netdev - Re: [PATCH] udp: extend hash tables to 256 slots

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Message-Id: <20091006.223518.235187454.davem@davemloft.net>
Date:	Tue, 06 Oct 2009 22:35:18 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	eric.dumazet@...il.com
Cc:	rick.jones2@...com, netdev@...r.kernel.org
Subject: Re: [PATCH] udp: extend hash tables to 256 slots

From: Eric Dumazet <eric.dumazet@...il.com>
Date: Wed, 07 Oct 2009 07:33:09 +0200

> David Miller a écrit :
>> 
>> That's incredible that it's been that low for so long :-)
>> 
>> Bug please, dynamically size this thing, maybe with a cap of say 64K
>> to start with.  If you don't have time for it I'll take care of this.
> 
> 
> Well, we can not exceed 65536 slots, given the nature of UDP protocol :)
> 
> Do you mean a static allocation at boot time with a size that can be 
> overidden in cmdline(like tcp and ip route),
> 
> or something that can dynamically extends hash table at runtime ?

I mean dynamically size it between 256 and 65536 slots at boot time,
based upon memory size.
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