Measurement and analysis of LDAP performance

The Lightweight Directory Access Protocol (LDAP) is being used for an increasing number of distributed directory applications. We describe a tool to analyze the performance of LDAP directories. Using the tool, we study the performance of a LDAP directory under a variety of access patterns. For the purpose of these experiments, we use a LDAP schema that has been proposed for the administration of Service Level Specifications (SLSs) in a differentiated services network. In addition, individual modules in the server and client code are instrumented to obtain a detailed profile of their contributions to the overall system latency and throughput. We discuss the importance of the factors in determining scalability, namely frontend versus back-end processes, CPU capability, and available memory. Under our normal operating conditions, a LDAP directory with 10,000 entries is found to have a response time of 8 ms, and a maximum throughput of 140 search requests per second. Out of the total re...

• Type: Conference
• Year: 2000
• Where: SIGMETRICS
• Authors: Xin Wang, Henning Schulzrinne, Dilip D. Kandlur, Dinesh C. Verma
• Keywords: Hardware, LDAP, LDAP Directory, Lightweight Directory Access Protocol, SIGMETRICS 2000