linux-kernel - Re: [PATCH v2 0/6] KVM: optimize memslots searching

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Date:	Sun, 20 Nov 2011 13:29:15 +0200
From:	Avi Kivity <avi@...hat.com>
To:	Xiao Guangrong <xiaoguangrong@...ux.vnet.ibm.com>
CC:	Marcelo Tosatti <mtosatti@...hat.com>,
	LKML <linux-kernel@...r.kernel.org>, KVM <kvm@...r.kernel.org>
Subject: Re: [PATCH v2 0/6] KVM: optimize memslots searching

On 11/18/2011 11:16 AM, Xiao Guangrong wrote:
> This is the more work base on my v1 patchset which is posted some months ago,
> it can be found at:
> https://lkml.org/lkml/2011/2/22/68
>
> Change log:
> - sort memslots base on its size and do the line search instead of binary
>   search base on gfn, it is from Avi's idea.
> - in order to reduce cache footprint, memslots are sorted in the array of
>   kvm->memslots->memslots[] and introduce a table to map slot id to index in
>   the array
>
> There is the performance result:
>
> autotest for RHEL.6.1 setup/boot/reboot/shutdown(average):
> ept=1:	before: 449.5	after: 447.8
> ept=0:	before: 532.7	after: 529.8
>
> kernbench(average):
> ept=1:	before: 127.94	after: 126.98
> ept=0:	before: 196.85	after: 189.66

Looks good, had a couple of comments but they're really minor.

-- 
error compiling committee.c: too many arguments to function

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