From: John Heffner <[EMAIL PROTECTED]>
Date: Tue, 14 Nov 2006 15:02:05 -0500

> The initial values of sysctl_tcp_mem are sometimes greater than the 
> total memory in the system (particularly on SMP systems).  This patch 
> ensures that tcp_mem[2] is always <= 3/4 nr_kernel_pages.

This is a genuine bug fix so I'll apply this, thanks for taking
care of these corner-case bugs in TCP sizing Jeff.

> However, I wonder if we want to set this differently than the way this 
> patch does it.  Depending on how far off the memory size is from a power 
> of two (exactly equal to a power of two is the worst case), and if total 
> memory <128M, it can be substantially less than 3/4.

Longer term, yes, probably a better way exists.

So you concern is that when we round to a power of 2 like we do
now, we often mis-shoot?

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