RE: SHMBASE 0x44000000

SHMBASE should be set to he same value for all instances, it is platform specific as detailed in the Machine Release Notes. The SERVERNUM in each onconfig file differentiates the memory for each server. I'm not familiar with Linux kernel adjustment, but doubling the value might be a good starting point. Keith -> -----Original Message----- -> From: hariog@yahoo.com [mailto:hariog@yahoo.com] -> Sent: Tuesday, September 06, 2005 7:52 AM -> To: informix-list@iiug.org -> Subject: SHMBASE 0x44000000 -> -> -> Hi All, -> -> Redhat EL-AS3.0 -> Informix IDS 10.00.UC3 -> Physical Memory 8 GB -> OLTP -> -> One of our production server has got 3 instances (Live, Test and -> Test2). I know its not a good option to have test/dev instances on -> production server. You are right, eventually production server will -> have only Live instance. Hoping !!! -> -> My understanding about SHMBASE addressing is very poor. Sorry about -> that. -> -> I need to allocate SHMVIRTSIZE about 2.0 GB to Live instance -> and 750 MB -> each to Test and Test2. SHMTOTAL will be 0 for live and 1024000 for -> Test and Test2. -> -> Currently Live instance SHMVIRTSIZE is 900000 and SHMVIRTSIZE 300000 -> for other instances. SHMBASE for all three instances is 0x44000000. -> onstat - shows 1338012 Kbytes for Live and 732596 Kbytes for Test and -> Test2. Also /etc/syscntl has kernel.shmmax=1073741824 -> -> I need an advise on: -> -> 1. SHMBASE 0x44000000 is ok for all three instances ? If not, what is -> recommendation for Live, Test & Test2 SHMBASE ? -> -> 2. What should be optimal value for kernel.shmmax as current -> value will -> surely insufficient for Live to start ? -> -> Thanks in advance. -> ********************************************************************************** This message is sent in strict confidence for the addressee only. It may contain legally privileged information. The contents are not to be disclosed to anyone other than the addressee. Unauthorised recipients are requested to preserve this confidentiality and to advise the sender immediately of any error in transmission. This footnote also confirms that this email message has been swept for the presence of computer viruses, however we cannot guarantee that this message is free from such problems. ********************************************************************************** sending to informix-list