Date: Sun, 9 Feb 2003 17:41:09 -0600 From: Tillman <tillman@seekingfire.com> To: freebsd-questions@FreeBSD.ORG Subject: Re: speeding up NFS Message-ID: <20030209174109.B32740@seekingfire.com> In-Reply-To: <20030209192839.GH5356@dan.emsphone.com>; from dnelson@allantgroup.com on Sun, Feb 09, 2003 at 01:28:39PM -0600 References: <200302091717.42138.ajacoutot@lphp.org> <20030209192839.GH5356@dan.emsphone.com>
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On Sun, Feb 09, 2003 at 01:28:39PM -0600, Dan Nelson wrote:
> In the last episode (Feb 09), Antoine Jacoutot said:
> > I wanted to know if someone could help me speed up NFS transfers with
> > FreeBSD-4.7-STABLE. With Linux clients+server, the transfers are
> > exactly twice faster than with freeBSD, so I am sure I must have
> > screwed the configuration somewhere.
>
> Writes or reads? I bet Linux doesn't sync on NFS writes like it's
> supposed to. If you set the sysctl vfs.nfsrv.async=1 on your FreeBSD
> nfs server, does it match Linuxes speed?
Which sysctl is this? The closest I can find is:
# sysctl -a | grep nfs | grep sync
vfs.nfs.async: 0
If that's the one, it may still not be necessary. I'm getting about
8.5-9 Megabytes/s on NFS reads from a Linux 2.4 client (on a 100Mbit
switched LAN) with it set to 0, as measured by Bonnie++. This is fairly
close to the 12MB/s fast ethernet theoretical maximum, so I'm happy with
performance.
-T
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