North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: Adjusting TCP windows on production systems?
Just as a head up - this sort of below should not be done on things like web servers that support lots of concurrent connections - you'll eat all your memory for sockets. Marshall Eubanks wrote: On Tue, 30 Sep 2003 15:44:03 -0400 As a concrete data point: the tuning below on Solaris 9 increased the TCP data transfer rates from SJC to NYC by a factor of 10: (i.e. from 2 to about 20Mbps with ftp; 1 to 11Mbps with scp.) ndd -set /dev/tcp tcp_recv_hiwat 400000 ndd -set /dev/tcp tcp_xmit_hiwat 400000 ndd -set /dev/tcp tcp_wscale_always 1 ndd -set /dev/tcp tcp_max_buf 10485760
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