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3 Commits

Author SHA1 Message Date
Chris Wilson
eb572106b4 igt/gem_shrink: Consume all of total ram in each process 
"Leak" the objects from each test until each process has allocated
enough objects to consume all of RAM.

Doing so from each process not only ensures we do stress the allocation
paths, but also obsoletes the separate purgeable helper.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
 2016-03-23 11:11:43 +00:00
Chris Wilson
a9436e6693 igt/gem_shrink: Include a shrinker vs GPU hang 
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
 2016-03-23 09:54:22 +00:00
Chris Wilson
54ec3782dc tests: Add gem_shrink 
This test exercise purely to exercise the shrinker under some common
stress (i.e. paths leading to i915_gem_object_get_pages()). We try to
fill the entirely of memory split amongst many processes so that each
individual process only consumes a small fraction of RAM (less than the
mappable aperture) and a single process should not be individually
blamed.

Based on an idea to have a seperate set of memory stress tests by Piotr
Luc.

Cc: Piotr Luc <piotr.luc@intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
 2016-03-23 09:41:54 +00:00