[ovs-dev] [PATCH] ovs-test: A new tool that allows to diagnose connectivity and performance issues
jesse at nicira.com
Wed Nov 2 22:49:23 UTC 2011
On Mon, Oct 31, 2011 at 5:00 PM, Ansis Atteka <aatteka at nicira.com> wrote:
> UDP performance is currently limited to much lower numbers than for TCP.
> This could be improved in future releases. The cause for UDP performance
> penalty is:
> python uses much smaller buffers in sendto() function, and
> UDP-flow control is implemented on events which are timer triggered;
I think this is not that big of a deal. Since this test is primarily
about vlans and not performance, the absolute number isn't really that
important. This is particularly true with UDP where for a given size
I would expect it to either work or not.
UDP also almost always has lower performance than TCP anyways because
there are fewer offloads.
I see that you still have a fixed set of sizes to try for UDP packets,
did you look into detecting the MTU?
More information about the dev