A final word on the situation with LyX and large files:
I deinstalled LyX 1.4.2 and 1.4.3 and went back to LyX 1.3.7 and the
problems essentially disappeared. I conclude that several bugs must have
been introduced in going from 1.3 to 1.4
+ In 1.3.7 I can start editing immediately. After some time
instant preview kicks in and I can happily continue editing
and scrolling while seeing the nice snippets.
- In 1.4.3, shortly after loading the file, everything freezes
("LyX not responding") for 3-4 minutes. Even after that waiting
time, instant preview snippets are only shown for the current page.
Scrolling is almost impossible, since it only works by half a page
at a time, then waiting several seconds for the next snipets, then
the next half page, etc.. Essentially impossible to move around.
A second bug that I had almost gotten used to in 1.4.x, but now I recall
that it had not been present in 1.3.x:
+ In 1.3.7, after changing some math, and after leaving the math
environment, the snippet is correctly updated instantly.
- In 1.4.2 and in 1.4.3 it often happens that I edit some math,
leave the environment and the old snippet is still shown. I must
enter the math environment again, just move the cursor a bit and
leave the environment again, before the snippet is correctly updated.
I recall that another user has reported this in this list, too.
I admit that I have the usual amount of math in my paper, but I should not
need to apologize for that. I use xy-pic a lot to draw commutative
diagrams. My paper has some 65 pages by now and I to my amazement, I found
1590 (1-5-9-0) pngs in
\Lokale Einstellungen\Temp\lyx_tmpdir3332a02116\lyx_tmpbuf0
Greetings,
H.Peter
>>>>>> "Abdelrazak" == Abdelrazak Younes <[EMAIL PROTECTED]> writes:
>
> Abdelrazak> I've tested again this document and the good news is that
> Abdelrazak> the performance will soon be a bit better in 1.5 with my
> Abdelrazak> forthcoming painting performance patch. But the problem I
> Abdelrazak> think Georg is right in that the problem lies in how lines
> Abdelrazak> and symbols are painted on screen with mathed.
>
> It would be interesting to know whether the situation improves when
> the TeX fonts are unavailable. This is the only difference I can think
> of between math and non-maths. It may be that these fonts are
> expensive to handle.
>
> JMarc
>
