That's cool, I'll work on it. The NAS is fairly big, so I'm thinking if I
turn compression completely off it should improve backup times. At the
moment it's set to 3, but I don't really need the compression so I might
just turn it off...
Stephen
On Tue, Sep 2, 2008 at 10:56 PM, Les Mikesell <[EMAIL PROTECTED]> wrote:
> Tino Schwarze wrote:
> > On Tue, Sep 02, 2008 at 11:34:44AM +1000, Stephen Vaughan wrote:
> >> Hmm yeah I've a bit of a play with the nfs client side, the nfs server
> is
> >> purely web based, so it's limited to what I can play with.
> >>
> >> What about the network side of things, with data coming in and back out
> on
> >> the same interface?
> >
> > I's say: Tune NFS performance first without backuppc - you probably need
> > to tune NFS anyway. Then look how it works. Separating the interfaces
> > might be a good idea, but on the other hand, the access should be rather
> serial:
> >
> > - server receives something via rsync protocol
> > - then reads or writes some data via NFS
> > - then sends response to client
> >
> > Situation is a bit different with multiple concurrent backups. If it's
> > cheap to add another NIC, just do it - but it might not solve your NFS
> > performance issues.
>
> The main things likely to matter are the mount options for read/write
> block sizes and sync vs. async. With sync, every operation on the
> client waits for completion on the server so it is much slower than
> local disks where these will be buffered. With async, you have a chance
> of losing data that a program thought was committed to disk if you lose
> power - but it's a backup so it's like losing power a minute earlier...
>
> --
> Les Mikesell
> [EMAIL PROTECTED]
>
>
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--
Best Regards,
Stephen
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