Messages in this thread | | | Date | Thu, 23 Apr 2015 13:23:23 -0700 | From | Andrew Morton <> | Subject | Re: [PATCH V2] Test compaction of mlocked memory |
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On Thu, 23 Apr 2015 14:41:34 -0400 Eric B Munson <emunson@akamai.com> wrote:
> On Thu, 23 Apr 2015, Sri Jayaramappa wrote: > > > Commit commit 5bbe3547aa3b ("mm: allow compaction of unevictable pages") > > introduced a sysctl that allows userspace to enable scanning of locked > > pages for compaction. This patch introduces a new test which fragments > > main memory and attempts to allocate a number of huge pages to exercise > > this compaction logic. > > > > Tested on machines with up to 32 GB RAM. With the patch a much larger > > number of huge pages can be allocated than on the kernel without the > > patch. > > > > Example output: > > On a machine with 16 GB RAM: > > sudo make run_tests vm > > ... > > ----------------------- > > running compaction_test > > ----------------------- > > No of huge pages allocated = 3834 > > [PASS] > > ... > > > > Signed-off-by: Sri Jayaramappa <sjayaram@akamai.com> > > Cc: linux-kernel@vger.kernel.org > > Cc: linux-api@vger.kernel.org > > Cc: Andrew Morton <akpm@linux-foundation.org> > > Cc: Eric B Munson <emunson@akamai.com> > > Reviewed-by: Eric B Munson <emunson@akamai.com>
Acked-by: Andrew Morton <akpm@linux-foundation.org>
I'm assuming that Shuah will process this one?
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