Messages in this thread |  | | | Date | Mon, 8 May 2006 13:18:27 +0200 | | From | Erik Mouw <> | | Subject | Re: How can I boost block I/O performance |
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On Sun, May 07, 2006 at 01:55:12AM +0200, Jesper Juhl wrote: > On 5/6/06, Dave Pitts <dpitts@cozx.com> wrote: > >Hello all: > > > >I've been trying some hacks to boost disk I/O performance > [snip] > > > >This test is running several NFS clients to a RAID disk storage array. I > [snip] > > For improving performance of NFS servers I've often had good success > with increasing the 'rsize' and 'wsize' options. > The default values are 4096, I personally set them to 16384 which > usually helps NFS performance quite a bit. At least that's my > experience. > Simply add rsize=16384,wsize=16384 to the nfs mount options in > /etc/fstab and see if that improves performance for you (values like > 8192 and 32768 may also be worth testing, but personally I've found - > at least with my setups - that 16384 seems to be the magic value). > ('man 8 mount' and 'man 5 exports' also have more interresting options > you may want to experiment with, but just rsize & wsize on their own > should be a boost)
Another way is to increase the number of nfsd threads on the server. See rpc.nfsd(8). I usually increase it from the default 8 to 32 on busy machines.
Erik
-- +-- Erik Mouw -- www.harddisk-recovery.com -- +31 70 370 12 90 -- | Lab address: Delftechpark 26, 2628 XH, Delft, The Netherlands - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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