Date: Mon, 18 Jun 2007 17:18:49 -0400 From: Kris Kennaway <kris@obsecurity.org> To: Martin Turgeon <turgeon.martin@gmail.com> Cc: freebsd-hackers@freebsd.org, Jeremy Chadwick <koitsu@freebsd.org>, freebsd-hardware@freebsd.org Subject: Re: i386 with PAE or AMD64 on PowerEdge with 4G RAM Message-ID: <20070618211849.GA77265@rot13.obsecurity.org> In-Reply-To: <322073cc0706181415o17ecd532i971d8bdf5ea1dafd@mail.gmail.com> References: <4676BAF0.4030703@gmail.com> <20070618180813.GA13003@eos.sc1.parodius.com> <322073cc0706181415o17ecd532i971d8bdf5ea1dafd@mail.gmail.com>
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On Mon, Jun 18, 2007 at 05:15:30PM -0400, Martin Turgeon wrote: > 2007/6/18, Jeremy Chadwick <koitsu@freebsd.org>: > > > >On Mon, Jun 18, 2007 at 01:03:44PM -0400, Martin Turgeon wrote: > >> I just receive 2 PowerEdge servers (a 1950 and a 860) both with 4G of > >RAM. I > >> installed FreeBSD 6.2 Release i386 on both of them. Unfortunately, only > >3,5G > >> is recognized on the 860 and 3,3G on the 1950. > >> dmesg on 860: > >> real memory = 3757834240 (3583 MB) > >> avail memory = 3678318592 (3507 MB) > >> > >> I am facing a difficult decision. Should I use i386 with PAE enabled in > >the > >> kernel (I read a lot of warnings using it) or should I go with AMD64? > >Which > >> branch should I follow? > > > >Based on what I've read from some of the porters and miscellaneous > >others, generally-speaking there's too many issues with amd64 (in the > >sense of 32-bit vs. 64-bit compatibility -- not the fault of the kernel > >or otherwise) to consider it worth switching to. > > > >I personally don't run 64-bit OSes because most developers still use > >32-bit machines and don't have a way to develop/test in 64-bit > >environments. > > > >That said, I'd recommend you stick with i386 + PAE, simply for > >guaranteed application compatibility. > > > My setup is fairly standard (as I described), should I expect problem with > 64 bit version of these programs? No. I'd go with amd64 personally. Kris
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