netdev - Re: [PATCH 03/16] tcp: Maintain dynamic metrics in local cache.

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Message-Id: <20120710.083306.1003488340031629044.davem@davemloft.net>
Date:	Tue, 10 Jul 2012 08:33:06 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	eric.dumazet@...il.com
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH 03/16] tcp: Maintain dynamic metrics in local cache.

From: Eric Dumazet <eric.dumazet@...il.com>
Date: Tue, 10 Jul 2012 17:31:38 +0200

> On Tue, 2012-07-10 at 08:07 -0700, David Miller wrote:
>> Maintain a local hash table of TCP dynamic metrics blobs.
>> 
>> Computed TCP metrics are no longer maintained in the route metrics.
>> 
>> The table uses RCU and an extremely simple hash so that it has low
>> latency and low overhead.  A simple hash is legitimate because we only
>> make metrics blobs for fully established connections.
>> 
>> Some tweaking of the default hash table sizes, metric timeouts, and
>> the hash chain length limit certainly could use some tweaking.  But
>> the basic design seems sound.
>> 
>> Signed-off-by: David S. Miller <davem@...emloft.net>
>> ---
> 
> Seems to lack namespace support, or maybe I missed something ?

It does, I'll have to add it.  Thanks for catching that.

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