From patchwork Wed Sep 13 10:44:19 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Hunt, David" X-Patchwork-Id: 28654 X-Patchwork-Delegate: ferruh.yigit@amd.com Return-Path: X-Original-To: patchwork@dpdk.org Delivered-To: patchwork@dpdk.org Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id CEBED1B19E; Wed, 13 Sep 2017 12:47:40 +0200 (CEST) Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by dpdk.org (Postfix) with ESMTP id B49211AEF6 for ; Wed, 13 Sep 2017 12:47:35 +0200 (CEST) Received: from fmsmga004.fm.intel.com ([10.253.24.48]) by fmsmga102.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 13 Sep 2017 03:47:35 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.42,387,1500966000"; d="scan'208";a="311165230" Received: from silpixa00397898.ir.intel.com ([10.237.223.116]) by fmsmga004.fm.intel.com with ESMTP; 13 Sep 2017 03:47:34 -0700 From: David Hunt To: dev@dpdk.org Cc: David Hunt Date: Wed, 13 Sep 2017 11:44:19 +0100 Message-Id: <1505299459-24135-5-git-send-email-david.hunt@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1505299459-24135-1-git-send-email-david.hunt@intel.com> References: <1503418310-162535-2-git-send-email-david.hunt@intel.com> <1505299459-24135-1-git-send-email-david.hunt@intel.com> Subject: [dpdk-dev] [PATCH v2 4/4] doc/power: add information on per-core turbo APIs X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" Signed-off-by: David Hunt Acked-by: John McNamara Acked-by: John McNamara --- doc/guides/prog_guide/power_man.rst | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/doc/guides/prog_guide/power_man.rst b/doc/guides/prog_guide/power_man.rst index 114d0b1..c5d62a3 100644 --- a/doc/guides/prog_guide/power_man.rst +++ b/doc/guides/prog_guide/power_man.rst @@ -89,6 +89,14 @@ Core state can be altered by speculative sleeps whenever the specified lcore has In the DPDK, if no packet is received after polling, speculative sleeps can be triggered according the strategies defined by the user space application. +Per-core Turbo Boost +-------------------- + +Individual cores can be allowed to enter a Turbo Boost state on a per-core +basis. This is achieved by enabling Turbo Boost Technology in the BIOS, then +looping through the relevant cores and enabling/disabling Turbo Boost on each +core. + API Overview of the Power Library --------------------------------- @@ -108,6 +116,10 @@ The main methods exported by power library are for CPU frequency scaling and inc * **Freq set**: Prompt the kernel to set the frequency for the specific lcore. +* **Enable turbo**: Prompt the kernel to enable Turbo Boost for the specific lcore. + +* **Disable turbo**: Prompt the kernel to disable Turbo Boost for the specific lcore. + User Cases ----------