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Date: 12 Jun 2004 15:11:49 +0200
Date: Sat, 12 Jun 2004 15:11:49 +0200
From: Andi Kleen <ak@muc.de>
To: Dave Hansen <haveblue@us.ibm.com>
Cc: Andi Kleen <ak@muc.de>, "Martin J. Bligh" <mbligh@aracnet.com>,
       torvalds@osdl.org,
       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
       Andy Whitcroft <apw@shadowen.org>, Andrew Morton <akpm@osdl.org>
Subject: Re: [PATCH] Permit inode & dentry hash tables to be allocated > MAX_ORDER size
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References: <263jX-5RZ-19@gated-at.bofh.it> <262nZ-56Z-5@gated-at.bofh.it> <263jX-5RZ-17@gated-at.bofh.it> <m3d645fwxj.fsf@averell.firstfloor.org> <1087025760.18615.3.camel@nighthawk>
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> Since vmalloc() maps the pages with small pagetable entries (unlike most
> of the rest of the kernel address space), do you think the interleaving
> will outweigh any negative TLB effects?  

I think so, yes (assuming you run the benchmark on all CPUs)

-Andi