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Date: Sun, 24 Mar 2002 22:40:34 -0800
From: "Martin J. Bligh" <Martin.Bligh@us.ibm.com>
Reply-To: "Martin J. Bligh" <Martin.Bligh@us.ibm.com>
To: Andrew Morton <akpm@zip.com.au>, Rogier Wolff <R.E.Wolff@BitWizard.nl>
cc: Linus Torvalds <torvalds@transmeta.com>, yodaiken@fsmlabs.com,
        Andi Kleen <ak@suse.de>, Paul Mackerras <paulus@samba.org>,
        linux-kernel@vger.kernel.org
Subject: Re: [Lse-tech] Re: 10.31 second kernel compile
Message-ID: <654911292.1017009632@[10.10.2.3]>
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> Frankly, all the discussion I've seen about altering page sizes
> threatens to add considerable complexity for very dubious gains.

If we don't mix page sizes, but just increase the default from
4k, does this still add a lot of complexity in your eyes? I can't
see why it would ... ?

> If someone can point at a real-world workload and say "we suck",
> and we can't fix that suckage without altering the page size then
> would that person please come forth.

I believe one of the traditional problems stated for this case is
the amount of virtual address space taken up by all the struct pages
for a machine with large amounts of memory (32-64Gb). At the moment, 
the obvious choice of architecture is still 32 bit, but maybe AMD 
Hammer will fix this ... Unless someone has a plan to move all those
up into highmem as well ....

M.

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