is running 2.4 :-), but I observed the same issues with older 2.6 as well. I can certainly imagine that things have changed a lot since, but the initial point remains : jumbo frames are expensive to deal with, and with recent NICs and drivers, we might get close performance for little additional cost. After all, initial justification for jumbo frames was the devastating interrupt rate and all NICs coalesce interrupts now.
This is total crap! Jumbo frames are way better than any of the hacks (such as GSO) that people have come up with to get around it. The only reason we are not using it as much is because of this nasty thing called the Internet. Cheers, -- Visit Openswan at http://www.openswan.org/ Email: Herbert Xu ~{PmV>HI~} [off-list ref] Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt