[CentOS] centos 64 bit

m.roth at 5-cent.us m.roth at 5-cent.us
Wed Jul 13 13:27:31 UTC 2011

Lamar Owen wrote:
> On Wednesday, July 13, 2011 09:00:13 AM m.roth at 5-cent.us wrote:
>> Coming in late, here, but 64 bit should run as fast or faster, since the
>> registers are larger, and 64-bit hardware is optimized for by 64-bit
>> compilers. In addition, you get twice as much data per fetch. The upshot
>> is that there is no good reason for it to run slower.
> This is not true in the general 64-bit architecture case.  It may be
> mostly true in the specific x86_64 case, but there is a reason a 32-bit
> userland is used on 64-bit SPARC linux, and that reason is code bloat
> (which makes it take longer to load from disk, it takes up more cache,
True, but I was thinking of identical code, compiled differently (64 vs
32). Code bloat... ah, yes, the joys of OOPs....

        mark "that's another rant"

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