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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT 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 D2DCAC3A59F for ; Tue, 27 Aug 2019 01:37:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A5DF72186A for ; Tue, 27 Aug 2019 01:37:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1566869829; bh=+fJVP/ciPxlvT0JnnPLcOdqYsZvt3m5E7HedU6H9qJg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=CSaEC9oob+hbWQ2Z7cb05h9qd0Yg5g+JTh7IlYWg8C8tCJ+ii5mUb95J5IOL0Qf2c jpx2id27iBO5oDB7KL3VnQ2ZW+8YVXI5PAEIeCdx/9absVGEi9ZBnadHJF+TV9CRe8 Jd89GVtkJzwq/27mJrkEhEYVA/WkWqttJFKs88dU= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728811AbfH0BhH (ORCPT ); Mon, 26 Aug 2019 21:37:07 -0400 Received: from mail.kernel.org ([198.145.29.99]:50238 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728783AbfH0BhE (ORCPT ); Mon, 26 Aug 2019 21:37:04 -0400 Received: from quaco.ghostprotocols.net (unknown [179.97.35.50]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 70356217F5; Tue, 27 Aug 2019 01:37:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1566869823; bh=+fJVP/ciPxlvT0JnnPLcOdqYsZvt3m5E7HedU6H9qJg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=MQPP5AaXhdJYkVJgLHLh2kNntzHlv5L07Rxh2Zs/qWDoR2/sfzEBCLq03jr+ndjHB ahSQaCkpu+tRJ1BrdNw/lt7K2ACBgFqCpGYUo/ia4cfKomHWXyPGPIso2bDZxMRARM LSiRd62cDOZbNv3ZkLh1r41oEDMrdGmtKrghDLdU= From: Arnaldo Carvalho de Melo To: Ingo Molnar , Thomas Gleixner Cc: Jiri Olsa , Namhyung Kim , Clark Williams , linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, James Clark , James Clark , Alexander Shishkin , Alexey Budankov , Jeremy Linton , Jiri Olsa , Peter Zijlstra , Arnaldo Carvalho de Melo Subject: [PATCH 07/33] perf tests: Fixes hang in zstd compression test by changing the source of random data Date: Mon, 26 Aug 2019 22:36:08 -0300 Message-Id: <20190827013634.3173-8-acme@kernel.org> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190827013634.3173-1-acme@kernel.org> References: <20190827013634.3173-1-acme@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: James Clark Running 'perf test' with zstd compression linked will hang at the test 'Zstd perf.data compression/decompression' because /dev/random blocks reads until there is enough entropy. This means that the test will appear to never complete unless the mouse is continually moved while running it. Signed-off-by: James Clark Cc: Alexander Shishkin Cc: Alexey Budankov Cc: Jeremy Linton Cc: Jiri Olsa Cc: Namhyung Kim Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/3d8cc701-df4e-f949-1715-5118b530e990@arm.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/tests/shell/record+zstd_comp_decomp.sh | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/perf/tests/shell/record+zstd_comp_decomp.sh b/tools/perf/tests/shell/record+zstd_comp_decomp.sh index 899604d17b85..63a91ec473bb 100755 --- a/tools/perf/tests/shell/record+zstd_comp_decomp.sh +++ b/tools/perf/tests/shell/record+zstd_comp_decomp.sh @@ -13,7 +13,7 @@ skip_if_no_z_record() { collect_z_record() { echo "Collecting compressed record file:" $perf_tool record -o $trace_file -g -z -F 5000 -- \ - dd count=500 if=/dev/random of=/dev/null + dd count=500 if=/dev/urandom of=/dev/null } check_compressed_stats() { -- 2.21.0