SvaRoX wrote:
Ok =) In fact server server admins say that 64 bits version runs slower than 32 bits, it seems it's verified once again.
This is probably because of hardware (or maybe bad compilers): you may have 64-bit CPU, but it's not worth it if your bus is 32-bit*, so it takes two cycles to send a pointer.
From my experience however, on my laptop Ubuntu 7.04 64-bit (back then) ran faster than the 32-bit one, not to mention how it ran much more reliably.
*I find it disturbing how many motherboards "with 64-bit support" have 32-bit address buses, and how they lack support for >4GB of RAM despite supporting 64-bit CPUs.
Edit: Do monitor your CPU speed if it supports dynamic scaling, I've noticed that some applications will consume "100%" CPU and work at the lowest CPU speed, while some applications will consume 40% of CPU but setting it to highest speed.
I.e.: I've noticed how StarCraft via WINE uses 100% CPU, but my CPU runs only at 800MHz out of 2000MHz. But when I manually set it to performance mode (fixed to 2GHz) it runs much more smoothly.