linux-kernel - Re: [PATCH 3/3] Convert the UDP hash lock to RCU

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Message-ID: <20081007083750.GB17079@2ka.mipt.ru>
Date:	Tue, 7 Oct 2008 12:37:51 +0400
From:	Evgeniy Polyakov <johnpol@....mipt.ru>
To:	Corey Minyard <minyard@....org>
Cc:	David Miller <davem@...emloft.net>, dada1@...mosbay.com,
	linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
	shemminger@...tta.com, paulmck@...ux.vnet.ibm.com
Subject: Re: [PATCH 3/3] Convert the UDP hash lock to RCU

On Mon, Oct 06, 2008 at 06:08:09PM -0500, Corey Minyard (minyard@....org) wrote:
> Would using SLAB_DESTROY_BY_RCU be ok, or would that be too expensive?

I tested skb destruction via RCU path, and got 2.5 times worse numbers
with small-packets-bulk-transfer workload.

For more details
http://tservice.net.ru/~s0mbre/blog/devel/networking/2006_12_05_1.html

-- 
	Evgeniy Polyakov
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