[PATCH 0/3] drm/amdgpu: Tweaks for high pressure on CPU visible VRAM

[Michel Dänzer]

On 20/05/17 06:26 PM, Marek Olšák wrote:
> On May 20, 2017 3:26 AM, "Michel Dänzer" <michel at daenzer.net
> <mailto:michel at daenzer.net>> wrote:
> 
>     On 20/05/17 01:14 AM, Marek Olšák wrote:
>     > Hi Michel,
>     >
>     > I've applied your series
> 
>     Thanks for testing it.
> 
>     > and it doesn't help with low Dirt Rally performance on Fiji. I see TTM
>     > buffer moves at 800MB/s and many VRAM page faults.
> 
>     Did you see this:
> 
>     >> Note that there's only little if any improvement of the average
>     framerate
>     >> reported, but the minimum framerate as seen on the HUD goes from
>     ~10 fps
>     >> to ~17.
> 
>     I.e. it mostly affects the minimum framerate and smoothness for me
>     as well.
> 
> 
> Without the series, I get 70 average fps. With the series, I get 30
> average fps. That might just be random bad luck. I don't know.

Hmm, yeah, maybe that was just one of the random slowdowns you've been
talking about in other threads and on IRC?

I can't reproduce any slowdown with these patches, even leaving visible
VRAM size at 256 MB.


-- 
Earthling Michel Dänzer               |               http://www.amd.com
Libre software enthusiast             |             Mesa and X developer