Re: [Qemu-devel] Re: Extremely slow graphic updates

[Paul Brook <paul@codesourcery.com>]

> > So either my patch does something, or I have got my builds mixed up and
> > have some other patch in now that fixes it.  Maybe I will go do a fresh
> > checkout and build and test that then just to be sure.
>
> OK, must be my fault.  Seems it does run at proper speed with the
> current git tree even with remote X over ssh.  So one of the other
> patches recently must have fixed what caused the major slowness, or the
> network here has had a drastic drop in network traffic (I doubt that).

I fixed two things: 

r6373) Partial updates only update the effected area, not the whole screen. 
This effects both local and remote displays.

r6374) The virtual consoles coalesce multiple update regions into a single 
region. This tends to effect both local and remote displays.

If reverting the second patch "fixes" your problem then the bug is probably 
still latent. I just made the colsole code less dumb so that it doesn't 
matter so much in practice.

Paul