Re: Performance on 8CPU's and 32GB of RAM

On 9/7/07, Florian Weimer  wrote:
> * Scott Marlowe:
>
> > And there's the issue that with windows / NTFS that when one process
> > opens a file for read, it locks it for all other users.  This means
> > that things like virus scanners can cause odd, unpredictable failures
> > of your database.
>
> I think most of them open the file in shared/backup mode.  The only
> lock that is created by that guards deletion and renaming.  It can
> still lead to obscure failures, but it's not a wholly-eclusive lock.

Well, there've been a lot of issues with anti-virus and postgresql not
getting along.  I wonder if pgsql takes out a stronger lock, and when
it can't get it then the failure happens.  Not familiar enough with
windows to do more than speculate.