International Business Machines Corporation

David J Crighton

Kirstine F L Clapperton

Rosanna M Lickorish

Jack S Baines

Martin R Naish

David Robert Coles

Stuart J Reece

Alasdair John Paton

Paul J Lacy

A method, system and computer program product. A production container executes computer software in the production container. A debug container that is a replica of the production container executes in the debug container computer software corresponding to the computer software in the production container. A gateway through which (i) an outbound request from the computer software executing in the production container is sent to a remote server and (ii) inbound responses to the outbound request are received from the remote server. A data store receives the outbound request together with the inbound responses via an indirect path from the gateway to the data store. The indirect path is routed through at least one intervening connection between the gateway and the data store.

Providing debug information on production containers using debug containers

A method and system for providing debug information associated with computer software executing in a production container that is replicated as a debug container. The computer software is executed in the production container and corresponding computer software is executed in the debug container. Requests are processed via: a gateway sending each request to the computer software executing in the production container, the gateway replicating each request sent to the computer software executing in the production container, the gateway sending each replicated request to the corresponding computer software executing in the debug container, the computer software executing in the production container executing the requests received from the debug container, the corresponding computer software executing in the debug container executing the replicated requests received from the debug container. The computer software executing in the production container is debugged, using the debug information generated by the computer software executing in the debug container.

Concepts for logging and retrieving diagnostic information relating to a computer system that implements a runtime stack when executing a program are presented. One example comprises, determining a depth value, the depth value being configured to identify a level of diagnostic tracing for the runtime stack. For each stack frame of the runtime stack: the depth value is compared with a counter value associated with the stack frame, and data is then retrieved from the stack frame based on the comparison result.

Obtaining diagnostic information

A method for message handling in a work dispatcher computer system that includes a client computer, a dispatch queue and processing nodes. A total time is a sum of a first time value (an estimate of time that a message received from the client computer spends in a dispatch queue, based on an average time that N individual messages previously spent in the dispatch queue) and a second time value (an estimate of a minimum or average time for the message to be processed by the processing nodes). In response to determining that N s at least a specified threshold, it is ascertained whether a defined timeout period is not less than a specified threshold percent of the total time. If so, the message is sent to the dispatch queue and then to one of the processing nodes. If not, a timeout error indication is sent to the client computer.

Timeout processing for messages

A method and associated system for providing debug information associated with computer software executing in a production container. The production container is replicated as a debug container. The computer software is executed in the production container and the debug container. Executing the computer software includes replicating requests sent to the computer software executing in the production container to the computer software executing in the debug container. Requests from the computer software executing in the production container are stored together with any responses to the stored requests. Debug information generated by the computer software executing in the debug container is stored.

A method and system for message handling in a work dispatcher system that includes a client and one or more processing nodes. A message is received from the client. A total system period for the message to pass through the work dispatcher system is determined. A timeout error indication is sent to the client if a timeout period is determined to be smaller than the total system period.

A mechanism is provided for identifying an inter-relationship between a first process and the second process of a computer system. A correlation is detected between the first process and the second process based on a timing of the first process and the second process accessing a system resource of the computer system. An inter-relationship is then identified between the first process and the second process based on the detected correlation between the first process and the second process.

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Southampton, United Kingdom

David J Crighton