I thought I should expand a little about the `libvncserver.a' issue. As
I said, the current version of the library, ver. 0.8, has this latency
issue. The CVS version of the library has the fix in it so, if you want
a truly usable VNC mouse, you have to check out the CVS version of
`libvncserver.a' and install it on your Xen machine. Once version 0.9
of this library is released this problem will go away.
--
Don Dugger
"Censeo Toto nos in Kansa esse decisse." - D. Gale
Donald.D.Dugger@xxxxxxxxx
Ph: (303)440-1368
>-----Original Message-----
>From: Dugger, Donald D
>Sent: Thursday, March 16, 2006 3:00 PM
>To: Keir Fraser
>Cc: xen-devel@xxxxxxxxxxxxxxxxxxx
>Subject: RE: [Xen-devel] [PATCH 3/3] Add shadow VRAM
>
>Keir-
>
>I've sent out two new patches (1a and 3a) that address this
>concern. I've removed the check for SSE2 at compile time for
>the VGA patch so that patch no longer touches the `configure' script.
>
>Unfortunately, the `configure' script still needs to be
>touched for VNC mouse support. The current version of
>`libvncserver.a' checks for 1 input event and then sleeps in
>its main loop. The sleep is short enough that you don't
>notice anything on the keyboard but this causes noticable
>latency for the mouse. I've talked Johannes Schindelin into
>adding a new field to the VNC control structuce that modifies
>this behavior to check for all input events and then go to
>sleep. Since it will be a while before this version of
>`libvncserver.a' is generally available the `qemu-dm' build
>procedure has to check for this new field and only set it if
>it's available.
>
>All the other feature of these paches remain the same and, I
>should point out, with the Summagraphics Tablet changes it's
>now possible to run Windows on a VMX guest under VNC.
>
>--
>Don Dugger
>"Censeo Toto nos in Kansa esse decisse." - D. Gale
>Donald.D.Dugger@xxxxxxxxx
>Ph: (303)440-1368
>
>>-----Original Message-----
>>From: Keir Fraser [mailto:Keir.Fraser@xxxxxxxxxxxx]
>>Sent: Wednesday, March 15, 2006 4:14 PM
>>To: Dugger, Donald D
>>Cc: xen-devel@xxxxxxxxxxxxxxxxxxx
>>Subject: Re: [Xen-devel] [PATCH 3/3] Add shadow VRAM
>>
>>
>>On 15 Mar 2006, at 23:13, Dugger, Donald D wrote:
>>
>>> Nice try but I thought of that :-) The code checks at run
>time also,
>>> for just the reason you state. Also, I did measure and the runtime
>>> check adds no measurable overhead.
>>
>>Can you get rid of the compile-time checks from your patch
>then, since
>>they're redundant.
>>
>>I think that, although we'd like to track qemu's source files, we'll
>>avoid their build system as much as possible. So I'd
>>definitely like to
>>avoid adding stuff into their configuration scripts.
>>
>> -- Keir
>>
>
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