linux-kernel - Re: [PATCH 4/7] netprio_cgroup: reimplement priomap expansion

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Message-ID: <20121120151322.GR15971@htj.dyndns.org>
Date:	Tue, 20 Nov 2012 07:13:22 -0800
From:	Tejun Heo <tj@...nel.org>
To:	Daniel Wagner <wagi@...om.org>
Cc:	serge.hallyn@...onical.com, ebiederm@...ssion.com,
	nhorman@...driver.com, tgraf@...g.ch, davem@...emloft.net,
	lizefan@...wei.com, cgroups@...r.kernel.org,
	containers@...ts.linux-foundation.org,
	linux-kernel@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: [PATCH 4/7] netprio_cgroup: reimplement priomap expansion

Hello,

On Tue, Nov 20, 2012 at 04:09:22PM +0100, Daniel Wagner wrote:
> Thanks for the explanation. I was pondering if the new size in power
> of two could be a bit too excessive and the allocation step could be
> linear, e.g. stick at 4096. target_id will increase linear,
> therefore linear increase might also be enough, no?

Well, power-of-two resizing tends to behave relatively well under most
cases and slab allocations are binned by power-of-two sizes, so
linearly growing it doesn't really buy anything.

Thanks.

-- 
tejun
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