From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on dcvr.yhbt.net X-Spam-Level: X-Spam-ASN: AS31976 209.132.180.0/23 X-Spam-Status: No, score=-3.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI, SPF_HELO_NONE,SPF_NONE shortcircuit=no autolearn=ham autolearn_force=no version=3.4.2 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by dcvr.yhbt.net (Postfix) with ESMTP id 40D701F463 for ; Fri, 22 Nov 2019 16:18:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727234AbfKVQSH (ORCPT ); Fri, 22 Nov 2019 11:18:07 -0500 Received: from mout.web.de ([212.227.17.11]:47149 "EHLO mout.web.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726666AbfKVQSH (ORCPT ); Fri, 22 Nov 2019 11:18:07 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=web.de; s=dbaedf251592; t=1574439477; bh=viKxSTCtg6n29jze9YB3zuZDUlg+ai8IhV4NE/O8f6g=; h=X-UI-Sender-Class:Subject:To:Cc:References:From:Date:In-Reply-To; b=q0KNogOvO/2OAEVeC2L2R87r313cYmHtQffHkoJV7zN+onHGawErqOAG3sqZANCVr CAoTAy4syayWC1TNZ/HYqFypYGEXAjY+5TvnXsqAHkIfCG9yrh7aggs6z+IvMsHW70 15lvq2ziukVOXKz1mCldUtay6/TqqdQpTNrMAa+A= X-UI-Sender-Class: c548c8c5-30a9-4db5-a2e7-cb6cb037b8f9 Received: from [192.168.1.3] ([2.244.174.75]) by smtp.web.de (mrweb103 [213.165.67.124]) with ESMTPSA (Nemesis) id 0M5g0a-1hb0Qv2XYe-00xfRz; Fri, 22 Nov 2019 17:17:57 +0100 Subject: Re: coccinelle: improve array.cocci To: =?UTF-8?Q?G=c3=a1bor_Szeder?= Cc: =?UTF-8?Q?Ren=c3=a9_Scharfe?= , Jeff King , git@vger.kernel.org References: <5189f847-1af1-f050-6c72-576a977f6f12@web.de> <05ab1110-2115-7886-f890-9983caabc52c@web.de> <50b265f0-bcab-d0ec-a714-07e94ceaa508@web.de> <0d9cf772-268d-bd00-1cbb-0bbbec9dfc9a@web.de> <4f55b06b-35f3-da06-ae86-8a4068f78027@web.de> <06ff24b6-f154-9ec6-7b22-05b0ea664a36@web.de> <20191122152950.GZ23183@szeder.dev> From: Markus Elfring Autocrypt: addr=Markus.Elfring@web.de; 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Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.2.2 MIME-Version: 1.0 In-Reply-To: <20191122152950.GZ23183@szeder.dev> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: quoted-printable X-Provags-ID: V03:K1:uMhbtu6DvJ8FSYwTgLFoEeMdK4ki6CkbCDfAzZLxEtyCTFnaLV8 huiS6B02fVUDF3t+myJVy+KW78sh/zrwEJmU8iB3/DR12CJ9fNTjaFkvsLwuFfXTvti+YAu cV8OYMxd4N59sGWx1Si3eRLdYt5ISZqvi+HmVExMjH7Fz5PQJcYTgUwXeFy8YeRyxMIAAwk s3BTxQqYfoT9+pvlexLRw== X-UI-Out-Filterresults: notjunk:1;V03:K0:kOEn4bbFcRo=:GXUira8dUXO/QObSvobrxN jtiwN62jMtnD1pI/M+PfiinvA3o7lFrF/24BdkSZ6VHGCf4eesxaBrkL+f0WhabkvX1s0skva