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

From: Lennart Sorensen
Subject: Re: [Qemu-devel] Re: Extremely slow graphic updates
Date: Wed, 21 Jan 2009 16:49:09 -0500
User-agent: Mutt/1.5.13 (2006-08-11)

On Wed, Jan 21, 2009 at 04:29:21PM -0500, Lennart Sorensen wrote:
> No it is not slow locally.
> Now can you explain why my patch made it no longer slow remotely because
> it did fix the problem for me.  can you explain why changing -serial and
> -parallel to /dev/null made it not slow?
> So without my patch it runs fine locally.  It runs slow remotely.
> With my patch it runs fine locally and remotely.
> Without my patch but using -serial /dev/null -parallel /dev/null it runs
> fine locally and remotely.
> Something more than just a dpy_update must be happening in dpy_copy.
> Looking at the code I don't quite see what it could be doing, unless
> there is a long list of listeners initiallized some of which do have a
> copy function.
> 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).

Looks like it is OK now then.

Len Sorensen

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