On Wed, Jun 29, 2011 at 1:48 PM, Mikael Abrahamsson <swmike@swm.pp.se> wrote:
On Wed, 29 Jun 2011, Cameron Byrne wrote:
Sounds like a vendor specific issue :(
Absolutely, but this is way too typical for these kinds of networks.
Good tcp vs default tcp will not close the window tight due to some ephemeral loss or delay. The penalties are generally too strong in tcp for the issues of delay and loss in 3g ... this is one of the main selling points for tcp proxies .... but better done with modern tcp on the clients instead of a middle box
For what kind of devices? I can get full speed (870 kilobyte/s) on 7.2 HSPA with single TCP stream on a linux box. Are you referring to handsets that get improvement on high latency links?
Yes. Smartphones on UMTS/HSPA have poor bandwidth-delay product, hence it being common for mobile providers to proxy the TCP to open windows faster. Cameron
-- Mikael Abrahamsson email: swmike@swm.pp.se