Hi Venkatesh,
From the PS trace analysis report, the normal priority message queue was high and worker threads were spending some time waiting for available LDAP bank.
Three connections are made to each LDAP bank specify in user directory setup. To increase the throughput of each LDAP server, try adding more LDAP bank. For example, create 2/3 alias for the same LDAP server and specify that in load balancing mode. Thus, more connections can be made to the user directory and worker threads have more LDAP bank options.