netdev - Re: [PATCH net-next v2 3/3] reciprocal_divide: correction/update of the algorithm

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Message-ID: <1389937378.31367.470.camel@edumazet-glaptop2.roam.corp.google.com>
Date:	Thu, 16 Jan 2014 21:42:58 -0800
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Hannes Frederic Sowa <hannes@...essinduktion.org>
Cc:	netdev@...r.kernel.org, Austin S Hemmelgarn <ahferroin7@...il.com>,
	linux-kernel@...r.kernel.org, Jesse Gross <jesse@...ira.com>,
	Jamal Hadi Salim <jhs@...atatu.com>,
	Stephen Hemminger <stephen@...workplumber.org>,
	Matt Mackall <mpm@...enic.com>,
	Pekka Enberg <penberg@...nel.org>,
	Christoph Lameter <cl@...ux-foundation.org>,
	Andy Gospodarek <andy@...yhouse.net>,
	Veaceslav Falico <vfalico@...hat.com>,
	Jay Vosburgh <fubar@...ibm.com>,
	Jakub Zawadzki <darkjames-ws@...kjames.pl>,
	Daniel Borkmann <dborkman@...hat.com>
Subject: Re: [PATCH net-next v2 3/3] reciprocal_divide: correction/update of
 the algorithm

On Fri, 2014-01-17 at 05:29 +0100, Hannes Frederic Sowa wrote:

> Also I doubt the performance drop for SLAB will be that massive. Also it was
> already replaced by SLUB as the default SLAB allocator, which doesn't use
> reciprocal_divide.

Google servers use SLAB, not SLUB, for various reasons, and performance
is one of them.


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