Re: Speed improvement of gnome-terminal

[Brian Cameron <Brian Cameron Sun COM>]

Soeren:

> > I suspect that the biggest performance boost that you could get out
> > of gnome-terminal would be to improve the way it interacts with the
> > Xserver.  I was recently working with the SunRay team and one of their
> > benchmarks showed that xterm used an average bandwidth consumption of
> > 2kbs while gnome-terminal used an average of 35-38kbs.
>
>
> FWIW, this was the first thing I checked when I looked at vte a while
> back, and it didn't seem to be doing this. The way I checked was to
> cat a large file and then check that the number of characters rendered
> was approximately the same as the number of characters in the file.  I
> could have missed something though.
>
> If it actually is the case that it re-renders everything on every
> scroll, then certainly that is the first thing to fix.

I might be wrong about the re-rendering, but I believe I am correct
about the fact that vte does not use Xcopy to quickly scroll regions.
Instead it seems to use gdk_window_invalidate_rect, which I suspect
is causing a more costly redraw.

--

Brian