| Dan Stromberg 2005-09-28, 9:57 pm |
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Is there a way of increasing the amount of memory available for TCP
buffers, that could be used for large TCP windows?
Specifically, I'm trying to set a TCP window size of 2 megabytes using
SO_SNDBUF, but I get an error like:
esmf04m-strombrg> ~/npf/pnetcat -w $[2*1024*1024] -O seki.nac.uci.edu 5432 -i -v < /dev/zero
Traceback (most recent call last):
File "/u/strombrg/npf/pnetcat", line 299, in ?
output_socket.setsockopt(socket.SOL_SOCKET, socket.SO_SNDBUF, tcp_window_size)
File "<string>", line 1, in setsockopt
socket.error: (74, 'No buffer space available')
Tue Sep 27 18:47:43
....but using just 1 megabyte works fine.
(For info about TCP buffers, please see Stanford's excellent course
notes: http://www.stanford.edu/class/cs244...6_Transport.ppt -
and there's a web version available via google, or openoffice can
convert it to html or pdf, and if you want a PalmOS .pdb of it, drop me
a note :)
Thanks!
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