New submission from Bohuslav "Slavek" Kabrda: Hi, with Python 3.3/3.4, I noticed that there are lots of syscalls on open() - I noticed 2x fstat, 2x ioctl and 2x lseek. This is not noticable when working with small amounts of files on local filesystem, but if working with files via NSF or if working with huge amounts of files, lots of syscalls cost a lot of time. Therefore I'd like to create patches that would reduce the number of syscalls on open(). I've already managed to create first one (attached), that gets rid of one of the fstat calls (all the information are obtained from one fstat call). I hope this makes sense and that the patch is acceptable. If not, I'll be happy to work on it to make it better. (This is my first real patch for C part of Python, so I hope I did everything right...)
---------- components: IO files: python3-remove-extraneous-fstat-on-file-open.patch keywords: patch messages: 219874 nosy: bkabrda priority: normal severity: normal status: open title: Prevent extraneous fstat during open() type: resource usage versions: Python 3.4, Python 3.5 Added file: http://bugs.python.org/file35494/python3-remove-extraneous-fstat-on-file-open.patch _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue21679> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
