Date: Thu, 25 Apr 2013 11:46:09 -0700 From: Marc Fournier <mfournier@sd63.bc.ca> To: Marc G. Fournier <scrappy@hub.org> Cc: freebsd-fs@freebsd.org Subject: Re: NFS Performance issue against NetApp Message-ID: <27856D25-CE4F-45C3-A18D-ACB0793D70B6@sd63.bc.ca> In-Reply-To: <2F5E9262-E465-4837-9B35-6220970C185E@hub.org> References: <972106612.1125159.1366850215231.JavaMail.root@erie.cs.uoguelph.ca> <2F5E9262-E465-4837-9B35-6220970C185E@hub.org>
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On 2013-04-25, at 11:43 , Marc G. Fournier <scrappy@hub.org> wrote: >=20 > On 2013-04-24, at 17:36 , Rick Macklem <rmacklem@uoguelph.ca> wrote: >=20 >> If you explicitly set rsize=3DN,wsize=3DN on a mount, those sizes = will be >> used unless they are greater than min(MAXBSIZE, server-max). MAXBSIZE = is >> the limit for the client side buffer cache and server-max is whatever >> the server says is its max, so the client never uses a value greater = than >> that. >=20 > Just got my new Intel card in, so starting to play with it =85 one = thing I didn't notice yesterday when I ran nfsstat -m: >=20 > = nfsv3,tcp,resvport,soft,intr,cto,lockd,sec=3Dsys,acdirmin=3D3,acdirmax=3D6= 0,acregmin=3D5,acregmax=3D60,nametimeo=3D60,negnametimeo=3D60,rsize=3D6553= 6,wsize=3D65536,readdirsize=3D32768,readahead=3D1,wcommitsize=3D5175966,ti= meout=3D120,retrans=3D2 >=20 > Earlier in this thread, it was recommended to change to 32k =85 and = Jeremy Chadwick thought it defaulted to 8k =85 >=20 > My fstab entry right now is simply: >=20 > 192.168.1.1:/vol/vm /vm nfs rw,intr,soft 0 = 0 >=20 > so I'm not changing rsize/wsize anywhere =85 did those defaults get = raised recently and nobody noticed? or does it make sense to reduce = from 64k -> 32k to get better performance? >=20 > Again, this is using a FreeBSD client to mount from a NetApp file = server =85 Just checked on the Linux box (old, being phased out) and when I do an = hfs mount, it too is set to 64k rsize/wsize: Flags: = rw,relatime,vers=3D3,rsize=3D65536,wsize=3D65536,namlen=3D255,hard,proto=3D= tcp,timeo=3D600,retrans=3D2,sec=3Dsys,mountaddr=3D10.5.253.130,mountvers=3D= 3,mountproto=3Dtcp
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