Date: Wed, 24 Apr 2013 16:18:08 -0700 From: Jeremy Chadwick <jdc@koitsu.org> To: "Marc G. Fournier" <scrappy@hub.org> Cc: freebsd-fs@freebsd.org Subject: Re: NFS Performance issue against NetApp Message-ID: <20130424231808.GA20882@icarus.home.lan> In-Reply-To: <4E817B3C-6524-4F7F-943C-8C707BCED610@hub.org> References: <753914397.1123782.1366844549491.JavaMail.root@erie.cs.uoguelph.ca> <4E817B3C-6524-4F7F-943C-8C707BCED610@hub.org>
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On Wed, Apr 24, 2013 at 04:08:24PM -0700, Marc G. Fournier wrote: > > On 2013-04-24, at 16:02 , Rick Macklem <rmacklem@uoguelph.ca> wrote: > > >> > > Along with rsize,wsize you might want to try increasing readahead. The > > default is only 1. > > Stupid question on this, possibly, but are the current defaults "sane" anymore, or residual from 'the old days'? Like, I've read in many places where you should raise rsize/wsize … in what circumstances would leaving as the defaults make sense? >From what I can discern, the defaults on stable/9 (for an NFS client) are 8192 -- see sys/nfsclient/nfs.h, NFS_WSIZE and NFS_RSIZE. -- | Jeremy Chadwick jdc@koitsu.org | | UNIX Systems Administrator http://jdc.koitsu.org/ | | Mountain View, CA, US | | Making life hard for others since 1977. PGP 4BD6C0CB |
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