Re: [Qemu-devel] [PATCH/RFC 0/7] Screendump to UNIX socket & in PNG format

[Stefan Hajnoczi]

On Wed, Mar 14, 2012 at 9:51 AM, Gerd Hoffmann <address@hidden> wrote:
>  Hi,
>
>> The most practical first step would be simply sending the ppm over a
>> socket from ppm_save().  The 'screendump' command today already blocks
>> so no new badness is being added.  There would be no threads or fancy
>> image encoding.
>
> Adding scaling / compression support will add more overhead though, so
> doing that without offloading screendump to a thread first is a bad idea
> I think.  Or at least have some numbers to see how bad it actually is.

I agree, that's why I suggest sending the ppm over a socket.  It
transports out the image data and QEMU itself doesn't do the
encoding/scaling.

Stefan