[gentoo-user] CFLAGS setting for Intel(R) Pentium(R) M processor 1.73GHZ stepping 08

[gentoo-user] CFLAGS setting for Intel(R) Pentium(R) M processor 1.73GHZ stepping 08

[Richard Watson]

I've just got a new laptop I'm installing Gentoo on and was wondering if
anyone could advise on the CFLAG setting I'm using. The CPU is a
Intel(R) Pentium(R) M processor 1.73GHZ stepping 08. Currently I've set
CFLAGS="-02 -mcpu=pentium -pipe"
--
Thanks, Richard

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Re: [gentoo-user] CFLAGS setting for Intel(R) Pentium(R) M processor 1.73GHZ stepping 08

[Peter Gordon]

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On Sun, 2005-10-23 at 01:31 +1000, Richard Watson wrote:
> I've just got a new laptop I'm installing Gentoo on and was wondering if
> anyone could advise on the CFLAG setting I'm using. The CPU is a
> Intel(R) Pentium(R) M processor 1.73GHZ stepping 08. Currently I've set
> CFLAGS="-02 -mcpu=pentium -pipe"

If you're using the the GCC from stable ("x86") portage (GCC 3.3), then
you should probably use something like:

CFLAGS="-O2 -march=pentium3 -msse2 -pipe"

GCC 3.4 (marked unstable, "~x86") makes it a little simple by adding
a Pentium-M specific architecture type:

CFLAGS="-O2 -march=pentium-m -pipe"

Although, on a laptop you might want to use "-Os" (size optimization)
in place of "-O2", as the disk is a lot slower than desktop machines
and you will probably have longer startup times for programs. I'm not
too sure on that last part, a I don't have a laptop, though. Anyone
else want to take a stab at that? :)

Hope that helps.
--Peter

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Re: [gentoo-user] CFLAGS setting for Intel(R) Pentium(R) M processor 1.73GHZ stepping 08

[Willie Wong]

On Sun, Oct 23, 2005 at 01:31:32AM +1000, Richard Watson wrote:
> I've just got a new laptop I'm installing Gentoo on and was wondering if
> anyone could advise on the CFLAG setting I'm using. The CPU is a
> Intel(R) Pentium(R) M processor 1.73GHZ stepping 08. Currently I've set
> CFLAGS="-02 -mcpu=pentium -pipe"

For my laptop with pentium M 1.6g, I set

CFLAGS="-O3 -march=pentium-m -pipe"

but you might want to keep -O2.... I run ~x86 on it as my testing box,
so I don't mind a little breakage here and there. 

W

-- 
"When I say unbounded, I mean...not bounded."
~DeathMech, S. Sondhi. P-town PHY 205
Sortir en Pantoufles: up 19:33
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Re: [gentoo-user] CFLAGS setting for Intel(R) Pentium(R) M processor 1.73GHZ stepping 08

[赵光]

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CFLAGS="-O3 -march=pentium-m -pipe"

i prefer this

2005/10/23, Willie Wong <wwong@princeton.edu>:
>
> On Sun, Oct 23, 2005 at 01:31:32AM +1000, Richard Watson wrote:
> > I've just got a new laptop I'm installing Gentoo on and was wondering if
> > anyone could advise on the CFLAG setting I'm using. The CPU is a
> > Intel(R) Pentium(R) M processor 1.73GHZ stepping 08. Currently I've set
> > CFLAGS="-02 -mcpu=pentium -pipe"
>
> For my laptop with pentium M 1.6g, I set
>
> CFLAGS="-O3 -march=pentium-m -pipe"
>
> but you might want to keep -O2.... I run ~x86 on it as my testing box,
> so I don't mind a little breakage here and there.
>
> W
>
> --
> "When I say unbounded, I mean...not bounded."
> ~DeathMech, S. Sondhi. P-town PHY 205
> Sortir en Pantoufles: up 19:33
> --
> gentoo-user@gentoo.org mailing list
>
>

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Re: [gentoo-user] CFLAGS setting for Intel(R) Pentium(R) M processor 1.73GHZ stepping 08

[Renat Golubchyk]

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Hi!

