Re: xf86-video-qxl performance

[Alon Levy <alevy@xxxxxxxxxx>]

On Wed, May 23, 2012 at 03:20:21PM -0500, Jeremy White wrote:
> I need to improve the performance of the xf86-video-qxl driver; aka
> xspice; by a fairly substantial margin.
> 
> I've set up a test case - LibreOffice over an 80 ms latency connection -
> that demonstrates that it's got quite a long way to go.  (The current
> case appears to suffer from an excessive set of draw fill operations).
> 
> Has any work been done on the 'Current plan' listed in the TODO?
> Can I help in any way?
> 
> Also, as a crazy idea, has anyone considered implementing a pure
> streaming video driver?  That is, what if we had a frame buffer driver,
> and then a thread that fired 29 times a second to drive a theora or vp8
> encoder, simply feeding the current frame at those intervals.
> 
> The advantage to that crazy proposal is that it would likely make the
> pure html5 client work 'perfectly'.  The obvious disadvantage is that it
> would consume a lot more cpu resources on the host, although it's not
> clear to me how substantial that would be.
> 
> Thoughts?

This one looks interesting:
http://lags.leetcode.net/codec.html

I also don't know vp8 enough, maybe it's possible to use it as
lossless? Also like Marc-Andre said, compression speed is a major issue.

> 
> Cheers,
> 
> Jeremy
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