Performance Opportunity Sweep

Performance Opportunity Sweep

This page ranks source-backed performance opportunities found in the Chernarus source mission. It separates quick low-risk wins from higher-value fixes that are already bundled with security, correctness or gameplay behavior.

Ranked Opportunities

Priority	Opportunity	Source evidence	Why it matters	Implementation shape
P0	PVF dispatcher lookup	Server/Functions/Server_HandlePVF.sqf:14, Client/Functions/Client_HandlePVF.sqf:22, Common/Init/Init_PublicVariables.sqf:43-50	Every PVF dispatch recompiles the sender-chosen function string even though init already compiles CLTFNC* and SRVFNC*. This is also DR-1 security hardening.	Use the PVF dispatch playbook: validated namespace/allowlist lookup, keep Spawn, log rejects.
P1	Hosted server FPS loop sleep/consolidation	Server/GUI/serverFpsGUI.sqf:1-9, Server/Module/serverFPS/monitorServerFPS.sqf:1-7, Server/Init/Init_Server.sqf:577-595	Source Chernarus patched: both publishers now exit immediately when !isDedicated, preserving dedicated 8-second publishing without hosted/listen busy-spin. Vanilla propagation remains pending.	Smoke dedicated RHUD FPS updates and hosted/listen no-spin behavior. See Hosted server FPS loop sleep.
P1	Supply mission command-center scan narrowing	Server/Module/supplyMission/supplyMissionStarted.sqf:25-28	Source Chernarus patched: the 80-meter command-center scan now filters nearestObjects to ["Base_WarfareBUAVterminal"] while preserving the separate 8-meter nearby-player scan. Vanilla propagation remains pending.	Smoke truck/heli delivery at command centers and no-completion near unrelated objects. See Supply mission scan narrowing.
P2	Duplicate Skill_Init and non-idempotent Soldier AI cap	Client/Init/Init_Client.sqf:547, former duplicate :571, Client/Module/Skill/Skill_Init.sqf:39-49	Patched in source Chernarus: client init now runs Skill_Init.sqf once before class default gear selection, then calls WFBE_SK_FNC_Apply without rerunning init. Vanilla propagation remains pending.	Smoke Soldier/non-Soldier caps and respawn skill reapply. See Client skill init idempotency.
P2	Factory queue broadcast churn and soft-lock	Client/Functions/Client_BuildUnit.sqf:167-172, Client/Functions/Client_BuildUnit.sqf:365-369, Client/Functions/Client_BuildUnit.sqf:467-469	Current source still has the random queue token and empty-vehicle counter leak. Public queu broadcasts also remain on queue mutations.	Smoke repeated crewless buys, normal crewed/infantry buys, concurrent buyers and factory-dead cleanup. Broadcast reduction remains a follow-up. See Factory queue cleanup.
P2	WASP marker dialog busy-spin	WASP/global_marking_monitor.sqf:57-73, WASP/global_marking_monitor.sqf:80-81	Current source still has the short display-54 busy wait; patch with a throttled wait and preserve input re-enable behavior.	Smoke map double-click marker naming, Enter prefixing, Escape cleanup and timeout/no-dialog input re-enable. See WASP marker wait cleanup.
P3	Cleaner/restorer wide scans	Server/FSM/cleaners/crater_cleaner.sqf:14-49, Server/FSM/cleaners/droppeditems_cleaner.sqf:14-45, Server/FSM/cleaners/ruins_cleaner.sqf:9-28, Server/FSM/restorers/buildings_restorer.sqf:10-26	These use very wide class-filtered nearestObjects scans, but run on long timers, sleep between per-item work, and already emit PerformanceAudit records.	Do not patch first. Use RPT audit rows to prove actual cost, then consider smaller terrain-aware centers/radii or tracked-object lists.

