>32GB memory with Xeon ?

Hiroharu Tamaru tamaru at myn.rcast.u-tokyo.ac.jp
Tue Dec 26 09:34:41 PST 2006


Thanks for a very quick reply.

At Tue, 26 Dec 2006 15:33:34 +0000, Thomas Hurst wrote:
> * Hiroharu Tamaru (tamaru at 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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