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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TIP 9: In versions below 8.0, the planner will ignore your desire to
choose an index scan if your joining column's datatypes do not
match
