[PATCH 4 of 4] revlog: separate methods for deltas and key frames compression/decompression

[Durham Goode]

On 9/26/13 11:14 AM, "Wojciech Lopata" <lopek at fb.com> wrote:

># HG changeset patch
># User Wojciech Lopata <lopek at fb.com>
># Date 1380212200 25200
>#      Thu Sep 26 09:16:40 2013 -0700
># Node ID b7528dd2041110229810e71245eefa4d70aca648
># Parent  16ba1a7b494caeb45d24ca81d49bbc866af1e7c5
>revlog: separate methods for deltas and key frames
>compression/decompression
>
>This change makes possible:
>  1) to use different compression methods in various revlog subclasses
>  2) to use different compression methods for key frames and deltas

Do you have numbers showing what benefits an extension could get by doing
key frame and delta compression differently?