netdev - Re: [PATCH] tcp_mem initialization

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Message-Id: <20070315.025839.104050310.davem@davemloft.net>
Date:	Thu, 15 Mar 2007 02:58:39 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	jheffner@....edu
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH] tcp_mem initialization

From: John Heffner <jheffner@....edu>
Date: Wed, 14 Mar 2007 17:25:22 -0400

> The current tcp_mem initialization gives values that are really too 
> small for systems with ~256-768 MB of memory, and also for systems with 
> larger page sizes (ia64).  This patch gives an alternate method of 
> initialization that doesn't depend on the cache allocation functions, 
> but I think should still provide a nice curve that gives a smaller 
> fraction of total memory with small-memory systems, while maintaining 
> the same upper bound (pressure at 1/2, max as 3/4) on larger memory systems.

Indeed, it's really dumb for any of these calculations to be
dependant upon the page size.

Your patch looks good, and I'll review it further tomorrow and
push upstream unless I find some issues with it.

Thanks John.

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