DPDK: Flows in hold state even at 5 k cps wth http traffic

[Vinod Nair]

At 5 K CPS , see flows in Hold state. The traffic is HTTP traffic with a GET of a 64byte page
Traffic is sent through a L2FWD dpdk app

---------------
    Total Entries --- Total = 201021, new = 1433
    Active Entries --- Total = 200029, new = 1444
    Hold Entries --- Total = 992, new = -11
    Fwd flow Entries - Total = 76215
    drop flow Entries - Total = 123814

gcore and flow is /cs-shared/bugs/1548155

Build 2714 Kilo

[Raja Sivaramakrishnan (raja-u)]

There is an agent crash when running the test. Also, the flow setup rate is less than 10K per second with DPDK. Can you please take a look? Thanks.

[Hari Prasad Killi (haripk)]

With non-dpdk setup as well, with the default configuration flow setup rate of 9 - 10K per second was seen. With flow hold limit set to unlimited, this rate was seen around 30+K per second. Pkt0 interface showed packets being dropped. This issue is reported in https://bugs.launchpad.net/juniperopenstack/+bug/1549674. The same test earlier didnt result in drops on the pkt0 interface.

To check further if pkt_handler in agent is consuming the packets slower.

[Hari Prasad Killi (haripk)]

Issue related to hold flows have been fixed - two issues were fixed in build 2725, post R3.0.