From mboxrd@z Thu Jan  1 00:00:00 1970
From: Marcelo Tosatti <mtosatti@redhat.com>
Subject: Re: [PATCH 0/3 kvm-unit-tests] Dirty logging performance test
Date: Wed, 18 Jan 2012 11:50:50 -0200
Message-ID: <20120118135050.GA27395@amt.cnet>
References: <20120115124131.3b460d1d85194edaa251e635@gmail.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Cc: avi@redhat.com, kvm@vger.kernel.org
To: Takuya Yoshikawa <takuya.yoshikawa@gmail.com>
Return-path: <kvm-owner@vger.kernel.org>
Received: from mx1.redhat.com ([209.132.183.28]:31490 "EHLO mx1.redhat.com"
	rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP
	id S1757510Ab2ARNwR (ORCPT <rfc822;kvm@vger.kernel.org>);
	Wed, 18 Jan 2012 08:52:17 -0500
Content-Disposition: inline
In-Reply-To: <20120115124131.3b460d1d85194edaa251e635@gmail.com>
Sender: kvm-owner@vger.kernel.org
List-ID: <kvm.vger.kernel.org>

On Sun, Jan 15, 2012 at 12:41:31PM +0900, Takuya Yoshikawa wrote:
> My 32 bit host running on an intel core i3 box said:
> 
>   $ ./api/dirty-log-perf
>   dirty-log-perf: 262144 slot pages / 262144 mem pages
>   rip 804a74a
>   rip 804a74a
>   get dirty log:      51571 ns for          1 dirty pages
>   rip 804a74a
>   get dirty log:      81190 ns for          2 dirty pages
>   rip 804a74a
>   get dirty log:      66606 ns for          4 dirty pages
>   rip 804a74a
>   get dirty log:      60408 ns for          8 dirty pages
>   rip 804a74a
>   get dirty log:      46711 ns for         16 dirty pages
>   rip 804a74a
>   get dirty log:      83563 ns for         32 dirty pages
>   rip 804a74a
>   get dirty log:      74367 ns for         64 dirty pages
>   rip 804a74a
>   get dirty log:      87240 ns for        128 dirty pages
>   rip 804a74a
>   get dirty log:     140161 ns for        256 dirty pages
>   rip 804a74a
>   get dirty log:     191288 ns for        512 dirty pages
>   rip 804a74a
>   get dirty log:     981045 ns for       1024 dirty pages
>   rip 804a74a
>   get dirty log:    1000755 ns for       2048 dirty pages
>   rip 804a74a
>   get dirty log:    1122837 ns for       4096 dirty pages
>   rip 804a74a
>   get dirty log:    1362598 ns for       8192 dirty pages
>   rip 804a74a
>   get dirty log:    1202789 ns for      16384 dirty pages
>   rip 804a74a
>   get dirty log:    1598484 ns for      32768 dirty pages
>   rip 804a74a
>   get dirty log:    2456946 ns for      65536 dirty pages
>   rip 804a74a
>   get dirty log:    3366358 ns for     131072 dirty pages
>   rip 804a74a
>   get dirty log:    5634134 ns for     262144 dirty pages
> 
> Takuya Yoshikawa (3):
>   Add dirty logging performance test
>   dirty-log-perf: Split guest memory into two slots
>   dirty-log-perf: Take slot size from command line
> 
>  api/dirty-log-perf.cc |  144 +++++++++++++++++++++++++++++++++++++++++++++++++
>  config-x86-common.mak |    5 ++-
>  2 files changed, 148 insertions(+), 1 deletions(-)
>  create mode 100644 api/dirty-log-perf.cc

Applied, thanks.