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NousResearch/hermes-agent

Fix Windows session lock contention and POSIX probe

Cluster 115578. Data as of

Nothing open on GitHub. Fix merged in #116998 on 20 Sep 2026. Check it covers your case.

The short answer

0open issues
0open PRs
4items grouped
Known?
Yes. 4 related items grouped here, 1 issue already closed.
Fix event
A fix was merged to main in PR #116998. Check it covers your case. No release data is tracked.
Tracker
The maintainers' tracker marks this resolved, deciding PR #116998. That is separate from the fix event.
Still open
Nothing open on GitHub.

These issues and fixes address a Windows-specific bug where a POSIX zombie probe inside the session-registry lock caused ~80ms hold times and lock starvation for pollers with many leases. The fixes skip the POSIX probe on Windows in relevant code paths and adjust lock handling to prevent starvation.

Open issues0

No open issues.

Open PRs0

No open pull requests.

Fixes on record

Merged to main. A stamp counts the issues a fix is linked to.

  • #116998 fix(sessions): Windows pollers no longer starve on the session-registry lock (#115578, salvage #115591)

    merged to main

    files: contributors/emails/hermes-agent@localhost, gateway/status.py, hermes_cli/active_sessions.py, tests/gateway/test_status.py, tests/hermes_cli/test_active_sessions.py

2 PRs closed without merging

From the close comments: merged via another change 1 · partial fix 1

  • #115585 fix(gateway): skip the POSIX zombie status probe on Windows in _pid_exists · partial fix → #115591, #42126, #108955, #52193
  • #115591 fix(sessions): skip POSIX zombie probe on Windows; prune snapshot after lock release · merged via another change → 3721657, #116998, #115578, #115591
Closed issues · 1
  • Closed#115578[Bug]: Windows active-session registry lock is held ~80ms (POSIX zombie probe inside lock) and LK_LOCK is unfair — every poller starves at >=7 leases
How this cluster was grouped
  • Link evidence (structural links throughout): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.
  • Pairwise link density 0.50: the share of item 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.

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At a glance

Merged PRs
#116998
Closed issues
1
Attempts
2 PRs closed without merging
Fix link checked
20 Sep 2026

For your agent

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cluster/115578.json
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