linux-kernel - Re: [PATCH] MM : alloc_large_system_hash() can free some memory for non power-of-two bucketsize

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Message-ID: <20070521081139.GG19966@holomorphy.com>
Date:	Mon, 21 May 2007 01:11:39 -0700
From:	William Lee Irwin III <wli@...omorphy.com>
To:	Eric Dumazet <dada1@...mosbay.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	"linux-mm@...ck.org" <linux-mm@...ck.org>,
	linux kernel <linux-kernel@...r.kernel.org>,
	David Miller <davem@...emloft.net>
Subject: Re: [PATCH] MM : alloc_large_system_hash() can free some memory for non power-of-two bucketsize

William Lee Irwin III a ?crit :
>> The proper way to do this is to convert the large system hashtable
>> users to use some data structure / algorithm  other than hashing by
>> separate chaining.

On Sat, May 19, 2007 at 08:41:01PM +0200, Eric Dumazet wrote:
> No thanks. This was already discussed to death on netdev. To date, hash 
> tables are a good compromise.
> I dont mind losing part of memory, I prefer to keep good performance when 
> handling 1.000.000 or more tcp sessions.

The data structures perform well enough, but I suppose it's not worth
pushing the issue this way.


-- wli
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