linux-kernel - Re: [RFC PATCH 1/5] net: implement support for low latency socket polling

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Message-Id: <20130305.145719.1469904264539814585.davem@davemloft.net>
Date:	Tue, 05 Mar 2013 14:57:19 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	eliezer.tamir@...ux.intel.com
Cc:	bhutchings@...arflare.com, eliezer.tamir@...ux.jf.intel.com,
	linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
	jesse.brandeburg@...el.com, e1000-devel@...ts.sourceforge.net,
	willemb@...gle.com, andi@...stfloor.org, hpa@...or.com,
	eliezer@...ir.org.il
Subject: Re: [RFC PATCH 1/5] net: implement support for low latency socket
 polling

From: Eliezer Tamir <eliezer.tamir@...ux.intel.com>
Date: Tue, 05 Mar 2013 19:15:26 +0200

> We are not very sensitive to this setting, anything on the order of
> your half round time trip plus a few standard deviations works well.
> We are busy waiting, so setting a higher value does not change the
> results much.

This makes the argument for using sched_clock() even stronger.
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