Date: Sun, 16 Sep 2012 08:19:09 +0300 From: Konstantin Belousov <kostikbel@gmail.com> To: Dimitry Andric <dimitry@andric.com> Cc: freebsd-current@freebsd.org, freebsd-toolchain@freebsd.org Subject: Re: Compiler performance tests on FreeBSD 10.0-CURRENT Message-ID: <20120916051909.GI37286@deviant.kiev.zoral.com.ua> In-Reply-To: <50550285.4040203@andric.com> References: <50550285.4040203@andric.com>
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[-- Attachment #1 --] On Sun, Sep 16, 2012 at 12:34:45AM +0200, Dimitry Andric wrote: > Hi all, > > By request, I performed a series of kernel performance tests on FreeBSD > 10.0-CURRENT, particularly comparing the runtime performance of GENERIC > kernels compiled by gcc 4.2.1 and by clang 3.2. > > The attached text file[1] contains more information about the tests, > some semi-cooked performance data, and my conclusions. Any errors and > omissions are also my fault, so if you notice them, please let me know. > > The executive summary: GENERIC kernels compiled with clang 3.2 are > slightly faster than those compiled by gcc 4.2.1, though the difference > will not very noticeable in practice. > > Last but not least, thanks to Gavin Atkinson for providing the required > hardware. Thank you very much for doing this. I tried to map the CPUID into more human-friendly family moniker, and it seems that these are Pentium-4 class CPUs. Am I right ? If yes, could you, please, rerun the tests on anything more recent than Core2, i.e. any Core i7-whatever class of Xeons ? Thank again. [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (FreeBSD) iEYEARECAAYFAlBVYU0ACgkQC3+MBN1Mb4jwPACgprGQgUxqIAh8z5ymqizGgesx VhYAmwdDn4Pzlz28GNHUq4s4o6kl5s/q =aK0L -----END PGP SIGNATURE-----
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