I have the following experiment and whenever I check ovs-dpctl
dump-flows, it gives me less than 7k entries:
There are three machines A,B, and C. B runs openvswitch and connect the
other two. A and B send 10k packets each second from different flows to
the other node. I don't use TCP so there is no ack. There should be 20k
entries there after a second but I get at most 7k and the value changes.
It seems that the facet cache cannot hold enough facets, so it replaces
them so often. The high cpu usage for ovs-vswitchd process also confirms
this claim that the cache cannot hold all entries.
suppose 100k new flows (however, because of the previously mentioned
claim, it does not matter).
On 4/5/2012 5:41 PM, Jesse Gross wrote:
On Thu, Apr 5, 2012 at 5:26 PM, Masoud Moshref Javadi
<[email protected]> wrote:
What is the maximum size of the kernel table?
There's no hard limit but the number of flows is regulated by
userspace to avoid excessive overhead. This is generally in the range
of a few thousand flows.
What will happen if I have
100k flows per second, will they be dropped? queued?
100k flow setups per second? Or 100k sustained flows?
_______________________________________________
discuss mailing list
[email protected]
http://openvswitch.org/mailman/listinfo/discuss
