Optimization for application runtime monitoring

A system for monitoring an application at runtime, comprising:

• one or more computer processors, one or more computer-readable storage media, and program instructions stored on one or more of the computer-readable storage media for execution by at least one of the one or more processors, the program instructions comprising:
• building up a calling relationship graph for a system method called at runtime, by checking a stack trace generated when the application is running, wherein an application method of the application that directly or indirectly calls the system method is represented as a node in the calling relationship graph, wherein in the stack trace a system method or a system class is filtered out by matching name of the class or the method in the stack trace with a list of application classes whose information is recorded while being loaded;
• determining one or more target nodes in the calling relationship graph by analyzing the structure of the calling relationship graph;
• inserting callback methods into the application method of the application corresponding to the one or more target nodes only in a calling side;
• and
• monitoring the application at runtime by using said callback methods.

A computer program product for monitoring an application at runtime, the computer program product comprising:

• one or more non-transitory computer-readable storage media and program instructions stored on the one or more non-transitory computer-readable storage media, the program instructions comprising:
• building up a calling relationship graph for a system method called at runtime, by checking a stack trace generated when the application is running, wherein an application method of the application that directly or indirectly calls the system method is represented as a node in the calling relationship graph, wherein in the stack trace a system method or a system class is filtered out by matching name of the class or the method in the stack trace with a list of application classes whose information is recorded while being loaded;
• determining one or more target nodes in the calling relationship graph by analyzing the structure of the calling relationship graph;
• inserting callback methods into the application method of the application corresponding to the one or more target nodes only in a calling side;
• and
• monitoring the application at runtime by using said callback methods.