[Devel] [RFC PATCH 0/1]

[Dmitry Sepp]

This patch is intended to introduce a basic test set to verify memory.cache
behavior. I've encountered several limitations while running the tests:
 - Migration from one group to another is not supported. Page cache size
   restrictions of the destination group are not applied.
 - Page cache usage accounting seems to be rather lazy/imprecise. I introduced
   some "tolerance" of 15% of the maximum allowed page cache size but even
   after two seconds the reported current value lies outside of the boundaries
   (usually way below), which causes the test to fail.

Dmitry Sepp (1):
  selftests: cgroup: test page cache limiting feature

 tools/testing/selftests/cgroup/Makefile      |   4 +-
 tools/testing/selftests/cgroup/test_cache.sh | 254 +++++++++++++++++++
 tools/testing/selftests/cgroup/touch_pages.c |  97 +++++++
 3 files changed, 354 insertions(+), 1 deletion(-)
 create mode 100755 tools/testing/selftests/cgroup/test_cache.sh
 create mode 100644 tools/testing/selftests/cgroup/touch_pages.c

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2.51.0