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What the “no free edicts” error actually means
Source-engine servers represent many map and gameplay objects as edicts (entity descriptors). Doors, props, lights, triggers, particles, scripted objects and temporary effects can all consume an edict slot. When the engine needs another slot, ED_Alloc scans for an available entry. If it reaches the configured maximum without finding one, it reports:
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ED_Alloc: no free edictsThe allocator’s counterpart, ED_Free, marks an entity as free so a later allocation can reuse that slot. This is why deleting temporary entities and fixing cleanup code are durable solutions: they return slots to the reusable pool.
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| Figure | What it represents | Source and qualification |
|---|---|---|
| 2,048 | Maximum edict count documented by the TF2 Edict Limiter project | Poggicek’s project documentation, accessed in 2026; no publication year is stated |
| 2,049 total edicts | An example server status immediately before the error | Pingperfect knowledgebase page displaying a 2026 copyright; no separate publication date is stated |
The difference can come from how a tool labels the limit, reserves an index, or reports totals. Use the count shown by your own server and diagnostic tools rather than assuming that either number is a universal limit for every current TF2 build.
Map-authored entities and plugin-created entities compete for the same finite pool. A map with many point_spotlight or func_brush objects can start close to the ceiling. A plugin that creates props, sounds or effects on every round without removing them can slowly consume the remaining slots until a later event triggers the crash.
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First response: preserve evidence before restarting
Restarting the server may make it appear healthy because a fresh map load clears old allocations. Capture evidence before doing that whenever possible. Follow this sequence:
- Save the complete server log. Include the lines before and after
ED_Alloc: no free edicts. Record the map, player count, active plugins and the last major event. - Record when the failure occurs. A crash during map load or immediately after a change map usually points to map-authored entities. A crash at round start, after a boss spawn, or following a custom event suggests a plugin or scripted burst. A count that rises throughout a long session suggests an entity-cleanup leak.
- Reproduce on a staging instance. Use the suspected map with a minimal plugin set. Do not test destructive changes first on a busy public server.
- Change one variable group at a time. If the error disappears with plugins disabled, re-enable them in small groups and repeat the same round or event. This binary-search approach identifies a responsible plugin faster than changing everything at once.
Keep the original log even after the server is working. It lets you compare entity counts and timing after each change.
Measure edict usage with SourceMod diagnostics
The TF2 Edict Limiter project documents two useful SourceMod commands:
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sm_edictcountreports the current number of edicts in use.sm_spewedictsdumps counts grouped by entity classname.
The project’s example output includes classes such as prop_dynamic and ambient_generic. Your output will vary by map, player activity and installed plugins. Run the commands at consistent points so that comparisons are meaningful:
- Run
sm_edictcountimmediately after the map has loaded. - Run it again after players join and after the first round starts.
- Run it after the event that precedes the crash, such as a boss spawn or scripted sequence.
- Use
sm_spewedictsat each point and save the class breakdown with the timestamp and map name.
A single high-count classname is a lead, not proof of a defect. A map may legitimately contain many props, and several plugins may use the same classname. Confirm causality by disabling the suspected map content or plugin and checking whether the count stops rising.
Read the count pattern to isolate the cause
| Observed pattern | Most likely area | Next test |
|---|---|---|
| High count immediately after every load of one map | Map-authored entities | Load a comparable map with the same plugins; inspect and reduce the failing map’s dynamic entities |
| Count starts normal and climbs every round | Plugin or script that does not free temporary entities | Disable event, cosmetic and effect plugins in groups; repeat the same number of rounds |
| Sharp jump during one boss, objective or scripted event | Plugin-created burst or failed cleanup after the event | Run that event with the suspected plugin disabled and compare class counts before and after |
| Failure follows a recent plugin or map update | Regression or changed entity behavior | Roll back that one change on staging and verify with identical settings |
| Different maps fail with the same steadily rising count | Global plugin leak | Start with a minimal plugin set and re-enable by groups |
Compare both absolute usage and the rate of change. A map that uses many edicts but remains stable may be safe; a map or plugin that adds a small number every round can eventually be more dangerous.
Fix map-authored entity pressure
Remove entities that are not essential
If one map consistently loads near the limit, remove unnecessary dynamic entities. The hosting guidance specifically identifies point_spotlight and func_brush as examples of dynamic entities that can occupy slots. Cosmetic props, decorative lighting, redundant brushes and scripted effects are common candidates, but remove only objects you have confirmed are not required for navigation, objectives or collision.
Recompile or replace the map
After editing the entity list, recompile the map when the change affects map source files, or deploy a verified replacement that contains the reduction. Test the result with the full production plugin set because a lower map baseline may expose a separate plugin leak. Keep the original map available for rollback and record which entities were removed.
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Preserve gameplay-critical behavior
- Do not delete objective triggers, spawn points, capture logic or collision brushes merely because they appear in a high-count class.
- Check lighting and visibility after removing spotlights or brush entities.
- Test round transitions, respawns and scripted objectives; an apparently cosmetic entity may be referenced by a plugin.
- Compare the post-load
sm_edictcountwith the original map and verify that it remains stable during several rounds.
Fix plugin and cleanup leaks
Find the plugin with controlled re-enabling
Disable nonessential plugins on staging, load the failing map and run the event that normally precedes the crash. If the count remains stable, re-enable half of the disabled plugins and repeat. Continue splitting the remaining set until one plugin or a small interaction is isolated. Keep the map, player count and test event consistent so the comparison is valid.
Update, replace or disable the offending code
Once identified, check whether an updated build addresses entity cleanup. If no safe update exists, disable the plugin or replace it with one that releases temporary entities. Cosmetic, lighting, prop and scripted-effect plugins deserve particular scrutiny when their objects accumulate without improving core gameplay.
