Re: [Qemu-devel] [PATCH 2/4] vnc: allow the Buffer to shrink again

[Daniel P. Berrange]

On Thu, Aug 27, 2015 at 12:18:52PM +0200, Peter Lieven wrote:
> currently the Buffer can only grow. This increases Qemu memory footprint
> dramatically since normally the biggest VNC updates are at connection time.
> But also after a VNC session has terminated there is one persistent buffer
> in queue->buffer which I have seen to increase to over 100MB and it is never
> getting smaller again.

Do you have any idea what caused the buffer to increase to 100MB in size
in the first place ? I would expect a full screen update would cause the
biggest buffer usage, and even for a 1920x1140 screen that should not
be anywhere near 100MB in size. IOW, i'm wondering if the 100MB usage
is symptomatic of a more serious bug somewhere else in the VNC code
that you're just masking you reducing buffer size afterwards.


Regards,
Daniel
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