Profile-guided optimization across process boundaries

Authors:
Erik Johansson;Sven-Olof Nyström
Affiliations:
Computing Science, Department of Information Technology, Uppsala University, Box 311,751 05 Uppsala, Sweden;Computing Science, Department of Information Technology, Uppsala University, Box 311,751 05 Uppsala, Sweden
Venue:
DYNAMO '00 Proceedings of the ACM SIGPLAN workshop on Dynamic and adaptive compilation and optimization
Year:
2000

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Abstract

We describe a profile-driven compiler optimization technique for inter-process optimization, which dynamically inlines the effects of sending messages. Profiling is used to find optimization opportunities, and to dynamically trigger recompilation and optimization at run-time. We apply the optimization technique on the concurrent programming language ERLANG, letting recompilation take place in a separate ERLANG process, and taking advantage of the facilities provided by ERLANG to dynamically replace code at run-time. We have implemented a prototype inter-process profiler and optimizer, that can handle small programs. Measurements on synthetic benchmarks show encouraging speedups of up to 1.8 times.