O> Agreed. First, the 64-bit OS itself should be a bit faster than a 32-bit > OS on the same platform. But, in my experience with 64-bit going back 16 > years there are some applications that will run faster if built for > 32-bit and some will run faster if built for 64-bit. There are some > tradeoffs. The sizes of libraries and applications will be larger in > 64-bit. You will need both 64-bit and 32-bit libraries if you want to > run 32-bit apps.
The x86 case is a bit different to the others (indeed for example sparc64 user space is mostly faster 32bit) On x86 the CPU has a real shortage of registers. The 64bit mode changes this somewhat which means its not a simple 64bit extend but also other performance improving features that become available. Alan -- users mailing list users@lists.fedoraproject.org To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines
