Ned Deily added the comment: It turns out the times are not important; the hangup is the default size of the socket buffers on OS X and possibly BSD in general. In my case, the send and receive buffers are 8192, which explains why the chunks written are so small. I somewhat arbitrarily changed the sizes of the buffers in _test_send with:
rd.setsockopt(socket.SOL_SOCKET, socket.SO_RCVBUF, support.SOCK_MAX_SIZE // 3) wr.setsockopt(socket.SOL_SOCKET, socket.SO_SNDBUF, support.SOCK_MAX_SIZE // 3) The results were: test_send (__main__.SocketEINTRTest) ... rd SO_RCVBUF default was 8192, wr SO_SNDBUF default was 8192 len(data) = 50331651 sent = 5592405, written = 5592405 chunk = 5592405, total read = 5592405 chunk = 5592405, total read = 11184810 chunk = 5592405, total read = 16777215 sent = 16777215, written = 22369620 chunk = 5592405, total read = 22369620 chunk = 5592405, total read = 27962025 chunk = 5592405, total read = 33554430 chunk = 5592405, total read = 39146835 sent = 22369620, written = 44739240 chunk = 5592405, total read = 44739240 sent = 5592411, written = 50331651 chunk = 5592405, total read = 50331645 chunk = 6, total read = 50331651 ok test_sendall (__main__.SocketEINTRTest) ... rd SO_RCVBUF default was 8192, wr SO_SNDBUF default was 8192 len(data) = 50331651 chunk = 5592405, total read = 5592405 chunk = 5592405, total read = 11184810 chunk = 5592405, total read = 16777215 chunk = 5592405, total read = 22369620 chunk = 5592405, total read = 27962025 chunk = 5592405, total read = 33554430 chunk = 5592405, total read = 39146835 chunk = 5592405, total read = 44739240 sent = None, written = 50331651 chunk = 5592405, total read = 50331645 chunk = 6, total read = 50331651 ok test_sendmsg (__main__.SocketEINTRTest) ... rd SO_RCVBUF default was 8192, wr SO_SNDBUF default was 8192 len(data) = 50331651 sent = 5592405, written = 5592405 chunk = 5592405, total read = 5592405 chunk = 5592405, total read = 11184810 chunk = 5592405, total read = 16777215 chunk = 5592405, total read = 22369620 chunk = 5592405, total read = 27962025 sent = 27962025, written = 33554430 chunk = 5592405, total read = 33554430 chunk = 5592405, total read = 39146835 chunk = 5592405, total read = 44739240 sent = 16777221, written = 50331651 chunk = 5592405, total read = 50331645 chunk = 6, total read = 50331651 ok I dunno if a value that large will work in all environments, so the code to call setsockopt might need to be smarter. ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue23285> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
