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Unfortunately, with XP SP2, Cygwin 1.5 as the server machine, I get pretty much the same symptoms with each of the above ftpds serving up a 350mb file:
1. In all cases, the ftpd process' memory usage increases to ~350mb, 2. As the buffer value decreases, the process' cpu usage increases (ftpd-1k.exe used about 75% of the cpu vs. about 10% for ftpd-8k.exe), 3. Performance jumped around (ftpd-1k transferred the file in 90seconds, ftpd-4k in 166 seconds, ftp-8k in 114 seconds on a wired network)
Quick addendum: I copied over in.ftpd.exe from another Cygwin installation running inetutils 1.3.2 and symlinked it to ftpd on my server; using that to serve the same file, memory usage sticks at 3500kb, cpu usage never rises about 5%, and the file was delivered in 194 seconds.
-- Chuck
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