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Date:      Mon, 26 May 2003 15:10:55 -0700
From:      Marcel Moolenaar <marcel@xcllnt.net>
To:        Narvi <narvi@haldjas.folklore.ee>
Cc:        mdodd@freebsd.org
Subject:   Re: Preliminary ELF prebinding patches available.
Message-ID:  <20030526221055.GA543@athlon.pn.xcllnt.net>
In-Reply-To: <20030527002446.F40030-100000@haldjas.folklore.ee>
References:  <20030526211923.GB579@dhcp01.pn.xcllnt.net> <20030527002446.F40030-100000@haldjas.folklore.ee>

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On Tue, May 27, 2003 at 12:34:18AM +0300, Narvi wrote:
> 
> On Mon, 26 May 2003, Marcel Moolenaar wrote:
> 
> >
> > Hence you need to generate it after you install, reinstall, upgrade
> > and remove packages. This means you have to collect more dependency
> > information beyond what we have now if you want to automate it. If
> > you don't automate it, prebinding will very likely not be used. It
> > will either not be created in the first place or will be stale and
> > unusable within weeks.
> >
> 
> The problem is more that say after upgarding libpng or libfreetype or
> libglib or similar, you will have to update way too large amount of
> prebinding caches or lose all the benefits. And this despitethe factthat
> no actual symbol information changed.

Yup. The amount of data and effort one has to devote to keep prebind
caches useable is not in relation to the effectiveness with which
prebind caches solve the runtime link overhead.

-- 
 Marcel Moolenaar	  USPA: A-39004		 marcel@xcllnt.net



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