Re: Upgrading to 64 bit from a 32 bit installation on FBSD 7
Andrew Berry wrote: Hi, I've got a server which will be upgraded to my castoff parts which support amd64. This machine has been running Freebsd since the 5.0 RC's, starting on a P2 233Mhz, upgraded incrementally for a few years - a real testament to the stability of a FreeBSD install! What I've done in the past while upgrading is simply move the drive, and rebuild everything with an updated make.conf optimized for the new processor. 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? 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. Kris ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Upgrading to 64 bit from a 32 bit installation on FBSD 7
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
Re: Upgrading to 64 bit from a 32 bit installation on FBSD 7
Andrew Berry wrote: 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 :) Perhaps because it's not a simple operation ;) Kris ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
