flow collection did not collect all flows before mininet restart

1. 1. Test Description
      Configures 80k flows wait for collection, restart mininet, verify if all flows are configured.

1. 1. Helium design plugin:

1. 1. Test Environment

Cluster size 1
ODL VM 16GB RAM, 4 CPUs
ODL Java setup JVM 8GB, permGen 512MB
Garbage Collection default
Karaf Features odl-openflowplugin-flow-services-ui, odl-openflowplugin-drop-test
Java version Java(TM) SE Runtime Environment (build 1.7.0_67-b01)
64-Bit Server VM (build 24.65-b04, mixed mode)
OVS version 2.3.0
mininet 2.1.0.0
Datastore CDS

Tested https://jenkins.opendaylight.org/releng/view/autorelease/job/autorelease-release-lithium/16/

1. 1. Synopsis
      Statistic collection is slow
      After mininet restart not all flows were installed on the switch (79915 out of 80k), but all were collected well

1. 1. Results

• • • Test summary:
      Elapsed time: 94.16s
      Peak requests/s: 43.97 OK, 43.97 Total
      Peak flows/s: 879.39 OK, 879.39 Total
      Avg. requests/s: 42.48 OK, 42.48 Total (96.61% of peak total)
      Avg. flows/s: 849.61 OK, 849.61 Total (96.61% of peak total)

• • • Total flows added: 80000
      HTTP[OK] results: 4000

(1433505936.656597, 63, 34287, 33280)
(1433505967.514324, 63, 46907, 42920)
(1433506000.828647, 63, 61207, 57440)
(1433506032.962332, 63, 70487, 67160)
(1433506064.336118, 63, 80007, 78080)
(1433506098.030354, 63, 80567, 80000)
(1433506127.526014, 63, 80567, 80000)
(1433506158.919524, 63, 80567, 80000)
(1433506188.45005, 63, 80567, 80000)
(1433506220.132587, 63, 80567, 80000)
Could not retrieve inventory, response not in JSON format HERE MININET RESTART
(1433506229.016549, 0, 0, 0)
(1433506259.058908, 20, 0, 0)
(1433506291.233269, 50, 10861, 10940)
(1433506322.884356, 63, 17286, 20175)
(1433506355.107095, 63, 30271, 31215)
(1433506390.31891, 63, 41232, 40935)
(1433506418.442143, 63, 47008, 46675)
(1433506450.489636, 63, 59798, 59375)
(1433506483.171011, 63, 68801, 68315)
(1433506514.544728, 63, 76855, 76315)
(1433506548.422402, 63, 80482, 79915)
(1433506579.671852, 63, 80482, 79915)
(1433506608.50574, 63, 80482, 79915)
(1433506641.076618, 63, 80482, 79915)
(1433506669.60802, 63, 80482, 79915)
(1433506699.529991, 63, 80482, 79915)

Deleting all flows in bulk:
All flows deleted.
(1433506721.322773, 63, 80482, 79915)
(1433506735.462217, 63, 1807, 2460)
(1433506764.848048, 63, 567, 0)