[Kst] : Huge performance problem under Windows

[Barth Netterfield]

Peter,

I want to second Nicolas' "thanks!" for your contributions here!

cbn

On Monday 16 November 2009 07:33:33 Peter Kümmel wrote:
> Brisset, Nicolas wrote:
> > Peter,
> >
> > you're my hero of the week-end! Thanks above all for that performance fix
> > which was really needed, but also for all the nice little improvements
> > here and there. I have just tested and it works very well.
> 
> Glad to see your are not worried about my commits.
> 
> > The locale problem is actually something I have on Linux as well and I
> > think it would make sense to add a checkbox to the ASCII config UI like:
> > "use '.' as decimal separator (ignore regional settings)"
> > I had actually already mentioned it on the kst list...
> 
> committed ;) will test it on Linux after this mail.
> 
> > There is just one thing I'm a bit surprised about: you blame MSVC's atof,
> > but I have always compiled kst Windows with Qt Creator which uses Cygwin,
> > and had the same performance problem. Well, I guess I don't need to
> > understand, as long as it works :-)
> 
> mingwm10.dll uses the msvc runtime library from studio 6, I assume it
>  simply maps to msvc's atof.
> 
> > You're of course welcome to contribute to kst further. I have no idea
> > whether you have any interest apart from platform-specific fixes, but I
> > think kst is a great tool and having the new version under Windows as
> > well will be great for its exposure. There are a lot of interesting
> > things on the roadmap, general or Windows-specific. To name just a few of
> > the latter in case you'd be interested to give a hand there: - creation
> > of a Windows installer (I think someone else wanted to look at that, and
> > I was thinking about trying NSIS, but you may know better) - reactivation
> > (i.e. port to kst2) and port to Windows of some data sources, like for
> > instance CDF or netCDF which are currently not built under Windows. Maybe
> > getdata (http://getdata.sourceforge.net/) would also be interesting,
> > though I have no idea whether it can run under Windows. But there are
> > specialists listening on this list, they will probably be able to say
> > that - memleak when using OpenGL (though that one is possibly also an
> > issue on Linux): each time you hover a different plot or resize the
> > window (thereby triggering a repaint) a few kB get lost...
> 
> I try to find it. Is OpenGL enabled by default on Windows?
> 
> Peter
> 
> > Don't hesitate to talk to us, we can find you something to do. You sure
> > don't want to get bored, do you :-)?
> >
> > Thanks again,
> >
> > Nicolas
> >
> >> -----Ursprüngliche Nachricht-----
> >> Von: Peter Kümmel [mailto:syntheticpp at gmx.net]
> >> Gesendet: Sonntag, 15. November 2009 14:36
> >> An: kst at kde.org
> >> Betreff: Re: [Kst] : Huge performance problem under Windows
> >>
> >> Peter Kümmel wrote:
> >>> Peter Kümmel wrote:
> >>>> atof is dead slow on Windows, on Linux atof is magnitudes faster.
> >>>> Measured with attached patch.
> >>>
> >>> I've replaced msvc's atof with a old bsd (V7) one, should be good
> >>> enough to read generated data.
> >
> > [...]
> >
> >> I've committed the atof replacement for windows.
> >> Now it loads gyrodata.dat within a second.
> >>
> >> Peter
> 
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