From owner-freebsd-python@freebsd.org Mon Aug 21 19:54:11 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 1A4C8DCC449 for ; Mon, 21 Aug 2017 19:54:11 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mailman.ysv.freebsd.org (mailman.ysv.freebsd.org [IPv6:2001:1900:2254:206a::50:5]) by mx1.freebsd.org (Postfix) with ESMTP id 01A3082431 for ; Mon, 21 Aug 2017 19:54:11 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: by mailman.ysv.freebsd.org (Postfix) id 00F26DCC447; Mon, 21 Aug 2017 19:54:11 +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 009D4DCC446 for ; Mon, 21 Aug 2017 19:54:11 +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 E273F82430 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 v7LJsAk4075858 for ; Mon, 21 Aug 2017 19:54:10 GMT (envelope-from bugzilla-noreply@freebsd.org) From: bugzilla-noreply@freebsd.org To: python@FreeBSD.org Subject: [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-Reason: AssignedTo X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None 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: emaste@freebsd.org X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: python@FreeBSD.org X-Bugzilla-Flags: maintainer-feedback? X-Bugzilla-Changed-Fields: bug_id short_desc product version rep_platform op_sys bug_status bug_severity priority component assigned_to reporter blocked flagtypes.name 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-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 19:54:11 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D221700 Bug ID: 221700 Summary: lang/python: subprocess does not use closefrom, calls close(2) hundreds of thousands of times Product: Ports & Packages Version: Latest Hardware: Any OS: Any Status: New Severity: Affects Only Me Priority: --- Component: Individual Port(s) Assignee: python@FreeBSD.org Reporter: emaste@freebsd.org Blocks: 221696 Assignee: python@FreeBSD.org Flags: maintainer-feedback?(python@FreeBSD.org) % 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. Referenced Bugs: https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D221696 [Bug 221696] sysutils/py-diffoscope: Tests run significantly slower on Free= BSD than on other platforms --=20 You are receiving this mail because: You are the assignee for the bug.=