Date: Sat, 23 Jun 2001 22:44:52 -0700 (PDT) From: John Baldwin <jhb@FreeBSD.org> To: Attila Nagy <bra@fsn.hu> Cc: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: Re: cvs commit: src/sys/i386/i386 machdep.c Message-ID: <XFMail.010623224452.jhb@FreeBSD.org> In-Reply-To: <20010623214226.H67164-100000@scribble.fsn.hu>
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On 23-Jun-01 Attila Nagy wrote: > Hello, > >> > Hmm- can you have more than 4GB of memory on an i386? >> Yes, you can have up to 64gb on PPro's or later (at least, the CPU's >> support a 36-bit physical address space) but we don't currently >> support the extensions so we can't use more than 4 anyways. > Do you plan to support this feature in the future (for example in 5.0)? It's not easy. > I think it's not too easy and not an obvious task, but maybe it's worth > the extra work (people using big DBs on x86?)... Actually, it doesn't really help as much as it would seem, because the virtual address space of each process is still limited to 4gb, so it doesn't let you run larger processes, it just lets you fit more of them into memory. -- John Baldwin <jhb@FreeBSD.org> -- http://www.FreeBSD.org/~jhb/ PGP Key: http://www.baldwin.cx/~john/pgpkey.asc "Power Users Use the Power to Serve!" - http://www.FreeBSD.org/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe cvs-all" in the body of the message
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