Date: Mon, 5 Dec 2011 09:19:14 -0800 From: Garrett Cooper <yanegomi@gmail.com> To: rank1seeker@gmail.com Cc: hackers@freebsd.org Subject: Re: CPUTYPE and friends, from 'make.conf' benchmark Message-ID: <CAGH67wTjGyhWAMYsCtzp8X7nN=yswOGntO=46AmT7yxymHSQ%2Bg@mail.gmail.com> In-Reply-To: <20111205.171654.020.1@DOMY-PC> References: <20111205.171654.020.1@DOMY-PC>
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2011/12/5 <rank1seeker@gmail.com>:
> I've took machine and installed binary FreeBSD(amd64 8.2-p4 GENERIC) on it.
> Then I've installed 'benchmarks/unixbench' port.
>
> So everything is a default generic binary install ('make.conf' empty - no CPU optimization flags)
>
> After running: '# time unixbench', final score was:
> 394.2
> Completed in 22.8 min
>
>
> Then I've recompiled everything, from src, world and kernel, with 'make.conf':
> --
> CPUTYPE?=core2
> CFLAGS+=-march=native
> NO_CPU_CFLAGS=yes
> COPTFLAGS+=-march=native
> NO_CPU_COPTFLAGS=yes
> --
>
> After reboot, I've run: '# time unixbench', final score was:
> 313.5
> Completed in 26.7 min
>
> I'm getting worse result, with optimized FreeBSD's binaries?!?
> How come?
Seems like -march=native is redundant.
-Garrett
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