IBM BPM, V8.0.1, All platforms > Measuring and improving business processes > Monitoring > Enabling and configuring service component monitoring > Monitoring performance > Application Response Measurement statistics for the Service Component Architecture

Deferred response with synchronous implementation

You can obtain Application Response Measurement (ARM) statistics with a synchronous invocation of the request. The returned result is sent as output to a data store for a synchronous implementation.


Parameters

Event monitoring for SCA components includes the event points that are shown in black , while the event points shown in blue are used only to calculate and fire PMI/ARM statistics.

In Table 1 and Figure 1, the "current" ARM transaction (denoted as X 1) is created when the calling service component was invoked for the first time.

If the caller is not a service component, the current ARM transaction is used, or a new one is created. If it is not the starting transaction, it has a parent, as represented in the following table and diagram with the notation X n.X n+1. The notation is used to show the transaction lineage. Every SCA invocation starts a new transaction, which is parented by the current transaction of the caller. You can create new transactions and you can access the current transaction, but you cannot modify the SCA transaction lineage.

Invocation of request and return result
Type Statistics Formula ARM Transaction
Common TotalResponseTime t 3 - t 0 X 0.X 1
RequestDeliveryTime t' 0 - t 0 X 1.X 2
ResponseDeliveryTime N/A N/A
GoodRequests Count EXIT X 1.X 2
BadRequests Count FAILURE
ResponseTime t' 1 - t' 0
Reference A GoodRefRequest Count EXIT X 1.X 2
BadRefRequests Count FAILURE
RefResponseTime t 1 - t 0

Figure 1. Graphic representation of a deferred response with synchronous implementation

Invocation of output to data source
Type Statistics Formula ARM Transaction
Reference B GoodRetrieveResult Count EXIT X 1.X 2
BadRetrieveResult Count FAILURE
ResultRetrieveResponseTime Σ t 3 – t 2
ResultRetrieveWaitTime Σ timeout

Application Response Measurement statistics for the Service Component Architecture