From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 48636308F38; Tue, 9 Sep 2025 10:14:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.140.110.172 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1757412842; cv=none; b=FbfXqG/+71R31BlBhFg4syJBPsfaebx5oTOGu6MDwv4o3HpahzUp9hs6yg8Omcfb92rUFWD03YlRoaaamF45CMMBbTmPNLtGIoBIKqbS4WCrBTr+VvCFvEYlWHEpRAv+kH7wbmWCJ7f8J8iBfZQZ3rG0fSiPqghYP0ET5PDHfXc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1757412842; c=relaxed/simple; bh=rDOvX1jXD3xLt+87NPZeuOJJsiKulXU/pJNwH4i3Ol8=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=KoD1MuHCKb0qY0Q6fsM/tRMCakj/UQ0ITg4C6uALvdvEvhjkRCgH1+eapHmBjZVE0WyFXInMqKBxTBsMAdPryZmofKdtW0a3PZiXT/pn53PCCqw9t7X6N8TJ0MDTIKLYtm/kz99md8fwY4PWjdPQT1mitTTLwZHK01LPUy1Sffs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com; spf=pass smtp.mailfrom=arm.com; arc=none smtp.client-ip=217.140.110.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=arm.com Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 11D11113E; Tue, 9 Sep 2025 03:13:51 -0700 (PDT) Received: from localhost (e132581.arm.com [10.1.196.87]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 101DC3F66E; Tue, 9 Sep 2025 03:13:59 -0700 (PDT) Date: Tue, 9 Sep 2025 11:13:57 +0100 From: Leo Yan To: James Clark Cc: John Garry , Will Deacon , Mike Leach , Leo Yan , Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Namhyung Kim , Mark Rutland , Alexander Shishkin , Jiri Olsa , Ian Rogers , Adrian Hunter , George Wort , Graham Woodward , Ben Gainey , Michael Williams , linux-arm-kernel@lists.infradead.org, linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 0/4] perf arm-spe: Improve --itrace options Message-ID: <20250909101357.GB12516@e132581.arm.com> References: <20250908-james-perf-spe-period-v1-0-7ccd805af461@linaro.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250908-james-perf-spe-period-v1-0-7ccd805af461@linaro.org> On Mon, Sep 08, 2025 at 01:10:17PM +0100, James Clark wrote: > Most people also want all the SPE samples (instructions group), not just > the flagged samples that are put into the various memory groups. These > should have been shown by default but weren't because the default > interval type wasn't supported. > > Also when looking at this, it appears that the downsampling was behaving > in a way that would discard samples from one group but not another. > Improve that and the warning messages. > > I don't want to put fixes tags on these because it's only changing the > defaults and the behavior, but I don't think the previous behavior was > incorrect necessarily, just copied from tracing techs but not ideal for > SPE. > > Signed-off-by: James Clark I ran the commands below, and the results are good for me. ./perf report ./perf report --itrace=i100i ./perf report --itrace=i100iM ./perf report --itrace=i100ib ./perf report --itrace=i100ibM Tested-by: Leo Yan