From: Dor Laor <dlaor@redhat.com>
To: Gordan Bobic <gordan@bobich.net>
Cc: kvm@vger.kernel.org
Subject: Re: KSM For All Via LD_PRELOAD?
Date: Wed, 09 Jun 2010 11:33:12 +0300 [thread overview]
Message-ID: <4C0F51C8.70802@redhat.com> (raw)
In-Reply-To: <4C0E8F3B.5060501@bobich.net>
On 06/08/2010 09:43 PM, Gordan Bobic wrote:
> Is this plausible?
>
> I'm trying to work out if it's even worth considering this approach to
> enable all memory used by in a system to be open to KSM page merging,
> rather than only memory used by specific programs aware of it (e.g.
> kvm/qemu).
>
> Something like this would address the fact that container based
> virtualization (OpenVZ, VServer, LXC) cannot benefit from KSM.
>
> What I'm thinking about is somehow intercepting malloc() and wrapping it
> so that all malloc()-ed memory gets madvise()-d as well.
>
> Has this been done?
>
> Or is this too crazy an idea?
It should work. Note that the the malloced memory should be aligned in
order to get better sharing.
>
> Gordan
> --
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next prev parent reply other threads:[~2010-06-09 8:31 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-06-08 18:43 KSM For All Via LD_PRELOAD? Gordan Bobic
2010-06-09 8:33 ` Dor Laor [this message]
2010-06-09 8:56 ` Paolo Bonzini
2010-06-09 10:31 ` Gordan Bobic
2010-06-10 7:33 ` Dor Laor
2010-06-10 9:03 ` Gordan Bobic
2010-06-10 7:44 ` Jes Sorensen
2010-06-10 9:09 ` Gordan Bobic
2010-06-10 11:27 ` Jes Sorensen
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