I had a similar experience. 

regardless of scaling, etc, I got same results. almost like flags
are not active. 


pgbench -I template1
pgbench -c 10 -t 50 -v -d 1 

and played around from there....

This is on IBM pSeries, AIX5.3, PG8.0.2

-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of William Yu
Sent: Tuesday, June 21, 2005 12:05 PM
To: pgsql-performance@postgresql.org
Subject: [PERFORM] Trying to figure out pgbench

My Dual Core Opteron server came in last week. I tried to do some 
benchmarks with pgbench to get some numbers on the difference between 
1x1 -> 2x1 -> 2x2 but no matter what I did, I kept getting the same TPS 
on all systems. Any hints on what the pgbench parameters I should be using?

In terms of production use, it definitely can handle more load. 
Previously, Apache/Perl had to run on a separate server to avoid a ~50% 
penalty. Now, the numbers are +15% performance even with Apache/Perl 
running on the same box as PostgreSQL. How much more load of course is 
what I'd like to quantify.

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