Re: [RFC] Convert builin-mailinfo.c to use The Better String Library.

From: Wincent Colaiuta <win@wincent.com>
Date: Sep 7, 2007, 12:33 UTC
Message-ID: <E4A6490A-ABA9-4383-978E-C7F2E4BC9C23@wincent.com>
In-Reply-To: <46E13C0F.8040203@op5.se>

El 7/9/2007, a las 13:54, Andreas Ericsson escribió:

Show 23 quoted lines

> Johannes Schindelin wrote:
>> Hi,
>> On Fri, 7 Sep 2007, Andreas Ericsson wrote:
>>> Wincent Colaiuta wrote:
>>>> El 7/9/2007, a las 2:21, Dmitry Kakurin escribi?:
>>>>
>>>>> I just wanted to get a sense of how many people share this "Git  
>>>>> should
>>>>> be in pure C" doctrine.
>>>> Count me as one of them. Git is all about speed, and C is the  
>>>> best choice
>>>> for speed, especially in context of Git's workload.
>>>>
>>> Nono, hand-optimized assembly is the best choice for speed. C is  
>>> just
>>> a little more portable ;-)
>> I have a buck here that says that you cannot hand-optimise  
>> assembly (on modern processors at least) as good as even gcc.
>
>
> http://www.gelato.unsw.edu.au/archives/git/0504/1746.html
>
> I win. Donate $1 to FSF next time you get the opportunity ;-)

Well, you picked a very specific algorithm amenable to that kind of optimization: small, manageable, with a minimal and well-defined performance critical section that could be written in assembly. Note how a good chunk of the implementation was still in C. At most I'd give you 75 cents for that one. ;-)

Wincent