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From: Riccardo M. <ric...@gm...> - 2012-03-08 10:57:16
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Hello, On Sat, Jun 25, 2011 at 15:28, Manfred Haertel <Man...@rz...> wrote: > The slirp utility defers the TCP ACK for 200 milliseconds (which may be a > good idea on a slow modem connection, but not in an UML environment). > > This limits the throughput to something around 9000 bytes (the TCP window > size) in 0.2 seconds, leading to something around 45 or 46 kBytes per > second. > > The solution is a very small patch to slirp to send out the ACK immediatly. > Now I have also full speed when sending data from the UML guest to the host! > :-) > Debian has merged this patch into their slirp package starting from version 1.0.17-6. So the `slirp-fullbolt` command on wheezy will soon implement a real full-bolt :-) See: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=658359 Thanks for the patch! Riccardo |