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=-4.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,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 B23A1C43381 for ; Wed, 20 Feb 2019 14:48:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8E92921848 for ; Wed, 20 Feb 2019 14:48:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727409AbfBTOsL (ORCPT ); Wed, 20 Feb 2019 09:48:11 -0500 Received: from mga03.intel.com ([134.134.136.65]:49825 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726285AbfBTOsH (ORCPT ); Wed, 20 Feb 2019 09:48:07 -0500 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga004.jf.intel.com ([10.7.209.38]) by orsmga103.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 20 Feb 2019 06:48:07 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.58,391,1544515200"; d="scan'208";a="276493339" Received: from linux.intel.com ([10.54.29.200]) by orsmga004.jf.intel.com with ESMTP; 20 Feb 2019 06:48:07 -0800 Received: from [10.125.252.177] (abudanko-mobl.ccr.corp.intel.com [10.125.252.177]) by linux.intel.com (Postfix) with ESMTP id C99D858019B; Wed, 20 Feb 2019 06:48:04 -0800 (PST) Subject: Re: [PATCH v2 4/4] perf report: support record trace file decompression To: Jiri Olsa Cc: Arnaldo Carvalho de Melo , Ingo Molnar , Peter Zijlstra , Namhyung Kim , Alexander Shishkin , Andi Kleen , linux-kernel References: <044ee2be-2e1d-e90f-7317-40083b5e716c@linux.intel.com> <4f45c930-cf39-76b0-5c56-ee4fb0705fa3@linux.intel.com> <20190212130914.GK775@krava> From: Alexey Budankov Organization: Intel Corp. Message-ID: <92aa09eb-6679-c4d6-5d5d-2fa0cf0af8a1@linux.intel.com> Date: Wed, 20 Feb 2019 17:48:03 +0300 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.5.0 MIME-Version: 1.0 In-Reply-To: <20190212130914.GK775@krava> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 12.02.2019 16:09, Jiri Olsa wrote: > On Mon, Feb 11, 2019 at 11:25:00PM +0300, Alexey Budankov wrote: >> >> PERF_RECORD_COMPRESSED records are decompressed from trace file into >> a linked list of mmaped memory regions using streaming Zstandard API. >> After that the regions are loaded fetching uncompressed events. When >> dumping raw trace (e.g., perf report -D --header) file offsets of >> events from compressed records are set to zero. >> >> Signed-off-by: Alexey Budankov >> --- >> Changes in v2: >> - moved compression/decompression code to session layer > > could you please add some automated test for this? > > I think it could be part of the sample synthesize test > or even new script test under tests/shell.. or anything > else really.. just to see that we have some clean > interface for this that we can test This is possible. Let's complete the code review first. Thanks, Alexey > > thanks, > jirka >