Re: AlphaCore 0.9 slow on a xp1000

[Sergey Tikhonov <tsv@xxxxxxxx>]

Hello,

Jay Estabrook wrote:

On Thu, Mar 10, 2005 at 12:04:19AM +0000, Carlos Rodrigues wrote:
  

I've finished installing AlphaCore 0.9 on a AlphaStation XP1000 to make 
some tests and everything is slow. Very slow indeed.

This machine used to have a SuSE 8.1 install and it was as snappy as one 
can expect from this hardware, but AlphaCore just drags its feet everywhere.

Ok, I haven't upgraded to 1.0a yet (still downloading), but I wanted to 
know if other people with this same hardware experienced the same thing.

This box, together with an ES40 are used to crunch numbers, so every bit 
of performance is needed. If this is expected behaviour, I'll just 
revert back to the old install.
    

Yes, I, too, experienced the "sluggishness" of AC-0.9.

And, to this point, AC-1.0a has been much better, feeling a good bit
more responsive in interactive use.

But it still feels a bit "pokey" compared to the old RH 7.2.

I don't know if this is a compiler/library issue; if it IS, you might
be happier sticking with those you know for performance critical
reasons, at least until it shakes out a bit more...
  

I just did a quick and durty test - compressing 14Mb file with "gzip -9" built by GCC and Compaq C compilers:
gcc 3.4.3 - 11.924 sec
ccc 6.5.6.002-1 - 11.019 sec

No special optimizations for ev56 processor were used. So, pure crunching might stay on the same level.
My wild guess is - it is a combination of kernel and glibc and latest hardware. :)
Like I said before - my AS200 flies comparing to RH 7.2.

Thank you,
--

---
Sergey Tikhonov
Solvo Ltd.
tsv@xxxxxxxx