Bug 1116 - Terrible nv Xv performance
Summary: Terrible nv Xv performance
Status: RESOLVED INVALID
Alias: None
Product: xorg
Classification: Unclassified
Component: Driver/nVidia (open) (show other bugs)
Version: unspecified
Hardware: x86 (IA32) Linux (All)
: high normal
Assignee: Xorg Project Team
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Reported: 2004-08-17 22:50 UTC by Kyle Rose
Modified: 2004-11-11 05:37 UTC (History)
1 user (show)

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Description Kyle Rose 2004-08-17 22:50:08 UTC 
The NVIDIA proprietary driver uses basically 0% of the CPU, yet the open source
nv driver on the same hardware configuration isn't able to play 1080i HDTV
source video on my dual Opteron at full frame rate.
Comment 1 Thomas Winischhofer 2004-08-22 06:28:55 UTC 
That's assumingly because the binary driver uploads the video data using DMA
while the open source driver does a plain memcpy().

Besides, it might as well be that the binary driver does all that in the kernel
and hence doesn't appear to be using any CPU time in top.

This is not a bug.
Comment 2 Daniel Stone 2004-11-12 00:37:03 UTC 
yeah, we don't have anything from nVidia that would enable us to provide proper
acceleration.  sorry.

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