From: Carl-Daniel Hailfinger <c-d.hailfinger.kernel.2003@gmx.net>
To: Andi Kleen <ak@suse.de>
Cc: Henti Smith <bain@tcsn.co.za>,
linux-kernel@vger.kernel.org, lse-tech@lists.sourceforge.net
Subject: Re: [Lse-tech] Re: maximum possible memory limit ..
Date: Mon, 28 Apr 2003 17:11:59 +0200 [thread overview]
Message-ID: <3EAD44BF.30808@gmx.net> (raw)
In-Reply-To: <20030428141023.GC4525@Wotan.suse.de>
Andi Kleen wrote:
> > Linux supports up to 4 GB (~2^32 bytes) of memory on 32-bit
> > architectures and 64 GB (~2^36 bytes) on x86 with PAE. No other
>
>
> That's far too optimistic. 64GB will need patches, like the pgcl
> patch. It is unlikely to work out of the box. Just do the math.
[explanatory math snipped]
> Realistic limit currently is ~16GB with an IA32 box. For more you need
<marketingspeak>
This means ~16GB is available on IA32 right now with vanilla kernels,
and 64GB is available from vendors who are willing to apply the pgcl
patch. Conclusion: Linux supports 64GB on IA32
</marketingspeak>
> an 64bit architecture.
> > On 64-bit systems, Linux supports up to 16 EB (~2^64 bytes) of memory
That statement is OK?
Thanks,
Carl-Daniel
--
http://www.hailfinger.org/
next prev parent reply other threads:[~2003-04-28 14:59 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-04-24 18:05 maximum possible memory limit Henti Smith
2003-04-24 18:35 ` Valdis.Kletnieks
2003-04-26 7:11 ` Ingo Oeser
2003-04-28 13:08 ` Carl-Daniel Hailfinger
2003-04-28 14:10 ` [Lse-tech] " Andi Kleen
2003-04-28 15:11 ` Carl-Daniel Hailfinger [this message]
2003-04-28 15:16 ` Andi Kleen
2003-04-28 16:52 ` Dave Hansen
2003-04-28 16:58 ` Martin J. Bligh
2003-04-28 22:40 ` William Lee Irwin III
2003-04-28 23:50 ` Dave Jones
2003-04-29 0:00 ` William Lee Irwin III
2003-04-29 0:06 ` Dave Jones
2003-04-29 0:13 ` William Lee Irwin III
2003-04-28 22:34 ` William Lee Irwin III
2003-04-28 22:33 ` William Lee Irwin III
2003-04-29 4:02 ` William Lee Irwin III
2003-04-28 16:45 ` Dave Hansen
2003-04-28 16:57 ` Carl-Daniel Hailfinger
2003-04-28 17:13 ` Andi Kleen
2003-04-28 17:53 ` David Mosberger
2003-04-28 18:31 ` Gerrit Huizenga
2003-04-28 19:05 ` David Mosberger
2003-04-28 17:16 ` Dave Hansen
2003-04-28 17:36 ` Carl-Daniel Hailfinger
2003-04-28 17:44 ` Andi Kleen
2003-04-28 22:43 ` William Lee Irwin III
2003-04-28 22:43 ` William Lee Irwin III
2003-04-28 18:57 ` Anton Blanchard
2003-04-28 17:14 ` Andi Kleen
2003-04-28 17:26 ` Dave Hansen
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