From: "Pop Sébastian" <pop@gauvain.u-strasbg.fr>
To: Matt Austern <austern@apple.com>
Cc: gcc@gcc.gnu.org
Subject: Re: Speed regression from 3.2 to 3.3
Date: Tue, 21 Jan 2003 07:57:00 -0000 [thread overview]
Message-ID: <20030121000454.GA24392@gauvain.u-strasbg.fr> (raw)
In-Reply-To: <24AB274A-2CD1-11D7-8443-00039390D9E0@apple.com>
On Mon, Jan 20, 2003 at 03:44:40PM -0800, Matt Austern wrote:
>
> I find the gc regression to be particularly interesting. First, note
> that
> this can't be accounted for by the bug that Geoff fixed. Even if it
> applied to this test case, which it doesn't, Geoff fixed it in the 3.3
> release branch a week ago. So what can the gc regression mean?
> Logically, I can only think of two possibilities: either the gc
> algorithm
> suddenly got worse, or else the gc is now working on twice as much
> memory as it used to. Both possibilities are a bit hard to believe, but
> the second strikes me as far more plausible than the first.
>
You could try to reverse gc changes to its 3.2 version and look wether
time spent in gc decreases or not...
next prev parent reply other threads:[~2003-01-21 0:05 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-01-21 7:41 Matt Austern
2003-01-21 7:57 ` Pop Sébastian [this message]
2003-01-21 16:08 ` Jan Hubicka
2003-01-22 10:58 ` Matt Austern
2003-01-22 19:23 ` Andrea 'fwyzard' Bocci
2003-01-22 19:30 ` Matt Austern
2003-01-22 20:45 ` Joe Buck
2003-01-22 20:48 ` Matt Austern
2003-01-22 23:13 ` Mark Mitchell
2003-01-22 20:48 Richard Guenther
2003-01-22 20:52 ` Matt Austern
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