Re:Scaling Mercurial at Facebook
by cstejerean on Tuesday January 07, 2014 @06:46PM
(#7020819)
Mercurial itself runs into issues way before git does, it's just that Facebook has essentially gutted a bunch of things out Mercurial in order to make the resulting thing fast (punting on things like computing status, downloading diffs, etc).
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No, git runs into issues before mercurial does. Just saying the opposite of reality doesn't make it so.
Did you even read the post? Stock git is significantly faster than stock mercurial, it's only after they hack it up that they make it faster.
There are some operations in which git is way slower than Mercurial. Two examples are cloning and blame/annotate. git's data structures are optimised for some operations, but not for others.