From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([208.118.235.92]:48786) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SguLU-0001zC-Bq for qemu-devel@nongnu.org; Tue, 19 Jun 2012 05:03:34 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1SguLN-0003OA-T6 for qemu-devel@nongnu.org; Tue, 19 Jun 2012 05:03:31 -0400 Received: from csmailer.cs.nctu.edu.tw ([140.113.235.130]:61518) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SguLN-0003Ns-9i for qemu-devel@nongnu.org; Tue, 19 Jun 2012 05:03:25 -0400 Received: from csmailer.cs.nctu.edu.tw (localhost [127.0.0.1]) by csmailer.cs.nctu.edu.tw (Postfix) with ESMTP id 36CAFD82 for ; Tue, 19 Jun 2012 17:03:23 +0800 (CST) Received: from alumni.cs.nctu.edu.tw (alumni.cs.nctu.edu.tw [140.113.235.116]) by csmailer.cs.nctu.edu.tw (Postfix) with ESMTP id E11C4D81 for ; Tue, 19 Jun 2012 17:03:22 +0800 (CST) Received: (from chenwj@localhost) by alumni.cs.nctu.edu.tw (8.14.4/8.14.4/Submit) id q5J93M2w040152 for qemu-devel@nongnu.org; Tue, 19 Jun 2012 17:03:22 +0800 (CST) (envelope-from chenwj) Resent-Message-ID: <20120619090322.GB37515@cs.nctu.edu.tw> Resent-To: qemu-devel@nongnu.org Message-ID: <4FE03FD4.4070508@redhat.com> Date: Tue, 19 Jun 2012 12:01:08 +0300 From: Orit Wasserman MIME-Version: 1.0 References: <20120613031426.GA8174@cs.nctu.edu.tw> <20120614031826.GA88265@cs.nctu.edu.tw> <20120618082803.GA49309@cs.nctu.edu.tw> <20120619075534.GB34488@cs.nctu.edu.tw> <4FE0347A.9040309@redhat.com> <20120619084939.GA37515@cs.nctu.edu.tw> In-Reply-To: <20120619084939.GA37515@cs.nctu.edu.tw> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Subject: Re: [Qemu-devel] How to measure guest memory access (qemu_ld/qemu_st) time? List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: =?UTF-8?B?IumZs+mfi+S7uyAoV2VpLVJlbiBDaGVuKSI=?= On 06/19/2012 11:49 AM, =E9=99=B3=E9=9F=8B=E4=BB=BB (Wei-Ren Chen) wrote: > Mind me CC this to ML? :) sure I will read the threads to understand more. Orit >=20 >> Well it was a while back (2008-9) ,the company was acquired by IBM a y= ear later : >> http://www.linux-kvm.org/wiki/images/9/98/KvmForum2008%24kdf2008_2.pdf >> I think stefan Hanjoczi worked there ... >> The company used the technology for cross platform guest support but c= laim to get speedup too >> (for ppc) don't think the speedup was related to mmu but more to the i= nstruction stream. >> I hope this is helpful. >=20 > Thanks. > =20 >> Do you have performance result for the cost of the address translation= ? >> If I understand you are concentrating on ARM ? >=20 > The whole discussion thread is on [1], and you can get some feel abou= t > the cost of address translation here [2]. Yes, ARM is our target right = now, > but I think we are not limit to it.=20 >=20 > Regards, > chenwj >=20 > [1] http://www.mail-archive.com/qemu-devel@nongnu.org/msg116159.html > [2] http://www.mail-archive.com/qemu-devel@nongnu.org/msg116404.html >=20