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

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Date:	Tue, 20 Nov 2012 16:16:50 +0100
From:	Daniel Wagner <wagi@...om.org>
To:	Tejun Heo <tj@...nel.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

On 20.11.2012 16:13, Tejun Heo wrote:
> 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.

Convinced :)

Tested and Acked-by: Daniel Wagner <daniel.wagner@...-carit.de>

thanks,
daniel
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