On 23.06.20 17:52, 孙世龙 sunshilong wrote: > Are there still some methods that could be used by the Linux kernel > to reduce memory fragmentation while both CONFIG-MIGRATION > and CONFIG-COMPACTION are disabled? We do have mobility grouping on pageblock order. Also, I think you can use ZONE_MOVABLE without migration and compaction, to at least locally limit unmovable fragmentation. > > Are there some system settings that could make for this goal? Why don't you want page compaction/migration? -- Thanks, David / dhildenb