On Tue, 28 May 2019 at 20:50, Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> wrote: > > Currently the purgeable objects, I915_MADV_DONTNEED, as mixed in the > normal bound/unbound lists. Every shrinker pass starts with an attempt > to purge from this set of unneeded objects, which entails us doing a > walk over both lists looking for any candidates. If there are none, and > since we are shrinking we can reasonably assume that the lists are > full!, this becomes a very slow futile walk. > > If we separate out the purgeable objects into own list, this search then > becomes its own phase that is preferentially handled during shrinking. > Instead the cost becomes that we then need to filter the purgeable list > if we want to distinguish between bound and unbound objects. > > Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> > Cc: Joonas Lahtinen <joonas.lahtinen@xxxxxxxxxxxxxxx> > Cc: Matthew Auld <matthew.william.auld@xxxxxxxxx> Makes sense, Reviewed-by: Matthew Auld <matthew.william.auld@xxxxxxxxx> _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
