Date: Wed, 2 Sep 1998 14:54:45 +0200 From: Eivind Eklund <eivind@yes.no> To: Bruce Evans <bde@zeta.org.au> Cc: current@FreeBSD.ORG Subject: Re: ELF binaries size Message-ID: <19980902145445.24306@follo.net> In-Reply-To: <199809020750.RAA15197@godzilla.zeta.org.au>; from Bruce Evans on Wed, Sep 02, 1998 at 05:50:31PM %2B1000 References: <199809020750.RAA15197@godzilla.zeta.org.au>
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On Wed, Sep 02, 1998 at 05:50:31PM +1000, Bruce Evans wrote: > >I think Bruce is mistaking the dual mapping for a single mapping, > >on the theory that in a unified VM and buffer cache, there can be > >only one instance of a page hung off the VP. > > Nah. The dual mapping is precisely what costs a full page of real memory. Does this mean we have two copies instead of two mappings? If we had dual mapping only, we shouldn't be wasting anything beyond address space and mapping-entries, which is much less precious than actual physical memory pages... Or am I missing something that should be obvious here? Eivind. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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