Re: Finding the Bottleneck
On Friday 08 June 2001 10:49, Brian May wrote:
> Russell> If the NFS server has the same disk system then you will
> Russell> only make things worse. Anything you could do to give
> Russell> the NFS server better IO performance could more
> Russell> productively be done to the main server. Also many of
> Russell> the common Unix mail server programs are specifically
> Russell> designed to have the queue on a local file system with
> Russell> standard Unix semantics (Inode numbers etc). Qmail is
> Russell> one mail server that I have found to not work with it's
> Russell> queue on NFS, I haven't seriously tried any others. I've
> Russell> CC'd Brian May because he does a lot more NFS stuff with
> Russell> Debian than most people and he may be able to advise you.
> It depends on how much you want to share via NFS, what speed/type
> network you have, etc.
Jason has previously stated that he only wants a single machine and wants
things to be as cheap as possible.
> The idea of putting any queue on NFS is generally discouraged (due to
> file locking issues). Maildir is one exception to this rule.
Maildir != queue...
http://www.coker.com.au/bonnie++/ Bonnie++ hard drive benchmark
http://www.coker.com.au/postal/ Postal SMTP/POP benchmark
http://www.coker.com.au/projects.html Projects I am working on
http://www.coker.com.au/~russell/ My home page