Re: Online 7.x on IBM uni-processor

David Kerslake <daveanne@ihug.co.nz> wrote: :We are running Informix systems on IBM RS6000s under AIX 4.2. We have to :upgrade to Informix DSA v7.x to take advantage of the latest release of :our application. : :We have heard that DSA, written for multi-processors, runs slower on a :uni-processor (which is what we have). Has anyone any information on :any potential performance degradation? : :David Kerslake From post's here and some use of the 7.x engines it seems like you should be able to get more or less the same performance as with 5.x under the following conditions: - A reasonably new version of the 7.x engine - The latest version of the OS - Enough memory (may require more than the 5.x engine) - Tuning the OS appropriately - Tuning the engine appropriately The last is what requires most work of course and is in this sence most important. You have to realy study the administration manuals and might want to go to a curse to learn more about it. With a single processor it should normally be enough with the OWS (Worgroup Server) version of the engine. This version is substantially cheaper than the full DSA version. Nils.Myklebust@idg.no NM Data AS, P.O.Box 9090 Gronland, N-0133 Oslo, Norway My opinions are those of my company The Informix FAQ is at http://www.iiug.org