Abstract: Software is traced using Extensible Markup Language (XML) messages. A trace command, which includes one or more specified fields to be traced and a trace output file location, is defined. A determination is made as to whether the trace command is for a full trace or a differential trace, where the full trace traces all the one or more specified fields, and the differential trace traces specified fields only in response to the specified fields having a value that has changed during processing. The trace command is added to an XML input message for propagation through one or more products. Trace data is collected from the full trace or the differential trace for defined fields at each product, and then stored at the trace output file location.

Abstract: A messaging system comprises a plurality of connected components and including a schema defining fields for messages, at least one field defined as non-essential. A mechanism for operating the messaging system comprises the steps of collecting one or more performance metrics for one or more components of the messaging system, determining that at least one performance metric has crossed a predetermined threshold, informing one or more components of the messaging system that a surge in workload has occurred, and the informed components removing non-essential fields from transmitted messages and/or not processing non-essential fields from received messages.

Abstract: A computer-implemented method of parsing a message comprising a sequence of data fields, the method comprising evaluating program code for processing the parsed message to identify a first set of data fields of the message that are referenced in said program code; identifying the boundaries of the data fields in a schema defining the format of said message; identifying a second set of data fields in said schema related to the first set of data fields by reference, said second set further including the first set; and sequentially parsing the message using the identified data field boundaries, wherein said parsing step comprises skipping data fields in said sequence that precede the first data field belonging to the second set. A computer program product comprising program code for implementing this method and a data processing system adapted to implement this method are also disclosed.

Abstract: A computer accesses a stack data and a source code of a program. The computer searches for a first change made to the program, wherein the first change is one of a change to a method of the program, a change to a class of the program, a change to a method that is invoked by the program, or a change to a class containing a method that is invoked by the program. The computer identifies the first change that was made to the program and determines the probability that the identified first change caused one or both of an error and a regression. The computer generates a ranked list of identified changes based, at least in part, on the probability that the identified first change caused one or both of an error and a regression.

Abstract: Event processing is prioritized based on system workload. A time constraint attribute is defined in an event rule. The event rule uses one or more events. An event processing system is monitored to determine when the system is under a predefined level of stress. If the system is determined to be under the predefined level of stress, the time constraint attribute in the event rule is used to establish when the processing of a received event used in an event rule must be carried out.

Abstract: A system for workflow placement in a computer system wherein the performance of a system processing a workflow is monitored against one or more performance measures. One or more logic elements from the workflow are delegated for subsequent processing to other systems in the computer system in response to one or more of the one or more performance measures being within a predetermined range.

Abstract: A method for event processing within a complex event processing environment. The method includes monitoring a plurality of event processing paths of the complex event processing environment. The method includes determining that utilization of server resources in the complex event processing environment has exceeded a threshold value and identifying one or more event processing paths responsible for the high utilization of server resources. The method includes determining that the one or more event processing paths contain an independent rule, wherein an independent rule includes a rule or a rule subset where data for processing of the rule or rule subset is accessible by a client computing device. The method then includes determining the client computing device can perform processing of the independent rule and transferring processing of the independent rule to the client computing device.

Abstract: A computer captures a thread state data of a first program. The computer generates a second program by applying a first program patch to the first program. The computer inserts additional code into a source code of the second program. The computer executes a first performance test using the second program and the inserted additional code. The computer monitors a first status of the second program and the inserted additional code that are under the first performance test. The computer determines a degree that a first deadlock state was prevented during the first performance test. The computer generates a first message based, at least in part, on the determined degree that the first deadlock state was prevented during the first performance test.

Abstract: A computer accesses a stack data and a source code of a program. The computer searches for a first change made to the program, wherein the first change is one of a change to a method of the program, a change to a class of the program, a change to a method that is invoked by the program, or a change to a class containing a method that is invoked by the program. The computer identifies the first change that was made to the program and determines the probability that the identified first change caused one or both of an error and a regression. The computer generates a ranked list of identified changes based, at least in part, on the probability that the identified first change caused one or both of an error and a regression.

Abstract: Embodiments relate to controlling persisting of data to disk for use with a messaging system including an application operable for generating and sending a message to a destination. An aspect is an apparatus, which includes a comparator operable to determine whether the message includes common data, and an extractor, responsive to a determination that the message includes common data, configured to extract the common data and non-common data from the message. The apparatus also includes a persistor operable to determine whether the common data have already been persisted to disk. The persistor is operable, in response to a determination that the common data have not already been persisted to disk, to separately persist the common data and the non-common data to disk. The persistor is operable, in response to a determination that the common data have already been persisted to disk, to persist the non-common data to disk.

Abstract: Processing events for use with a complex event processing system that includes a server computer system and a client application executable on a client computer system. The processing includes analysing content of the events and assigning a plurality of attributes to associated event processing logic. A first attribute is associated with event processing logic that is operable to be applied at the client computer system and a second attribute is associated with event processing logic that is operable to be applied at a server computer system. The processing also includes using, in response to receiving a first event, assigned attributes to determine whether event processing logic associated with the first event is operable to be applied at the client computer system. The first event is forwarded to the server computer system based on determining that the event processing logic associated with the first event is not operable to be applied at the client computer system.

Abstract: A method and system are provided for providing event-processing rules in an event-processing environment. The method includes providing at least one generalised event-processing rule to a customer, receiving customer input of rule customization to produce a customized rule, and storing the customized rule in Polish notation for processing using stack-based processing. The method also includes receiving notification of an event for a customer, retrieving a customized rule relating to the customer, and processing the customized rule using stack-based processing.

Abstract: An exemplary embodiment of this disclosure is a method for operating a data processing system, where the data processing system includes a service bus connected between a client and a server. The service bus includes one or more applications configured to mediate message flow between the client and the server. The method includes receiving a message from the client at the service bus, and mediating the message at a message-mediating application of the service bus. The mediation includes adding a header to the message, the header defining a source and a predetermined condition under which a target can respond directly to the source. The source is either the client or an application of the service bus, and the target is either an application of the service bus or the server.