netdev - Re: cat /proc/net/tcp takes 0.5 seconds on x86

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Message-ID: <20080828072623.GJ26610@one.firstfloor.org>
Date:	Thu, 28 Aug 2008 09:26:23 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	Eric Dumazet <dada1@...mosbay.com>
Cc:	David Miller <davem@...emloft.net>, shemminger@...tta.com,
	andi@...stfloor.org, davej@...hat.com, netdev@...r.kernel.org,
	j.w.r.degoede@....nl
Subject: Re: cat /proc/net/tcp takes 0.5 seconds on x86_64

> You are right. For TCP hash table thats probably hard to implement.

The alternative would be to use some kind of cache optimized
tree. While they have in theory more steps if you assume that
the upper levels of the tree are very small and usually are cached
these steps could be very cheap.

-Andi
-- 
ak@...ux.intel.com
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