WebSphere Enterprise Service Bus for z/OS, Version 6.2.0 Operating Systems: z/OS


Service Component Architecture-specific statistics

This section tells you about Service Component Architecture-specific statistics in WebSphere® Enterprise Service Bus.

The Service Component Architecture (SCA) statistics shown in the following tables are — in a very simplified manner — time and count measurements of caller invocations to the SCA layer, and the results returned from a service. There are, in fact, a number of service invocation patterns that vary between synchronous and asynchronous implementations of deferred responses, results retrievals, callbacks, and one-way invocations. All of these have traits between the caller and a service, or in some cases a datasource, with the SCA layer interposed in between.
Table 1. Common. These statistics are common to all service invocation patterns.
Statistic name Type Description
GoodRequests Counter Number of server invocations not raising exceptions.
BadRequests Counter Number of server invocations raising exceptions.
ResponseTime Timer Duration measured on the server side between the reception of a request and computing the result.
TotalResponseTime Timer Duration measured on the caller side, from the time a caller requests a service to the time when the result is available for the caller. Does not include the processing of the result by the caller.
RequestDeliveryTime Timer Duration measured on the caller side, from the time a caller requests a service to the time when the request is handed over to the implementation on the server side. In a distributed environment the quality of this measurement depends on the quality of synchronization of system clocks.
ResponseDeliveryTime Timer The time required to make the result available to the client. In the case of deferred response this time doesn't include the result retrieve time. In a distributed environment the quality of this measurement depends on the quality of synchronization of system clocks.
Table 2. Reference. These statistics occur when a caller makes an invocation to the SCA layer or a datasource, without a response from the service.
Statistic name Type Description
GoodRefRequests Counter Number of caller invocations to the SCA layer that do not raise exceptions.
BadRefRequests Counter Number of caller invocations to the SCA layer that do raise exceptions.
RefResponseTime Timer Duration measured on the caller side, from the time the caller makes a request to the SCA layer and the time when the results of that call are returned to the caller.
BadRetrieveResult Counter Number of caller invocations to a datasource that do raise exceptions.
GoodRetrieveResult Counter Number of caller invocations to a datasource that do not raise exceptions.
RetrieveResultResponseTime Timer Duration measured on the caller side, from the time the caller makes a request to the datasource and the time when the datasource response is returned to the caller.
RetrieveResultWaitTime Timer Duration measured on the caller side if a timeout occurs.
Table 3. Target. These statistics occur when there are requests that originate between the service and the SCA or a datasource.
Statistic name Type Description
GoodTargetSubmit Counter Number of SCA invocations to the service that do not raise exceptions.
BadTargetSubmit Counter Number of SCA invocations to the service that do raise exceptions.
TargetSubmitTime Timer Duration measured on the server side, from the time the SCA makes a request to the service and the time when the results of that call are returned to the SCA.
GoodResultSubmit Counter Number of service invocations to the datasource that do not raise exceptions.
BadResultSubmit Counter Number of service invocations to the datasource that do raise exceptions.
ResultSubmitTime Timer Duration measured on the server side, from the time the service makes a request to the datasource and the time when the results of are returned to the service.
Table 4. Callback. These statistics occur when a callback (a "sibling" of the original call) is present on the caller.
Statistic name Type Description
GoodCB Counter Number of SCA invocations to the callback that do not raise exceptions.
BadCB Counter Number of SCA invocations to the callback that do raise exceptions.
CBTime Timer Duration from the time the SCA makes a request to the callback, and the time when the results from the callback are returned to the SCA.
GoodCBSubmit Counter Number of invocations from the service to the SCA handling the callback that do not raise exceptions.
BadCBSubmit Counter Number of invocations from the service to the SCA handling the callback that do raise exceptions.
CBSubmitTime Timer Duration from the time the service makes a request to the SCA handling the callback, and the time when the results from the SCA to the service.

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Timestamp icon Last updated: 21 June 2010


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