Re: Very slow filter.cc

[Miroslaw Kwasniak]

On Wed, Jan 19, 2005 at 09:45:37AM +0100, David Bateman wrote:
> 
> t = cputime; y = filter(b,1,x); cputime - t
> 
> rather than using tic/toc and see if there is better consistency between 
> 2.0.17 and the 2.1.x versions...

$ sh run.sh
OCTAVE_VERSION = 2.0.17
ans = 2.0600
OCTAVE_VERSION = 2.1.50
ans = 15.380
OCTAVE_VERSION = 2.1.57
ans = 15.690
OCTAVE_VERSION = 2.1.63
ans = 14.060

2.1.63 is a little better because it's compiled for 686 - rest are debian
386 packages.
 
> If the problem remains, the next step woul dbe to profile the two 
> versions of octave to figure out what is taking the time. Though that is 
> likely to take a lot of effort...

I tried with LD_PROFILE but octave has PROF signal disabled :(
I would supprised if 2.0 is compilable with current tools.

Mirek



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