From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754052Ab3GTNCc (ORCPT ); Sat, 20 Jul 2013 09:02:32 -0400 Received: from e28smtp07.in.ibm.com ([122.248.162.7]:44842 "EHLO e28smtp07.in.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753695Ab3GTNCa (ORCPT ); Sat, 20 Jul 2013 09:02:30 -0400 Message-ID: <51EA8C23.5070408@linux.vnet.ibm.com> Date: Sat, 20 Jul 2013 18:39:55 +0530 From: Raghavendra K T Organization: IBM User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:16.0) Gecko/20121029 Thunderbird/16.0.2 MIME-Version: 1.0 To: Dave Hansen CC: Raghavendra KT , linux-kernel@vger.kernel.org, x86@kernel.org, linux-mm@kvack.org Subject: Re: [RESEND][PATCH] mm: vmstats: tlb flush counters References: <20130716234438.C792C316@viggo.jf.intel.com> <51E95932.5030902@sr71.net> In-Reply-To: <51E95932.5030902@sr71.net> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-TM-AS-MML: No X-Content-Scanned: Fidelis XPS MAILER x-cbid: 13072012-8878-0000-0000-0000080A0156 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 07/19/2013 08:50 PM, Dave Hansen wrote: > On 07/19/2013 04:38 AM, Raghavendra KT wrote: >> While measuring non - PLE performance, one of the bottleneck, I am seeing is >> flush tlbs. >> perf had helped in alaysing a bit there, but this patch would help >> in precise calculation. It will aslo help in tuning the PLE window >> experiments (larger PLE window >> would affect remote flush TLBs) > > Interesting. What workload is that? I've been having problems finding > workloads that are too consumed with TLB flushes. > Dave, ebizzy is the one. and dbench to some small extent. [root@codeblue ~]# cat /proc/vmstat |grep nr_tlb ; /root/data/script/do_ebizzy.sh; cat /proc/vmstat |grep nr_tlb nr_tlb_remote_flush 721 nr_tlb_remote_flush_received 923 nr_tlb_local_flush_all 13992 nr_tlb_local_flush_one 0 nr_tlb_local_flush_one_kernel 0 7482 records/s real 120.00 s user 86.69 s sys 3746.57 s nr_tlb_remote_flush 912896 nr_tlb_remote_flush_received 28261974 nr_tlb_local_flush_all 926272 nr_tlb_local_flush_one 0 nr_tlb_local_flush_one_kernel 0