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Re: [PATCH 3/5] On a Linux kernel ask explicitely for a huge page in ggc

From: Andi Kleen <andi at firstfloor dot org>
To: Richard Guenther <richard dot guenther at gmail dot com>
Cc: Andi Kleen <andi at firstfloor dot org>, gcc-patches at gcc dot gnu dot org, Andi Kleen <ak at linux dot intel dot com>
Date: Mon, 10 Oct 2011 15:50:07 +0200
Subject: Re: [PATCH 3/5] On a Linux kernel ask explicitely for a huge page in ggc
References: <1318190141-1220-1-git-send-email-andi@firstfloor.org> <1318190141-1220-4-git-send-email-andi@firstfloor.org> <CAFiYyc125iSN7p8sGdc6fziuLLWGvvJEKRVw6HyB=VO79kgE+A@mail.gmail.com>

On Mon, Oct 10, 2011 at 12:15:14PM +0200, Richard Guenther wrote:
> On Sun, Oct 9, 2011 at 9:55 PM, Andi Kleen <andi@firstfloor.org> wrote:
> > From: Andi Kleen <ak@linux.intel.com>
> >
> > Benchmarks show slightly faster build times on a kernel
> > build, near the measurement error unfortunately.
> >
> > This will only work with a recent glibc that defines MADV_HUGEPAGE.
> 
> Will partial unmaps fail or split the page?

They split the page.

-Andi

References:
- Improve ggc-page fragmentation
  - From: Andi Kleen
- [PATCH 3/5] On a Linux kernel ask explicitely for a huge page in ggc
  - From: Andi Kleen
- Re: [PATCH 3/5] On a Linux kernel ask explicitely for a huge page in ggc
  - From: Richard Guenther

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