From: "Shawn O. Pearce" <spearce@spearce.org>
To: Nicolas Pitre <nico@cam.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
Chris Lee <clee@kde.org>, Junio C Hamano <junkio@cox.net>,
Git Mailing List <git@vger.kernel.org>
Subject: Re: git-index-pack really does suck..
Date: Tue, 3 Apr 2007 17:37:10 -0400 [thread overview]
Message-ID: <20070403213710.GK27706@spearce.org> (raw)
In-Reply-To: <alpine.LFD.0.98.0704031730300.28181@xanadu.home>
Nicolas Pitre <nico@cam.org> wrote:
> First, I truly believe we should have a 64-bit pack index and fewer
> larger packs than many small packs.
I'll buy that. ;-)
> Which leaves us with the actual pack index lookup. At that point the
> cost of finding an existing object and finding that a given object
> doesn't exist is about the same thing, isn't it?
Here's the rub: in the missing object case we didn't find it
in the pack index, but it could be loose. That's one failed
syscall per object if the object isn't loose. If the object
isn't loose, it could be that it was *just* removed by a
running prune-packed, and the packfile that it was moved
to was created after we scanned for packfiles, so time to
rescan...
--
Shawn.
next prev parent reply other threads:[~2007-04-03 21:37 UTC|newest]
Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-04-03 15:15 git-index-pack really does suck Linus Torvalds
[not found] ` <db 69205d0704031227q1009eabfhdd82aa3636f25bb6@mail.gmail.com>
[not found] ` <Pine.LNX.4.64.07 04031304420.6730@woody.linux-foundation.org>
[not found] ` <Pine.LNX.4.64.0704031322490.67 30@woody.linux-foundation.org>
[not found] ` <Pi ne.LNX.4.64.0704031413200.6730@woody.linux-foundation.org>
[not found] ` <alpine.LFD.0.98. 0704031836350.28181@xanadu.home>
2007-04-03 16:21 ` Linus Torvalds
2007-04-03 16:40 ` Nicolas Pitre
2007-04-03 16:33 ` Nicolas Pitre
2007-04-03 19:27 ` Chris Lee
2007-04-03 19:49 ` Nicolas Pitre
2007-04-03 19:54 ` Chris Lee
2007-04-03 20:18 ` Linus Torvalds
2007-04-03 20:32 ` Nicolas Pitre
2007-04-03 20:40 ` Junio C Hamano
2007-04-03 21:00 ` Linus Torvalds
2007-04-03 21:28 ` Nicolas Pitre
2007-04-03 22:49 ` Chris Lee
2007-04-03 23:12 ` Linus Torvalds
2007-04-03 20:56 ` Linus Torvalds
2007-04-03 21:03 ` Shawn O. Pearce
2007-04-03 21:13 ` Linus Torvalds
2007-04-03 21:17 ` Shawn O. Pearce
2007-04-03 21:26 ` Linus Torvalds
2007-04-03 21:28 ` Linus Torvalds
2007-04-03 22:31 ` Junio C Hamano
2007-04-03 22:38 ` Shawn O. Pearce
2007-04-03 22:41 ` Junio C Hamano
2007-04-05 10:22 ` [PATCH 1/2] git-fetch--tool pick-rref Junio C Hamano
2007-04-05 10:22 ` [PATCH 2/2] git-fetch: use fetch--tool pick-rref to avoid local fetch from alternate Junio C Hamano
2007-04-05 16:15 ` Shawn O. Pearce
2007-04-05 21:37 ` Junio C Hamano
2007-04-03 21:34 ` git-index-pack really does suck Nicolas Pitre
2007-04-03 21:37 ` Shawn O. Pearce [this message]
2007-04-03 21:44 ` Junio C Hamano
2007-04-03 21:53 ` Shawn O. Pearce
2007-04-03 22:10 ` Jeff King
2007-04-03 22:40 ` Dana How
2007-04-03 22:52 ` Linus Torvalds
2007-04-03 22:31 ` David Lang
2007-04-03 23:00 ` Nicolas Pitre
2007-04-03 21:21 ` Nicolas Pitre
2007-04-03 20:33 ` Linus Torvalds
2007-04-03 21:05 ` Nicolas Pitre
2007-04-03 21:11 ` Shawn O. Pearce
2007-04-03 21:24 ` Linus Torvalds
[not found] ` <alpine.LF D.0.98.0704031735470.28181@xanadu.home>
2007-04-03 21:42 ` Nicolas Pitre
2007-04-03 22:07 ` Junio C Hamano
2007-04-03 22:11 ` Shawn O. Pearce
2007-04-03 22:34 ` Nicolas Pitre
2007-04-03 22:14 ` Linus Torvalds
2007-04-03 22:55 ` Nicolas Pitre
2007-04-03 22:36 ` David Lang
2007-04-04 9:51 ` Alex Riesen
[not found] ` <P ine.LNX.4.63.0704061455380.24050@qynat.qvtvafvgr.pbz>
2007-04-06 21:56 ` David Lang
2007-04-06 22:47 ` Junio C Hamano
2007-04-06 22:49 ` Junio C Hamano
2007-04-06 22:22 ` David Lang
2007-04-06 22:55 ` Junio C Hamano
2007-04-06 22:28 ` David Lang
2007-04-03 23:29 ` Linus Torvalds
2007-04-03 20:34 ` Junio C Hamano
2007-04-03 20:53 ` Nicolas Pitre
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