[XeTeX] little question

[jadolov k]

Yes, it works!!!!I have a lot of footnotes in my text, every footnote
reference number was marked with a \addfontfeature command, and so it was
very slow. Now it is going like a flash!
A.K.

2007/9/14, Jonathan Kew <jonathan_kew at sil.org>:
>
> On 13 Sep 2007, at 10:15 pm, jadolov k wrote:
>
> > Actually, I use the standard xetex installation that comes with Tex
> > Live 2007; I use the xdvipdfmx via the TexShop engine.
>
> OK.
>
> > But, unfortunately, the speed ratio is really the one I mentioned.
> > I thought it was the normal speed in TeX (since I always use
> > xetex), but once I've tried pdfLaTeX and I have been astonished
> > about the speed...
>
> Well, it's true that if you use only "traditional" TeX fonts via TFM
> files, typesetting is faster... that's true also if you use xetex to
> process such a document. There is a speed penalty for using Unicode/
> OpenType fonts directly. But it shouldn't be *that* bad!....
>
> > I will provide an example file soon.
>
> Looking at your example, I can't run it directly as it stands, as I
> don't have all the same Adobe fonts. But I suspect that one factor,
> at least, may be the way you're defining font features, using
> \addfontfeature within commands such as \bass, \prim,
> \cftchapterfont, \@makefnmark, and many others. While \addfontfeature
> can be handy, it makes the fontspec package and xetex engine work
> very hard, constructing a new font specification (which involves
> considerable examination of the fonts available), even if it ends up
> re-using the same final font as a previous time.
>
> If you look in the .log file, you'll see many, many reports from
> fontspec of the form:
> > Package fontspec Info: Defining font family for "Minion Pro" with
> > options [Mapp
> > ing=tex-text, Numbers={OldStyle,Proportional},,Numbers=
> > {Monospaced,OldStyle}] o
> > n input line 515.
> Each of these represents a relatively time-consuming operation, so it
> would be good to minimize them.
>
> It's much more efficient, therefore, to use fontspec's
> \newfontinstance command to pre-define commands for any font
> instances you will be using frequently, and then use these within
> your other macros.
>
> (I see that Will has just responded with a similar comment while I've
> been writing! But I'll go ahead and send this too.)
>
>
> JK
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