We have installed this network testing environment:
which seems pretty nice overall.
It allows you to artificially degrade your network performance by issuing tc commands to directly affect your networking.
I have it set up on two CentOS 6 machines – one a Dell server, one a VirtualBox VM. The tc syntax seems OK, it seems to all make sense – only it seems to have no effect whatsoever on the actual network performance.
Hence the question: is there a known issue with tc? Am I perhaps missing some kernel modules, or do I perhaps now have some kernel parameters set correctly?
Any insight will be helpful.
Thanks in advance,