Require cleanup at lifecycle boundaries
Temporary entities should be removed when their effect ends and again at round or map transitions as a safety net. Plugin authors should also handle failed entity creation: code must not assume that an allocation succeeded when the server is close to its ceiling. A failed creation path that continues to reference a nonexistent entity can produce additional errors or leave partial state behind.
Check interactions, not only individual plugins
Two plugins can each clean up their own objects yet still create a burst together during the same event. Test the combined group that is active on the public server, and compare class counts before and after the shared event.
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Restarting and changing maps: useful recovery, not a cure
Changing maps or restarting the server releases stale allocations because the old entity set is discarded. Do this after removing the cause or as an emergency recovery action when the server is already unstable. A restart alone does not reduce the number of entities created on the next load, so the same map or plugin can exhaust the pool again.
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After a restart, capture a baseline count, run several normal rounds and check whether the count returns to the same level after each transition. If it rises continually, return to plugin isolation rather than scheduling more frequent restarts.
Use the TF2 Edict Limiter as a guardrail
Poggicek’s TF2 Edict Limiter is a SourceMod plugin designed to prevent the final allocation that would otherwise cause an ED_Alloc: no free edicts crash. It watches the number of free slots and intervenes when that number falls below a configured threshold. The documented default threshold is eight edicts.
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1Clear out junk files and repair common Windows errors2Fix the driver behind crashes, sound loss and screen glitches3Repair Windows errors before they cause bigger problemsDocumented commands include:
sm_edictcountfor the current total.sm_spewedictsfor classname counts.
The project documents several responses when the threshold is reached:
- No action.
- Prevent new entity spawns.
- Attempt a server restart.
- Restart the current map.
- Change to the next map.
- Dump an edict report (“edict spew”) for diagnosis.
Choose the least disruptive response that protects your server. Spawn prevention may preserve the current round but can break a plugin that assumes every creation request succeeds. A map restart or next-map action is more disruptive but can restore service automatically. An edict report is valuable when you want evidence before taking a recovery action.
What the limiter cannot do
The limiter does not make the engine’s maximum larger. It trades some late-round features or automated recovery for a lower probability of a hard crash. The project warns that improperly coded plugins may throw errors when entity creation is blocked, so test the limiter with your complete plugin set and review logs for failed-spawn handling.
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When to deploy it
- Use it after you have measured the problem, not as a substitute for finding a leak.
- Deploy it first on staging and exercise map loads, round transitions and high-entity events.
- Set a threshold that leaves enough room for normal event bursts; the documented eight-edict default is a starting point, not a guarantee for every server.
- Keep the underlying map or plugin fix on your work list even when the guardrail prevents crashes.
Choose the remedy by its trade-offs
| Remedy | Reduces current usage? | Preserves features? | Measurement or automation | Operational work |
|---|---|---|---|---|
| Remove unnecessary map entities | Yes, permanently | Only if nonessential objects are removed | Requires before-and-after counts | Map editing and possibly recompilation or replacement |
| Fix or disable a leaking plugin | Yes, permanently when cleanup is corrected | Depends on whether the plugin is repaired or removed | Requires controlled plugin tests | Plugin update, code change or feature decision |
| Reduce cosmetic and scripted additions | Yes | May reduce visual or event features | Use classname dumps to target reductions | Configuration or content changes |
| Restart or change map | Temporarily; clears stale allocations | Interrupts the current session | Can be scheduled or manual | Does not address recurring creation |
| TF2 Edict Limiter | No; it reserves a safety margin | May block late entity spawns | Provides counts, spew and recovery actions | SourceMod deployment, configuration and compatibility testing |
| Move to another managed host | Not by itself | Depends on whether you retain control of maps and plugins | May provide operational monitoring | Migration, compatibility checks and verification of terms |
Verification checklist after a fix
- Load the previously failing map with the production plugin list.
- Record
sm_edictcountafter load, after round start and after the event that formerly caused the crash. - Run
sm_spewedictsand compare the largest classname groups with the baseline. - Play enough rounds to reveal a slow leak; one successful map load is not proof of stability.
- Change maps and confirm that temporary entities are released rather than carried into the next session.
- Review server logs for failed entity creation, plugin exceptions or limiter interventions.
- Repeat the test after each TF2 update or plugin update because entity behavior and compatibility can change.
If the error returns only on one map, keep the map isolated from the rest of the rotation until its entity count is reduced. If it returns across maps with a steadily rising count, focus on global plugins and their cleanup paths.
Common failure modes and how to respond
The server still crashes after a restart
A restart only cleared the previous allocation set. Re-run the count immediately after map load and during the event that triggers the failure. If the baseline is already high, reduce map entities; if it climbs, isolate plugins.
The limiter causes plugin errors
Entity creation is being blocked as designed, but the plugin requesting the entity is not handling failure. Capture the error, identify the requesting plugin and update, configure or remove it. Raising the limiter threshold without fixing that code merely causes intervention earlier.
A classname appears at the top of every dump
High frequency is not automatically a leak. Compare the count across rounds and maps, then disable the component that creates that class. A stable high count may be legitimate map content; a monotonic increase is stronger evidence of missing cleanup.
The map works alone but fails with the public plugin set
The map is close enough to the ceiling that plugin-created entities push it over. Keep the map and plugin set identical to production, then remove or repair the largest optional entity producers. A guardrail can protect the server while you complete that work.
Evidence and compatibility limits
The mechanism described here is supported by open-source allocator code, a community TF2 Edict Limiter README and a hosting-provider knowledgebase example. Those sources explain allocation, reuse and practical diagnostics, but they do not establish a Valve-published specification covering every current TF2 build. Test map and plugin changes on staging, retain rollback copies and re-check compatibility after TF2 updates.
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