Re: NUMCPUVPS on a box having multiple Informix Instances

Why should one have more cpu vps that cpus and why does this have something to do with the cpu speed? Cpu vps should never block or sleep until they are really idle. If this holds, one vp can load one cpu 100%. If it doesn't hold it's a performance bug and you should talk to support about it. If you have such a situation I would be interested in the details and would be willing to help you figure out what causes it. Michael Jay Aymond wrote: > 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 >>> >>> >>> > > > -- === Michael Mueller ================== Tel. + 49 8171 63600 Fax. + 49 8171 63615 Web: http://www.mm.kay-mueller.de http://www.planets.kay-mueller.de ======================================