CozNet

CozNet is a distributed causal profiler, inspired by Coz. Made for the final project for CS 2610.

Building

To build CozNet, simply run

make dcuz

Running

CozNet is loaded and ran as a shared library with LD_PRELOAD. Additionally, it requires three configuration variables:

• DCUZ_MODULE: The name of the ELF binary that contains the line of code to profile.
• DCUZ_OFFSET: The offset of the line inside the ELF binary.
• DCUZ_SPEEDUP: A number between 0 and 1 corresponding to how much the line should be sped up by.

The module and offset of a line can all be generated by generate_line_mappings.py. Additionally, running CozNet for every line in a source file is automated by run_dcuz_experiments.py.