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
