Date: Fri, 09 Nov 2012 01:48:09 +0400 From: "Alexander V. Chernikov" <melifaro@FreeBSD.org> To: Adrian Chadd <adrian@freebsd.org> Cc: freebsd-net@freebsd.org, freebsd-hackers@freebsd.org Subject: Re: [patch] reducing arp locking Message-ID: <509C2899.8010701@FreeBSD.org> In-Reply-To: <CAJ-Vmo=tw1peswao9hwk=1fdmvr6SFDfE5T0cmw0b1w_YWRJtQ@mail.gmail.com> References: <509AEDAC.10002@FreeBSD.org> <CAJ-Vmo=tw1peswao9hwk=1fdmvr6SFDfE5T0cmw0b1w_YWRJtQ@mail.gmail.com>
next in thread | previous in thread | raw e-mail | index | archive | help
On 08.11.2012 03:46, Adrian Chadd wrote: > On 7 November 2012 15:24, Alexander V. Chernikov<melifaro@freebsd.org> wrote: >> Hello list! >> >> Currently we need to acquire 2 read locks to perform simple 6-byte copying >> from arp record to packet ethernet header. >> >> It seems that acquiring lle lock for fast path (main traffic flow) is not >> necessary even with current code. >> >> My tests shows ~10% improvement with this patch applied. >> >> If nobody objects I plan to commit this change at the end of next week. > > That's a great catch! How'd you discover it? We have lots of FreeBSD routers doing 10G firewalling, so we're very much concerned with forwarding/firewalling performance, constantly looking for something to optimize :) > > > > Adrian >
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?509C2899.8010701>