Re: git-diff-tree -M performance regression in 'next'

From: Linus Torvalds <torvalds@osdl.org>
Date: Mar 12, 2006, 17:00 UTC
Message-ID: <Pine.LNX.4.64.0603120858230.3618@g5.osdl.org>
In-Reply-To: <7voe0bdeyr.fsf@assigned-by-dhcp.cox.net>

On Sun, 12 Mar 2006, Junio C Hamano wrote:

Show 10 quoted lines

> 
> On my otherwise idle Duron 750 with slow disks, I am getting
> something like these:
> 
> 0.99.9m : 130m virtual, 40m resident, (0major+14205minor)
>           67.62user 0.08system 1:15.95elapsed
> master  : 130m virtual, 40m resident, (0major+12510minor)
>           66.06user 0.07system 1:10.95elapsed
> "next"  : 150m virtual, 65m resident, (0major+49858minor)
>           51.41user 0.45system 0.57.55elapsed

Any way to fix that "4 times as many page misses, and 70% bigger rss?" thing? It looks like you're not very careful about your memory use.

I realize that git in general wants a lot of memory, but I see that as a failure most of the time. I've got 2GB in most of my machines, but I shouldn't _need_ to have it..

			Linus