Service manual

Sizing for Multiprocessor Systems
94 Sun ONE Directory Server Installation and Tuning Guide • June 2003
Monitoring I/O and Disk Use
Disksshould notbesaturatedundernormaloperatingcircumstances.You mayuse
utilities such as
iostat(1M) on Solaris and other systems to isolate potential I/O
bottlenecks. Refer to Windows help for details on handling I/O bottlenecks on
Windows systems.
Sizing for Multiprocessor Systems
Directory Server software is optimized to scale across multiple processors. In
general, adding processors may increaseoverall search, index maintenance, and
replication performance.
In specific directory deployments, however, you may reach a point of diminishing
returns where adding more processors does not impact performance significantly.
When handling extremely demanding performance requirements for searching,
indexing, and replication, consider load balancing and directory proxy
technologies as part of the solution.
Sizing Network Capacity
Directory Server is a network intensive application. To improve network
availability for a Directory Server instance, equip the system with two or more
network interfaces. Directory Server can support such a hardware configuration,
listening on multiple network interfaces within the same process.
If you intend to cluster directory servers on the same network for load balancing
purposes, ensure the network infrastructure can support the additional load
generated. If you intend to support high update rates for replication in a wide area
network environment, ensure through empirical testing that the network quality
and bandwidth meet your requirements for replication throughput.
Sizing for SSL
By default, support for the Secure Sockets Layer (SSL) protocol is implemented in
software.Using the software-based SSL implementation may have significant
negative impact on Directory Server performance. Running the directory in SSL
mode may require the deployment of several directory replicas to meet overall
performance requirements.