Hi Willian, Which are the GCC flags that you it used to compile PostgreSQL? Best regards, Gustavo Franklin Nóbrega Infraestrutura e Banco de Dados Planae Tecnologia da Informação (+55) 14 3224-3066 Ramal 209 www.planae.com.br > 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. > > ---------------------------(end of broadcast)--------------------------- > TIP 2: you can get off all lists at once with the unregister command > (send "unregister YourEmailAddressHere" to majordomo@xxxxxxxxxxxxxx) >