mirror of
https://github.com/NousResearch/hermes-agent.git
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eddfecd2ce
A single agent turn can fan out N vision_analyze calls at once — the classic trigger is "analyze every frame of this video", where ffmpeg explodes a clip into dozens of frames and the model calls vision_analyze on each. Every call does a CPU-heavy base64-encode/resize burst AND holds a long-lived LLM stream open. The tool executor runs concurrent tool calls on a per-session ThreadPoolExecutor (_MAX_TOOL_WORKERS=8), and multiple agent sessions share one process (the dashboard runs the agent in-process), so there was no global ceiling. In prod (June 2026) a video-frame fan-out pinned a worker thread at ~100% CPU and starved the shared asyncio event loop that also serves the dashboard's /api/status liveness probe, flapping the instance to UNHEALTHY even though nothing had crashed. Add a process-global threading.BoundedSemaphore that bounds how many vision analyses run concurrently across the whole process, held across the entire analysis (image load + encode + LLM call) in the single _handle_vision_analyze chokepoint (covers both the native fast path and the legacy aux-LLM path). It is a threading semaphore, NOT asyncio: each vision call is dispatched through model_tools._run_async on a per-thread event loop, so an asyncio primitive bound to one loop cannot coordinate across them. The acquire is offloaded via run_in_executor so waiting for a slot never blocks the calling loop. Default: min(host CPUs, 4), floored at 1 — respect the host's concurrency, or lower. Override via auxiliary.vision.max_concurrency (config.yaml) or HERMES_VISION_MAX_CONCURRENCY (env). Values < 1 are ignored so the cap can never be disabled into an unbounded fan-out. Tests: bounded-fan-out regression guard + a control proving it would fail without the cap; resolver tests for host-cpu default, ceiling clamp, low-cpu host, env override, and sub-1 rejection. Pre-existing handler tests updated for the now-async _handle_vision_analyze. Verified via the real registry.dispatch -> _run_async per-thread-loop path (16 concurrent calls, peak bounded to cap). |
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| .. | ||
| acp | ||
| acp_adapter | ||
| agent | ||
| ci | ||
| cli | ||
| computer_use | ||
| cron | ||
| docker | ||
| e2e | ||
| fakes | ||
| fixtures/plugins/example-dashboard/dashboard | ||
| gateway | ||
| hermes_cli | ||
| hermes_state | ||
| honcho_plugin | ||
| integration | ||
| openviking_plugin | ||
| plugins | ||
| providers | ||
| run_agent | ||
| scripts | ||
| skills | ||
| stress | ||
| tools | ||
| tui_gateway | ||
| website | ||
| __init__.py | ||
| conftest.py | ||
| run_interrupt_test.py | ||
| test_account_usage.py | ||
| test_assistant_ui_tap_compat.py | ||
| test_atomic_replace_symlinks.py | ||
| test_base_url_hostname.py | ||
| test_batch_runner_checkpoint.py | ||
| test_bitwarden_secrets.py | ||
| test_cli_file_drop.py | ||
| test_cli_manual_compress.py | ||
| test_cli_skin_integration.py | ||
| test_code_skew.py | ||
| test_ctx_halving_fix.py | ||
| test_dashboard_sidecar_close_on_disconnect.py | ||
| test_delegate_cascade_49148.py | ||
| test_desktop_electron_pin.py | ||
| test_desktop_mac_entitlements.py | ||
| test_dispatch_session_id.py | ||
| test_empty_model_fallback.py | ||
| test_empty_session_hygiene.py | ||
| test_env_loader_secret_sources.py | ||
| test_evidence_store.py | ||
| test_fast_safe_load.py | ||
| test_gateway_streaming_nested_config.py | ||
| test_get_tool_definitions_cache_isolation.py | ||
| test_hermes_bootstrap.py | ||
| test_hermes_constants.py | ||
| test_hermes_home_profile_warning.py | ||
| test_hermes_logging.py | ||
| test_hermes_state.py | ||
| test_hermes_state_compression_locks.py | ||
| test_hermes_state_wal_fallback.py | ||
| test_honcho_client_concurrency.py | ||
| test_honcho_client_config.py | ||
| test_honcho_session_context.py | ||
| test_honcho_startup_fail_open.py | ||
| test_install_lockfile_churn.py | ||
| test_install_no_initial_commit.py | ||
| test_install_ps1_native_stderr_eap.py | ||
| test_install_ps1_python_fallback_venv.py | ||
| test_install_ps1_uv_powershell_host.py | ||
| test_install_sh_browser_install.py | ||
| test_install_sh_install_method_stamp.py | ||
| test_install_sh_node_global_prefix.py | ||
| test_install_sh_pythonpath_sanitization.py | ||
| test_install_sh_root_fhs_uv_python_path.py | ||
| test_install_sh_setup_wizard_tty_probe.py | ||
| test_install_sh_symlink_stomp.py | ||
| test_install_sh_termux_network_prereqs.py | ||
| test_install_unmerged_index.py | ||
| test_ipv4_preference.py | ||
| test_lazy_session_regressions.py | ||
| test_lint_config.py | ||
| test_live_system_guard_self_test.py | ||
| test_mcp_serve.py | ||
| test_mini_swe_runner.py | ||
| test_minimax_model_validation.py | ||
| test_minimax_oauth.py | ||
| test_minisweagent_path.py | ||
| test_model_forces_max_completion_tokens.py | ||
| test_model_picker_scroll.py | ||
| test_model_tools.py | ||
| test_model_tools_async_bridge.py | ||
| test_ollama_num_ctx.py | ||
| test_output_cap_parsing.py | ||
| test_package_json_lazy_deps.py | ||
| test_packaging_metadata.py | ||
| test_plugin_skills.py | ||
| test_plugin_utils.py | ||
| test_process_loop_event_loop_warning.py | ||
| test_project_metadata.py | ||
| test_retry_utils.py | ||
| test_run_tests_parallel.py | ||
| test_sanitize_tool_error.py | ||
| test_setup_temporary_outputs.py | ||
| test_slash_worker_watchdog.py | ||
| test_sql_injection.py | ||
| test_stale_utils_module_import.py | ||
| test_state_db_malformed_repair.py | ||
| test_subprocess_home_isolation.py | ||
| test_termux_all_extra_compat.py | ||
| test_timezone.py | ||
| test_toolset_distributions.py | ||
| test_toolsets.py | ||
| test_trajectory_compressor.py | ||
| test_trajectory_compressor_async.py | ||
| test_transform_llm_output_hook.py | ||
| test_transform_tool_result_hook.py | ||
| test_tui_gateway_loop_noise.py | ||
| test_tui_gateway_queue_on_busy.py | ||
| test_tui_gateway_server.py | ||
| test_tui_gateway_ws.py | ||
| test_tui_mcp_late_refresh.py | ||
| test_utils_truthy_values.py | ||
| test_web_server.py | ||
| test_wheel_locales_e2e.py | ||
| test_windows_subprocess_no_window_flags.py | ||
| test_yaml_indent_consistency_31999.py | ||
| test_yuanbao_integration.py | ||
| test_yuanbao_markdown.py | ||
| test_yuanbao_pipeline.py | ||
| test_yuanbao_proto.py | ||
| test_yuanbao_shutdown.py | ||