From: Robin Rosenberg <robin.rosenberg.lists@dewire.com>
Date: Sun, 18 Mar 2007 10:53:58 GMT
Subject: Re: [PATCH 2/2] Implement a simple delta_base cache
Message-ID: <200703181153.59768.robin.rosenberg.lists@dewire.com>
In-Reply-To: <Pine.LNX.4.64.0703172013340.6730@woody.linux-foundation.org>

söndag 18 mars 2007 04:31 skrev Linus Torvalds:
> I'd still like to see the KDE repo, that thing went quiet after it was 
> supposed to hit sneaker-net..
> 
> If it was 30 seconds before to do a "git log" for some individual file, 
> after the recent optimizations it should hopefully be down to 10. And I 
> agree that I might be more motivated to try to get it down further if I 
> could just find a repository where it's that much. 

I don't have the KDE repo, but I do have an Eclipse import. Without your
patches I get (hot cache)

# time git log -- org.eclipse.core.resources/src/org/eclipse/core/resources/ >/dev/null
65.10user 0.50system 1:12.44elapsed 90%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+80242minor)pagefaults 0swaps

With patch 1&2 (hot cache)

# time ~/SW/GIT/git-log -- org.eclipse.core.resources/src/org/eclipse/core/resources/ >/dev/null
27.51user 0.21system 0:28.23elapsed 98%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+80266minor)pagefaults 0swaps

That's quite an improvement The eclipse repo is about 140k commits in the master branch and 
has a 3GB pack file (fromcvs import). 

-- robin