Daire Byrne wrote:
> On Thu, Dec 17, 2009 at 3:02 PM, Yaniv Kamay <yka...@redhat.com> wrote:
>   
>> Daire Byrne wrote:
>>     
>>>> spice.set_streaming_video on
>>>> spice.set_streaming_video off
>>>>
>>>>         
>>> I tried these but it doesn't seem to make any difference (returns
>>>
>>>       
>> I just tested it (Windows guest)
>> on     17817.84 Kbps
>> off     80964.24 Kbps
>>     
>
> Well I just retested and now they do work. The only thing I can think
> is that I since installed the vdagent? Still doesn't work for the
> Linux guest though but no matter.
>
>   
>> Do you have drops while video streaming is off?
>>     
>
> From a perception point of view it looks like when compressed it plays
> every second frame but the overall speed is consistent. With
> compression off it will play a 1 second batch of frames smoothly but
> then maybe stop for half a second or so. It's not that important to me
> - I just thought I'd mention it in case you thought everyone was
> seeing perfect playback/smoothness with the Windows driver.
>   
Can you give me more Information, I like to try and reproduce it (OS, 
networking, player, movie size,
and CPU etc.).

>   
>>> It is also interesting to compare the network throughput of moving a
>>> window around the desktop on both the Linux guest and Windows guest
>>> (Xorg vs. XP driver). For the XP case with a browser window with a
>>> blank page I see around 100K/s whereas with the Linux guest I get
>>> peaks of 800K/s. With VNC the windows guest does ~400K/s and the Linux
>>> guest ~2,500K/s. Obviously this is not a very scientific test and does
>>> not take into account the smoothness of the window updates.
>>>
>>>       
>> I asume you see better smoothness while using Spice.
>>     
>
> Yes the smoothness was much better with Spice - the scrolling is
> especially impressive compared to VNC.
>
>   
>>> Another thing I have noticed is that there is a slight difference in
>>> performance between the Linux Spice client and the Windows Spice
>>> client. Connecting to either the RHEL5.4 or WinXP guests from a
>>> Windows client gives better (hard to benchmark) interactive speeds
>>> (e.g. window redraws, scrolling, menu navigation) than when using the
>>> Linux client to the same guests. Is this simply to do with the OpenGL
>>> acceleration in the Linux client not being as good/mature as the GDI
>>> acceleration in the Windows client?
>>>       
>> Currently OpenGL is disabled in the release branch and enabled on the master
>> branch duo to bug that
>> is already fixed on the master branch. Also OpenGL acceleration is not
>> activated by default, the default is
>> using Cairo soft rendering. In order to use OpenGL you will need to have
>>  Nvidia GPU and Nvidia
>> driverd and to run the client with canvas-type option.
>>     
>
> Ah. That would explain that then. I work for a large pro graphics
> company and we run Linux+Nvidia only so that's no problem. What is the
> deal with the master branch? Can people download nightly snapshots or
> do you prefer to do regular releases for the time being instead?
>   
We'll do regular releases but anyone can take all master branches and 
build it from source. The rule
we go by is to always keep the repositories in working condition.
> Thanks again. I promise to be less curious from now on.
>
> Daire
>   


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