v3tTm4HyIwlBBxNac8x/NMuLNHqQ08qarR9nhQPLhjoHKB75NfuUYrZEZGUuE/aDhIkIRpOM3 EorA1/oIvy/TazP0/pH4TV3MnLua3jq6l9qM4VlGlJbp8Q0rVnuU5DCKDN8JRotPKiYlz7omD 8cFf6n62Stg30qYWCrtbeFUQZJ6DztUJr8MtjpwEAEVClXKk4Xb13kcRE9uYbbuNZKT4UINIw DpgYTd3T5tEO3GzAqlz5gPgXi2q9ISdsBmFAxd27qrvfU3vbGk5Qkb3POoE/5bAn9PQTdLUzf Hh1xyRiBMpayAmkf+UvuowkcbWB+az8Hs7Z3aV/ul4zPcm6SLwEF2DHRWddHUZnWCXZFrQpn/ PyHfV+Q74n5u/CBzr4qSgvOmSAwEsMKw0emMZCoICjbcXewmvKSJV0t6oSFCV869ZYODGzr/4 M9VJGfF9bmG2bdX1jCuQsMf1MwMU3TAJ9i5R9yGg3kG/HvfPmkBmybljosZZThxFuhQz66NAj MVloPaVY8fWeAJQnqHgO1kSKdkZjC9KgEuckeTAxzZ62Msj5YHWNv+GgLPcpmQIIgowouF2eo iVDlpd4kX0pV9SnTZ2ViGDd4/8iwe/N/dpRmssrW9xb82472DmriXy8YNvvePYoNNKY6hR1CA uoCoP2D7hqDVflV3RpjEOlud0QHd0bKCAJVhYhmvhHw8HSfaeLnejUXvMbEsHKblw4Uv3EuPM kVcXic+/8hdsn42EfHYWu4jNgrGGOQX0mTMK0LMPXUjkJFbsuQphUzp6mV8Op5daZiuHJQuIr 0roTXwvpO1hdsVsMX2ORRi/v2zWieknPJ3Jt0QZHwQfImy6649UIQqDrFJvlMFg/sGueyTHEK NSJTO7dZ3qUp6NAI5v1kHUIWXFOJIlu6R+CYkmowuoedphtVFK/JFWZLpTeC/n5dWn/TQcXdc wOX2+w/VGGLHOibGiBgm+Ocm/izgHWL6MtuKTAAtFWhyhUmTTO/iDMZO6IyP/Q7TrmF8H8kBL WLaKjfVTXVf0OkYUUkqRA8aqI2oHftR2/lB4kjb4Sc9bSw+RfNo0j69spEaCcysewgE43ArwU tm7K+58T/1tbgmhJot63IX7WZZHIGJvD7xTMM7OevmrOYmBw6g5WJgE21UZt0RsQjDNfGmC0j 8WQu9e3mLP4Q96m1qia0zaX7LGX23G2SF9Soowqt7dV3qBT9g+d9VQLZvr3s= Sender: git-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: git@vger.kernel.org > I did try --jobs on a couple of occasions, Thanks for your feedback. > and the results always varied between broken, not working, The parallelisation support by the Coccinelle software was questionable for a while. > or downright making things even slower. I wonder about this information. =E2=80=A6 > spatch version 1.0.4 with Python support and with PCRE support =E2=80=A6 > Fatal error: exception Sys_error("array: No such file or directory") Another bit of background information: * https://lore.kernel.org/cocci/99082e9d-8047-eee3-68dd-9849868d4a96@users= .sourceforge.net/ https://systeme.lip6.fr/pipermail/cocci/2016-August/003546.html * https://lore.kernel.org/cocci/alpine.DEB.2.10.1506171707190.2578@hadrien= / https://systeme.lip6.fr/pipermail/cocci/2015-June/002141.html =E2=80=A6 > Therefore, merely passing in '--jobs ' doesn't bring any runtime bene= fits: This program parameter should be used for other command variants. =E2=80=A6 > It appears that batching 'spatch' invocations with 1.0.8 does not > bring the same benefits as with 1.0.4, but brings slowdowns instead... Would you like to share your experiences also on the Coccinelle mailing li= st? Regards, Markus