On Mar 6, 2014, at 5:56 AM, Cosmin Marius Caba <[email protected]> wrote:
> What does the lookups entry mean? More specifically the lost counter?
From the ovs-dpctl man page:
The "lookups" row displays three stats related to flow lookup
triggered by processing incoming packets in the datapath. "hit"
displays number of packets matches existing flows. "missed" dis‐
plays the number of packets not matching any existing flow and
require user space processing. "lost" displays number of pack‐
ets destined for user space process but subsequently dropped
before reaching userspace. The sum of "hit" and "miss" equals to
the total number of packets datapath processed.
> Is the lost counter in the lookups entry related to the number of dropped
> packets that I see at the end-points of a traffic low?
Most likely. There are other places in the network where packets can get lost,
too.
> If yes, then why there are no dropped packets on any of the ports?
Which ports? It sounds like you are experiencing packet loss.
By the way, starting in OVS 1.11, the number of "lost" packets in most
deployments should be substantially reduced.
--Justin
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