Load tests fail on larger load (e.g. 150 concurrent users or more) in load-balanced, clustered Enterprise Portal Environment
With fewer concurrent requests (~50) this issue does not manifest through mod_cluster. This issue happens only with mod_cluster and larger load.
There are no problems with even larger loads (~200) when the same tests are executed directly on the nodes (without mod_cluster). We're using EWS 1.0.2 and thus the version of Apache that's bundled with it. We're using worker module. We're also using HTTPS instead of AJP connector. as usage of SSL is a requirement.