Analysis and visualization of concurrent thread execution on processor cores

A computer readable storage medium, which does not include a transitory propagating signal, storing computer executable instructions for controlling a computing device to perform a method comprising:

• receiving data relating to a plurality of logical cores in a multiple core processor, the logical cores each having a corresponding memory;
• receiving a plurality of context switch records generated from recording context switches developed from executing a plurality of threads in a concurrent application on the plurality of logical cores during a course of time;
• generating a plurality of thread execution segments from the data and the context switch records, wherein each of the thread execution segments associates an instance of an executing thread on a corresponding logical core with respect to the course of time;
• and
• generating a graphical display with the plurality of thread execution segments, the graphical display indicating which thread is executing on which logical core over the course of time for each of the plurality of threads to display thread migration in the concurrent application, the logical cores arranged along an axis of the visualization relative to their distance to each other's memory.

A system comprising:

• a processor;
• a memory device storing instructions executable by the processor to:
• receive data relating to the plurality of logical cores each having a corresponding memory, wherein the data includes data regarding logical cores available to execute a concurrent application and data regarding architecture information of the multiple processor core;
• receive a plurality of context switch records generated from a trace recording context switches and developed from executing a plurality of threads in the concurrent application on the plurality of logical cores during a course of time;
• generate a plurality of thread execution segments from the data and the context switch records, wherein each of the thread execution segments associates an instance of an executing thread on a corresponding logical core with respect to the course of time;
• and
• generate a graphical display with the plurality of thread execution segments, wherein the graphical display lists the plurality of logical cores along an axis according to the data relating to distance to each other's memory with respect to the plurality of logical cores, wherein the course of time is indicated along a time axis, and wherein each of the thread execution segments is assigned a mark and depicted as at least one bar including the mark with relation to the logical cores along the axis and execution time along the time axis to identify thread migration or thread affinity bugs in the concurrent application.