From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:51821) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1X8Bxs-0001pu-F4 for qemu-devel@nongnu.org; Fri, 18 Jul 2014 13:29:09 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1X8Bxj-0006KU-Dc for qemu-devel@nongnu.org; Fri, 18 Jul 2014 13:29:00 -0400 Received: from mail-pa0-x22c.google.com ([2607:f8b0:400e:c03::22c]:62059) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1X8Bxj-0006KF-6y for qemu-devel@nongnu.org; Fri, 18 Jul 2014 13:28:51 -0400 Received: by mail-pa0-f44.google.com with SMTP id eu11so5812685pac.17 for ; Fri, 18 Jul 2014 10:28:49 -0700 (PDT) Message-ID: <53C95945.8010402@gmail.com> Date: Fri, 18 Jul 2014 22:58:37 +0530 From: Sanidhya Kashyap MIME-Version: 1.0 References: <1405596081-29701-1-git-send-email-sanidhya.iiith@gmail.com> <20140718105655.GB2384@work-vm> In-Reply-To: <20140718105655.GB2384@work-vm> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] [PATCH v4 0/8] Obtain dirty bitmap via VM logging List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: "Dr. David Alan Gilbert" Cc: Amit Shah , qemu list , Juan Quintela > > 1) Do you have some examples of output? > Can you see hot areas in the kernel or something else? > I looked at it sometimes back. I will try to provide some images (as suggested by you earlier) to see any consistently used areas. > 2) 'frequency' is probably the wrong name for the parameter you have; since > the parameter is actually the delay between epochs, where as frequency > would imply the number of epochs/second. > will surely change it to period. It is pointed out by Eric too. > 3) The change to runstates is interesting; up until now 'runstate' is really > mostly about the state of the CPU, but by adding migration/dumping to the > states you're trying to convey more in that single state variable; I'm not > quite sure if this is the right thing to do or not. > Is there any alternative that can allow us to execute only one of the processes - either migration or bitmap dump. One very basic approach that I have thought is about using a global variable but don't know whether that is a good option or not. Any other alternative is welcomed. ----- Sanidhya Kashyap