[rescue] SS10/SM51 not as lame as you think...

[Patrick Giagnocavo +1.717.201.3366]

On Thu, Oct 10, 2002 at 12:52:44AM -0400, Patrick Giagnocavo +1.717.201.3366 wrote:

I just finished recompiling all of OpenBSD with -mcpu=v8 and
recompiled the lout program as well with this new optimization.  I
have added the new numbers in with the original results.

> x86: OpenBSD 3.0, AMD K6-2 450Mhz, 100MHZ PC100 RAM
> SPARC: OpenBSD 3.1, SM51 (50Mhz w 1MB cache), SS10 70 or 60ns RAM
> (there is not much difference between the 2 revs of the OSes)
> 
> So, the CPU differences in terms of MHz are 9x - 450 vs. 50; the SM51
> does however have a little more cache (I think the x86 has 256K).
> 
> x86 (first run, then second run of report text to PS file):
> time lout -I./ sample-report.pdf > s.ps
>     0.91s real     0.33s user     0.24s system
>     0.52s real     0.37s user     0.14s system
> 
> SPARC (as above):
>     1.61s real     1.36s user     0.21s system
>     1.60s real     1.34s user     0.23s system
NEW:
       1.75s real     1.11s user     0.24s system
       1.37s real     1.13s user     0.22s system

Not sure why the first run takes longer in wall time, but probably due
to disk - note that user time gets better, system about the same.
Either the timing mechanism is not good enough or there is just a
certain amount of overhead.

> Speed difference: up to 3x slower
> 
> 
> Now we convert the PS to PDF:
> x86:
> time ps2pdf s.ps s.pdf
>     1.48s real     0.68s user     0.17s system
>     0.76s real     0.63s user     0.12s system
> 
> SPARC:
>     2.75s real     1.84s user     0.35s system
>     2.18s real     1.85s user     0.30s system

NEW:

2.09s real     1.80s user     0.25s system

a slight improvement, nothing major

As I said before:

> Once I get the big reports running through the system I will run the
> tests again and post them back to the list, if there is interest...

Maybe Monday or Tuesday I will have some more data.

Cordially
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