Re: [PATCH v2 1/1] mm: Always release pages to the buddy allocator in memblock_free_late().

[Ingo Molnar]

* Aaron Thompson <dev@xxxxxxxxxx> wrote:

> For example, on an Amazon EC2 t3.micro VM (1 GB) booting via EFI:
> 
> v6.2-rc2:
>   # grep -E 'Node|spanned|present|managed' /proc/zoneinfo
>   Node 0, zone      DMA
>           spanned  4095
>           present  3999
>           managed  3840
>   Node 0, zone    DMA32
>           spanned  246652
>           present  245868
>           managed  178867
> 
> v6.2-rc2 + patch:
>   # grep -E 'Node|spanned|present|managed' /proc/zoneinfo
>   Node 0, zone      DMA
>           spanned  4095
>           present  3999
>           managed  3840
>   Node 0, zone    DMA32
>           spanned  246652
>           present  245868
>           managed  222816   # +43,949 pages

[ Note the annotation I added to the output - might be useful in the changelog too. ]

So this patch adds around +17% of RAM to this 1 GB virtual system? That 
looks rather significant ...

Thanks,

	Ingo