On 8/24/06, Scott Radvan <[EMAIL PROTECTED]> wrote:
I have been installing 4.0- beta snapshots via FTP on a few machines (i386 and amd64) and after installation, one of the sysctl modifications I always make is increasing net.inet.tcp.recvspace so I can make full use of my 9Mbit ADSL2+ line.
During some very simple tests to a remote ftp server via my home internet connection (~6mbit/s) I noticed that the default recvspace of 16384 is almost 50% slower than a recvspace of 65535. I have read the FAQ's section on "Tuning networking parameters" and section 6.6.4 says that increasing the recvspace/sendspace is only needed on "really high-speed, high traffic links." I personally don't feel that a 6mbit/s cable line qualifies as a "real high-speed, high traffic link" but it might have to the author when this part of the FAQ was written. I had not, until reading Scott's comment about increasing recvspace on a 9mbit Adsl line, thought that I might see an increase in performance on my own line. Does it make sense to either increase the default recvspace, or to change the documentation to indicate that users on home connections might see a speed increase by bumping up the recvspace? Thanks, Sam
