Scheduling software thread execution

A computer program product for scheduling execution of software threads, the computer program product comprising:

• a computer readable storage media;
• first program instructions to execute a first software thread together with a second software thread as a first software thread pair;
• second program instructions to store a first content of at least one performance counter, wherein the first content of said at least one performance counter resulted from executing the first software pair together;
• third program instructions to execute the first software thread together with a third software thread as a second software thread pair;
• fourth program instructions to store a second content of said at least one performance counter, wherein the second content of said at least one performance counter resulted from executing the second software thread pair;
• fifth program instructions to identify a most efficient software thread pair based on whether the first software thread pair or the second software thread pair executed more efficiently, as determined by the first content and the second content of said at least one performance counter;
• sixth program instructions to receive a request to re-execute the first software thread;
• and
• seventh program instructions to selectively match the first software thread with either the second software thread or the third software thread for execution based on whether the first software thread pair or the second software thread pair has been identified to execute more efficiently based on the first content and the second content of said at least one performance counter;
• and wherein
• the first, second, third, fourth, fifth, sixth, and seventh program instructions are stored on the computer readable storage media.

A computer system comprising:

• a processor, a computer readable memory, and a computer readable storage media;
• first program instructions to execute a first software thread together with a second software thread as a first software thread pair;
• second program instructions to store a first content of at least one performance counter, wherein the first content of said at least one performance counter resulted from executing the first software pair together;
• third program instructions to execute the first software thread together with a third software thread as a second software thread pair;
• fourth program instructions to store a second content of said at least one performance counter, wherein the second content of said at least one performance counter resulted from executing the second software thread pair;
• fifth program instructions to identify a most efficient software thread pair based on whether the first software thread pair or the second software thread pair executed more efficiently, as determined by the first content and the second content of said at least one performance counter;
• sixth program instructions to receive a request to re-execute the first software thread;
• and
• seventh program instructions to selectively match the first software thread with either the second software thread or the third software thread for execution based on whether the first software thread pair or the second software thread pair has been identified to execute more efficiently based on the first content and the second content of said at least one performance counter;
• and wherein
• the first, second, third, fourth, fifth, sixth, and seventh program instructions are stored on the computer readable storage media for execution by the processor via the computer readable memory.