From owner-freebsd-ports-bugs@freebsd.org Sun Sep 11 23:52:15 2016 Return-Path: Delivered-To: freebsd-ports-bugs@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 443C6BD7A54 for ; Sun, 11 Sep 2016 23:52:15 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2001:1900:2254:206a::16:76]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 2CFDCA40 for ; Sun, 11 Sep 2016 23:52:15 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from bugs.freebsd.org ([127.0.1.118]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id u8BNqFsJ021503 for ; Sun, 11 Sep 2016 23:52:15 GMT (envelope-from bugzilla-noreply@freebsd.org) From: bugzilla-noreply@freebsd.org To: freebsd-ports-bugs@FreeBSD.org Subject: [Bug 212592] Default MAKE_JOBS_NUMBER should come from cpuset, not kern.smp.cpus Date: Sun, 11 Sep 2016 23:52:15 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Ports & Packages X-Bugzilla-Component: Ports Framework X-Bugzilla-Version: Latest X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: cperciva@FreeBSD.org X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: portmgr@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_id short_desc product version rep_platform op_sys bug_status bug_severity priority component assigned_to reporter cc Message-ID: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: freebsd-ports-bugs@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Ports bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 11 Sep 2016 23:52:15 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D212592 Bug ID: 212592 Summary: Default MAKE_JOBS_NUMBER should come from cpuset, not kern.smp.cpus Product: Ports & Packages Version: Latest Hardware: Any OS: Any Status: New Severity: Affects Only Me Priority: --- Component: Ports Framework Assignee: portmgr@FreeBSD.org Reporter: cperciva@FreeBSD.org CC: freebsd-ports-bugs@FreeBSD.org The default MAKE_JOBS_NUMBER comes from `sysctl -n kern.smp.cpus`. This is fine in most cases, but if cpuset(1) has been used to limit the CPUs availa= ble, we will end up running too many parallel build steps -- one per CPU present, rather than one per CPU available. Unfortunately cpuset(1) doesn't seem to have an obvious "tell me how many C= PUs I have access to" flag, but something like -_SMP_CPUS!=3D ${SYSCTL} -n kern.smp.cpus +_SMP_CPUS!=3D cpuset -g -p $$ | cut -f 2 -d : | tr , '\n' | wc= -l should probably do the job. (Or, we could just fix cpuset(1) and check OSVERSION to decide whether to query the sysctl or query cpuset.) --=20 You are receiving this mail because: You are on the CC list for the bug.=