Upgrading to 64 bit from a 32 bit installation on FBSD 7
andrewberry at sentex.net
Thu Sep 18 12:52:00 UTC 2008
On 18-Sep-08, at 2:37 AM, Kris Kennaway wrote:
> Andrew Berry wrote:
>> Can I simply rebuild the world (or use freebsd-update), and
>> portupgrade everything to rebuild for amd64? Or, will things break
>> as libraries are upgraded which still have 32-bit dependancies on
>> the system?
> This is a pretty common question, did you try searching the archives
> or google for the answer?
Yes, I did, and was quite surprised when I didn't find a clear answer :)
>> Also, AFAIK upgrading to a 64 bit system allows access to
>> additional registers on the CPU, leading to a performance increase.
>> The system will only have 1.5 gigs of RAM, so that's not an issue,
>> but are there any benchmarks out there comparing performance on <
>> 4GB hardware with 32 bit and 64 bit Freebsd?
> Performance is not a single number. Sometimes 64-bit systems can be
> slower, sometimes faster. Run it on your own workload or look for a
> narrowly tailored benchmark and see what happens for you.
The main workload on this machine is SpamAssassin and gcc (for
updating ports). So I guess I'll have to look into Perl specifically
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