linux-kernel - Re: [PATCH 06/24] net, diet: Use small UDP hash tables on small kernels

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Message-Id: <20140505.231121.1210034371289454749.davem@davemloft.net>
Date:	Mon, 05 May 2014 23:11:21 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	andi@...stfloor.org
Cc:	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	tom.zanussi@...ux.intel.com, ak@...ux.intel.com
Subject: Re: [PATCH 06/24] net, diet: Use small UDP hash tables on small
 kernels

From: Andi Kleen <andi@...stfloor.org>
Date: Mon,  5 May 2014 15:25:55 -0700

> From: Andi Kleen <ak@...ux.intel.com>
> 
> UDP has two hash tables, for UDP and UDP lite. Default
> them to 16 entries each on small kernels. This can be
> still overriden on the command line.
> 
> Signed-off-by: Andi Kleen <ak@...ux.intel.com>

Likewise, if you make it too small, overrunning the machine
is way too easy.  Maybe it's even more important in a lower
powered machine than a high powered one.
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