From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:33677) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZZG6h-00053T-6p for qemu-devel@nongnu.org; Tue, 08 Sep 2015 06:26:31 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ZZG6c-0000Bo-FA for qemu-devel@nongnu.org; Tue, 08 Sep 2015 06:26:30 -0400 Received: from e28smtp03.in.ibm.com ([122.248.162.3]:59640) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZZFjH-0007WU-Ha for qemu-devel@nongnu.org; Tue, 08 Sep 2015 06:02:20 -0400 Received: from /spool/local by e28smtp03.in.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Tue, 8 Sep 2015 15:32:14 +0530 Received: from d28relay03.in.ibm.com (d28relay03.in.ibm.com [9.184.220.60]) by d28dlp02.in.ibm.com (Postfix) with ESMTP id 7ACC93940053 for ; Tue, 8 Sep 2015 15:32:11 +0530 (IST) Received: from d28av02.in.ibm.com (d28av02.in.ibm.com [9.184.220.64]) by d28relay03.in.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id t88A2ANA16122030 for ; Tue, 8 Sep 2015 15:32:10 +0530 Received: from d28av02.in.ibm.com (localhost [127.0.0.1]) by d28av02.in.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id t88A150o012721 for ; Tue, 8 Sep 2015 15:31:08 +0530 Date: Tue, 8 Sep 2015 15:30:30 +0530 From: Bharata B Rao Message-ID: <20150908095915.GC678@in.ibm.com> References: <1431624680-20153-1-git-send-email-aarcange@redhat.com> <1431624680-20153-20-git-send-email-aarcange@redhat.com> <20150811100728.GB4587@in.ibm.com> <20150811134826.GI4520@redhat.com> <20150812052346.GC4587@in.ibm.com> <1441692486.14597.17.camel@ellerman.id.au> <20150908063948.GB678@in.ibm.com> <20150908085946.GC2246@work-vm> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20150908085946.GC2246@work-vm> Subject: Re: [Qemu-devel] [PATCH 19/23] userfaultfd: activate syscall Reply-To: bharata@linux.vnet.ibm.com List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: "Dr. David Alan Gilbert" Cc: kvm@vger.kernel.org, qemu-devel@nongnu.org, Sanidhya Kashyap , linux-mm@kvack.org, Andrea Arcangeli , zhang.zhanghailiang@huawei.com, Pavel Emelyanov , Michael Ellerman , Hugh Dickins , Mel Gorman , "Huangpeng (Peter)" , Andres Lagar-Cavilla , "Kirill A. Shutemov" , Dave Hansen , linux-api@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, Andy Lutomirski , Johannes Weiner , Paolo Bonzini , Andrew Morton , Linus Torvalds , Peter Feiner On Tue, Sep 08, 2015 at 09:59:47AM +0100, Dr. David Alan Gilbert wrote: > * Bharata B Rao (bharata@linux.vnet.ibm.com) wrote: > > In fact I had successfully done postcopy migration of sPAPR guest with > > this setup. > > Interesting - I'd not got that far myself on power; I was hitting a problem > loading htab ( htab_load() bad index 2113929216 (14848+0 entries) in htab stream (htab_shift=25) ) > > Did you have to make any changes to the qemu code to get that happy? I should have mentioned that I tried only QEMU driven migration within the same host using wp3-postcopy branch of your tree. I don't see the above issue. (qemu) info migrate capabilities: xbzrle: off rdma-pin-all: off auto-converge: off zero-blocks: off compress: off x-postcopy-ram: on Migration status: completed total time: 39432 milliseconds downtime: 162 milliseconds setup: 14 milliseconds transferred ram: 1297209 kbytes throughput: 270.72 mbps remaining ram: 0 kbytes total ram: 4194560 kbytes duplicate: 734015 pages skipped: 0 pages normal: 318469 pages normal bytes: 1273876 kbytes dirty sync count: 4 I will try migration between different hosts soon and check. Regards, Bharata.