I run my Oracle guests GT 90% mem and use Velocity to watch the WSS size and +- SGA for good performance on s390x.
This approach is opposite of what (as you may of heard) you may do to improve performance on I686-RHEL. NONE of the individual guest DBs are over 4.0G MEM. Here is a recent tuning change which droped IO in the guest over 100% for a 4G guest. SQL> alter system set SGA_TARGET=1200M scope both; SQL> alter system set PGA_TARGET=600M scope both; SQL> alter system set SGA_MAX_SIZE=1200M scope both; SQL> alter system set DB_CACHE_SIZE=500M scope both; ://Gerard -----Original Message----- From: Linux on 390 Port [mailto:linux-...@vm.marist.edu] On Behalf Of Carson, Brad Sent: Thursday, February 04, 2010 8:01 AM To: LINUX-390@vm.marist.edu Subject: A Question on Sizing z/VM Linux Guests We have a project that is being setup to run on RHEL under z/VM. The sizing parameters for the guests (Oracle DB, and WebLogic) are being sent to us based on intel platform sizing. How do some of you handle the sizing conversion from Intel to IFL's? Are there some rules of thumb, we should know about? Our environment: IBM z10-BC (QA and Dev) and z10-EC (Prod) running z/VM 5.4 and RHEL 5.3. Thanks for any insight. /Brad (please ignore the company inserted HIPAA disclaimer) ----------------------------------------- This e-mail and any attachments may contain CONFIDENTIAL information, including PROTECTED HEALTH INFORMATION. If you are not the intended recipient, any use or disclosure of this information is STRICTLY PROHIBITED; you are requested to delete this e-mail and any attachments, notify the sender immediately, and notify the LabCorp Privacy Officer at privacyoffi...@labcorp.com or call (877) 23-HIPAA. ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
