From: Andreas Dilger <adilger@turbolabs.com>
To: William Lee Irwin III <wli@holomorphy.com>,
Denis Vlasenko <vda@port.imtp.ilyichevsk.odessa.ua>,
"Martin J. Bligh" <Martin.Bligh@us.ibm.com>,
Barry Wu <wqb123@yahoo.com>,
linux-kernel@vger.kernel.org
Subject: Re: Can linux support ccNUMA machine now?
Date: Thu, 24 Jan 2002 12:19:52 -0700 [thread overview]
Message-ID: <20020124121952.A763@lynx.adilger.int> (raw)
In-Reply-To: <20020123003530.60778.qmail@web13903.mail.yahoo.com> <74750000.1011782724@flay> <20020123200405.D899@holomorphy.com> <200201241215.g0OCFSE10537@Port.imtp.ilyichevsk.odessa.ua> <20020124105008.E872@holomorphy.com>
In-Reply-To: <20020124105008.E872@holomorphy.com>; from wli@holomorphy.com on Thu, Jan 24, 2002 at 10:50:08AM -0800
On Jan 24, 2002 10:50 -0800, William Lee Irwin III wrote:
> On Thu, Jan 24, 2002 at 02:15:30PM -0200, Denis Vlasenko wrote:
> > Looks like running x86 with more than 16GB RAM is not a good idea.
> > If you need it, you need 64bit arch.
Actually, Andrea made a patch to move the page tables into HIMEM on
such machines. I believe it is in the latest -aa patch.
> Reducing overhead helps all boxen everywhere all the time. Turning the
> kernel upside-down for the corner case of 64GB isn't worth it, but
> finding more graceful ways to fail than not booting with no visible
> error messages, and perhaps extending the range of configurations where
> the kernel actually functions (within reason) by reducing space
> overhead is worthwhile.
Yes, there also have been several patches floating around to reduce
the size of struct page. I don't think any are in the kernel yet.
Cheers, Andreas
--
Andreas Dilger
http://sourceforge.net/projects/ext2resize/
http://www-mddsp.enel.ucalgary.ca/People/adilger/
next prev parent reply other threads:[~2002-01-24 19:21 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-01-23 0:35 Barry Wu
2002-01-23 10:45 ` Martin J. Bligh
2002-01-24 4:04 ` William Lee Irwin III
2002-01-24 16:15 ` Denis Vlasenko
2002-01-24 18:50 ` William Lee Irwin III
2002-01-24 19:19 ` Andreas Dilger [this message]
2002-01-24 20:48 ` William Lee Irwin III
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