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 35B8EC433FE for ; Fri, 30 Sep 2022 03:25:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230123AbiI3DZy (ORCPT ); Thu, 29 Sep 2022 23:25:54 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35582 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230113AbiI3DZJ (ORCPT ); Thu, 29 Sep 2022 23:25:09 -0400 Received: from mail-wr1-x432.google.com (mail-wr1-x432.google.com [IPv6:2a00:1450:4864:20::432]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DC03CC14B4 for ; Thu, 29 Sep 2022 20:24:02 -0700 (PDT) Received: by mail-wr1-x432.google.com with SMTP id x15so4369013wrv.1 for ; Thu, 29 Sep 2022 20:24:02 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=content-transfer-encoding:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:from:to:cc:subject:date; bh=KwtIAg7HwJ1rqqT+DnWl1VJ0hVA7c6T9lqyTYBLhets=; b=dnYVUdyV/UOJ+rvdo9lF+LmpB88wHEkW45PqT3a3eaHJwMU8paQRnrD1/o/htiX04y YohPdITF9BknKL9HidQDvJze6bd3Y3WzCP6Hj1KOdO0ZpbhNbBDjpZp/Vo4IAozImaXy l6i7kVBf4JBtjUwdrB7GO+GSFqolxELWQYIIMSFL2QhHhiav80UEsZa6Xz55oGwvabfZ 0wWE53Xi8MgBYnvAvxlWA71NUX6w4YUUTtn8GGe64yITUvPEoZ70WqR/G0DSEmfNh6Wf CPCoOv2IPVywyqMz5EfwwVm3gFUyX8yEkXPdjqKFoBQzQ3Rpri1tUGDGzKjg6cx8PuV2 ommQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:x-gm-message-state:from:to:cc :subject:date; bh=KwtIAg7HwJ1rqqT+DnWl1VJ0hVA7c6T9lqyTYBLhets=; b=mtgMR63Y9Msq7toAm32cfiPUlEoJDo/EhyR5GLnPnLFljThqDxasBZ0dIcxIi3FDQM 1ZaHayNBCZKDY9Z1XBQ8flrjQZmVdOGkugrN52i81rqzGIazf6195oX3k0lqln6G0QS2 DmLJI2KgfVrM3wm7SNk3Smn4SLq2o/NxSKBiwi9JNUm2U3w8WlA7qJcqCkGxan8Pmejv lXnDemmMa3dbmSQ0KGqbztk6uOlJ8YJmwjgg/bH+0rik0HG0cPK4PVN2v9gsoTeAJhTD Fj3p+KHm+FcXuTTS8C+b9CEtTMd/P4dHD/7x0kuTt+HIHfOl+S0FbcJZektIBYXMVFho 6d8Q== X-Gm-Message-State: ACrzQf1+jZ7M9pCJjNq55RfEZT7zNSPueUW+78gMiiEXuqS8kHu1kSKJ mFPtIIj2NFzMg+n661+Ci9xgrbaMCrlhTGXfaLNj2Q== X-Google-Smtp-Source: AMsMyM7XEtx+FTqXF6CXEzSTaxkaOHy1r/Gq/4I5ZCTlj+nvpKG7RLXTzZSSUlvdKx3n4BuDfdhITiiozf4JgGkalao= X-Received: by 2002:adf:dd8f:0:b0:22a:84ab:4be3 with SMTP id x15-20020adfdd8f000000b0022a84ab4be3mr4215261wrl.40.1664508237708; Thu, 29 Sep 2022 20:23:57 -0700 (PDT) MIME-Version: 1.0 References: <76CB17D0-5A66-4D49-A389-8F40EC830DC0@sladewatkins.net> In-Reply-To: <76CB17D0-5A66-4D49-A389-8F40EC830DC0@sladewatkins.net> From: Ian Rogers Date: Thu, 29 Sep 2022 20:23:45 -0700 Message-ID: Subject: Re: Invalid event (cycles:pp) in per-thread mode, enable system wide with '-a'. To: Slade Watkins , Ravi Bangoria Cc: Nick Desaulniers , linux-perf-users@vger.kernel.org, LKML Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Sep 29, 2022 at 3:10 PM Slade Watkins wrote: > > Hey Nick, > > > On Sep 29, 2022, at 5:54 PM, Nick Desaulniers = wrote: > > > > I remember hearing rumblings about issues with zen 2, LBR, vs zen 3. > > Is this a known issue, or am I holding it wrong? > > Hm=E2=80=A6 I also remember this. I have a Zen 2 based system that I can = do testing on, so I will do so when I=E2=80=99m able. > > If I discover something of note, I=E2=80=99ll get back to you. > > Cheers, > -srw > LBR isn't yet supported for Zen but is coming: https://lore.kernel.org/lkml/166155216401.401.5809694678609694438.tip-bot2@= tip-bot2/ I'd recommend frame-pointers. +Ravi who may be able to say if there are any issues with the precise sampling on AMD. Thanks, Ian