Date: Thu, 18 Sep 2008 08:51:50 -0400 From: Andrew Berry <andrewberry@sentex.net> To: Kris Kennaway <kris@freebsd.org> Cc: questions@freebsd.org Subject: Re: Upgrading to 64 bit from a 32 bit installation on FBSD 7 Message-ID: <6064616F-F11C-4EE9-8902-2646E5F6DCB5@sentex.net> In-Reply-To: <48D1F715.2070107@FreeBSD.org> References: <7D3E2F4C-5CF8-4DCA-8B8F-5AF2015250B1@sentex.net> <48D1F715.2070107@FreeBSD.org>
next in thread | previous in thread | raw e-mail | index | archive | help
--Apple-Mail-844-769461175 Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes Content-Transfer-Encoding: 7bit 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 then. Thanks, --Andrew --Apple-Mail-844-769461175--
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?6064616F-F11C-4EE9-8902-2646E5F6DCB5>