From: Jeff King <peff@peff.net>
To: Nicolas Pitre <nico@fluxnic.net>
Cc: git@vger.kernel.org, Matthieu Moy <Matthieu.Moy@grenoble-inp.fr>,
Jay Soffian <jaysoffian@gmail.com>,
Junio C Hamano <gitster@pobox.com>,
Shawn Pearce <spearce@spearce.org>
Subject: Re: gc --aggressive
Date: Tue, 1 May 2012 13:16:40 -0400 [thread overview]
Message-ID: <20120501171640.GA16623@sigill.intra.peff.net> (raw)
In-Reply-To: <20120501162806.GA15614@sigill.intra.peff.net>
On Tue, May 01, 2012 at 12:28:06PM -0400, Jeff King wrote:
> > You could test this theory by commenting out the size comparisons in
> > type_size_sort() and re-run the test.
>
> I'll try this next.
Wow, it behaves horribly. I didn't even let the bigger tests run to
completion. Here is the output for git.git (the first line is from the
original, unmodified version of git with --window=10):
orig | 31.4M (100%) | 54s (100%)
10 | 44.0M (140%) | 169s (310%)
20 | 37.7M (120%) | 232s (428%)
40 | 33.6M (107%) | 331s (608%)
80 | 30.9M ( 99%) | 473s (868%)
160 | 29.4M ( 94%) | 696s (1279%)
Unless the window is increased a lot, the packs end up quite a bit
larger (and even still we spend a lot more CPU time).
-Peff
next prev parent reply other threads:[~2012-05-01 17:16 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-17 16:16 gc --aggressive Jay Soffian
2012-04-17 17:53 ` Jay Soffian
2012-04-17 20:52 ` Matthieu Moy
2012-04-17 21:58 ` Jeff King
2012-04-28 12:25 ` Jeff King
2012-04-28 17:11 ` Nicolas Pitre
2012-04-29 11:34 ` Jeff King
2012-04-29 13:53 ` Nicolas Pitre
2012-05-01 16:28 ` Jeff King
2012-05-01 17:16 ` Jeff King [this message]
2012-05-01 17:59 ` Nicolas Pitre
2012-05-01 18:47 ` Junio C Hamano
2012-05-01 19:22 ` Nicolas Pitre
2012-05-01 20:01 ` Jeff King
2012-05-01 19:35 ` Jeff King
2012-05-01 20:02 ` Nicolas Pitre
2012-05-01 17:17 ` Nicolas Pitre
2012-05-01 17:22 ` Jeff King
2012-05-01 17:47 ` Nicolas Pitre
2012-04-28 16:56 ` Nicolas Pitre
2012-04-17 22:08 ` Jeff King
2012-04-17 22:17 ` Junio C Hamano
2012-04-17 22:18 ` Jeff King
2012-04-17 22:34 ` Junio C Hamano
2012-04-28 16:42 ` Nicolas Pitre
2012-04-18 8:49 ` Andreas Ericsson
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