Re: Newbie...

Thanks for the reply. It had been really helpfull.

Tina...
----- Original Message ----- 
From: "Tony Nugent" <[email protected]>
To: "Enigma" <[email protected]>
Sent: Saturday, May 17, 2003 6:46 PM
Subject: Re: Newbie... 


> On Sat May 17 2003 at 16:25, "System" wrote:
> 
> > On redhat.com I have seen various updates for
> > -athlon
> > - i386
> > - i586
> > - i686
> > 
> > Athlon and i386 I understand. But what does i586 and i686 systems are?
> 
> Hint: it describes the cpu architecture.
> 
> So the i586 refers to the original pentium chips, i686 to P-3 and
> later processors (celeron, P4, etc).  You'll soon see distros
> compiled for the new 64bit amd opteron processors (in fact redhat
> already have a downloadable beta distro available for it).
> 
> Only kernels, glibc and openssl are compiled cpu-optimised in redhat
> releases (usually).  The different versions of these binaries are
> put into separate directories in the updates directory on the ftp
> sites.  (You didn't mention the noarch updates, they are important
> too).
> 
> At install time, the anaconda installer is smart enough to detect
> which kernel is appropriate for the cpu and uses that by default
> version of the kernel by default.  If you have a pentium-3 (celeron
> etc), then it will use the i686 kernel and glibc packages.
> 
> If you are updating manually, you need to update the kernel with the
> right arch version for the cpu that will be running with it.  An
> athlon can happily run all four versions of the kernel, but an i686
> kernel will faulter (and problably not run at all) on an old i386.
> 
> You can rebuild the binaries of any .src.rpm package as optimised
> for the athlon or i586/i686 chipsets by using the --target flag...
> the compiler will happily build binaries optimised for the specified
> architecture.  You'll find the resulting binaries in a sub-directory
> in /usr/src/redhat/RPMS/ (the subdir has a name corresponding to the
> target, in just the same way that the updates are organised on the
> ftp sites).
> 
> > Thank you,
> > 
> > Tina..
> 
>   (BTW, why don't you change your name in your message headers from
>   "System" to "Tina"?)
> 
> Cheers
> Tony
> 
> 
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> 
>