RE: NUMCPUVPS on a box having multiple Informix Instances
Posted in 2003
Topics: Performance & Tuning
Could you give examples of kinds of CPUs that could be configured for
more than one CPU VP per hardware CPU?
thanks,
Vivek
> -----Original Message-----
> From: jaymond [mailto:jaymond@communitycoffee.com]
> Sent: Friday, May 23, 2003 1:00 PM
> To: informix-list
> Cc: jaymond
> 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
>
>
>
It's more trial and error. I would not do it with a CPU speed of less than
700 Mhz or so.
Try different configurations and benchmark the results.
<vivek.chaudhary@st.com> wrote in message
news:bb0f02$h17$1@terabinaries.xmission.com...
>
> Could you give examples of kinds of CPUs that could be configured for
> more than one CPU VP per hardware CPU?
>
> thanks,
>
> Vivek
>
> > -----Original Message-----
> > From: jaymond [mailto:jaymond@communitycoffee.com]
> > Sent: Friday, May 23, 2003 1:00 PM
> > To: informix-list
> > Cc: jaymond
> > 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
> >
> >
> >
>