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Old September 18th, 2002, 10:31 AM
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Broadband Optimization in 10.2

I'm by no means an expert using the terminal commands, but i was poking around the other day and i was hoping someone can validate what i did.

After looking how the software BroadbandOptimizer worked, i checked to see if jaguar implemented this. When I typed sysctl -a in the terminal, a large list of variables came up.. 4 of which are changed using BroadbandOptimizer. (net.inet.tcp.sendspace, net.inet.tcp.recvspace, net.inet.tcp.delayed_ack, net.inet.udp.recvspace). So instead of installing BroadbandOptimizer, i manually changed those variables to the larger amounts (ie: sudo sysctl -w net.inet.tcp.sendspace=65536). The only one I couldn't change was net.inet.tcp.delayed_ack which is set at 1 and won't change to 0. My connection is MUCH faster now (t1) but i really hope i didn't mess anything up

any comments on this?
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Old September 18th, 2002, 11:37 AM
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Basically you did the same thing Broadband Optimizer does, except you did it via command line whereas BBO does it via GUI!
Why didn't the one parameter change from 1 to 0? Did you get an error message? the use of sudo should allow you to change anything.

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Old September 19th, 2002, 09:55 AM
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What you did only works until you restart, though.

To make it permanent edit your /etc/rc file.

sudo pico /etc/rc (use your favorite text editor in place of pico)

Scroll all the way to the end using the down arrow key. You want to add the lines in red:

SystemStarter ${VerboseFlag}

sysctl -w net.inet.tcp.recvspace=65536
sysctl -w net.inet.tcp.sendspace=65536
sysctl -w net.inet.tcp.delayed_ack=0


exit 0
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Old September 19th, 2002, 10:51 AM
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Thanks!

I knew something was wrong thanks for the info!
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