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Tuning
Use this information to improve HCL Domino® server, Domino Web server, and messaging performance through the use of resource balancing and activity trends, Server.Load commands, advanced database properties, cluster statistics, and the Server Health Monitor.
Improving Domino® server performance
Read the following topics for help on improving basic Domino® server performance and capacity, as well as the performance of these features: Agent Manager, databases and the Domino directory, the directory catalog, LDAP searches, mail, Web server, and UNIX™ server.
Improving partitioned server performance and capacity
You use the same set of tools to monitor partitioned servers as you use to monitor individual servers. However, remember that a partitioned server can use a large number of system resources, denying those resources to other partitioned servers on the same computer.

Tuning
Use this information to improve HCL Domino® server, Domino Web server, and messaging performance through the use of resource balancing and activity trends, Server.Load commands, advanced database properties, cluster statistics, and the Server Health Monitor.
- Using activity trends
  Domino® server resource utilization can be separated into two types, system activity and user activity. System activity, which includes the level of processor, disk, memory, and network consumption that Domino generates to keep the server running, is a fixed amount of activity, as long as systems are healthy and performing smoothly. Domino servers typically use a modest percentage of their resources to run. The remaining server capacity is used to support user activity, which varies with the usefulness of the data on the server.
- The Server.Load tool
  Server.Load is a capacity-planning tool that you use to run tests, also called "scripts" and "workloads," against a targeted Domino® server to measure server capacity and response metrics.
- Tuning Domain Indexer performance
  Each time the Domain Indexer task runs, it looks in the Domain Catalog for new databases that have the Include in multi database indexing property enabled. It then looks for documents and files in existing databases and file systems that are new or changed since the last time it ran, and adds them to the Domain Index.
- Improving Domino® server performance
  Read the following topics for help on improving basic Domino® server performance and capacity, as well as the performance of these features: Agent Manager, databases and the Domino directory, the directory catalog, LDAP searches, mail, Web server, and UNIX™ server.
  - Tools for measuring server performance
    Domino® offers performance tools you can use to measure and evaluate server performance.
  - Improving partitioned server performance and capacity
    You use the same set of tools to monitor partitioned servers as you use to monitor individual servers. However, remember that a partitioned server can use a large number of system resources, denying those resources to other partitioned servers on the same computer.
  - Improving Agent Manager performance
    The Agent Manager controls when agents run on a server. Every time an agent runs, it uses server resources. To control when scheduled and event-triggered agents run, you specify settings in the Server document and in the NOTES.INI file. Customizing when agents run may conserve server resources, but it may also delay when agents run.
  - Updating the design of an enabled agent
    Design update helps preserve agents in a database whose design is being updated.
  - Improving server performance using the configuration collector
    The Domino® configuration collector provides snapshots of how the Domino server is configured. You can use that configuration information to analyze recent changes made to the server's configuration that have impacted server performance.
  - Improving database and Domino® Directory performance
    By default, the Domino® Directory uses two database performance properties -- Document table bitmap optimization and Don't maintain unread marks -- to improve performance. The following NOTES.INI settings can affect database and Domino Directory performance.
  - Tips for tuning mail performance
    You can modify settings on the Configuration Settings document, or change NOTES.INI settings to help improve mail performance.
  - Improving Windows™ server performance
    In general, use the default settings for your Microsoft™ Windows™ server. However, there are some measures you can take which may result in performance improvements.
  - Improving UNIX™ server performance
    Methods of improving UNIX™ server performance include adjusting disk and memory requirements and disk i/o tuning, and employing console and database logging.
- Improving Web server performance
  After you set up the Domino® Web server and make sure that it runs properly, check the server's performance and response time.
- Improving mail performance
  Domino® includes features that improve efficiency in specific environments, but these features may not be switched on by default.
- Setting advanced database properties
  Advanced database properties include performance optimization and compression features, as well as ways to manage usability features such as unread marks and soft deletions.
- Understanding cluster statistics
  Three categories of Domino® cluster statistics help you analyze clusters
- Improving the performance of the Server Health Monitor
  If the Domino® Administration client workstation performs at 100 percent CPU utilization for a long period of time, the Server Health Monitor discards server statistic data to keep up with the workload.

Improving partitioned server performance and capacity

You use the same set of tools to monitor partitioned servers as you use to monitor individual servers. However, remember that a partitioned server can use a large number of system resources, denying those resources to other partitioned servers on the same computer.

For example, the Indexer on one partitioned server may be using a large percentage of the available CPU cycles, causing the other partitioned servers to have a slow response time. Therefore, it is important to look at your operating system's performance monitor as well as the Domino® statistics to determine which partitioned server is using the system resources.

If one partitioned server uses significant system resources, consider moving that server to a different computer. If partitioned servers causes slow disk access, consider moving the Domino® data directories of the partitioned servers to separate disk drives.

Another way to limit access to a server is to limit the number of users who can use a partitioned server at one time. To do this, you can use the Server_MaxUsers setting in the NOTES.INI file. When the server reaches the number of users you specify, Domino® denies additional user requests for access to the server.