RE: NUMCPUVPS on a box having multiple Informix Instances
Start with 1 CPUVP (or 2) on each instance, but with MULTIPROCESSOR set.
If/when one instance cannot keep up with the workload just add another
CPUVP. When it has settled down and you know what resource each needs,
affinitise each on their own CPU, if available on your platform.
MW
> -----Original Message-----
> From: owner-informix-list@iiug.org
> [mailto:owner-informix-list@iiug.org]On Behalf Of Chavan Koya
> Sent: Friday, 30 May 2003 9:13 a.m.
> To: Jay Aymond; informix-list@iiug.org
> Subject: Re: NUMCPUVPS on a box having multiple Informix Instances
>
>
> The instances will not be too busy. The processors speed is 250MHz.
> Thank you
> Chavan Koya
>
> ----- Original Message -----
> From: "Jay Aymond" <jaymond@communitycoffee.com>
> To: <informix-list@iiug.org>
> Sent: Friday, May 23, 2003 2:59 PM
> Subject: Re: NUMCPUVPS on a box having multiple Informix Instances
>
>
> > It depends ...
> >
> > How busy will each of the instances be?
> >
> > Will the instances be busy at the same times?
> >
> > What is the CPU speed of the processors? On some of the
> faster CPU's, you
> > can actually get increased performance by having more that
> one CPU VP per
> > hardware CPU.
> >
> >
> > "Chavan" <chavankumar@rediffmail.com> wrote in message
> > news:a1d0bf15.0305231135.35622597@posting.google.com...
> > > Hi All,
> > > The Informix recommandation for configuring
> NUMCPUVPS is equal> > > to, or less than the number of physical CPU's in the box. I had to
> > > configure two instances on a box, which is having 6 cpu's. So what
> > > should be the NUMCPUVPS, is it 3 for each instance or 6
> for each. For
> > > time being i configured it as 3 each.
> > > Any ideas, comments. Thanks in advance.
> > >
> > > Chavan Koya
> >
> >
> >