From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-io0-f171.google.com (mail-io0-f171.google.com [209.85.223.171]) by kanga.kvack.org (Postfix) with ESMTP id D03B76B0038 for ; Tue, 8 Sep 2015 06:01:51 -0400 (EDT) Received: by ioiz6 with SMTP id z6so111673491ioi.2 for ; Tue, 08 Sep 2015 03:01:51 -0700 (PDT) Received: from e28smtp02.in.ibm.com (e28smtp02.in.ibm.com. [122.248.162.2]) by mx.google.com with ESMTPS id ra9si4588515pac.222.2015.09.08.03.01.50 for (version=TLSv1 cipher=AES128-SHA bits=128/128); Tue, 08 Sep 2015 03:01:51 -0700 (PDT) Received: from /spool/local by e28smtp02.in.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Tue, 8 Sep 2015 15:31:47 +0530 Received: from d28relay03.in.ibm.com (d28relay03.in.ibm.com [9.184.220.60]) by d28dlp01.in.ibm.com (Postfix) with ESMTP id 2D509E0054 for ; Tue, 8 Sep 2015 15:31:07 +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 t88A1dCt40173822 for ; Tue, 8 Sep 2015 15:31:41 +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 t88A150i012721 for ; Tue, 8 Sep 2015 15:31:07 +0530 Date: Tue, 8 Sep 2015 15:30:30 +0530 From: Bharata B Rao Subject: Re: [Qemu-devel] [PATCH 19/23] userfaultfd: activate syscall Message-ID: <20150908095915.GC678@in.ibm.com> Reply-To: bharata@linux.vnet.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> Sender: owner-linux-mm@kvack.org List-ID: To: "Dr. David Alan Gilbert" Cc: Michael Ellerman , Andrea Arcangeli , Andrew Morton , linux-kernel@vger.kernel.org, linux-mm@kvack.org, qemu-devel@nongnu.org, kvm@vger.kernel.org, linux-api@vger.kernel.org, zhang.zhanghailiang@huawei.com, Pavel Emelyanov , Johannes Weiner , Hugh Dickins , Sanidhya Kashyap , Dave Hansen , Andres Lagar-Cavilla , Mel Gorman , Paolo Bonzini , "Kirill A. Shutemov" , "Huangpeng (Peter)" , Andy Lutomirski , Linus Torvalds , Peter Feiner , linuxppc-dev@lists.ozlabs.org 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. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org