Date: Wed, 2 Sep 1998 17:50:31 +1000 From: Bruce Evans <bde@zeta.org.au> To: jdp@polstra.com, tlambert@primenet.com Cc: bde@zeta.org.au, current@FreeBSD.ORG, reilly@zeta.org.au Subject: Re: ELF binaries size Message-ID: <199809020750.RAA15197@godzilla.zeta.org.au>
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>> > I think it implies that elf wastes a full page of memory (the space >> > between the ':'s above) most of the time (unless the ':'s are on a >> > page boundary), while aout only wastes an average of half a page >> > (the space between the text ':' and the end of the page). >> >> But a.out has a repeat of the same situation at the juncture of data >> and bss, and ELF does not. > >In the disk image rather than in the memory image. > >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. Bruce To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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