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=-8.2 required=3.0 tests=BAYES_00,DKIM_ADSP_CUSTOM_MED, FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM,FREEMAIL_REPLYTO_END_DIGIT, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 D26C6C5517A for ; Fri, 30 Oct 2020 18:53:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 961D420797 for ; Fri, 30 Oct 2020 18:53:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727433AbgJ3Sxl (ORCPT ); Fri, 30 Oct 2020 14:53:41 -0400 Received: from mga12.intel.com ([192.55.52.136]:35272 "EHLO mga12.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727550AbgJ3Sw6 (ORCPT ); Fri, 30 Oct 2020 14:52:58 -0400 IronPort-SDR: kXLnUGdHmdEQXlj3f2y9pYx9pkydLjewyak9s+ke8k1Qk5mxuOlfGyjXyhZowtFdMCJogRx7EK thZoVi6NAFig== X-IronPort-AV: E=McAfee;i="6000,8403,9790"; a="147937037" X-IronPort-AV: E=Sophos;i="5.77,434,1596524400"; d="scan'208";a="147937037" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 30 Oct 2020 11:52:58 -0700 IronPort-SDR: SZlwGUN8hgrMDuMLC9YXhr9ynFTgZtBuh/H92ahRRdpGQMHtzekUMCPES5jsQi0zlAfQsVVsjF z0MmaRWJz70Q== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.77,434,1596524400"; d="scan'208";a="361933781" Received: from linux.intel.com ([10.54.29.200]) by FMSMGA003.fm.intel.com with ESMTP; 30 Oct 2020 11:52:58 -0700 Received: from abityuts-desk1.fi.intel.com (abityuts-desk1.fi.intel.com [10.237.72.186]) by linux.intel.com (Postfix) with ESMTP id 44BF15807B4; Fri, 30 Oct 2020 11:52:57 -0700 (PDT) Message-ID: Subject: wult: tool for measuring C-state latency From: Artem Bityutskiy Reply-To: dedekind1@gmail.com To: Linux PM Mailing List Cc: Pratik Rajesh Sampat Date: Fri, 30 Oct 2020 20:52:56 +0200 Content-Type: text/plain; charset="UTF-8" User-Agent: Evolution 3.32.5 (3.32.5-1.fc30) MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org Hi, I've finally published wult on github. This is a tool for measuring C- state latency. We use in on x68 platforms. It does not support non-x86 today. I talked about this tool last year on Plumbers. You'll find the video recording link in the documentation web pages. Wult comes with kernel drivers, but they are not ready to be submitted upstream yet, so out of tree for now. Repo: https://github.com/intel/wult Docs: https://intel.github.io/wult/ Just FYI, in case it is useful. Feedback very welcome, thanks! Artem.