What Was Read

Source files:

• Missions/[55-2hc]warfarev2_073v48co.chernarus/Server/GUI/serverFpsGUI.sqf
• Missions/[55-2hc]warfarev2_073v48co.chernarus/Server/Module/serverFPS/monitorServerFPS.sqf
• Missions/[55-2hc]warfarev2_073v48co.chernarus/Server/Init/Init_Server.sqf
• Missions/[55-2hc]warfarev2_073v48co.chernarus/Server/Module/supplyMission/supplyMissionStarted.sqf
• Missions/[55-2hc]warfarev2_073v48co.chernarus/WASP/global_marking_monitor.sqf
• Missions/[55-2hc]warfarev2_073v48co.chernarus/Client/Functions/Client_BuildUnit.sqf
• Missions/[55-2hc]warfarev2_073v48co.chernarus/Server/Functions/Server_HandlePVF.sqf
• Missions/[55-2hc]warfarev2_073v48co.chernarus/Client/Functions/Client_HandlePVF.sqf
• Missions/[55-2hc]warfarev2_073v48co.chernarus/Common/Init/Init_PublicVariables.sqf
• Missions/[55-2hc]warfarev2_073v48co.chernarus/Client/FSM/updatetownmarkers.sqf
• Missions/[55-2hc]warfarev2_073v48co.chernarus/Client/FSM/updateteamsmarkers.sqf
• Missions/[55-2hc]warfarev2_073v48co.chernarus/Client/Client_UpdateRHUD.sqf
• Missions/[55-2hc]warfarev2_073v48co.chernarus/Client/Module/Skill/Skill_Init.sqf
• Missions/[55-2hc]warfarev2_073v48co.chernarus/Server/FSM/server_town.sqf
• Missions/[55-2hc]warfarev2_073v48co.chernarus/Server/FSM/server_town_ai.sqf
• Missions/[55-2hc]warfarev2_073v48co.chernarus/Server/FSM/cleaners/*
• Missions/[55-2hc]warfarev2_073v48co.chernarus/Server/FSM/restorers/buildings_restorer.sqf

Wiki/docs:

• AI, headless and performance
• Feature status register
• Hardening roadmap
• Arma 2 OA external reference guide
• agent-hardening-backlog.jsonl

Notes By Area

PVF Dispatch

Init_PublicVariables.sqf:43-50 compiles each listed client/server handler into CLTFNC* / SRVFNC* globals and installs PVEHs. But Server_HandlePVF.sqf:14 and Client_HandlePVF.sqf:22 still do Spawn (Call Compile _script) per incoming message.

This is the most valuable performance-adjacent fix because it removes avoidable runtime compilation and closes the DR-1 arbitrary handler-string trust boundary. Do not treat it as a micro-optimization only; it belongs in the P0 hardening branch.

Validation:

• Source-only: every registered _clientCommandPV and _serverCommandPV resolves to CODE after init.
• Dedicated smoke: one server-bound PVF and one client-bound PVF still work.
• Negative smoke: bogus command string is rejected and logged without executing.

Hosted Server FPS Loops

serverFpsGUI.sqf and monitorServerFPS.sqf both run while {true}. Their only sleep 8 sits inside if (isDedicated). On non-dedicated/hosted server, the branch is skipped and the loop has no sleep.

This is a small, low-risk patch if hosted/listen mode is supported. On dedicated servers, the current behavior is not a CPU spin, but there are still two publishers broadcasting closely related values every 8 seconds.

Validation:

• Hosted/listen source smoke: loop exits or sleeps when !isDedicated.
• Dedicated smoke: both HUD/status consumers still receive server FPS at the expected cadence, or documented consumers are migrated to one shared variable.

Supply Mission Scan

supplyMissionStarted.sqf:37-45 loops while the supply vehicle is alive. Every 3 seconds it scans all object classes within 80 meters and checks each result for Base_WarfareBUAVterminal.

This is patched in source Chernarus by changing the 80-meter command-center scan to ["Base_WarfareBUAVterminal"]. Vanilla propagation remains pending. The code already wanted that class family, and the 8-meter nearby-player scan intentionally remains broad. Arma smoke remains pending.

Validation:

• Source-only: done. Source Chernarus now has one narrowed ["Base_WarfareBUAVterminal"] 80-meter scan and still has the broad 8-meter nearby-player scan.
• Dedicated smoke: supply completion still detects command centers for both sides and PR #1 supply helicopter/truck variants.
• JIP note: completion detection is server-side; cooldown JIP behavior should remain pull-based and unchanged.

Duplicate Skill Initialization

Init_Client.sqf runs Skill_Init.sqf at :547, selects default gear based on WFBE_SK_V_Type, then runs Skill_Init.sqf again at :571 before WFBE_SK_FNC_Apply.

Skill_Init.sqf:49 mutates WFBE_C_PLAYERS_AI_MAX for Soldier class by setting it to ceil (1.5 * current value). Because there is no guard or remembered base value, the double init compounds the cap. With default WFBE_C_PLAYERS_AI_MAX = 16, first init gives 24 and second init gives 36.

