mailing-list for TeXmacs Users

["Sam Liddicott" <address@hidden>]

On 24/11/10 15:26, Alvaro Tejero Cantero wrote:
> TeXmacs 1.0.7.8 on Ubuntu 10.04 64 bit compiled with QT support enters
> a refresh loop in my system whereby about 3 lines are constantly
> visible, another 1-3 keep appearing-disappearing and the rest is
> blank.
>
> This also happens when visiting the documentation, so anybody can
> check (it is not document-dependent).

I noticed today that a paint loop leaves the CPU load very high.

Observation also leads me to say that I think the processing of a paint 
message will quit after certain time has been taken and paint the rest 
later.

If painting takes too long, then texmacs will get into a loop (perhaps 
qt doesn't easily report that a smaller region needs painting, or 
perhaps texmacs can't take advantage of this).

I had a case today where the problem did not go away by switching focus 
or covering the window, and even other texmacs windows which had painted 
fine (and hadn't been scrolled) couldn't paint.

The solution was to minimize them till the load went low, and then when 
I restored the stuck window it could paint.

I wonder if the paint used up CPU share to the degree that it could 
never get enough CPU to finish painting and so got stuck in a loop of 
always trying to paint.

Just a guess.

Sam

> -á.


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