Re: [gentoo-user] CFLAGS for Pentium Dual Core E2160 ?

[Qian Qiao]

On Nov 10, 2007 12:19 AM, Stefan G. Weichinger <lists@×××××.at> wrote:
>
> Greets, I recently bought a new CPU for my mythtv-box, it's a Pentium
> Dual E2160 ....
>
> Currently I use
>
> CFLAGS="-O2 -march=pentium4 -pipe -fomit-frame-pointer"
>
> as I moved the system over from a Pentium 4 (which just crashed).
>
> Things work fine so far, I checked google and
> http://gentoo-wiki.com/Safe_Cflags for a hint, also browsed the
> GCC-docs, but haven't yet found anything specific.
>
> It's not really important, I don't face any problems, but as I just
> think of it again I thought I just post a request, as that CPU isn't
> mentioned in that Wiki-page.
>
> Any recommended "-march" for that CPU? Maybe it helps with mythtv.
>
> Thanks in advance, Stefan.
>
> ===> (the following shows 1200 MHz because of cpufreqd ...)
>
> # cat /proc/cpuinfo
> processor       : 0
> vendor_id       : GenuineIntel
> cpu family      : 6
> model           : 15
> model name      : Intel(R) Pentium(R) Dual  CPU  E2160  @ 1.80GHz
> stepping        : 13
> cpu MHz         : 1200.000
> cache size      : 1024 KB
> physical id     : 0
> siblings        : 2
> core id         : 0
> cpu cores       : 2
> fdiv_bug        : no
> hlt_bug         : no
> f00f_bug        : no
> coma_bug        : no
> fpu             : yes
> fpu_exception   : yes
> cpuid level     : 10
> wp              : yes
> flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
> mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm
> constant_tsc pni monitor ds_cpl est tm2 ssse3 cx16 xtpr lahf_lm
> bogomips        : 3601.80
> clflush size    : 64

-march=nocona is what you are looking for.


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