How adding or changing the security policies of a system will affect the overall system performance. Note that most performance-related questions (incl. config setting of common crypto modules) are better suited for SuperUser, or ServerFault.
Performance refers to the runtime, CPU load, memory footprint, or database size or a system.
Security.StackExchange is happy to answer architecture-type questions about performance of security modules. For example, the following questions would be on-topic here:
- How will enabling HTTPS affect my CPU load?
- My database is getting large, does PCI allow deletion of data after a certain time?
Questions about configuring or measuring performance of specific technologies would be better suited for SuperUser or ServerFaullt. For example, the following would be off-topic here, but on-topic there:
- How to reduce the network latency in LDAPS?