subprocess.Popen is much SLOWER than os.popen() on Mac and Solaris. The goal is to read the output of a command (through a pipe) as fast as possible. The problem is the pipe buffering (the reader file in the Python process).
Today, subprocess.Popen() uses bufsize=0 by default. It should be bufsize=(-1): use the system default buffer size. ==> http://bugs.python.org/issue4194 Note: On Linux the performances between subprocess (unbuffered) and popen() (buffered) are the same, which is quite strange. Victor _______________________________________________ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
