# NousResearch/hermes-agent · Raise LSP subprocess StreamReader buffer limit

## Open now

- Nothing open on GitHub.

These members address a bug where asyncio's default 64 KiB StreamReader limit truncates long LSP subprocess output lines, with fixes raising the limit to 16 MiB. A related streaming fix is bundled in one PR alongside other minor stream-handling changes.

## 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 #121511. Verify it addresses your case.
- **Recommended:** read PR #121511 (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-121511`. 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evidence (`STRUCTURAL_SPANNING`): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.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

- #31417: \[Bug\] asyncio subprocess StreamReader default 64 KiB limit truncates long output lines

## Prior & competing PRs

- **#121511: fix(streaming): Kimi gzip-only streams, 16 MiB LSP stderr lines, serving provider in stream-drop logs**. merged to main · fix tier `verified`
  - maintainer direction: category `merged`
  - files: `agent/api_request_hooks.py`, `agent/chat_completion_helpers.py`, `agent/lsp/client.py`, `agent/stream_diag.py`, `contributors/emails/kouyichi@users.noreply.github.com`, `plugins/model-providers/kimi-coding/__init__.py`, `tests/agent/lsp/_mock_lsp_server.py`, `tests/agent/lsp/test_client_e2e.py`, `tests/agent/test_stream_serving_provider.py`, `tests/plugins/model_providers/test_kimi_profile.py`
- **#31519: fix(lsp): raise LSP subprocess StreamReader limit to 16 MiB**. closed without merge
  - maintainer direction: category `merged_via`; implication `superseded`; refs `56096cb26d`, `#121511`, `#31417`

## Fix status

- Merged to main in PR #121511 (cited above). No release data is tracked. Verify downstream.
- Fix last verified (merged) `2026-09-24`.
- Subsystem: `agent/lsp`