Internet Sharing via Ethernet Painfully Slow
I have two iMacs running SnowLeopard, one of them newer and faster than the other.
When either one is connected directly to my cable modem, internet performance is fine. But since I need to use both of them, I've connected the cable modem and the two iMacs to an ethernet router. I booted the newer mac first, and let the system software automatically configure itself to the cable modem. After I enabled internet sharing via ethernet, I booted the older machine, and it automatically configured itself to the internet service being served up by the newer machine.
Sharing works; both machines can access the internet. And internet performance on the primary machine, the newer one, is fine.
But internet performance on the older machine, the one that is receiving the internet service being served up by the newer machine, is painfully slow. About half the time web pages don't load; the browser times out.
I'm also using the newer machine to provide internet to my iPhone using wifi, and browser responsiveness on my iPhone is much faster than on my older iMac. Which is on an ethernet network.
This is puzzling to me, since ethernet should be much faster than wifi. Any suggestions for improving the situation would be appreciated.
iMac, Mac OS X (10.6.8)