On Tue, Jan 09, 2001 at 03:56:11PM -0500, Tim Sailer wrote: > > The defaults must be large unless your application calls setsockopt() to > > set the buffers itself. (Some FTP clients and servers can do this, but > > for testing, your're still probably better always having the _max's and > > _default's the same.) > > Hm.. OK. I think we tried that, but I'll check again.
And make sure your ftp client/server isn't resetting it to something small
afterwards. For testing this, I'd use a real IP benchmarking program
like iperf/netperf/ttcp, as they'll let you test different buffer sizes
easily (and in the case of iperf tell you what you're actually using
if you hit the limit) For a fast WAN you want something like
512k-1M buffers easily.
--
Pekka Pietikainen
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