From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3D9632A1C9; Sat, 27 Jan 2024 19:46:59 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706384820; cv=none; b=A/msNkDANBUPEzkSJN75JDrePT18NDHOiFOf3C/eeov+/7qqOdFD3PXFi6X6cstjmMC2TRXPufw0a4S4mJwzIm6AXTc5seCrCqycH19e1pWUdT4o72s3aWtB+fn86t2JXLT4uHUeVH4vH637cwjFTrruJynj3G37HQEIcCsv66g= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706384820; c=relaxed/simple; bh=9wu/rXDEi0M+UJTHlnsY5RuZUwgSUdzZITIxuYPhs7A=; h=Date:From:To:Cc:Subject:Message-ID:MIME-Version:Content-Type: Content-Disposition; b=DUsw1wdHpfUnIW6Hp53Nc8F4Acl943Ayg9D+8mXUICr8dbSXZIdZUDSQRSbmH++uOsKSS4j2oSt6poM/VU8T5Y0uhHrvc35nNIbL3V1G1nPcQ7cVxRPXjg9s9gyoRaUqTB335FlGMQAXCxSLndpdWUGmRJm2wqFcKSjehbFuIGk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=AGCDGmW4; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="AGCDGmW4" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 92791C433F1; Sat, 27 Jan 2024 19:46:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1706384819; bh=9wu/rXDEi0M+UJTHlnsY5RuZUwgSUdzZITIxuYPhs7A=; h=Date:From:To:Cc:Subject:From; b=AGCDGmW4dyGZ7bY47P5RPoOutHDW6imACdiY+XOeSzi8lvzVSRZvf3eXSgvxKq3IA KwHp9A2uj2lxxLBBKKjBXNfBwWuQoUJ4TCK8iqDWKVt3uKJErm7FQmdfZ1su3eZqcL p6AAvR40FTcKmiV6fH4BQf0yJe0rQdAT5AkjO5DFS5j7Ve2C/wVaAJAR4GBoWDwUq3 /J98xRQMe1zLyncr9fddteTDvNbHW47fnNHJI07Vzb/yR9euH80tAW8w9D1Yp/TsVI KwSAxoWvJ+BMUtYdkSxs/rKMADfjUWP+EV5rtThuyr24KgdNh/JVEK0ambzYG/0wPR BXDZMRyddCyPA== Received: by quaco.ghostprotocols.net (Postfix, from userid 1000) id 5017240441; Sat, 27 Jan 2024 16:46:57 -0300 (-03) Date: Sat, 27 Jan 2024 16:46:57 -0300 From: Arnaldo Carvalho de Melo To: Namhyung Kim Cc: Adrian Hunter , Ian Rogers , Jiri Olsa , Linux Kernel Mailing List , linux-perf-users@vger.kernel.org Subject: perf test bpf-counters failing on some hybrid machines Message-ID: Precedence: bulk X-Mailing-List: linux-perf-users@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline X-Url: http://acmel.wordpress.com IIRC there is a patch by Thomas Richter for s390 for this? I'll check Fails: root@number:~# uname -a Linux number 6.6.13-200.fc39.x86_64 #1 SMP PREEMPT_DYNAMIC Sat Jan 20 18:03:28 UTC 2024 x86_64 GNU/Linux root@number:~# root@number:~# perf test -v 106 106: perf stat --bpf-counters test : --- start --- test child forked, pid 997337 The difference between 292281328 and 383336121 are greater than 10%. test child finished with -1 ---- end ---- perf stat --bpf-counters test: FAILED! root@number:~# grep -m1 "model name" /proc/cpuinfo model name : Intel(R) Core(TM) i7-14700K root@number:~# Fails sometimes: root@x1:~# uname -a Linux x1 6.6.13-200.fc39.x86_64 #1 SMP PREEMPT_DYNAMIC Sat Jan 20 18:03:28 UTC 2024 x86_64 GNU/Linux root@x1:~# perf test 106 106: perf stat --bpf-counters test : Ok root@x1:~# grep -m1 "model name" /proc/cpuinfo model name : 13th Gen Intel(R) Core(TM) i7-1365U root@x1:~# perf test 106 106: perf stat --bpf-counters test : Ok root@x1:~# perf test 106 106: perf stat --bpf-counters test : Ok root@x1:~# perf test 106 106: perf stat --bpf-counters test : Ok root@x1:~# perf test 106 106: perf stat --bpf-counters test : Ok root@x1:~# perf test 106 106: perf stat --bpf-counters test : Ok root@x1:~# perf test 106 106: perf stat --bpf-counters test : Ok root@x1:~# perf test 106 106: perf stat --bpf-counters test : FAILED! root@x1:~# perf test 106 106: perf stat --bpf-counters test : Ok root@x1:~# perf test 106 106: perf stat --bpf-counters test : FAILED! root@x1:~# perf test 106 106: perf stat --bpf-counters test : Ok root@x1:~# perf test 106 106: perf stat --bpf-counters test : Ok root@x1:~# perf test 106 106: perf stat --bpf-counters test : Ok root@x1:~# perf test -v 106 106: perf stat --bpf-counters test : --- start --- test child forked, pid 279934 test child finished with 0 ---- end ---- perf stat --bpf-counters test: Ok root@x1:~# perf test -v 106 106: perf stat --bpf-counters test : --- start --- test child forked, pid 280029 The difference between 261175698 and 219929411 are greater than 10%. test child finished with -1 ---- end ---- perf stat --bpf-counters test: FAILED! root@x1:~# perf test -v 106 106: perf stat --bpf-counters test : --- start --- test child forked, pid 280124 The difference between 251455173 and 299125735 are greater than 10%. test child finished with -1 ---- end ---- perf stat --bpf-counters test: FAILED! root@x1:~# - Arnaldo