On Tue, Nov 10, 2009 at 8:00 AM, Laurent Laborde <kerdezixe@gmail.com> wrote:
>
> Desktop drive can easily do 60MB/s in *sequential* read/write.
> We use high performance array of 15.000rpm SAS disk on an octocore
> 32GB and IO is always a problem.
How man drives in the array? Controller? RAID level?
> I explain the problem :
>
> This server (doing wal archiving) is the master node of the
> over-blog's server farm.
> hundreds of GB of data, tens of millions of articles and comments,
> millions of user, ...
> ~250 read/write sql requests per seconds for the master
> ~500 read sql request per slave.
That's really not very fast.
