Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> writes:
> On Wed, 14 Mar 2007, Junio C Hamano wrote:
>
>> "Alex Riesen" <raa.lkml@xxxxxxxxx> writes:
>>
>> > Now I'm happy :)
>> >
>> > ~/linux$ time git diff-tree -r -s v2.6.16 v2.6.20
>> >
>> > real 0m0.137s
>> > user 0m0.117s
>> > sys 0m0.020s
>> > ~/linux$ time ~/projects/git-diff/git-diff-tree -r --quiet v2.6.16 v2.6.20
>> >
>> > real 0m0.006s
>> > user 0m0.000s
>> > sys 0m0.007s
>>
>> You do not need diff-tree --quiet to do that!
>>
>> $ git-rev-parse v2.6.16^{tree} v2.6.20^{tree}
>
> Well, if you have a path-spec, it can certainly matter.
>
> Personally, I think it's more interesting if this can make a difference
> for something like
>
> git log v2.6.12.. -- drivers/ > /dev/null
>
> but that would require that we actually understand that we can stop early
> if we ever get to REV_TREE_DIFFERENT. I didn't check if you actually did
> that optimization.
The code is supposed to be there, but I haven't benched.
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