[Koha-devel] performance issues with mysql and koha on 2 physical servers

Hello all, I would like to better understand why when we put koha source on a different mysql physical server we have a performance problems. If I put mysql on koha source server, an opac-search take 2 times less than if I separate mysql server and koha sources. I don't really know why: - perl libs? (CGI + DBH?) - mysql setting? - network setting? Do you know thinks about this? did you work or remember works from others ? (I am really not comfortable with hardware architecture or server settings and first I would like to collect your feedbacks.) Claire;