This was patched in source Chernarus by removing the second client init call while preserving the later WFBE_SK_FNC_Apply call. It remains propagation and smoke pending for Soldier/non-Soldier caps and respawn reapply.

Validation:

• Source-only: done. Chernarus now runs Skill_Init.sqf once and still calls WFBE_SK_FNC_Apply.
• Local smoke: Soldier sees the intended AI cap; non-Soldier classes keep their normal cap.
• Respawn smoke: Client_PreRespawnHandler.sqf can still call WFBE_SK_FNC_Apply.

Factory Queue

Client_BuildUnit.sqf:167-172 still uses the low-entropy random FIFO token. Queue changes are still broadcast with _building setVariable ["queu", _queu, true] at :172, :191 and :207. Empty vehicle purchases still need local queue-cap cleanup before exiting at :365.

The hardening backlog item factory-queue-cleanups is patch-ready: soft-lock cleanup and token identity are the first pieces, while public queue broadcast reduction remains a separate UI-aware follow-up. Because the queue is visible to clients, do not silently remove network publication without checking UI consumers.

Validation:

• Repeated crewless empty-vehicle purchases do not soft-lock the local queue.
• Two simultaneous buyers cannot collide on the front token.
• Queue UI remains correct with reduced broadcasts.

WASP Marker Dialog

global_marking_monitor.sqf:57-73 still needs a throttled wait for display 54 while preserving input re-enable after display-open or timeout. The same file already used waitUntil {sleep 0.1; !isNull (findDisplay 12)} at :80.

This remains a small local UI cleanup, not a server-wide performance fix. See WASP marker wait cleanup for the patch shape and smoke plan.

Validation:

• Double-clicking the map still opens marker creation and prefixes marker text with player name on Enter.
• Escape still clears handlers.
• Input is always re-enabled, including timeout/no-dialog cases.

Not First-Patch Items

Town And Town-AI Loops

server_town.sqf and server_town_ai.sqf use per-town nearEntities scans, but both already have cooperative per-town sleep 0.05, a sleep 5 between full cycles, and PerformanceAudit records with scan/detected/cycle metrics.

Patch only after RPT evidence shows these rows dominate. Changing detection cadence or class filters risks gameplay behavior: capture, town activation, despawn and patrol behavior depend on those scans.

Client Marker Loops

updatetownmarkers.sqf now caches marker names/text, delays closed-map refreshes, and records skipped text writes. updateteamsmarkers.sqf updates only when map/GPS/Warfare UI is visible, throttles AI leader updates to 1 second, and records marker operations.

These are not first-patch targets. Use PerformanceAudit output before touching cadence.

RHUD

Client_UpdateRHUD.sqf sleeps 1 second, caches display/control state, and avoids redundant text/color writes. It should stay measurement-led.

Cleaner And Restorer Wide Scans

The whole-map cleaner/restorer scripts have wide scans, but they are class-filtered, low cadence and instrumented. Their sleep 0.5 per item intentionally spreads deletion/restoration work. Treat them as audit-first candidates.

Suggested Patch Order

1. PVF dispatcher lookup, because it is both P0 security and performance.
2. Hosted server FPS loop sleep/consolidation, if hosted/listen mode still matters.
3. Completed in source: supply mission scan narrowing is patched; propagation and smoke remain.
4. Factory queue cleanup is patch-ready for counter leak and token identity; current source still needs the code patch, and broadcast reduction remains a later UI-aware follow-up.
5. WASP marker dialog wait cleanup remains an opportunity; code patch and Arma smoke remain.
6. Audit-led cleaner/restorer or marker-loop tuning only after RPT evidence.

Handoff

For Codex:

• Keep this page linked from dashboard/status/context/backlog.
• Avoid scattering performance notes across subsystem pages unless they are implementation-ready.

For Claude:

• Good contradiction checks: prove whether the double Skill_Init call is intentional or historical accident; inspect whether any UI path consumes every broadcast queu update; verify exact class inheritance for Base_WarfareBUAVterminal in OA before a scan-narrowing patch.

For a future code owner:

• Smallest code patch: hosted FPS loop sleep/exit.
• Highest value patch: PVF dispatcher lookup from the existing playbook.
• Completed cleanup packages: Client skill init idempotency, Hosted server FPS loop sleep and Supply mission scan narrowing, smoke pending.

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