From owner-freebsd-python@freebsd.org Mon Aug 21 19:54:10 2017 Return-Path: Delivered-To: freebsd-python@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 CDDAFDCC43D for ; Mon, 21 Aug 2017 19:54:10 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mailman.ysv.freebsd.org (unknown [127.0.1.3]) by mx1.freebsd.org (Postfix) with ESMTP id B5CDE8242E for ; Mon, 21 Aug 2017 19:54:10 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: by mailman.ysv.freebsd.org (Postfix) id B228ADCC43B; Mon, 21 Aug 2017 19:54:10 +0000 (UTC) Delivered-To: python@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 B1D3FDCC43A for ; Mon, 21 Aug 2017 19:54:10 +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 9FFAC8242D for ; Mon, 21 Aug 2017 19:54:10 +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 v7LJsAk0075858 for ; Mon, 21 Aug 2017 19:54:10 GMT (envelope-from bugzilla-noreply@freebsd.org) Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="UTF-8" From: bugzilla-noreply@freebsd.org To: python@FreeBSD.org Subject: maintainer-feedback requested: [Bug 221700] lang/python: subprocess does not use closefrom, calls close(2) hundreds of thousands of times Date: Mon, 21 Aug 2017 19:54:10 +0000 X-Bugzilla-Type: request X-Bugzilla-Product: Ports & Packages X-Bugzilla-Component: Individual Port(s) X-Bugzilla-Version: Latest X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: python@FreeBSD.org X-Bugzilla-Flags: maintainer-feedback? Message-ID: In-Reply-To: References: X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: freebsd-python@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: FreeBSD-specific Python issues List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 21 Aug 2017 19:54:10 -0000 Ed Maste has reassigned Bugzilla Automation 's request for maintainer-feedback to FreeBSD Python : Bug 221700: lang/python: subprocess does not use closefrom, calls close(2) hundreds of thousands of times https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D221700 --- Description --- % python --version Python 2.7.13 % pkg info python | grep Version Version : 2.7_3,2 % ktrace -i python -c 'import subprocess; subprocess.call("/usr/bin/true", close_fds=3DTrue);' % kdump -s | egrep -c 'CALL.*close' 939647 excerpt from kdump: 1958 python2.7 CALL close(0x3) 1958 python2.7 RET close -1 errno 9 Bad file descriptor 1958 python2.7 CALL close(0x5) 1958 python2.7 RET close -1 errno 9 Bad file descriptor 1958 python2.7 CALL close(0x6) 1958 python2.7 RET close -1 errno 9 Bad file descriptor 1958 python2.7 CALL close(0x7) 1958 python2.7 RET close -1 errno 9 Bad file descriptor 1958 python2.7 CALL close(0x8) 1958 python2.7 RET close -1 errno 9 Bad file descriptor 1958 python2.7 CALL close(0x9) 1958 python2.7 RET close -1 errno 9 Bad file descriptor ... 1958 python2.7 CALL close(0xe5628) 1958 python2.7 RET close -1 errno 9 Bad file descriptor 1958 python2.7 CALL close(0xe5629) 1958 python2.7 RET close -1 errno 9 Bad file descriptor 1958 python2.7 CALL close(0xe562a) 1958 python2.7 RET close -1 errno 9 Bad file descriptor 1958 python2.7 CALL close(0xe562b) 1958 python2.7 RET close -1 errno 9 Bad file descriptor This has both a performance impact and an impact on the ability to debug problems with python programs.