Re: [PATCHv9 00/14] mm, x86/cc: Implement support for unaccepted memory

[Kirill A. Shutemov]

On Mon, Apr 03, 2023 at 04:42:54PM +0200, Vlastimil Babka wrote:
> Hmm yeah it can be noisy. Did you try to only count events that have
> fragmenting=1 and/or MIGRATE_MOVABLE as fallback_migratetype? As those are
> the really bad events.

I finally got around to retest it.

		total	fragmenting	movable	fragmenting&&movable
base-1:		957	583		353	0
base-2:		2715	2343		359	0
base-3:		2033	1669		353	0
patched-1:	1325	929		371	0
patched-2:	2844	2451		371	0
patched-3:	1304	917		361	0

fragmenting=1 is defined as fallback_order<pageblock_order which is most
of them.

Patched kernel showed slightly elevated movable(fallback_migratetype=1)
cases. Is it critical?

There's no allocations that is fragmenting and movable. Hm.

-- 
  Kiryl Shutsemau / Kirill A. Shutemov