[clug] samba performance

[Francis James Whittle]

It might be a better idea to direct this to the samba mailing list....

https://lists.samba.org/mailman/listinfo/samba

On Mon, 2009-04-27 at 11:49 +1000, Eyal Lebedinsky wrote:
> So nobody has any suggestions?
> 
> As another reference point I nfs exported the directory and I get about 90MB/s
> read.
> 
> Eyal Lebedinsky wrote:
> > I did some reading and tried some suggestions but I think that smb
> > is not as fast as it should be.
> > 
> > I have two linux systems that use smb shares (there is Windows around
> > that uses it too). I can only see 24MB/s when transferring a file
> > either way. The 1Gb wire shows 117MB/s raw performance.
> > 
> > Normally, dd'ing a 256MB file to /dev/null is satisfied from memory
> > after the first attempt.
> > 
> > /data is a share on e7 that exports a local directory /data.
> > 
> > I know that
> >     rsh e7 dd if=/data/256MB bs=16M >/dev/null
> > goes as fast as the wire.
> > 
> > The same test over smb:
> >     sync ; echo 3 >/proc/sys/vm/drop_caches
> >     dd if=/data/256MB bs=16M >/dev/null
> > gives only about 24MB/s. Repeatedly. I assume that the file is
> > cached on e7 (the server).
> > 
> > Any pointers to tuning notes are appreciated.
> > 
> > TIA
> 
> -- 
> Eyal Lebedinsky	(eyal at eyal.emu.id.au)