From mboxrd@z Thu Jan 1 00:00:00 1970 X-GM-THRID: 6607515809531035648 X-Received: by 2002:a1c:4d0c:: with SMTP id o12-v6mr155041wmh.2.1538472873039; Tue, 02 Oct 2018 02:34:33 -0700 (PDT) X-BeenThere: isar-users@googlegroups.com Received: by 2002:a1c:2d46:: with SMTP id t67-v6ls197682wmt.12.gmail; Tue, 02 Oct 2018 02:34:32 -0700 (PDT) X-Google-Smtp-Source: ACcGV60oB25ht7VVoEiZuFUgnEs1/XGGpREBCQstJcQrTnOHeOEIrS+EHUmwS3AXP8Zn1RT16fY6 X-Received: by 2002:a1c:b457:: with SMTP id d84-v6mr165825wmf.5.1538472872509; Tue, 02 Oct 2018 02:34:32 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1538472872; cv=none; d=google.com; s=arc-20160816; b=okh4/D/PQXFjnTpGLit0vJi5dhluVETzviYDEa/+IXsioDebHYMgTGrt5NedT+jFtX HNSu2VpxiEcMEiThghD691Q+jPohFi0MqBrO7Jr3eCPW6X+wh0tsd6oEi0a9d7EbFs7l DSFdXej6+5Gr57XGUZezfGGDKvxMxl7ofh1S6BXJNmfazQ8Scel/THSb5O5tv8Rsh0o5 oJsOJvLDkHxEXPBc08Y4qKUp7RUNB33oKFVJ8nHH8v4mFNiDYoDqwwiCD0XgaWZnDTLd oY+doLWmgditzNxCGy8Ie1Gt5I+cQ+hkZynBE0oS1WKALYvwqXYcEGcX97M2mHrAjkSQ xyZQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=content-transfer-encoding:content-language:in-reply-to:mime-version :user-agent:date:message-id:from:references:cc:to:subject; bh=WY3MNwEhaB0lcuqZbsBCmHkvvPMJKJtDJ67jbkj7fJs=; b=tFXY92a0Plc9mLY2OFY4fWILGNe52WkLamdzv75cOr8Vu53BXjReSvqrTA9EMofahm SZNSeFb3j/taP4DgRAfi9jMenW9MbDf+LeCU34tqJiQidGdWDVi/UFkcBXD5jKXOx5vG E3LxTt/c1id0CWHMQrBCyo/a4g4EnebLGaKNIgVtc+fjNBoVT8gKjoF6SSkkicW/MT5R rFJRvTAmEdmEM2m2RhUldBLmtvre3a8NiakU7EgVnDvBZCq8Yb5hSbDag6WGWzIdV8zt 7CcDB07F6GZyOOxP/a0YvfTj+1xbiiwJrDNA8muxlVm6naiJrUpfOIQ1NzADwjqCss8b 3/tQ== ARC-Authentication-Results: i=1; gmr-mx.google.com; spf=pass (google.com: domain of jan.kiszka@siemens.com designates 192.35.17.14 as permitted sender) smtp.mailfrom=jan.kiszka@siemens.com Return-Path: Received: from david.siemens.de (david.siemens.de. [192.35.17.14]) by gmr-mx.google.com with ESMTPS id q21-v6si654187wmf.3.2018.10.02.02.34.32 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 02 Oct 2018 02:34:32 -0700 (PDT) Received-SPF: pass (google.com: domain of jan.kiszka@siemens.com designates 192.35.17.14 as permitted sender) client-ip=192.35.17.14; Authentication-Results: gmr-mx.google.com; spf=pass (google.com: domain of jan.kiszka@siemens.com designates 192.35.17.14 as permitted sender) smtp.mailfrom=jan.kiszka@siemens.com Received: from mail1.sbs.de (mail1.sbs.de [192.129.41.35]) by david.siemens.de (8.15.2/8.15.2) with ESMTPS id w929YVNm007572 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK) for ; Tue, 2 Oct 2018 11:34:32 +0200 Received: from [139.22.44.111] ([139.22.44.111]) by mail1.sbs.de (8.15.2/8.15.2) with ESMTP id w929YUWL021834; Tue, 2 Oct 2018 11:34:31 +0200 Subject: Re: [PATCH] u-boot-custom: Fix parallel build To: Henning Schild Cc: isar-users References: <96b3773c-1db0-41c3-ff20-734535499974@siemens.com> <20181002113104.54503304@md1pvb1c.ad001.siemens.net> From: Jan Kiszka Message-ID: <7c8dbdbe-b40d-19f8-8085-a0910abb3672@siemens.com> Date: Tue, 2 Oct 2018 11:34:29 +0200 User-Agent: Mozilla/5.0 (X11; U; Linux i686 (x86_64); de; rv:1.8.1.12) Gecko/20080226 SUSE/2.0.0.12-1.1 Thunderbird/2.0.0.12 Mnenhy/0.7.5.666 MIME-Version: 1.0 In-Reply-To: <20181002113104.54503304@md1pvb1c.ad001.siemens.net> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-TUID: RrM238Gk7hGV On 02.10.18 11:31, Henning Schild wrote: > Am Tue, 2 Oct 2018 00:15:55 +0200 > schrieb "[ext] Jan Kiszka" : > >> Do to missing "echo", we were running with "-j" so far, and the build >> log contained some complains about unknown commands. >> >> Signed-off-by: Jan Kiszka >> --- >> meta/recipes-bsp/u-boot/files/debian/rules | 2 +- >> 1 file changed, 1 insertion(+), 1 deletion(-) >> >> diff --git a/meta/recipes-bsp/u-boot/files/debian/rules >> b/meta/recipes-bsp/u-boot/files/debian/rules index deb7c8e..1d9e645 >> 100755 --- a/meta/recipes-bsp/u-boot/files/debian/rules >> +++ b/meta/recipes-bsp/u-boot/files/debian/rules >> @@ -12,7 +12,7 @@ export CROSS_COMPILE=$(DEB_HOST_GNU_TYPE)- >> SET_CROSS_BUILD_TOOLS=CROSS_BUILD_TOOLS=y >> endif >> >> -PARALLEL_BUILD=-j $(shell $$(($$(nproc) * 2))) >> +PARALLEL_BUILD=-j $(shell echo $$(($$(nproc) * 2))) > > Why the "*2", usually nproc or nproc+1 should be what you want. And in > that case "nproc" is simpler to script. You usually do 2-times overcommitment with such workloads to ensure that no single CPU is idling because of I/O delays. Jan -- Siemens AG, Corporate Technology, CT RDA IOT SES-DE Corporate Competence Center Embedded Linux