Comment 3 for bug 1324914

Vladimir, the real use cases are the following:
Fuel 4.1a, 50 hardware servers with 64 Gb of RAM, 16 cores per server.
We want to install OpenStack cloud with 3 controllers and 47 compute nodes.
Users want to run Rally benchmark and verify that this cloud works correctly.

Expected Result: Rally benchmark shows that OpenStack cloud works with 1000+ users in parallel
Observed Result: Rally benchmark shows that OpenStack cloud works with 20 users in parallel without errors, and 50 users with errors in Neutron logs. If we will increase the count of workers and pool size to data base, as described here, we can encrise count of users up to 150 users simultaneously without errors.

see detailed report of performance testing: https://docs.google.com/a/mirantis.com/spreadsheets/d/1zPGz-HHTdv5L9D3sLA_COJuksm4yYK3rzjIyCvKRYMI/edit#gid=577770957