OpenEuphoria

Re: documentation errors

• Posted by Jason Gade <jaygade at yahoo.com> Nov 25, 2004
• 623 views

Jason Gade wrote:
> 
> Robert Craig wrote:
> 
> > I found out today why the start-up of large programs can be 
> > very slow on old machines using 2.5 alpha.
> > I went back to my old Windows ME machine today
> > and did a bunch of careful performance measurements.
> > On my new beta version of the front-end (that I'm still improving),
> > I now get this:
> > 
> > 350 MHz Pentium II, 64 Mb RAM
> > Judith's IDE - 103,000 lines of code
> > 
> >                           2.5 alpha   2.5 beta (work in progress)
> > parse-time:                 15           13 
> > time-until SPLASH screen:   48           14
> > time until ready to use:    70           24  
> > 
> > There's more that I'm working on that will
> > improve this. Anyway the main finding
> > was that the time is wasted after the front end
> > is finished, and before the back-end starts,
> > as well as during the initial phase of the back-end.
> > It's due to inefficiencies with WATCOM's management
> > of the the heap. I've fixed that now.
> > 
> > This between-ends delay isn't a problem on newer machines.
> > On my XP machine, 1.8 GHz, 256MB RAM, the
> > time-until-ready-to-use is 6 seconds or less of which
> > about 2.5 seconds is parse time. The rest is
> > Judith's initializaton code.
> > 
> > Smaller programs parse faster (more lines/sec). 
> > The time to parse a program goes up somewhat 
> > more than linearly, due to there being thousands 
> > of symbols, longer sequences to append to, 
> > a bigger heap to search etc. But I guess I should
> > lower the 35000 figure a bit (or raise the CPU MHz),
> > since I'm using machine-generated C for the parser, 
> > rather than hand-coded C.
> > 
> > Regards,
> >    Rob Craig
> >    Rapid Deployment Software
> >    <a href="http://www.RapidEuphoria.com">http://www.RapidEuphoria.com</a>
> > 
> Okay, so is there any reason for you to stick with the Watcom compiler?  Can
> you try
> say the <a href="http://www.digitalmars.com" title="Digital Mars C/C++"></a>
> 
> Also, Digital Mars D language has a lot of features similar to Euphoria
> sequences in
> a compiled language.  Could it be used to implement Euphoria?
> 
> 
> j.
> 

Sorry, last message had badly formed HTML.  I'm not an HTML expert...
j.