sendMethodCacheStatistics() serverExecution;
The sendMethodCacheStatistics method of the Process class requests a target process (the receiver) to send a notification containing statistics about the method cache of the target process.
The target process can be any current process, including the requesting process itself or a process executing on another node.
To retrieve the method cache statistics information and send the notifications, the target process is activated temporarily or interrupted, after which it resumes whatever it was doing.
The sendMethodCacheStatistics method is asynchronous; that is, it does not wait until the information is received. The information is received through notifications sometime after the method is called.
The information in the notification relating to the method cache for the target process is shown in the following table.
| Parameter | Contains … |
|---|---|
| eventType | Process_Method_Cache_Stats_Event global constant |
| target | Process instance of the process that made the request |
| userInfo | Method cache statistics stored within a string value |
The process making the request should register to receive type Process_Method_Cache_Stats_Event notifications on its Process instance, using the beginNotification method defined in the Object class before executing the sendMethodCacheStatistics method, as shown in the following code fragment.
self.beginNotification(process, Process_Method_Cache_Stats_Event,
Response_Continuous, 0);
To determine whether a notification contains method cache statistics, the userNotification method of its Process instance should test whether the value of the eventType parameter is Process_Method_Cache_Stats_Event.
The following is an example of the userInfo output.
OID: 187.2 Process method cache type: Multiple (Separate per process) Cache limit: 524288 Maximum cache size: 524288 Number of methods in cache: 105 Total methods discarded: 2560 Total methods executed: 190586 Total time loading methods into cache (ms): 2237 Cache overruns: 0 String pool limit: 5242880 Maximum string pool size: 173568 Number of Strings in string pool: 234 String pool overruns: 0 Number of cache overruns 0-10% over limit: 0 Number of cache overruns 10-20% over limit: 0 Number of cache overruns 20-30% over limit: 0 Number of cache overruns 30-40% over limit: 0 Number of cache overruns 40-50% over limit: 0 Number of cache overruns 50-60% over limit: 0 Number of cache overruns 60-70% over limit: 0 Number of cache overruns 70-80% over limit: 0 Number of cache overruns 80-90% over limit: 0 Number of cache overruns 90-100% over limit: 0 Number of cache overruns 100%+ over limit: 0 [187.2:1:1]