nsslapd-threadnumberis set to 6 or 8 (on a Montvale-based test bed with 8 CPUs). Based on the performance test experiment, the best exact search performance occurs only when nsslapd- threadnumber is tuned close to the number of CPUs. This performance characteristic is verified with up to 8 CPUs on a Montvale-based test bed.

When tuning this parameter, consider the following:

•If the directory only serves non-SSL based search requests, tune nsslapd-threadnmberstarting from where it equals the number of CPUs.

•If the directory needs to handle time-consuming operations that require threads to be blocked for a long time, such as SSL based searches, then tune up the nsslapd-threadnumber.

•If a large number of clients are concurrently requesting connections, tune up the nsslapd- threadnumber.

•If you experience low CPU utilization under a heavy load, or slow response time, try to tune up nsslapd-threadnumberand see if performance improves.

Figure 1: Performance based on nsslapd-threadnumber

 

 

 

25000

 

 

 

 

 

 

 

operations/sec

20000

 

 

 

 

 

 

 

15000

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

10000

 

 

 

 

 

 

2 dual-core CPUs

 

5000

 

 

 

 

 

 

 

 

0

 

 

 

 

 

 

 

 

0

20

40

60

80

100

120

140

 

 

 

 

number of threads

 

 

 

nsslapd-dbcachesize

The nsslapd-dbcachesizeparameter is described as follows in the HP-UX Directory Server configuration, command, and file reference:

nsslapd-dbcachesize

This performance tuning attribute specifies the database index cache size. It is one of

the most important values for controlling how much physical RAM the directory server uses. This is not the entry cache. This is the amount of memory the Berkeley database backend will use to cache the indexes (the .db4 files) and other files. This value is passed to the Berkeley DB API function set_cachesize. If automatic cache resizing is activated, this attribute is

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HP UX Direry Server manual Nsslapd-dbcachesize
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UX Direry Server specifications

HP UX Directory Server is a robust and scalable solution designed for managing directory information within enterprise networks. Developed by Hewlett-Packard (HP), this server offers an extensive set of features tailored to meet the needs of organizations that require an efficient way to store, manage, and retrieve identity and access data.

One of the key features of HP UX Directory Server is its ability to handle large directories with significant volumes of data. Built on a highly optimized architecture, it provides excellent performance and can support millions of entries without sacrificing speed or reliability. This capability makes it an ideal choice for large-scale deployments in enterprises that require high availability and responsiveness.

In addition to its scalability, HP UX Directory Server supports a wide range of protocols, including LDAP (Lightweight Directory Access Protocol), which ensures seamless integration with diverse applications and systems across various platforms. The server maintains standards compliance, which facilitates interoperability and simplifies administration tasks.

Security is a top priority for HP UX Directory Server, offering an array of features to protect sensitive information. It supports secure data transmission via TLS/SSL protocols, ensuring encrypted communication between clients and servers. Advanced access controls allow administrators to define fine-grained permissions, helping to safeguard directory data against unauthorized access.

Another salient feature of HP UX Directory Server is its replication capabilities. The server can replicate directory data across multiple instances, ensuring data consistency and availability in distributed environments. This feature is essential for businesses operating across different geographical locations or requiring failover solutions for disaster recovery.

HP UX Directory Server also comes equipped with tools for data management, including an intuitive administration console for configuring and monitoring the server. Additionally, it offers customizable schema capabilities, enabling organizations to tailor the directory structure to fit their specific needs.

Integration with existing identity management solutions is streamlined through connectors and APIs, allowing organizations to extend their directory services and enhance user experience.

In summary, HP UX Directory Server is a powerful directory management solution that combines scalability, security, and integration flexibility. Its support for industry standards, advanced replication, and comprehensive administrative tools makes it an essential asset for organizations seeking to manage identity and access efficiently. By leveraging this technology, businesses can improve their operational efficiency and ensure a secure and organized approach to directory management.
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