The Performance console .NET CLR Security category includes counters that provide information about the security checks that the common language runtime performs for an application. The following table describes these performance counters.
| Performance counter | Description |
| # Link Time Checks | Displays the total number of link-time code access security checks since the application started. Link-time code access security checks are performed when a caller demands a particular permission at just-in-time (JIT) compile time. A link-time check is performed once per caller. This count is not indicative of serious performance issues; it is merely indicative of the security system activity. |
| % Time in RT checks | Displays the percentage of elapsed time spent performing runtime code access security checks since the last sample. This counter is updated at the end of a .NET Framework security check. It is not an average; it represents the last observed value. |
| % Time Sig Authenticating | Reserved for future use. |
| Stack Walk Depth | Displays the depth of the stack during that last runtime code access security check. Runtime code access security checks are performed by walking the stack. This counter is not an average; it displays only the last observed value. |
| Total Runtime Checks | Displays the total number of runtime code access security checks performed since the application started. Runtime code access security checks are performed when a caller demands a particular permission. The runtime check is made on every call by the caller and examines the current thread stack of the caller. When used with the Stack Walk Depth counter, this counter indicates the performance penalty that occurs for security checks. |
See Also
Performance Counters | Runtime Profiling | Security Policy Model