From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1N7UmW-0000lG-Cd for qemu-devel@nongnu.org; Mon, 09 Nov 2009 08:59:44 -0500 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1N7UmR-0000kg-90 for qemu-devel@nongnu.org; Mon, 09 Nov 2009 08:59:43 -0500 Received: from [199.232.76.173] (port=42581 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1N7UmR-0000kd-2n for qemu-devel@nongnu.org; Mon, 09 Nov 2009 08:59:39 -0500 Received: from e31.co.us.ibm.com ([32.97.110.149]:48092) by monty-python.gnu.org with esmtps (TLS-1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.60) (envelope-from ) id 1N7UmQ-0007nC-L1 for qemu-devel@nongnu.org; Mon, 09 Nov 2009 08:59:38 -0500 Received: from d03relay02.boulder.ibm.com (d03relay02.boulder.ibm.com [9.17.195.227]) by e31.co.us.ibm.com (8.14.3/8.13.1) with ESMTP id nA9DqXUn009957 for ; Mon, 9 Nov 2009 06:52:33 -0700 Received: from d03av01.boulder.ibm.com (d03av01.boulder.ibm.com [9.17.195.167]) by d03relay02.boulder.ibm.com (8.13.8/8.13.8/NCO v9.1) with ESMTP id nA9DxMQ4226708 for ; Mon, 9 Nov 2009 06:59:26 -0700 Received: from d03av01.boulder.ibm.com (loopback [127.0.0.1]) by d03av01.boulder.ibm.com (8.14.3/8.13.1/NCO v10.0 AVout) with ESMTP id nA9DxMLJ015514 for ; Mon, 9 Nov 2009 06:59:22 -0700 Message-ID: <4AF82039.9040400@us.ibm.com> Date: Mon, 09 Nov 2009 07:59:21 -0600 From: Anthony Liguori MIME-Version: 1.0 Subject: Re: [Qemu-devel] [RFC] virtio: Report new guest memory statistics pertinent to memory ballooning References: <1257461425.3121.22.camel@aglitke> <4AF6891D.3080308@redhat.com> In-Reply-To: <4AF6891D.3080308@redhat.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Avi Kivity Cc: agl@linux.vnet.ibm.com, qemu-devel@nongnu.org Avi Kivity wrote: >> >> >> (qemu) info balloon >> balloon: actual=1024 MB >> balloon: pswapin=0 pages >> balloon: pswapout=0 pages >> balloon: panon=3928 KB >> balloon: pgmajfault=0 >> balloon: pgminfault=247914 >> balloon: memfree=987032 KB >> balloon: memtot=1020812 KB >> >> Is this agreeable? >> > > It's important that these statistics be cross platform. Can you (or > someone knowledgeable in Windows) verify that all of these are > meaningful there? I'd expect it to be so with the possible exception > of panon. They don't have to all be cross platform. We can expose platform specific metrics via feature bits. We should only disable features that the guest has acknowledged. But of course, whenever possible, we want metrics to be meaningful cross platform. -- Regards, Anthony Liguori