Tracy Memory Profiling for Kit-Based Applications

Capture per-allocation CPU and GPU memory data in Tracy. Prerequisite: Tracy capture setup (see profiling skill), install-profilers for binaries.

Step 1: Environment Variables (Linux, required)

The omni.cpumemorytracking extension uses LD_PRELOAD to intercept malloc/free. Without it, Kit logs Failed to load library: 'liballocwrapper.so' and zero memory events are captured.

# Path varies by packman version
export LD_PRELOAD=~/.cache/packman/chk/allocmemwrapper/<version>/liballocwrapper.so
export TRACY_USE_LIB_UNWIND_FOR_BT=1   # libunwind-based backtrace
export TRACY_NO_SYS_TRACE=1            # reduce overhead
export TRACY_PORT="${TRACY_PORT:-8086}" # use 8087 for Isaac Sim 6.0+ when needed

Step 2: Kit Flags