On Mon, 22 Oct 2007 12:03:05 -0400 Matthew Saltzman <mjs@xxxxxxxxxxx> wrote: > 32-bit runtime in general? Why? (Not a critical "why", a genuinely > curious "why"...) On those arches, running 64bit code comes at a penalty. In fact, even on x86_64 there is a penalty. Larger memory overhead. However on x86_64 the extra CPU registers gained by running in x86_64 mode outweigh the memory overhead. Not the case on ppc/sparc where there are no 'extra registers' to gain. Very little software in very few situations need 64bit. -- Jesse Keating Fedora -- All my bits are free, are yours?
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