LinuxSA Mailing list archives

  From: Ben Kramer <ben@webmedia.com.au>
  To  : Steven Ellison <sellison@pcsa.net.au>
  Date: Sat, 15 Apr 2000 13:33:50 +0930

Re: SMP Just for fun - is it worth it, YEP

Hi Steve,

try compiling it with 3 threads (1 more threads than proccesors), from
some where I think I might have read (read: cant remember, may not be
true :-) that makes sure that the system is always busy.

I have a bp6 with 2x366 it compiles in under 3 minutes (under 180 secs),
while running KDE desktop, 128MB Ram, three threads.


ben....  :-)

Steven Ellison wrote:
> 
> Today I finnaly got a couple of Celeron 466 CPU's to try on an Abit BP6
> motherboard.  Due to circumstances I did not have any of my normal RedHat
> CD's at home so I thought I would try the Corel Linux CD.
> 
> I was supprised to find that it detected the SMP and installed an
> appropriate Kernel.  Eager to see what it could do I tried to think what I
> could use to do some sort of benchmark.  Well the only thing I could come
> up with quickly was to compile the kernel so I created a script to
> make clean
> make dep
> make bzImage
> with a test for elapsed time.
> 
> Well, the first 3 runs were all around 220 seconds so I thought lets try
> the -j2 switch to use both processors
> 
> make -j2 clean
> make -j2 dep
> make -j2 bzImage
> 
> After 3 runs they all turned exactly 139 seconds.
> 
> I love it!  It beats the 1/2 hour of the old AMD K5 100
> 
> Oh, slight cheat, the 466's are running at 525MHz  (75MHz bus speed)
> 
> Still, 220 down to 139 looks good to me.
> 
>         Steve
> 
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