From: michael meeks <michael.meeks@novell.com>
To: Andrew Haley <aph@redhat.com>
Cc: Giovanni Bajo <rasky@develer.com>, gcc@gcc.gnu.org
Subject: Re: Large, modular C++ application performance ...
Date: Mon, 01 Aug 2005 09:45:00 -0000 [thread overview]
Message-ID: <1122889487.19624.111.camel@linux.site> (raw)
In-Reply-To: <17131.47092.25498.822504@zapata.pink>
On Sat, 2005-07-30 at 18:25 +0100, Andrew Haley wrote:
> > > All input much appreciated; no doubt my terminology is irritatingly up
> > > the creek, hopefully the sentiment will win through.
> > >
> > > http://go-oo.org/~michael/OOoStartup.pdf
>
> One thing I don't understand is the formula where you write linking
> time is proprortional to the log of the total number of symbols. Does
> this come from drepper's paper, or somewhere else?
I defer to Ulrich's text:
http://people.redhat.com/drepper/dsohowto.pdf
Section 1.5 of:
"Deficiencies in the ELF hash table function and various ELF extensions
modifying the symbol lookup functionality may well increase the factor
to O(R + r.n.log(s)) where s is the number of symbols. This should make
clear that for improved performance it is significant to reduce the
number of relocations and symbols as much as possible".
However - the log(s) term is rather irrelevant to my argument :-)
HTH,
Michael.
--
michael.meeks@novell.com <><, Pseudo Engineer, itinerant idiot
next prev parent reply other threads:[~2005-08-01 9:45 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-07-29 19:49 michael meeks
2005-07-29 20:19 ` Florian Weimer
2005-07-30 13:26 ` Nix
2005-07-30 13:36 ` Giovanni Bajo
2005-07-30 17:24 ` Andrew Haley
2005-08-01 9:45 ` michael meeks [this message]
2005-08-01 12:18 ` Steven Bosscher
2005-08-02 9:22 ` michael meeks
2005-08-01 9:39 ` michael meeks
2005-08-01 15:55 ` H. J. Lu
2005-08-02 9:59 ` michael meeks
2005-08-02 13:57 ` H. J. Lu
2005-08-02 16:15 ` michael meeks
2005-08-03 3:07 ` PATCH: Add export to linker map (Re: Large, modular C++ application performance ...) H. J. Lu
2005-08-01 16:59 ` Large, modular C++ application performance Dan Nicolaescu
2005-07-30 15:19 dank
2005-08-01 9:53 ` michael meeks
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