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=-14.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,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 1AD61C43214 for ; Fri, 27 Aug 2021 23:13:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E5F3860FC4 for ; Fri, 27 Aug 2021 23:13:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232252AbhH0XOF (ORCPT ); Fri, 27 Aug 2021 19:14:05 -0400 Received: from mx0b-00082601.pphosted.com ([67.231.153.30]:18672 "EHLO mx0a-00082601.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S232392AbhH0XOF (ORCPT ); Fri, 27 Aug 2021 19:14:05 -0400 Received: from pps.filterd (m0001303.ppops.net [127.0.0.1]) by m0001303.ppops.net (8.16.0.43/8.16.0.43) with SMTP id 17RN8sKA013985 for ; Fri, 27 Aug 2021 16:13:15 -0700 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=fb.com; h=from : to : cc : subject : date : message-id : mime-version : content-transfer-encoding : content-type; s=facebook; bh=8aj5pTvvkTqBwH+sZwrilAXQT4LsEGNEwGm6/PhWkuk=; b=Ch38oO6sNduqb1rMio2iet+9/HBH0e/10jQL8hSC/+wGBBOYI7b5VLFPWGcCNK9wb59T EOJk/7yoLcwHycU3amyyBnVqyLXf8XHNxClGrj7B2/MMo4SL+TnMF+Mjx9xkUpGbzOSh NIuR6rMpIp03jlAEprCvJQx06/6FM0ajcLc= Received: from maileast.thefacebook.com ([163.114.130.16]) by m0001303.ppops.net with ESMTP id 3apmvtq4vc-5 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT) for ; Fri, 27 Aug 2021 16:13:15 -0700 Received: from intmgw002.48.prn1.facebook.com (2620:10d:c0a8:1b::d) by mail.thefacebook.com (2620:10d:c0a8:82::f) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2176.14; Fri, 27 Aug 2021 16:13:14 -0700 Received: by devvm2661.vll0.facebook.com (Postfix, from userid 200310) id 271752B99AFB; Fri, 27 Aug 2021 16:13:08 -0700 (PDT) From: Yucong Sun To: CC: , , Yucong Sun Subject: [RFC 0/1] add parallelism to test_progs Date: Fri, 27 Aug 2021 16:13:06 -0700 Message-ID: <20210827231307.3787723-1-fallentree@fb.com> X-Mailer: git-send-email 2.30.2 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-FB-Internal: Safe Content-Type: text/plain X-FB-Source: Intern X-Proofpoint-ORIG-GUID: vT5sXKLGn2FWDKJdKDR4AEj37liYarw1 X-Proofpoint-GUID: vT5sXKLGn2FWDKJdKDR4AEj37liYarw1 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.391,18.0.790 definitions=2021-08-27_07:2021-08-27,2021-08-27 signatures=0 X-Proofpoint-Spam-Details: rule=fb_default_notspam policy=fb_default score=0 adultscore=0 phishscore=0 clxscore=1015 mlxlogscore=482 malwarescore=0 spamscore=0 bulkscore=0 impostorscore=0 lowpriorityscore=0 mlxscore=0 priorityscore=1501 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2107140000 definitions=main-2108270138 X-FB-Internal: deliver Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org This patch added a optional "-p" to test_progs to run tests in multiple process, speeding up the tests. Example: time ./test_progs real 5m51.393s user 0m4.695s sys 5m48.055s time ./test_progs -p 16 (on a 8 core vm) real 3m45.673s user 0m4.434s sys 5m47.465s The feedback area I'm looking for : 1.Some tests are taking too long to run (for example: bpf_verif_scale/pyperf* takes almost 80% of the total runtime). If we need a work-stealing pool mechanism it would be a bigger change. 2. The tests output from workers are currently interleaved from all workers, making it harder to read, one option would be redirect all outputs onto pipes and have main process collect and print in sequence for each worker finish, but that will make seeing real time progress harder. 3. If main process want to collect tests results from worker, I plan to have each worker writes a stats file to /tmp, or I can use IPC, any preference? 4. Some tests would fail if run in parallel, I think we would need to pin some tasks onto worker 0. Yucong Sun (1): selftests/bpf: Add parallelism to test_progs tools/testing/selftests/bpf/test_progs.c | 94 ++++++++++++++++++++++-- tools/testing/selftests/bpf/test_progs.h | 3 + 2 files changed, 91 insertions(+), 6 deletions(-) --=20 2.30.2