During October 2024, Leftwo developed a configurable performance-tuning feature for image uploads in the oxidecomputer/oxide.rs repository. Focusing on CLI development and system programming, Leftwo introduced a parallelism parameter to the CmdDiskImport command, allowing users to adjust the number of threads used during image uploads. This enhancement, implemented in Rust, preserved the default parallelism value to maintain stability while enabling throughput optimization for varying workloads. The work demonstrated a thoughtful approach to backward compatibility and user configurability, addressing the need for flexible performance tuning without compromising existing behavior. The feature was delivered as a single, well-scoped addition during the month.