[clug] samba performance

Eyal Lebedinsky eyal at eyal.emu.id.au
Mon Apr 27 01:49:54 GMT 2009

So nobody has any suggestions?

As another reference point I nfs exported the directory and I get about 90MB/s

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.

Eyal Lebedinsky	(eyal at eyal.emu.id.au)

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