[Urwid] Re: navigation speed
f.braennstroem at gmx.de
Tue Oct 31 04:57:40 EST 2006
* Ian Ward <ian at excess.org> wrote:
> Fabian Braennstroem wrote:
>> it's me again :-)
>> As I mentioned before, I would like to clone lfm to urwid
>> (at least I try) mainly because of its poor 'speed' on large
>> directories. Rebecca's 'filechooser' seems a lot faster
>> handling a lot of files... but testing more and more those
>> existing urwid examples, I get the feeling that the time I
>> gain in handling a lot of files I would lose in the
>> navigation. What I mean is, that going from one line to
>> another in a listbox takes some time, the navigation in
>> menus or in radiobutton groups seem pretty slow.
>> Is it just my feeling or could that be a drawback of urwid?
> I haven't spent very much time optimizing Urwid yet. That means there
> is still a lot of "low-hanging fruit". A change that would have a very
> large impact is to make rendering the screen only render those widgets
> that have changed since the last time the screen was rendered. Right
> now every visible widget is rendered on every screen update.
> There are also some big improvements that could be made by rewriting the
> performance-critical sections of code in C.
> The patches I have against 0.9.7.1 are all performance related. I think
> I might focus on performance for the next release.
> For the moment you could try applying the latest patch I posted in the
> "Unbearable slowness in UTF-8" thread:
Thanks! I will try the patch. Do you have any time schedule?
Would be nice to know :-)
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