[Mesa-dev] [PATCH 1/3] winsys/radeon: Use separate caching buffer manager for each set of flags

Michel Dänzer michel at daenzer.net
Thu Oct 16 00:01:24 PDT 2014

On 15.10.2014 20:24, Marek Olšák wrote:
> With so many cache managers, memory usage might be a bigger problem.
> Usually when a cache manager fails to allocate a new buffer, it clears
> the cache and tries again. This is not so useful when there are a lot
> of them, because the other managers aren't cleared.
> A cache manager also has a limit on how large the cache can be to
> prevent the cache from taking too much memory. Again, with several
> cache managers, this becomes useless.
> Finally, buffers are released from the cache during buffer_create and
> buffer_destroy, so the managers really need to receive those 2 calls
> regularly. If a cache manager is unused for a while, the cache won't
> be cleared and it will occupy memory with old and unused buffers that
> could otherwise be freed.

That all makes sense. It turned out to be easier than I expected to use 
a single cache manager. :)

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

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