FiveM Performance Profiling

FiveM provides built-in profiling tools to measure CPU usage, identify performance bottlenecks, and optimize server resources. These tools help diagnose lag, FPS drops, and network issues through server console commands and client-side utilities.

Types of Profilers

Profiler Type	Purpose	Scope
Resource Time Profiler	Measures CPU usage per resource	Server-side
Client Profiler	Profiles scripts causing FPS drops	Client-side
Network Profiler	Monitors bandwidth usage and event spam	Network traffic

Prerequisites

Active FiveM server with console access
Server console (txAdmin) or RCON access
For client profiling: F8 developer console access and appropriate permissions

Server-Side CPU Profiling

1. Start the Profiler

To profile all resources:

profile start

To profile a specific resource:

profile start <resourceName>

2. Data Collection

Allow the server to run for 30-60 seconds during normal gameplay or testing conditions.

3. Stop Profiling

profile stop

4. View Results

profile view

The output displays:

Resource name
Average execution time (ms)
Total function calls
CPU percentage usage

Resources with high average or total times indicate performance issues requiring optimization.

Client-Side Performance Profiling

1. Initialize Client Profiler

Press F8 to open the developer console
Execute: profiler record

2. Performance Testing

Perform actions that typically cause performance issues or frame drops.

3. Stop and Review

profiler stop
profiler view

4. Export Data (Optional)

profiler save <filename>

The exported file can be analyzed using Chrome's Performance Viewer at chrome://tracing.

Network Profiling

Real-Time Network Monitor

netgraph 1

Displays per-client network usage overlay similar to GTA Online's development tools.

Detailed Network Tracing

nettrace start

(perform network-intensive operations)

nettrace stop

Review logs for excessive event transmission or large data transfers.

Profiling Example

To diagnose inventory script performance:

Execute profile start inventory
Have players interact with inventory systems for 1-2 minutes
Run profile stop followed by profile view
If average tick time exceeds 2ms, the resource requires optimization

Best Practices

Conduct profiling during typical server load (10-20 players)
Avoid profiling during server restarts or idle periods
Investigate resources with >2-3ms average tick times
Use resmon 1 for real-time performance monitoring overlay

Command Reference

Command	Function
`resmon 1`	Enable real-time resource monitor overlay
`profile start [resource]`	Begin CPU profiling (all or specific resource)
`profile stop`	End profiling session
`profile view`	Display profiling results
`profiler record`	Start client-side performance profiling
`profiler stop`	End client-side profiling
`profiler save <name>`	Export profiling data to file
`nettrace start/stop`	Control network traffic profiling
`netgraph 1`	Display network usage overlay

FiveM ConVars Reference - Server configuration variables
FiveM Error Troubleshooting - Connection and error fixes
External pma-voice Setup - Improve voice performance
Connection Troubleshooting - Network diagnostics

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