From: "Joseph S. Myers" <jsm@polyomino.org.uk>
To: Richard Kenner <kenner@vlsi1.ultra.nyu.edu>
Cc: gcc-patches@gcc.gnu.org
Subject: Re: Patch to allow Ada to work with tree-ssa
Date: Fri, 25 Jun 2004 14:43:00 -0000 [thread overview]
Message-ID: <Pine.LNX.4.58.0406250926010.1909@digraph.polyomino.org.uk> (raw)
In-Reply-To: <10406241135.AA27656@vlsi1.ultra.nyu.edu>
On Thu, 24 Jun 2004, Richard Kenner wrote:
> As illustrated by the growth of GCC itself. My bootstrap plus testsuite
> run times on constant hardware have gone from under one hour a bit over
> three years ago to over three hours now (and this is artificially low
> because of the temporary disabling of Ada). Much of this is the growth in
> GCC itself, but a significant part must be GCC slowing down.
>
> Well, sure, but constant hardware isn't a good model of what's out there.
That is only the case over a sufficiently long period of time that
developers can reasonably be supposed generally to have upgraded their
hardware. I don't find three years such a period of time.
> From my perspective, bootstrap times have gone from nearly 24 hours
> when I first started working on GCC to 25 minutes recently and the
> latter includes Ada and Java, which were not in the 24 hour figure.
Is that 25 minutes a full toplevel "configure && make bootstrap"
(including all runtime libraries)? Does it include toplevel "make check"?
I don't recall specific figures for bootstrap times when I first built
2.7.x around 1996/7 on eight-times-slower hardware, but I think it was
much quicker than now and I get a configure && make bootstrap time of 2
minutes 20 seconds now for 2.7.2.3 (2 minutes 40 seconds with
BOOT_CFLAGS="-g -O2"). The source tree is now 8 times bigger, which
hardly justifies bootstrap and testsuite run (a plausible comparison, as
the old source tree size didn't include a testsuite and the new one does)
being 90 times slower; one might expect 8 times slower instead, matching
the increase in hardware speed.
--
Joseph S. Myers http://www.srcf.ucam.org/~jsm28/gcc/
jsm@polyomino.org.uk (personal mail)
jsm28@gcc.gnu.org (Bugzilla assignments and CCs)
next prev parent reply other threads:[~2004-06-25 9:36 UTC|newest]
Thread overview: 77+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-06-24 15:58 Richard Kenner
2004-06-24 16:04 ` Nathan Sidwell
2004-06-25 14:43 ` Joseph S. Myers [this message]
-- strict thread matches above, loose matches on Subject: below --
2004-07-29 19:02 Richard Kenner
2004-07-29 18:43 Richard Kenner
2004-07-29 17:12 Richard Kenner
2004-07-29 17:13 ` Diego Novillo
2004-07-29 17:57 ` Richard Henderson
2004-06-25 15:28 Richard Kenner
2004-06-28 15:09 ` Paolo Bonzini
2004-06-23 5:54 Richard Kenner
2004-06-23 2:32 Richard Kenner
2004-06-23 4:54 ` Bryce McKinlay
2004-06-23 0:16 Richard Kenner
2004-06-22 23:05 Richard Kenner
2004-06-23 11:42 ` Nathan Sidwell
2004-06-22 22:18 Richard Kenner
2004-06-23 1:07 ` Richard Henderson
2004-06-22 21:30 Richard Kenner
2004-06-22 22:04 ` Paul Brook
2004-06-22 21:27 Richard Kenner
2004-06-22 21:29 ` Mark Mitchell
2004-06-22 21:10 Richard Kenner
2004-06-22 21:12 ` Mark Mitchell
2004-06-22 22:16 ` Daniel Berlin
2004-06-22 21:07 Richard Kenner
2004-06-22 21:12 ` Bryce McKinlay
2004-06-22 21:05 Richard Kenner
2004-06-22 21:01 Richard Kenner
2004-06-22 20:54 Richard Kenner
2004-06-22 21:06 ` Paul Brook
2004-06-22 21:37 ` Richard Henderson
2004-06-22 20:44 Richard Kenner
2004-06-22 21:03 ` Mark Mitchell
2004-06-23 20:58 ` Geoffrey Keating
2004-06-22 20:40 Richard Kenner
2004-06-22 22:02 ` Nathan Sidwell
2004-06-22 22:27 ` Joseph S. Myers
2004-06-22 20:23 Richard Kenner
2004-06-22 20:37 ` Joseph S. Myers
2004-06-23 20:47 ` Geoffrey Keating
2004-06-24 14:59 ` Joseph S. Myers
2004-06-24 16:26 ` Richard Earnshaw
2004-06-24 19:57 ` Laurent GUERBY
2004-06-24 20:06 ` Diego Novillo
2004-06-24 20:24 ` Andrew Pinski
2004-06-24 22:35 ` Laurent GUERBY
2004-06-24 21:33 ` Laurent GUERBY
2004-06-24 21:01 ` Joseph S. Myers
2004-06-25 14:51 ` Richard Earnshaw
2004-06-22 20:22 Richard Kenner
2004-06-22 20:30 ` Mark Mitchell
2004-06-22 19:05 Richard Kenner
2004-06-22 20:10 ` Joseph S. Myers
2004-06-22 20:27 ` Andrew Haley
[not found] <10406221359.AA05860@vlsi1.ultra.nyu.edu>
2004-06-22 18:47 ` Richard Henderson
2004-06-22 18:33 Richard Kenner
2004-06-22 18:19 Richard Kenner
2004-06-22 18:36 ` Nathan Sidwell
2004-06-22 18:37 ` Nathan Sidwell
2004-06-22 18:45 ` Mark Mitchell
2004-06-22 17:05 Richard Kenner
2004-06-22 17:21 ` Andrew Haley
2004-06-22 19:01 ` Richard Henderson
2004-06-22 16:34 Richard Kenner
2004-06-22 16:33 Richard Kenner
2004-06-22 17:46 ` Mark Mitchell
2004-06-22 18:17 ` Joseph S. Myers
2004-06-22 18:52 ` Richard Henderson
2004-06-22 19:37 ` Zack Weinberg
2004-06-22 7:05 Richard Kenner
2004-06-22 7:29 ` Mark Mitchell
2004-06-22 9:14 ` Andrew Pinski
2004-06-22 14:16 ` Andrew Haley
2004-06-22 11:00 ` Richard Henderson
2004-06-22 13:52 ` Ranjit Mathew
2004-07-29 17:02 ` Diego Novillo
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