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=-0.9 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS, URIBL_BLOCKED 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 2058EC6778A for ; Wed, 4 Jul 2018 00:21:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8B7D324238 for ; Wed, 4 Jul 2018 00:21:28 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=canb.auug.org.au header.i=@canb.auug.org.au header.b="fRUUkDH3" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8B7D324238 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=canb.auug.org.au Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753179AbeGDAVY (ORCPT ); Tue, 3 Jul 2018 20:21:24 -0400 Received: from ozlabs.org ([203.11.71.1]:50947 "EHLO ozlabs.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750716AbeGDAVX (ORCPT ); Tue, 3 Jul 2018 20:21:23 -0400 Received: from authenticated.ozlabs.org (localhost [127.0.0.1]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPSA id 41L1r04pPyz9s3q; Wed, 4 Jul 2018 10:21:20 +1000 (AEST) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=canb.auug.org.au DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=canb.auug.org.au; s=201702; t=1530663681; bh=NZO2qxD66oczDk88VJujoKpNeV9fzLlOeIxUKA1aTIk=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=fRUUkDH3+gOTQr1/gDBFvVOnrUhpxDNQfM8H1RZFcAOvy0fejoc4mTh7saVOGm1Bo BNEyEN6h0XCMANK5EPIQwQWbGpBsuv2QDrbEVbKPZoabxiyXzNDxpzHp8R4qlNAFS4 F/u9YXdV4sen1xL/x4SZkOAgnvF8mdMqHZEogAP/TmyUMiomf5/ny+uOwkOb2T88On Sp5vjiwJF/WxRMICz1qIJa3iN0D1siFIIk3nEOM/f+/enS8dWQCVK443f2FMDEB960 NahHnDzRdRVyQ/f2+4eHmuBK26OSb5+sJD/YOtUTlKQ67HCL+e6PL+Pcn/PLWwIQOl vXdQxAM2/+TCQ== Date: Wed, 4 Jul 2018 10:21:20 +1000 From: Stephen Rothwell To: Randy Dunlap Cc: Andrew Morton , Norbert Manthey , Linus Torvalds , David Woodhouse , linux-kernel@vger.kernel.org Subject: Re: [build-check] scripts: add check_build script Message-ID: <20180704102120.591e1074@canb.auug.org.au> In-Reply-To: <01151c44-c3f7-c344-8e58-2e6b348960fb@infradead.org> References: <1530186789-28808-1-git-send-email-nmanthey@amazon.de> <1530623539-650-1-git-send-email-nmanthey@amazon.de> <20180703154914.5d3e8f28e1d87e48180073e3@linux-foundation.org> <01151c44-c3f7-c344-8e58-2e6b348960fb@infradead.org> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; boundary="Sig_/C1ko7lRZKSE=_y.8e1/xHZp"; protocol="application/pgp-signature" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --Sig_/C1ko7lRZKSE=_y.8e1/xHZp Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable Hi all, On Tue, 3 Jul 2018 16:27:06 -0700 Randy Dunlap wrot= e: > > On 07/03/2018 03:49 PM, Andrew Morton wrote: > > On Tue, 3 Jul 2018 15:12:10 +0200 Norbert Manthey = wrote: > >> +build () > >> +{ > >> + local -r LOG_FILE=3D"$1" > >> + local -i STATUS=3D0 > >> + > >> + make clean -j $(nproc) &> /dev/null > >> + make -j $(nproc) &>> "$LOG_FILE" || STATUS=3D$? > >> + > >> + echo "build status: $STATUS" >> "$LOG_FILE" > >> + echo "[$SECONDS] build status: $STATUS" > >> + return "$STATUS" > >> +} =20 > >=20 > > The script never sets nproc. So I guess this is a bare `make -j'.=20 > > When I type that on my (quite beefy) workstation I get eleventy xillion > > processes and the machine locks up. Can't even wiggle the mouse.=20 > > After a 20 minute nap (thanks!) it was still comatose so I hit the big > > button (who writes this junk??). > >=20 > > So you might want to take an educated guess from /proc/cpuinfo here. =20 >=20 > or use > nproc=3D`getconf _NPROCESSORS_ONLN` >=20 > or double it if you want to keep processes ready/waiting. I have a program called nproc on my system. It is part of coreutils. --=20 Cheers, Stephen Rothwell --Sig_/C1ko7lRZKSE=_y.8e1/xHZp Content-Type: application/pgp-signature Content-Description: OpenPGP digital signature -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEENIC96giZ81tWdLgKAVBC80lX0GwFAls8EwAACgkQAVBC80lX 0GzqRwf9Haoym3iewNgcAj5VDsY84PuACdUpgJN2NVBfBtnws7VpnIu73C+4UX0Q X4SbyhA7FsPVVUPXCBSpk69A4UOkJHh/SRuvxQ7QavL+wBm6ys3k9mIxkavCh0Oj CbZCLJObh9818zMnmdQXgXLZBtSU+3PTEoazI7+jpB/xGg1osoNMi5ckXVrmtBtd YTLpYGx9F0+LnA2YhGaEGRSNp5h9tGBaSET3tF6q8ozGQmRLBBxH/yho3WAmHZX9 cb8B5sd+X9413nkvTFAoQLotZkOdLGLSVekKwcM+kCBeDSYU+YUIwChSjPHcD2hR try1Ywd+6oY9XFYHGT7gdHZ1a/YZ8A== =Olae -----END PGP SIGNATURE----- --Sig_/C1ko7lRZKSE=_y.8e1/xHZp--