Date: Sat, 20 Oct 2007 10:32:08 +0300 From: Kris Kennaway <kris@FreeBSD.org> To: Vlad GALU <dudu@dudu.ro> Cc: noackjr@alumni.rice.edu, net@freebsd.org Subject: Re: accept filters and zero copy sockets Message-ID: <4719AEF8.6070805@FreeBSD.org> In-Reply-To: <ad79ad6b0710190119o20f39a7el283beda536dc8d4d@mail.gmail.com> References: <15756.67.45.62.107.1192764733.squirrel@www.noacks.org> <ad79ad6b0710190119o20f39a7el283beda536dc8d4d@mail.gmail.com>
next in thread | previous in thread | raw e-mail | index | archive | help
Vlad GALU wrote: > On 10/19/07, Jonathan Noack <noackjr@alumni.rice.edu> wrote: >> I'm in the process of upgrading my web/database/nfs/jack-of-all-trades box >> from 6.2 to RELENG_7. I figured now would be a good time to clean up my >> kernel config files. I have the following in my old kernel config: >> >> # Statically Link in accept filters >> options ACCEPT_FILTER_DATA >> options ACCEPT_FILTER_HTTP >> >> # Zero copy sockets support. This enables "zero copy" for sending and >> # receiving data via a socket. The send side works for any type of NIC, >> # the receive side only works for NICs that support MTUs greater than the >> # page size of your architecture and that support header splitting. See >> # zero_copy(9) for more details. >> options ZERO_COPY_SOCKETS > > I recall experiencing some crashes with ZERO_COPY_SOCKETS on > RELENG_6 and it was related to the VM subsystem. Tor Egge may have a > better idea about the problem and whether it was fixed in RELENG_7 or > not. I think it is believed to be fixed in 7.0, so it is worth testing. Kris
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?4719AEF8.6070805>