Re: Compiler performance tests on FreeBSD 10.0-CURRENT
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On Sun, Sep 16, 2012 at 12:34:45AM +0200, Dimitry Andric wrote:
> Hi all,
>=20
> 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.
>=20
> 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.
>=20
> 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.
>=20
> 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.
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