System and method for profiling code on symmetric multiprocessor

Details System and method for profiling code on symmetric multiprocessor System and method for profiling code on symmetric multiprocessor

1995-11-28

1998-11-17

Voeltz, Emanuel Todd

G06F 945

Patent

active

058389768

ABSTRACT:
A profiler that accurately measures performance metrics for all threads executing a process on a SMP computer system. The profiler uses dynamic instrumentation to cause threads to sample performance metrics before and after certain code regions. In addition, the profiler uses extensions to a parallel support layer to register a parent thread with its child threads. Each thread stores the measured performance metric, or delta, in a memory cell or cells corresponding to its region and its parent region. When the process is complete, the profiler scans through the memory storage areas and sums the deltas for each particular level of code. Then, the results may be analyzed at the thread or process level. In this manner, the profiler can be adapted to work with any process executing on the computer system.

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patent: 5404529 (1995-04-01), Chernikoff et al.
patent: 5465258 (1995-11-01), Adams
International Search Report, App. No. EP 96 30 8586, Mar. 6, 1997.
"Experience with a Performance Analyzer for Multithreaded Applications," Gilbert J. Hansen, Charles A. Linthicum, Gary Brooks, Convex Computer Corporation, IEEE Supercomputing '90 Proceedings, pp. 124-131.
"Mtool: An Integrated System for Performance Debugging Shared Memory Multiprocessor Applications," Aaron J. Goldberg and John L. Hennessy, IEEE, vol. 4, No. 1, Jan. 1993, pp.28-40.

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