# NousResearch/hermes-agent · Use psutil for PID lookup instead of forking ps

## Open now

- Nothing open on GitHub.

These items address a performance issue on macOS where the gateway identity check unnecessarily forks a ps process to read a PID's command line, despite psutil being available and significantly faster. The proposed fix reads the command line via psutil first.

## TL;DR

- 3 member(s): 0 open issue(s), 1 closed issue(s), 0 open PR(s), 1 merged PR(s), 1 PR(s) closed without merging.
- A fix was merged to main in PR #117562. Verify it addresses your case.
- **Recommended:** read PR #117562 (and any competing PRs below) before filing. Confirm the merged change covers your symptom.

## Maintainer resolution verdict

- Internal-tracker verdict over this cluster's issue members: `resolved` · deciding PR(s): `pr-117562`. This is distinct from the fix status above. Weigh it yourself.

## How this cluster was grouped

- Link evidence (`STRUCTURAL_SPANNING`): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.
- Pairwise link density `0.67`: the share of member pairs that carry a link, counting a structural link in full and a relevance-only link at 0.36. `1.00` means every pair is linked.

## Closed / duplicate issues

- #117270: \[Perf\]: the gateway-identity check forks \`ps\` on macOS when psutil (a core dependency) answers 190x faster

## Prior & competing PRs

- **#117562: perf(gateway): the identity check reads a PID's command line with psutil before forking ps (#117270, salvage #117271)**. merged to main · fix tier `verified`
  - maintainer direction: category `merged`
  - files: `gateway/status.py`, `tests/gateway/test_process_cmdline_source.py`
- **#117271: perf(gateway): read a PID's command line with psutil before forking ps**. closed without merge
  - maintainer direction: category `merged_via`; implication `superseded`; refs `b93d68e424`, `#117562`

## Fix status

- Merged to main in PR #117562 (cited above). No release data is tracked. Verify downstream.
- Fix last verified (merged) `2026-09-20`.