From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751595Ab3BGGNo (ORCPT ); Thu, 7 Feb 2013 01:13:44 -0500 Received: from e28smtp07.in.ibm.com ([122.248.162.7]:46291 "EHLO e28smtp07.in.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750823Ab3BGGNl (ORCPT ); Thu, 7 Feb 2013 01:13:41 -0500 Message-ID: <51134596.4080106@linux.vnet.ibm.com> Date: Thu, 07 Feb 2013 11:41:34 +0530 From: "Srivatsa S. Bhat" User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:15.0) Gecko/20120828 Thunderbird/15.0 MIME-Version: 1.0 To: Rusty Russell CC: tglx@linutronix.de, peterz@infradead.org, tj@kernel.org, oleg@redhat.com, paulmck@linux.vnet.ibm.com, mingo@kernel.org, linux-arch@vger.kernel.org, linux@arm.linux.org.uk, nikunj@linux.vnet.ibm.com, linux-pm@vger.kernel.org, fweisbec@gmail.com, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, rostedt@goodmis.org, xiaoguangrong@linux.vnet.ibm.com, rjw@sisk.pl, sbw@mit.edu, wangyun@linux.vnet.ibm.com, netdev@vger.kernel.org, namhyung@kernel.org, akpm@linux-foundation.org, walken@google.com, linuxppc-dev@lists.ozlabs.org, linux-arm-kernel@lists.infradead.org Subject: Re: [PATCH v5 00/45] CPU hotplug: stop_machine()-free CPU hotplug References: <20130122073210.13822.50434.stgit@srivatsabhat.in.ibm.com> <510FBC01.2030405@linux.vnet.ibm.com> <87haloiwv0.fsf@rustcorp.com.au> In-Reply-To: <87haloiwv0.fsf@rustcorp.com.au> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-Content-Scanned: Fidelis XPS MAILER x-cbid: 13020706-8878-0000-0000-000005CF9FC7 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 02/07/2013 09:44 AM, Rusty Russell wrote: > "Srivatsa S. Bhat" writes: >> On 01/22/2013 01:03 PM, Srivatsa S. Bhat wrote: >> Avg. latency of 1 CPU offline (ms) [stop-cpu/stop-m/c latency] >> >> # online CPUs Mainline (with stop-m/c) This patchset (no stop-m/c) >> >> 8 17.04 7.73 >> >> 16 18.05 6.44 >> >> 32 17.31 7.39 >> >> 64 32.40 9.28 >> >> 128 98.23 7.35 > > Nice! Thank you :-) > I wonder how the ARM guys feel with their quad-cpu systems... > That would be definitely interesting to know :-) Regards, Srivatsa S. Bhat From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from e28smtp07.in.ibm.com (e28smtp07.in.ibm.com [122.248.162.7]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "e28smtp07.in.ibm.com", Issuer "GeoTrust SSL CA" (not verified)) by ozlabs.org (Postfix) with ESMTPS id EAE322C02CA for ; Thu, 7 Feb 2013 17:13:47 +1100 (EST) Received: from /spool/local by e28smtp07.in.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Thu, 7 Feb 2013 11:41:19 +0530 Received: from d28relay05.in.ibm.com (d28relay05.in.ibm.com [9.184.220.62]) by d28dlp03.in.ibm.com (Postfix) with ESMTP id D268E125804E for ; Thu, 7 Feb 2013 11:44:05 +0530 (IST) Received: from d28av04.in.ibm.com (d28av04.in.ibm.com [9.184.220.66]) by d28relay05.in.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id r176DQtn27394142 for ; Thu, 7 Feb 2013 11:43:27 +0530 Received: from d28av04.in.ibm.com (loopback [127.0.0.1]) by d28av04.in.ibm.com (8.14.4/8.13.1/NCO v10.0 AVout) with ESMTP id r176DQgg003051 for ; Thu, 7 Feb 2013 17:13:28 +1100 Message-ID: <51134596.4080106@linux.vnet.ibm.com> Date: Thu, 07 Feb 2013 11:41:34 +0530 From: "Srivatsa S. Bhat" MIME-Version: 1.0 To: Rusty Russell Subject: Re: [PATCH v5 00/45] CPU hotplug: stop_machine()-free CPU hotplug References: <20130122073210.13822.50434.stgit@srivatsabhat.in.ibm.com> <510FBC01.2030405@linux.vnet.ibm.com> <87haloiwv0.fsf@rustcorp.com.au> In-Reply-To: <87haloiwv0.fsf@rustcorp.com.au> Content-Type: text/plain; charset=ISO-8859-1 Cc: linux-doc@vger.kernel.org, peterz@infradead.org, fweisbec@gmail.com, linux-kernel@vger.kernel.org, walken@google.com, mingo@kernel.org, linux-arch@vger.kernel.org, linux@arm.linux.org.uk, xiaoguangrong@linux.vnet.ibm.com, wangyun@linux.vnet.ibm.com, paulmck@linux.vnet.ibm.com, nikunj@linux.vnet.ibm.com, linux-pm@vger.kernel.org, rostedt@goodmis.org, rjw@sisk.pl, namhyung@kernel.org, tglx@linutronix.de, linux-arm-kernel@lists.infradead.org, netdev@vger.kernel.org, oleg@redhat.com, sbw@mit.edu, tj@kernel.org, akpm@linux-foundation.org, linuxppc-dev@lists.ozlabs.org List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On 02/07/2013 09:44 AM, Rusty Russell wrote: > "Srivatsa S. Bhat" writes: >> On 01/22/2013 01:03 PM, Srivatsa S. Bhat wrote: >> Avg. latency of 1 CPU offline (ms) [stop-cpu/stop-m/c latency] >> >> # online CPUs Mainline (with stop-m/c) This patchset (no stop-m/c) >> >> 8 17.04 7.73 >> >> 16 18.05 6.44 >> >> 32 17.31 7.39 >> >> 64 32.40 9.28 >> >> 128 98.23 7.35 > > Nice! Thank you :-) > I wonder how the ARM guys feel with their quad-cpu systems... > That would be definitely interesting to know :-) Regards, Srivatsa S. Bhat From mboxrd@z Thu Jan 1 00:00:00 1970 From: srivatsa.bhat@linux.vnet.ibm.com (Srivatsa S. Bhat) Date: Thu, 07 Feb 2013 11:41:34 +0530 Subject: [PATCH v5 00/45] CPU hotplug: stop_machine()-free CPU hotplug In-Reply-To: <87haloiwv0.fsf@rustcorp.com.au> References: <20130122073210.13822.50434.stgit@srivatsabhat.in.ibm.com> <510FBC01.2030405@linux.vnet.ibm.com> <87haloiwv0.fsf@rustcorp.com.au> Message-ID: <51134596.4080106@linux.vnet.ibm.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On 02/07/2013 09:44 AM, Rusty Russell wrote: > "Srivatsa S. Bhat" writes: >> On 01/22/2013 01:03 PM, Srivatsa S. Bhat wrote: >> Avg. latency of 1 CPU offline (ms) [stop-cpu/stop-m/c latency] >> >> # online CPUs Mainline (with stop-m/c) This patchset (no stop-m/c) >> >> 8 17.04 7.73 >> >> 16 18.05 6.44 >> >> 32 17.31 7.39 >> >> 64 32.40 9.28 >> >> 128 98.23 7.35 > > Nice! Thank you :-) > I wonder how the ARM guys feel with their quad-cpu systems... > That would be definitely interesting to know :-) Regards, Srivatsa S. Bhat