From: Anthony Liguori <anthony@codemonkey.ws>
To: Marcelo Tosatti <marcelo@kvack.org>
Cc: kvm-devel <kvm-devel@lists.sourceforge.net>,
Avi Kivity <avi@qumranet.com>
Subject: Re: [PATCH] KVM: large page support
Date: Sat, 23 Feb 2008 12:55:44 -0600 [thread overview]
Message-ID: <47C06C30.1070604@codemonkey.ws> (raw)
In-Reply-To: <20080223144430.GA1040@dmt>
Marcelo Tosatti wrote:
> Create large pages mappings if the guest PTE's are marked as such and
> the underlying memory is hugetlbfs backed.
>
> Gives a consistent 2% improvement for data copies on ram mounted
> filesystem, without NPT/EPT.
>
FWIW, with NPT, I'm seeing kernbench get about a 4% improvement in
performance with this patch with a 4-VCPU guest.
Very nice work!
Regards,
Anthony Liguori
> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
>
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next prev parent reply other threads:[~2008-02-23 18:55 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-02-23 14:44 [PATCH] KVM: large page support Marcelo Tosatti
2008-02-23 18:55 ` Anthony Liguori [this message]
2008-02-24 6:51 ` Avi Kivity
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