Re: [PATCH v7 2/2] mm: support large folios swap-in for sync io devices

[Shakeel Butt]

On Wed, Aug 21, 2024 at 03:45:40PM GMT, hanchuanhua@xxxxxxxx wrote:
> From: Chuanhua Han <hanchuanhua@xxxxxxxx>
> 
> 
> 3. With both mTHP swap-out and swap-in supported, we offer the option to enable
>    zsmalloc compression/decompression with larger granularity[2]. The upcoming
>    optimization in zsmalloc will significantly increase swap speed and improve
>    compression efficiency. Tested by running 100 iterations of swapping 100MiB
>    of anon memory, the swap speed improved dramatically:
>                 time consumption of swapin(ms)   time consumption of swapout(ms)
>      lz4 4k                  45274                    90540
>      lz4 64k                 22942                    55667
>      zstdn 4k                85035                    186585
>      zstdn 64k               46558                    118533

Are the above number with the patch series at [2] or without? Also can
you explain your experiment setup or how can someone reproduce these?

> [2] https://lore.kernel.org/all/20240327214816.31191-1-21cnbao@xxxxxxxxx/