Date: Mon, 21 Aug 2017 19:54:10 +0000 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 Message-ID: <bug-221700-21822-vUoSVD7qfy@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-221700-21822@https.bugs.freebsd.org/bugzilla/> References: <bug-221700-21822@https.bugs.freebsd.org/bugzilla/>
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Ed Maste <emaste@freebsd.org> has reassigned Bugzilla Automation <bugzilla@FreeBSD.org>'s request for maintainer-feedback to FreeBSD Python <python@FreeBSD.org>: 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.
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