linux-kernel - Re: [PATCHSET] percpu: generalize first chunk allocators and improve lpage NUMA support

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Message-ID: <20090625202642.GX6760@one.firstfloor.org>
Date:	Thu, 25 Jun 2009 22:26:42 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	Andi Kleen <andi@...stfloor.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Tejun Heo <tj@...nel.org>, linux-kernel@...r.kernel.org,
	x86@...nel.org, linux-arch@...r.kernel.org, mingo@...e.hu,
	tglx@...utronix.de, cl@...ux-foundation.org
Subject: Re: [PATCHSET] percpu: generalize first chunk allocators and improve lpage NUMA support

> I don't know why, but in the configuration I saw each percpu area was
> something like 1.8 MB.

That sounds like something that needs to be investigated and fixed then.
In a sense per cpu space is precious like stack space and shouldn't 
be wasted.

-Andi

-- 
ak@...ux.intel.com -- Speaking for myself only.
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