Date: Sun, 1 Jun 2008 01:58:35 -0700 From: Jeremy Chadwick <koitsu@FreeBSD.org> To: Tz-Huan Huang <tzhuan@csie.org> Cc: Maslan <maslanbsd@gmail.com>, freebsd-hackers@freebsd.org Subject: Re: Is there any way to increase the KVM? Message-ID: <20080601085835.GA50415@eos.sc1.parodius.com> In-Reply-To: <6a7033710806010143y204341cepc43f7a14678f7736@mail.gmail.com> References: <6a7033710805302252v43a7b240x66ca3f5e3dd5fda4@mail.gmail.com> <319cceca0805311154w5f705b2cp771392cd86ba888@mail.gmail.com> <6a7033710805311201t4085edcpc2f1ac9fa554c000@mail.gmail.com> <319cceca0805311303o61729e0dta615c442b6bd03ce@mail.gmail.com> <6a7033710806010143y204341cepc43f7a14678f7736@mail.gmail.com>
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On Sun, Jun 01, 2008 at 04:43:48PM +0800, Tz-Huan Huang wrote: > On Sun, Jun 1, 2008 at 4:03 AM, Maslan <maslanbsd@gmail.com> wrote: > > Your are right PAE is for i386, i mean try running i386 freebsd with > > PAE enabled rather than amd64. PAE will let you access 64GB which is > > far than you got. > > The whole 8G physical memory is available in our system, the point we > concerned is that the kernel cannot use more than 2G memory in kernel > space. Your concern is justified; I don't think Maslan understands what it is you're describing. Yes, there is a 2GB limit for kmem_size. Yes, that limit applies to both i386 (with or without PAE) and amd64. Yes, it's a problem. And yes, it's absolutely a problem (especially when it comes to ZFS). > Since the server is on line now, we cannot re-install it to i386 to check this. > We'll try it if we have spare machines. Don't bother -- it won't fix the problem you're reporting. -- | Jeremy Chadwick jdc at parodius.com | | Parodius Networking http://www.parodius.com/ | | UNIX Systems Administrator Mountain View, CA, USA | | Making life hard for others since 1977. PGP: 4BD6C0CB |
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