A method, system, and computer-usable medium for supporting debugging of host channel adapters in a logical partitioning environment. In a preferred embodiment of the present invention, a hypervisor acquires control of a trace facility and sets trace parameters for the host channel adapter. In response to determining a trace event that matches said trace parameter has been triggered, the hypervisor retrieves trace information from a buffer. In response to determining the buffer does not include ...

A method, apparatus, and computer instructions for preserving trace data in a logical partitioned data processing system. A call is received from a partition in a plurality of partitions to register a buffer in the partition for the trace data. The call includes a pointer to the buffer. The buffer is associated with a trace routine in platform firmware. The trace routine stores the trace data for calls made by the partition to the platform firmware in the buffer.

A technique for problem determination in a distributed application is provided. Testing results of the application are first obtained through execution of test cases of a test group in the application. The testing of the application is then adaptively refined when the testing results have one or more failures, to expose problems that caused the one or more failures.

Input processing limitations may be solved by placing two units in parallel, with each unit recording some portion of the incoming data. This requires the generation of simultaneous actions across units operating in parallel, with both the data recording and user command execution happening at the same point in the trace data stream.

A microprocessor a microprocessor includes: a processor module executing an instruction to generate trace information including the information of the kind and the length of the instruction; an application processing circuit operating in cooperation with the processor module to process a specific application; an address calculating circuit calculating an execution address for executing the instruction based on the information of the instruction length; a data obtaining circuit obtaining data fro...

A method in which data is stored or transferred together with an information message on the basis of which it can be determined in which order, at which time, and/or during which time span, the data concerned has been acquired, stored or transferred.

A method, apparatus, system, and signal-bearing medium that, in an embodiment, divide transactions performed by a program into groups, save data regarding duration times of the transactions in response to trace statements in the program, and determine a reliability of the groups of transactions based on the duration times and a number of failures of the transactions in the groups. The duration times are based on differences between start times and end times of the transactions, excluding differe...

An apparatus and system are disclosed for adjusting trace data granularity. An initialization module sets a base granularity for trace data recorded for a component. A registration module registers a condition counter comprising a condition set. The threshold module sets a count threshold for the condition counter. An increment module counts each instance of the condition set. An adjustment module adjusts the granularity of trace data stored for the component to a modified granularity if the con...

A method and apparatus for capturing and logging activities of a state machine prior to error. The state machine receives a packet and processes the packet. A state machine monitor is provided for each state machine. The state machine monitor logs activities of its associated state machine in a trace buffer when the state machine changes its state. The changes of the states in the state machine are traced to create a record in the trace buffer. Optionally, a snooper may be provided to determine ...

A system and method for recording, storing, transferring and viewing trace data from a processor with an embedded trace macrocell. The system provides for compression of repetitive trace records using an algorithm which identifies compressible trace record streams, creates a highly compressed processed trace record stream and stores the processed trace record stream in trace RAM. Thereafter, the processed trace record stream may be transferred to a host computer, expanded and displayed or printe...