[p4] Git/ BitKeeper comparisons

[David Ferguson]

Okay ...Anybody want to summarize experiences of usefulness/effectiveness of
Git or BitKeeper for large scale installations --
We've been wrestling with a particular feature/bug of Perforce for awhile now
...
Basically 
BranchA has changes 1-50
BranchB integrates 1-40 (of A) into B
BranchB integrates change 45 explicitly into B
BranchB then integrates 41-50 of A into B
 
Net result is that change 45 seems to be reapplied into B.
 
As a result of the above result, I've got a developer who is absolutely
convinced that we should shift to Git, or at least BitKeeper since they're so
much better at distributed source models.
 
I'll be handling a rebuttal concerning how good/ bad Perforce really is at
distributed source models (and the obvious corollary of how our code is NOT
distributable) but didn't really feel like spending a week playing with Git
and BitKeeper to learn their weaknesses.  So I figure I'll ask around for
Cliff's Notes.  Anybody got any?
 
-daf
David Ferguson
Manager of SCM team -- VMware