On Sun, 23 Oct 2005 01:31:32 +1000 Richard Watson <waty@bigpond.net.au>
wrote:
> I've just got a new laptop I'm installing Gentoo on and was wondering
> if anyone could advise on the CFLAG setting I'm using. The CPU is a
> Intel(R) Pentium(R) M processor 1.73GHZ stepping 08. Currently I've
> set CFLAGS="-02 -mcpu=pentium -pipe"

Use "-mcpu=pentium-m" for a Pentium-M CPU. (BTW, -mcpu is deprecated in
favor of -mtune.)
I use CFLAGS="-march=pentium-m -O2 -pipe -fomit-frame-pointer".

Cheers,
Renat

-- 
Probleme kann man niemals mit derselben Denkweise loesen,
durch die sie entstanden sind.
                                              (Einstein)

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Re: [gentoo-user] CFLAGS setting for Intel(R) Pentium(R) M processor 1.73GHZ stepping 08

[Richard Fish]

Richard Watson wrote:

>I've just got a new laptop I'm installing Gentoo on and was wondering if
>anyone could advise on the CFLAG setting I'm using. The CPU is a
>Intel(R) Pentium(R) M processor 1.73GHZ stepping 08. Currently I've set
>CFLAGS="-02 -mcpu=pentium -pipe"
>  
>

With a 2.13Ghz pentium-m, I am using:
CFLAGS="-march=pentium-m -Os -fomit-frame-pointer -pipe"

I recommend using either -Os or -O3 with the pentium-m.  In my 
experience, -Os and -O3 provide slightly better overall performance than 
-O2, although I should mention a few things will probably run slower.  
As far as mmx, sse, and the like, I'd say enable those through USE flags 
for those packages that support them.

Also, be sure you are using the latest version (3.4.4) of gcc by running 
"gcc-config -l".

-Richard

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[gentoo-user] Re: CFLAGS setting for Intel(R) Pentium(R) M processor 1.73GHZ stepping 08

[Jochen Schalanda]

On 10/22/2005 05:31 PM, Richard Watson wrote:
> I've just got a new laptop I'm installing Gentoo on and was wondering if
> anyone could advise on the CFLAG setting I'm using. The CPU is a
> Intel(R) Pentium(R) M processor 1.73GHZ stepping 08. Currently I've set
> CFLAGS="-02 -mcpu=pentium -pipe"

Honestly, did these CFLAGS ever work? I don't think GCC knows something
about a parameter called -02.
Anyway, I'm using CFLAGS="-O2 -march=pentium-m -pipe" on my Centrino
laptop for about 2 years now without problems. The architecture
pentium-m is available from GCC 3.4 on. GCC 3.3 doesn't support it. If
you use GCC 3.3.x, you should set CFLAGS="-O2 -march=pentium3 -pipe".

You should also take a look at [1] and [2].

[1]: http://gentoo-wiki.com/CFLAGS
[2]: http://gentoo-wiki.com/Safe_Cflags

--
Regards
Jochen
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Re: [gentoo-user] CFLAGS setting for Intel(R) Pentium(R) M processor 1.73GHZ stepping 08

[Bill Roberts]

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On 01:31 Sun 23 Oct     , Richard Watson wrote:
> I've just got a new laptop I'm installing Gentoo on and was wondering if
> anyone could advise on the CFLAG setting I'm using. The CPU is a
> Intel(R) Pentium(R) M processor 1.73GHZ stepping 08. Currently I've set
> CFLAGS="-02 -mcpu=pentium -pipe"
> --
> Thanks, Richard
> 
> -- 
> gentoo-user@gentoo.org mailing list
> 
I have:

CFLAGS="-02 -march=pentium4"

Seems to work nicely on my M processor.

Bill Roberts

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Re: [gentoo-user] CFLAGS setting for Intel(R) Pentium(R) M processor 1.73GHZ stepping 08

[Octavio Ruiz (Ta^3)]

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Bill Roberts, who happens to be smarter than you, thinks:
> On 01:31 Sun 23 Oct     , Richard Watson wrote:
> > I've just got a new laptop I'm installing Gentoo on and was wondering if
> > anyone could advise on the CFLAG setting I'm using. The CPU is a
> > Intel(R) Pentium(R) M processor 1.73GHZ stepping 08. Currently I've set
> > CFLAGS="-02 -mcpu=pentium -pipe"
> > --
> > Thanks, Richard
> > 
> > -- 
> > gentoo-user@gentoo.org mailing list
> > 
> I have:
> 
> CFLAGS="-02 -march=pentium4"

That's right, for "Dothan" processors, 'pentium4m' or 'pentium4' should be
used. 'pentium-m' and 'pentium3'+sse2 are for old centrino processors.

