From mboxrd@z Thu Jan 1 00:00:00 1970 From: Peter Zijlstra Subject: Re: [PATCH v2 0/5] Add NUMA-awareness to qspinlock Date: Mon, 1 Apr 2019 11:09:43 +0200 Message-ID: <20190401090943.GG11158@hirez.programming.kicks-ass.net> References: <20190329152006.110370-1-alex.kogan@oracle.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Content-Disposition: inline In-Reply-To: <20190329152006.110370-1-alex.kogan@oracle.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=m.gmane.org@lists.infradead.org To: Alex Kogan Cc: linux-arch@vger.kernel.org, arnd@arndb.de, dave.dice@oracle.com, x86@kernel.org, will.deacon@arm.com, linux@armlinux.org.uk, steven.sistare@oracle.com, linux-kernel@vger.kernel.org, rahul.x.yadav@oracle.com, mingo@redhat.com, bp@alien8.de, hpa@zytor.com, longman@redhat.com, tglx@linutronix.de, daniel.m.jordan@oracle.com, linux-arm-kernel@lists.infradead.org List-Id: linux-arch.vger.kernel.org On Fri, Mar 29, 2019 at 11:20:01AM -0400, Alex Kogan wrote: > The following locktorture results are from an Oracle X5-4 server > (four Intel Xeon E7-8895 v3 @ 2.60GHz sockets with 18 hyperthreaded > cores each). The other interesting number is on a !NUMA machine. What do these patches do there? Remember, most people do not in fact have numa. From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from bombadil.infradead.org ([198.137.202.133]:48072 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725820AbfDAJJx (ORCPT ); Mon, 1 Apr 2019 05:09:53 -0400 Date: Mon, 1 Apr 2019 11:09:43 +0200 From: Peter Zijlstra Subject: Re: [PATCH v2 0/5] Add NUMA-awareness to qspinlock Message-ID: <20190401090943.GG11158@hirez.programming.kicks-ass.net> References: <20190329152006.110370-1-alex.kogan@oracle.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190329152006.110370-1-alex.kogan@oracle.com> Sender: linux-arch-owner@vger.kernel.org List-ID: To: Alex Kogan Cc: linux@armlinux.org.uk, mingo@redhat.com, will.deacon@arm.com, arnd@arndb.de, longman@redhat.com, linux-arch@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, tglx@linutronix.de, bp@alien8.de, hpa@zytor.com, x86@kernel.org, steven.sistare@oracle.com, daniel.m.jordan@oracle.com, dave.dice@oracle.com, rahul.x.yadav@oracle.com Message-ID: <20190401090943.BQTUsQfHTPMZbQU4d-ZNXnW2Se3GTmj-EgeFs-RtNis@z> On Fri, Mar 29, 2019 at 11:20:01AM -0400, Alex Kogan wrote: > The following locktorture results are from an Oracle X5-4 server > (four Intel Xeon E7-8895 v3 @ 2.60GHz sockets with 18 hyperthreaded > cores each). The other interesting number is on a !NUMA machine. What do these patches do there? Remember, most people do not in fact have numa.