Re: Following renames

From: Linus Torvalds <torvalds@osdl.org>
Date: Mar 27, 2006, 08:07 UTC
Message-ID: <Pine.LNX.4.64.0603270005330.15714@g5.osdl.org>
In-Reply-To: <e5bfff550603262147t3aec8da6p6bf2a333e2d35f1d@mail.gmail.com>

On Mon, 27 Mar 2006, Marco Costalba wrote:

Show 9 quoted lines

> 
> Historic Linux test (63428 revisions)
> 
> File: drivers/net/tg3.c
> Revisions that modify tg3.c : 292
> 
> With qgit
> 15s to retrieve file history (git-rev-list)
> 19.5s to annotate (git-diff-tree -p, current GNU algorithm, not new faster one)

.. and it does absolutely _nothing_ while it's doing that, does it?

> $ time git-whatchanged HEAD drivers/net/tg3.c > /dev/null
> 98.01user 2.44system 1:46.19elapsed 94%CPU (0avgtext+0avgdata 0maxresident)k
> 0inputs+0outputs (797major+43033minor)pagefaults 0swaps

In contrast, git-whatchanged will start outputting the recent changes immediately.

And that's the point. Almost always, we're interested in the _recent_ stuff. The fact that it takes longer to get the old history is not very important. You generally don't ask "what changed in this file" for a file that hasn't changed in five years.

		Linus