On Sat, 2002-08-03 at 18:02, Russ Wright wrote:
> Hello all
>
> I was wondering (and that usually leads to mischief) I have a AMD K62-500
> processor and Redhat 7.3 i386. Can I recompile the entire set of srpms to be
> optimized for my processor? Would I even want to do that? Would I even see
> any benefit?
>
> I also have a Pentium 4 running Redhat i386 and I wonder the same question.
> Would I benefit from recompiling any parts of the OS? Or do I have to
> recompile the whole thing?
You should actually check out Gentoo (recently mentioned here) because
it does that as part of the install process. Each (and every) package
that gets installed is installed from source and compiled with
appropriate optimizations for your hardware platform.
Yeah, it only squeaks a few percent extra out, but it is cool.
--
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#!/usr/bin/perl -w
$_='while(read+STDIN,$_,2048){$a=29;$b=73;$c=142;$t=255;@t=map
{$_%16or$t^=$c^=($m=(11,10,116,100,11,122,20,100)[$_/16%8])&110;
$t^=(72,@z=(64,72,$a^=12*($_%16-2?0:$m&17)),$b^=$_%64?12:0,@z)
[$_%8]}(16..271);if((@a=unx"C*",$_)[20]&48){$h=5;$_=unxb24,join
"",@b=map{xB8,unxb8,chr($_^$a[--$h+84])}@ARGV;s/...$/1$&/;$d=
unxV,xb25,$_;$e=256|(ord$b[4])<<9|ord$b[3];$d=$d>>8^($f=$t&($d
>>12^$d>>4^$d^$d/8))<<17,$e=$e>>8^($t&($g=($q=$e>>14&7^$e)^$q*
8^$q<<6))<<9,$_=$t[$_]^(($h>>=8)+=$f+(~$g&$t))for@a[128..$#a]}
print+x"C*",@a}';s/x/pack+/g;eval
usage: qrpff 153 2 8 105 225 < /mnt/dvd/VOB_FILENAME \
| extract_mpeg2 | mpeg2dec -
http://www.cs.cmu.edu/~dst/DeCSS/Gallery/
http://www.eff.org/ http://www.anti-dmca.org/
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