From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.3 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,USER_AGENT_MUTT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id BA8FBECDFB3 for ; Mon, 16 Jul 2018 15:38:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 802F3208C3 for ; Mon, 16 Jul 2018 15:38:03 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 802F3208C3 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731618AbeGPQF7 (ORCPT ); Mon, 16 Jul 2018 12:05:59 -0400 Received: from mga05.intel.com ([192.55.52.43]:4767 "EHLO mga05.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729612AbeGPQF7 (ORCPT ); Mon, 16 Jul 2018 12:05:59 -0400 X-Amp-Result: UNKNOWN X-Amp-Original-Verdict: FILE UNKNOWN X-Amp-File-Uploaded: False Received: from orsmga003.jf.intel.com ([10.7.209.27]) by fmsmga105.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 16 Jul 2018 08:38:01 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.51,361,1526367600"; d="scan'208";a="67348489" Received: from tassilo.jf.intel.com (HELO tassilo.localdomain) ([10.7.201.126]) by orsmga003.jf.intel.com with ESMTP; 16 Jul 2018 08:37:47 -0700 Received: by tassilo.localdomain (Postfix, from userid 1000) id 2143A300B4B; Mon, 16 Jul 2018 08:37:47 -0700 (PDT) Date: Mon, 16 Jul 2018 08:37:47 -0700 From: Andi Kleen To: Juan Cc: peterz@infradead.org, mingo@redhat.com, acme@kernel.org, jolsa@redhat.com, alexander.shishkin@linux.intel.com, namhyung@kernel.org, linux-kernel@vger.kernel.org Subject: Re: Perf JSON events mismatch with Intel SDM Message-ID: <20180716153747.GC25412@tassilo.jf.intel.com> References: <20180716035908.GA25412@tassilo.jf.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: User-Agent: Mutt/1.9.2 (2017-12-15) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > The semantic difference being, as far as I can tell, that the "GT" > counters do not sample randomly, but will rather offer a precise count of > loads meeting the stated condition.  It's all the same underlying hardware event. The only difference is what threshold is used for filtering the loads. -Andi