[osg-users] Enabling Vsync gives dramatic increase in latency

[Robert Osfield]

Hi Björn,

What happens when using use Custom NVidia settings and SYNC_SWAP_BUFFERS=ON ?

Robert.

On 17 April 2015 at 13:58, Björn Blissing <bjorn.blissing at vti.se> wrote:
> Hi again,
>
> I also tried Roberts suggestion about using the trunk and OSG_SYNC_SWAP_BUFFERS=ON.
>
> To get better averages I took the measurements over 100 cycles:
>
> Recorded data:
> =========
> OSG 3.2.1 + Nvidia Defaults + VSync On:
> min_latency =  59ms
> max_latency =  65ms
> mean_latency =  62ms
>
> OSG Trunk +  Nvidia Defaults + VSync On + SYNC_SWAP_BUFFERS=OFF:
> min_latency =  59ms
> max_latency =  64ms
> mean_latency =  62ms
>
> OSG Trunk + Nvidia Defaults + VSync On + SYNC_SWAP_BUFFERS=ON:
> min_latency =  42ms
> max_latency =  48ms
> mean_latency =  45ms
>
> OSG Trunk + Custom Settings as previous + VSync On:
> min_latency =  10ms
> max_latency =  40ms
> mean_latency =  21ms
>
> Regards,
> Björn
>
> ------------------
> Read this topic online here:
> http://forum.openscenegraph.org/viewtopic.php?p=63450#63450
>
>
>
>
>
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