On Sat, Nov 24, 2012 at 12:17:03PM +0800, Hillf Danton wrote:
> A thp contributes 512 times more than a regular page to numa fault stats,
> so deserves its own vm event counter. THP migration is also accounted.
>
I agree and mentioned it needed fixing. I did not create a new counter
but I properly account for PGMIGRATE_SUCCESS and PGMIGRATE_FAIL now. I
did not create a new NUMA_PAGE_MIGRATE counter because I didn't feel it
was necessary. Instead I just do this
count_vm_events(PGMIGRATE_SUCCESS, HPAGE_PMD_NR);
count_vm_numa_events(NUMA_PAGE_MIGRATE, HPAGE_PMD_NR);
> [A duplicated computation of page node idx is cleaned up]
>
Got it. Thanks
--
Mel Gorman
SUSE Labs
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