Asset ID:	1-71-1017736.1
Update Date:	2009-11-19
Keywords:

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Solution Type  Technical Instruction Sure

Solution  1017736.1 :   using psrset to bind oracle db server to set of CPU's during startup  


PreviouslyPublishedAs
228947

Description
On a system with a large number of cpus, such as the Sun Fire[TM] 6800s, 6900s, 15K, and 25K it may become benificial to create processor sets to bind processes to help improve performance.

Steps to Follow
On large systems it is best to build your processor sets locally on a single board. Use psrinfo and prtdiag to match up the cpu identifier to a system board.

A brief overview of an example:

1. make a processor set of 4 cpus (cpu4 cpu5 cpu6 cpu7)
# psrset -c 4 5 6 7
created processor set 1
2. Start oracle on these four processors
# psrset -e 1 start_oracle.sh
3. Disable interrupts on that processor set
# psrset -f 1
Some restrictions on processor sets:
a).  Boot CPU cannot be put into a processor set.
b).  You cannot perform dynamic reconfiguration on a system board
with processes bound to it.

Product
Sun Fire E6900 Server
Sun Fire 6800 Server
Sun Fire E25K Server
Sun Fire E20K Server
Sun Fire 15K Server
Sun Fire 12K Server
Solaris 8 Operating System
Solaris 9 Operating System

Previously Published As
79942
psrset, domain, cpu, performance

Change History
Audited 11/19/2009 tw107739 OS Content Team
No changes required.
Publishing.
Version: 3
Date: 2005-01-14
User Name: 71396
Action: Accept
Comment:
Version: 0

Date: 2005-01-18
User Name: 71396
Action: Approved
Comment: Performed final review of article.

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