On 04/03/17 04:05, Alan Swanson wrote:
On Fri, 2017-03-03 at 12:24 +1100, Timothy Arceri wrote:
On 03/03/17 11:53, Marek Olšák wrote:
OK.
I also wonder if 1GB isn't too conservative. Today’s games take up
a
lot of space. My installed games occupy 480 GB. I could certainly
spare 10 GB for a shader cache if it improves gaming experience.
For
example, my ccache size is set to 27 GB, because 1 or 5 or 10 GB
wasn't enough for my use case. I assume some gamers would have a
similar attitude.
Yeah I agree that 1GB is probably too small. This was set by Carl
before
we even knew how much data we needed to cache.
I'm happy to set it at 4GB which would be a possible 8GB total.
We may need to cap it at 4GB for some platforms anyway, or at least
figure out a work around for this:
https://bugs.freedesktop.org/show_bug.cgi?id=93089
I wouldn't say that 1G was too small currently as, for example, the
cache for shader heavy DeusEx:MD is ~50M compressed per your commit
message. There is the mythical quote of 640K being enough but how many
games and applications do you need cached at once?
Well it's not like we reserve the space, we would just not be imposing a
small limit. The Dolphin emu is an example of an app that apparently
creates a very large amount of shaders.
A more relevant issue would then be the random eviction rather than
using LRU eviction.
Happy to accept patches. The random evict code was written before my
time on this.
However perhaps we could dynamically scale by checking statvfs and
quotactl to choose MAX[1G, MIN[10% user home filesystem, 10% user home
quota]]?
Again patches welcome :)
--
Alan.
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