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Date: Tue, 13 Nov 2007 14:02:17 -0800 (PST)
From: Christoph Lameter <clameter@sgi.com>
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To: Eric Dumazet <dada1@cosmosbay.com>
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Subject: Re: [patch 01/28] cpu alloc: The allocator
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On Tue, 13 Nov 2007, Eric Dumazet wrote:

> This is because NR_CPUS is defaulted to 32 on i386 (with a limit of 256), so
> reserving 256*256KB = 64 MB of virtual space might be too much. (this is half
> the typical vmalloc area)

It defaults to 8 except if you use a NUMA system.

config NR_CPUS
        int "Maximum number of CPUs (2-255)"
        range 2 255
        depends on SMP
        default "32" if X86_NUMAQ || X86_SUMMIT || X86_BIGSMP || X86_ES7000
        default "8"