Further adventures in revlog compression

[Matt Mackall]

On Wed, 2012-06-06 at 12:19 -0700, Bryan O'Sullivan wrote:
> I've spent the past couple of days digging deeper into the potential of
> using lz4 as an alternative to zlib for compressing the contents of revlogs.

Not sure why you didn't respond to my earlier suggestion:

http://markmail.org/message/4ku54kxcs4obwso6

I'm really not very interested in decreasing manifest compression. I've
gotten numerous complaints that manifest disk space was already a
serious problem (and indeed, it's been a determining factor for several
projects in not using Mercurial).

You're probably the first person to ever suggest trading manifest size
for performance in this direction. If you didn't have the fairly unique
situation of having a very large history that was also very linear,
you'd probably be trying to go the other way.

-- 
Mathematics is the supreme nostalgia of our time.