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

[Björn Blissing]

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

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