Date: Wed, 27 Dec 2006 02:34:52 +0900 From: Hiroharu Tamaru <tamaru@myn.rcast.u-tokyo.ac.jp> To: amd64@FreeBSD.org Subject: Re: >32GB memory with Xeon ? Message-ID: <sa6r6umv9vn.wl%tamaru@myn.rcast.u-tokyo.ac.jp> In-Reply-To: <20061226153334.GA42100@voi.aagh.net> References: <sa6lkku21j5.wl%tamaru@myn.rcast.u-tokyo.ac.jp> <20061226153334.GA42100@voi.aagh.net>
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Hi, Thanks for a very quick reply. At Tue, 26 Dec 2006 15:33:34 +0000, Thomas Hurst wrote: > * Hiroharu Tamaru (tamaru@myn.rcast.u-tokyo.ac.jp) wrote: > > > Specifically, I am thinking of a Dual-core x Dual-processor Xeon 5160, > > with 5000P chipset and something like 40GB of RAM. > > > > I'd appreciate if someone would tell me if the system can use the > > whole memory, and/or if one single process can use the whole memory > > (or at least most of it)? > > Should be fine, though I've only personally used systems with 16G, I've > had individual processes approach 30GB using swap (though not on > purpose, *cough*). Glad to hear, yes, and 30GB using swap surviving is a good news too ;-) I see that some Linux distro seems to have 32GB limit. So, if someone can confirm >32GB, I feel even safer.. ;-p > > Are there any other things to be noted? like.. some popular hardware > > not working with > 4GB memory and such. I don't need much fancy > > hardware, but would like to expect SATA disks, ATAPI CDs and Gb > > Ethernet NICs to work.. > > ata(4) has a poor history on systems with >=4G and more than one or two > disks, though I've not tried it recently; it always used to run out of > bounce pages and die, and I've not seen anything to suggest it's been > resolved. I bought an LSI MegaRAID (amr(4)) for the bulk of my storage. > > http://lists.freebsd.org/pipermail/freebsd-amd64/2006-March/007827.html > > No problems with if_bge/em, USB, etc. Here's a more useful list of > drivers: > > http://lists.freebsd.org/pipermail/freebsd-amd64/2006-March/007758.html Oh great, these saved me a lot of time searching. Thank you again. -- Hiroharu Tamaru
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