casual MacOS TCP tuning
since first tuning of FreeBSD TCP/IP stack somewhere in 4.x, I’m typically fiddling with the /etc/sysctl.conf contents from time to time. you know, just to tune stuff. in the meantime, a lot of things has changed in FreeBSD TCP/IP stack, including introduction of modularity. however, MacOS X that is based on FreeBSD is much more conservative and some options are not available. therefore, on my MacOS systems I use following /etc/sysctl....