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> My problem now is, that the ADSL user complains about very low speed > (2-3 times slower) since we switched to OpenVPN. I know that firebird > performance depends on RTT. Firebird does a lot of small transfers > with a lot of ACKs flowing around. What can I do to improve performance? > > I already use TCP for the tunnel connection, "comp-lzo" is activated. > Which MTU / MSSFIX settings are recommended for ADSL? I doubt it > would help as line MTU is handled by each router seperatly. > > Another point might be: how to improve RTT when a datatransfer is > running over the tunnel? I actually see stable RTT of ~80ms to the > ADSL client but when the application does some data transfer, it goes > up to 300ms and more. How to get this more stable? Use udp protocol for tunneling because it is faster. You can also use non heavy crypting algoritm like blowfish. Qos on adsl side can also make line "faster". Limiting bandwith a bit can make adsl much more faster. -- Eero ______________________ OpenVPN mailing lists https://lists.sourceforge.net/lists/listinfo/openvpn-users |