netdev - Re: [PATCH net-next v4] rps: selective flow shedding during softnet overflow

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Message-Id: <20130423.184140.2020239496583590253.davem@davemloft.net>
Date:	Tue, 23 Apr 2013 18:41:40 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	willemb@...gle.com
Cc:	eric.dumazet@...il.com, netdev@...r.kernel.org,
	stephen@...workplumber.org
Subject: Re: [PATCH net-next v4] rps: selective flow shedding during
 softnet overflow

From: Willem de Bruijn <willemb@...gle.com>
Date: Tue, 23 Apr 2013 16:31:34 -0400

> - disable the kconfig option by default, as it is workload specific.

If this logic only kicks in during overload, I see no reason why we
shouldn't have this protection enabled unconditionally, all the time.

Does it hurt performance under normal workloads?

If the new logic is controlled by overload thresholds then it should
have no impact whatsoever in non-overload scenerios.
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