Re: Several instances of IDS 7.3X

Ty O'Kelly wrote: > > What role (if any) do parameters concerning multi-processor systems play in > multiple residency? If both onconfig files contain the following values (for a > dual processor system) will there be any kind of contention between the two > instances? > > MULTIPROCESSOR 1 # 0 for single-processor, 1 for multi-processor > NUMCPUVPS 1 # Number of user (cpu) vps > SINGLE_CPU_VP 0 # If non-zero, limit number of cpu vps to one > > NOAGE 0 # Process aging > AFF_SPROC 1 # Affinity start processor > AFF_NPROCS 1 # Affinity number of processors If your users can learn to alternate requests between the two instances, you should be okay. :-) Otherwise, I'd say there will be a LOT of contention. It does depend on how busy each instance is though. If you can use affinity with CPU 0, then you could use both CPUs. However, using CPU 0 is rarely a good idea. I would switch off affinity altogether on both instances. Cheers, -- Mark. +----------------------------------------------------------+-----------+ | Mark D. Stock mailto:mdstock@mydas.freeserve.co.uk |//////// /| | http://www.informix.com http://www.informixhandbook.com |///// / //| | http://www.iiug.org +-----------------------------------+//// / ///| | |This email will self-destruct in |/// / ////| | |10 sec. If you received this email |// / /////| | |in error, sorry about the mess. |/ ////////| +----------------------+-----------------------------------+-----------+