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Re: inetutils 1.5 / ftpd problem: 426 Data connection: No buffer space available.
antony baxter wrote:
Better, in the sense that I can now retrieve the file; however
ftpd.exe's memory usage (monitored via Task Manager) now grows
continously during the transfer until eventually the server machine
grinds to a halt, paging furiously. Once the transfer does finally
finish ftpd.exe's memory usage drops back to normal (2,400K).
Hmm. A little more research shows winsock's internal behavior --
transfers, waitiong for ack, allocating internal buffers -- is very
sensitive to the size of so_sndbuf (winsock default 8192) and the packet
size (ethernet default 1560). See if one of these options gives better
performance:
http://cygwin.cwilson.fastmail.fm/ITP/ftpd-1k.exe.bz2
http://cygwin.cwilson.fastmail.fm/ITP/ftpd-4k.exe.bz2
http://cygwin.cwilson.fastmail.fm/ITP/ftpd-8k.exe.bz2
http://cygwin.cwilson.fastmail.fm/ITP/ftpd-32k.exe.bz2 (same as prev)
Also, what is the value of
HKLM\System\CurrentControlSet\Services\Tcpip\Parameters\TcpWindowSize
--
Chuck
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