Re: Some quick Opteron 32-bit/64-bit results

[William Yu <wyu@xxxxxxxxxxx>]

Biggest speedup I've found yet is the backup process (PG_DUMP --> GZIP). 
100% faster in 64-bit mode. This drastic speed might be more the result 
of 64-bit GZIP though as I've seen benchmarks in the past showing 
encryption/compression running 2 or 3 times faster in 64-bit mode versus 
32-bit.



William Yu wrote:

> I just finished upgrading the OS on our Opteron 148 from Redhat9 to 
> Fedora FC2 X86_64 with full recompiles of Postgres/Apache/Perl/Samba/etc.
>
> The verdict: a definite performance improvement. I tested just a few CPU 
> intensive queries and many of them are a good 30%-50% faster. 
> Transactional/batch jobs involving client machines (i.e. include fixed 
> client/networking/odbc overhead) seem to be about 10%-20% faster 
> although I will need run more data through the system to get a better 
> feel of the numbers.