:-)

-- 
Ego sum ens omnipotens.

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Re: [gentoo-user] CFLAGS setting for Intel(R) Pentium(R) M processor 1.73GHZ stepping 08

[Qian Qiao]

On 10/23/05, Bill Roberts <billbalt@eyeofthequark.com> wrote:
> On 01:31 Sun 23 Oct     , Richard Watson wrote:
> > I've just got a new laptop I'm installing Gentoo on and was wondering if
> > anyone could advise on the CFLAG setting I'm using. The CPU is a
> > Intel(R) Pentium(R) M processor 1.73GHZ stepping 08. Currently I've set
> > CFLAGS="-02 -mcpu=pentium -pipe"
> > --
> > Thanks, Richard
> >
> > --
> > gentoo-user@gentoo.org mailing list
> >
> I have:
>
> CFLAGS="-02 -march=pentium4"
>
> Seems to work nicely on my M processor.
>

Are you sure -02 works? :P

-- Joe

--
There are 3 kinds of people in the world:
Those who can count, and those who can't.

Money can't buy everything.
Sometimes money can't even buy a gun...

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Re: [gentoo-user] CFLAGS setting for Intel(R) Pentium(R) M processor 1.73GHZ stepping 08

[Rafael Fernández López]

> On 01:31 Sun 23 Oct     , Richard Watson wrote:
>> I've just got a new laptop I'm installing Gentoo on and was wondering if
>> anyone could advise on the CFLAG setting I'm using. The CPU is a
>> Intel(R) Pentium(R) M processor 1.73GHZ stepping 08. Currently I've set
>> CFLAGS="-02 -mcpu=pentium -pipe"
>> --
>> Thanks, Richard
>>
>> --
>> gentoo-user@gentoo.org mailing list
>>
> I have:
>
> CFLAGS="-02 -march=pentium4"
>
> Seems to work nicely on my M processor.
>
> Bill Roberts
>

I have CFLAGS="-O3 -mtune=pentium-m"

This boosts the computer at the maximum level !!

Bye,
Rafael Fernández López.
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Re: [gentoo-user] CFLAGS setting for Intel(R) Pentium(R) M processor 1.73GHZ stepping 08

[Sascha Lucas]

Hi Richard,


> I've just got a new laptop I'm installing Gentoo on and was wondering if
> anyone could advise on the CFLAG setting I'm using. The CPU is a
> Intel(R) Pentium(R) M processor 1.73GHZ stepping 08. Currently I've set
> CFLAGS="-02 -mcpu=pentium -pipe"

You may look at http://gentoo-wiki.com/Safe_Cflags#Pentium-M_.2F_Centrino_.28Intel.29

If you use x86 (not ~x86) then you have a gcc < 3.4.3. The page above 
proposes to use: CFLAGS="-O2 -march=pentium3 -pipe". A friend of mine with 
a Pentium M uses CFLAGS="-O2 -march=pentium4 -pipe -fomit-frame-pointer", 
which is dangerous if you believe the wiki-page.

If you plan to use gentoo on many x86 systems with different CPU's and you 
want to share binarys. I recommend to use: CFLAGS="-O2 -march=i686 
-fomit-frame-pointer -pipe" (runs on any Intel/AMD/... starting from 
Pentium2-class CPU).

Sascha.

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Re: [gentoo-user] CFLAGS setting for Intel(R) Pentium(R) M processor 1.73GHZ stepping 08

[Walter Dnes]

On Sun, Oct 23, 2005 at 01:31:32AM +1000, Richard Watson wrote
> I've just got a new laptop I'm installing Gentoo on and was wondering if
> anyone could advise on the CFLAG setting I'm using. The CPU is a
> Intel(R) Pentium(R) M processor 1.73GHZ stepping 08. Currently I've set
> CFLAGS="-02 -mcpu=pentium -pipe"

  Boot that machine with any linux distro, install CD, rescue CD,
whatever, and issue the command...

cat /proc/cpuinfo

Post the output here and we can help you, and you can learn how to help
yourself in future.  The "flags" line is the most useful portion of the
output.

-- 
Walter Dnes <waltdnes@waltdnes.org> In linux /sbin/init is Job #1
My musings on technology and security at http://tech_sec.blog.ca
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