Solaris Dual Core CPU

Posted in 2006

Topics: Installation, Setup & Upgrades, Server Administration

Colin Dawson — Wed, 08 Feb 2006 00:09:03 +0000 — source: Usenet: comp.databases.informix

We have just upgraded our servers from 16 CPU Sun 6800's to 24 CPU Sun 6900's; This is an O/S and hardware enhancement in which all of the new CPU's are dual core. Theoretically there are 32 CPU's in each server, even though there is only space for 24 physical CPU's. My question is, should I use the number of physical CPU's -1 in the onconfig file or the number of virtual CPU's -1 ? I'd like to use 31 - it sounds a lot better than 23 :) Regards Colin There are 10 types of people in the world, those that understand binary and those that don't

↪ replying to Colin Dawson

Curtis Crowson — 8 Feb 2006 08:24:36 -0800 — source: Usenet: comp.databases.informix

Colin Dawson Said: >My question is, should I use the number of physical CPU's -1 in the onconfig file or the number of virtual CPU's -1 ? The question to ask is which works better? I think you could at least use 31. We run 16 more CPUVPs than we have on our old Alpha box. We have found that it runs our system better. We have a 32 way box and run 48 CPUVPs. Does anyone else run more CPUVPs than CPU's?

↪ replying to Curtis Crowson

DL Redden — Wed, 8 Feb 2006 11:47:35 -0800 (PST) — source: Usenet: comp.databases.informix

We do but not on that scale. Our largest server's are only a 4-way and the rest are 2-ways. We run 1.5 to 2 times the number of physical CPU's and have no issues. In fact our development server is a 4-way and we have a total of 14 CPU VP's, they are split among several instances but still it's a lot for one machine. Processors are fast enough these days that I don't realy think that the #CPU-1 formula still applies, especially in a dual core environment, which BTW we do not have. If I had dual core machines it's likely that I'd run even more CPU VP's and not see any issues. DL Redden Visit my wifes web site www.lishalynn.com for all of your makeup and skin care needs. ----- Original Message ---- From: Curtis Crowson <curtis.crowson@employease.com> To: informix-list@iiug.org Sent: Wednesday, February 08, 2006 10:24:36 AM Subject: Re: Solaris Dual Core CPU Colin Dawson Said: >My question is, should I use the number of physical CPU's -1 in the onconfig file or the number of virtual CPU's -1 ? The question to ask is which works better? I think you could at least use 31. We run 16 more CPUVPs than we have on our old Alpha box. We have found that it runs our system better. We have a 32 way box and run 48 CPUVPs. Does anyone else run more CPUVPs than CPU's? _______________________________________________ Informix-list mailing list Informix-list@iiug.org http://www.iiug.org/mailman/listinfo/informix-list

Glossary

onconfig