Re: Plotting with 3.2.0 on Windows is SLOOOOOOWWWW

[Matthias Brennwald]

On Jul 29, 2009, at 2:17 AM, Tatsuro MATSUOKA wrote:

> Hello
>
> Hmmmmm!
>
> The slowness seem to strongly depends on the system.
>
> In the test previous post performed on the computer in my home  
> (Windows XP home Cereron M 1.2Ghz 512Mb
> Memory).
> I have tested the same tests by Matthias Brennwald on the computer  
> the university (Windows XP
> professionan HT Pentium 3.4GHz 1GB Memory)
>
> The speed of the tests on the octave 3.2 (3.2.0 MinGW distributed on  
> the OctaveForge and Octave 3.2.2
> built myself)is comparable to octave 3.0.5 MinGW distributed on the  
> OctaveForge).
> Of course the result for 3.0.5 is faster than that ion the computer  
> in mu home.  However it is
> reasonable to the different in CPU performance.  However the  
> difference octave 3.2 on MinGW is too big
> to attribute the cpu performance.
>
>
> Note that I do not use John's patch for this test.
>
> For the computer in my university, the John's patch seem to be not  
> needed.
> I will test again when I return to my home.
>
> Hello Matthias Brennwald
>
> Can you perform the test with John's patch by yourself?
>
> Regards
>
> Tatsuro

I don't think I am able to add this patch and recompile Octave myself  
on Windows. I am an absolute idiot when it comes to Windows, and I  
have never compiled anything on this platform. I don't even know what  
compilers and IDEs there are. So, I'd be very grateful if someone else  
with more experience could try this.

On Jul 29, 2009, at 6:02 AM, Tatsuro MATSUOKA wrote:

> Hello Matthias Brennwald
>
> The issue seems to be system denependent (Machine Spec.(kind of CPU,  
> amount of memory),
> OS (e.g. XP home, XP Professional, Vista Home Premium etc. ).
>
> Please make sure at that point in your reply.
>
> Regards
>
> Tatsuro

Thanks for pointing this out. Again, as I wrote above, I don't know  
much about Windows. All I know is that I have Windows XP. How do I  
tell which variant I have (home, Professional, whatever)? [Quick rant:  
I am using this at home, working for my job. So this should probably  
be home-professional or something. Rant off.]

I use two Windows machines, and I observed the slowness on both. The  
first is the machine in my laboratory (a Pentium-4 with about 2GHz and  
256MB memory, which I'll try to upgrade to 4GB) and the virtual  
machine running on my MacBook Pro (Core-2-duo at at 2.8 GHz, with the  
memory of the virtual machine set to 512 MB).

As a quick work around I thought I'd try the fltk plotting backend.  
This is MUCH faster. However, the fltk backend is not a useful  
alternative yet, because it does not handle text objects (axis labels,  
legends, plot titles).

Thanks for your help
Matthias