Re: [PATCH -mm] mm, huge page: Copy to access sub-page last when copy huge page

[Michal Hocko]

On Fri 18-05-18 11:03:16, Huang, Ying wrote:
[...]
> The patch is a generic optimization which should benefit quite some
> workloads, not for a specific use case.  To demonstrate the performance
> benefit of the patch, we tested it with vm-scalability run on
> transparent huge page.

It is also adds quite some non-intuitive code. So is this worth? Does
any _real_ workload benefits from the change?

>  include/linux/mm.h |  3 ++-
>  mm/huge_memory.c   |  3 ++-
>  mm/memory.c        | 43 +++++++++++++++++++++++++++++++++++++++----
>  3 files changed, 43 insertions(+), 6 deletions(-)
-- 
Michal Hocko
SUSE Labs