MDM java api performance

HI,

I access mdm table through java api, but it takes a long time to create session, it's about more than 70 seconds,that is unacceptable,

what's wrong with below java code:

UserSessionContext userCtx = new UserSessionContext(serverName,repositoryName, regionName, userName);

String session = SessionManager.getInstance().createSession(userCtx, SessionTypes.USER_SESSION_TYPE, password);

In addtion， the same problem exists when creating result definition for result table, below is the code:

ResultDefinitionEx resDef = new ResultDefinitionEx("M_CODER", userCtx);