Red Hat Directory Server 7.1 Performance Tuning and Sizing Guidelines
Sizing and Tuning Recommendations
Sizing Guidelines
Systems
HP Integrity (IA64) Servers
Any HP IA64 architecture with an Intel® Itanium2 Processor or an Intel® Itanium2 dual core Processor and supports HP-UX 11i v2 (Preferably HP-UX 11i v2 September 2004 or later release) can be utilized as an Red Hat Directory Server.
For producing this report, a Montecito-based HP Integrity Server is used. A partition of 2 cells with 4 dual-core processors each is configured within the superdome server SD64B. Within the partition, only one cell is turned on. The exact search throughput with this configuration (8 CPUs @ 1.6GHz, 64GB memory, and one 18 GB disk) can reach 6241.56 operations per second without tuning any Directory Server parameters. All the data generated in this document is based on this specific hardware configuration.
CPUs
The Red Hat Directory Server for HP-UX will utilize multiple processors. When number of processors increases, the performance gets better (see graph below). Under the performance test environment, changing the test machine configuration from 1 processor core (2 CPUs) to 4 processor cores (8 CPUs) can increase the performance throughput about 155%. When configured correctly, the Red Hat Directory Server will generally reach the CPU limit before it reaches other constrains such as disk or networking I/O. For performance measurement based on different number of CPUs, please see Table 1