•Access logging enabled to ensure SSL functions correctly
Table 7 shows that the
Table 7: Performance in relation to SSL connection setting (Enabled or Disabled)
SSL Connection | Searches per second |
Enable | 1963.33 |
Disable | 7259.05 |
For all the previous data collections, the “bind once as root” option is selected when running the benchmark test with the rsearch script. It means once an ldap connection is initialized, all the following search operations will use the same connection. In an SSL environment, overhead usually occurs during the connection setup time. To investigate how the extra workload affects the performance, the “bind for every operation” option is selected when running the benchmark test with the ldclt script. This ensures a new connection is created for all search requests.
The rsearch and ldclt scripts are located in the /opt/dirsrv/bin directory on a system installed with HPDS 8.1.
Additional tuning reference
There are several ways to manage the directory server’s performance by limiting the amount of resources the server uses to process client search requests. For example, the size limit attribute, time limit attribute, and so forth can be tuned to limit the resources the server uses. Increasing the checkpoint interval can increase the performance of directory write operations in certain rare conditions. Be cautious when tuning attributes related to the transaction log, because setting these attributes and other configuration attributes inconsistently may cause the directory to be unstable. The “Tuning Directory Server performance” chapter of the
Appendix A: HPDS 8.1 performance test details
Test Environment
Operating system
The
System parameter tuning
All the system parameters on the test machines are tuned as recommended in the “Sizing and tuning overview” section.
General directory server configuration
For all the test data to be comparable, assume the data is collected based on the following directory server configuration (unless specified separately within each data collection section.)
1.Logging: access log: off error log: on audit log: off
2.No referrals
16