Date: Mon, 28 Nov 2005 13:10:51 +0200 From: Ruslan Ermilov <ru@FreeBSD.org> To: Kris Kennaway <kris@obsecurity.org> Cc: amd64@FreeBSD.org Subject: Re: My make buildworld FreeBSD 6.0R amd64 test Message-ID: <20051128111051.GG58778@ip.net.ua> In-Reply-To: <20051128105215.GA16457@xor.obsecurity.org> References: <438AA21E.2030702@gneto.com> <20051128104253.GB59977@ip.net.ua> <20051128105215.GA16457@xor.obsecurity.org>
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[-- Attachment #1 --] On Mon, Nov 28, 2005 at 05:52:16AM -0500, Kris Kennaway wrote: > On Mon, Nov 28, 2005 at 12:42:53PM +0200, Ruslan Ermilov wrote: > > On Mon, Nov 28, 2005 at 07:22:22AM +0100, Martin Nilsson wrote: > > > Hi list, > > > > > > I made some simple comparing of CPU performance between intel and AMD > > > CPU:s on FreeBSD 6.0R The intent was to see how things like dualcore and > > > Hyperthreading affects a rather CPU bound real world job. > > > > > > The results can be seen here: > > > http://www.mullet.se/support/amd64-buildworld.html > > > > > > Please don't publish this anywhere else, I want to have your comments > > > and a chance to fix any errors before I get slashdotted and flamed to > > > hell :-) > > > > > For the starters, you're compiling two different sets of files, > > one for i386 and another for amd64. You'd better compare the > > same set. This can be done (approximately) by doing a cross-build > > for say i386: "make -jN buildworld TARGET_ARCH=i386". Also, given > > the amount of memory that you have in these machines, it shouldn't > > be a problem to put /usr/src and /usr/obj onto a memory disk. > > That will only cross-compile on amd64; isn't it better to > cross-compile a third party (e.g. sparc64) on both i386 and amd64? > As jkoshy@ has pointed out to me, the Intel CPUs present in this table support EMT64, so the author is probably running FreeBSD/amd64 on them and my point about cross-build doesn't make sense. Cheers, -- Ruslan Ermilov ru@FreeBSD.org FreeBSD committer [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2 (FreeBSD) iD8DBQFDiuW7qRfpzJluFF4RAmMeAJ95YWEgCuVEH4qcvKrAGa4HDtHxyQCfbYYH YPC1nUyCURTxfcwt1CQfMuw= =klr3 -----END PGP SIGNATURE-----help
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