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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7E8D7C4332F for ; Fri, 14 Oct 2022 13:33:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229624AbiJNNd4 (ORCPT ); Fri, 14 Oct 2022 09:33:56 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33164 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229618AbiJNNdz (ORCPT ); Fri, 14 Oct 2022 09:33:55 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DA6AE1CD6A9; Fri, 14 Oct 2022 06:33:52 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 557EEB81CBA; Fri, 14 Oct 2022 13:33:51 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id E05D7C433D6; Fri, 14 Oct 2022 13:33:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1665754430; bh=4pqJhpYw5cLPbfAk/LnCp5v+rvER8PV3HC7X8MIf+Gc=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=TDMot0xeNN6kA3wWfXoIl5R1QRnkYpXjH740c/5rV/pqvczQIjQRWpBuzMn+gtZ4Z C/Dq4aJ2z4s+Nb3oZgYFdFHQLhhrw8+LXFpydnt8Q0fRi9vmFPXxbp3sHv+sIJ35wl Huk1+0/HNNC/kGx1hAYlRJT/2yrxfdkqJyrBkhtDtpMZT9c9UfJhSVpJVBSQpNO3Pg 8MLyD3zAt8t5Y0duya3AYIUMhGBmIoniM0g5p/2JlJXN3s18Y5/j8aD2RVkn732u57 gVcm2oxyIXMjl0UV/ypGNjwLGJV1mARw4XdiQCRC76DYxtQiulgpl7shpku1QgKXw3 Gwa7HYEJABjmQ== Received: by quaco.ghostprotocols.net (Postfix, from userid 1000) id CAE9E4062C; Fri, 14 Oct 2022 10:33:47 -0300 (-03) Date: Fri, 14 Oct 2022 10:33:47 -0300 From: Arnaldo Carvalho de Melo To: James Clark Cc: Leo Yan , coresight@lists.linaro.org, suzuki.poulose@arm.com, linux-perf-users@vger.kernel.org, mathieu.poirier@linaro.org, mike.leach@linaro.org, Peter Zijlstra , Ingo Molnar , Mark Rutland , Alexander Shishkin , Jiri Olsa , Namhyung Kim , linux-kernel@vger.kernel.org Subject: Re: [PATCH] perf test: Fix test_arm_coresight.sh failures on Juno Message-ID: References: <20221005140508.1537277-1-james.clark@arm.com> <7dcf8bc5-4182-cf73-59ec-86e113ab2c17@arm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <7dcf8bc5-4182-cf73-59ec-86e113ab2c17@arm.com> X-Url: http://acmel.wordpress.com Precedence: bulk List-ID: X-Mailing-List: linux-perf-users@vger.kernel.org Em Mon, Oct 10, 2022 at 10:21:22AM +0100, James Clark escreveu: > On 10/10/2022 08:41, Leo Yan wrote: > > On Thu, Oct 06, 2022 at 04:11:05PM +0100, James Clark wrote: > >> Error: > >> The perf.data data has no samples! > >> 0 > > Thanks for confirmation. It's a bit weird that your Juno board doesn't > > produce all zeros for timestamp packets. > >> I think the issue is that ls is quite quick to run, so not much trace is > >> generated for Perf. And it just depends on the scheduling which is > >> slightly different on Juno. I don't think it's a bug. On N1SDP there are > >> only 134 samples generated with i1000i, so it could probably end up with > >> a random run generating 0 there too. > > Agreed, changing to smaller interval makes sense for me. > > Reviewed-by: Leo Yan > Thanks for the review Leo Thanks, applied. - Arnaldo