Re: processor affinity

jblatz@worldnet.att.net wrote: > > Our Unix machine has 4 processors. According to the release notes for Online > ver 7.24, my operating system supports Affinity. However, when I set the > affinity parameter in the onconfig file to anything but 0 (I forget the exact > name of the parameter), I get a message in the online log saying affinity is > not supported. > > If I set the affinity parameter to 0, then the message in the online log says > affinity has been set to cpu #1. > > I don't get it. It sounds like you are setting the processor number to start binding to. Processors are normally number from 0, so processor 0 will be CPU #1. There are two (well three actually) parameters to set: AFF_NPROCS - Number of CPUs to bind to AFF_SPROC - CPU number to start binding to Both of these parameters will be ignored if you don't set this one to 1: MULTIPROCESSOR - 0=single processor, 1=multiprocessor Hope that helps, -- Mark. +----------------------------------------------------------+-----------+ |Mark D. Stock - Informix SA http://www.informix.com |//////// /| |mailto:mdstock@informix.com http://www.informix.com/idn |///// / //| |http://www.iiug.org +-----------------------------------+//// / ///| | Tel: +27 11 807 0313 |If it's slow, the users complain. |/// / ////| | Fax: +27 11 807 2594 |If it's fast, the users keep quiet.|// / /////| |Cell: +27 83 250 2325 |Therefore, "No news: travels fast"!|/ ////////| +----------------------+-----------------------------------+-----------+