Performance Evaluation
Before optimizing, you need to understand ClashX's current performance status. Using system monitoring tools and ClashX's built-in features, you can comprehensively evaluate performance.
how tocheckperformancemetrics
usefollowingmethodevaluate ClashX performance:
Normally, ClashX should use 50-100MB of memory when idle, CPU usage below 5%, and connection latency depends on node quality.
Memory Usage Optimization
Methods to Reduce Memory Usage
The following configurations can significantly reduce memory usage:
memoryoptimizationconfiguration
# Disable unnecessary logs
log-level: warning
# Reduce DNS cache
dns:
enable: true
fake-ip-range: 198.18.0.1/16
# Use smaller cache
cache-size: 512
# Limit concurrent connections
profile:
store-selected: false
store-fake-ip: false
Regular Cache Cleanup
Regular cleanup can free up occupied memory:
- Clean log files (weekly)
- Delete expired ruleset cache
- Restart ClashX to release memory fragments
optimizationrulesconfiguration
The number of rules directly affects memory usage:
| optimizationmethod | Effect | Difficulty |
|---|---|---|
| Use rulesets instead of individual rules | Significant | Easy |
| Remove unused rules | Moderate | Easy |
| Merge duplicate rules | Minor | Moderate |
Over-optimization may limit functionality. It is recommended to optimize while ensuring normal functionality.
Connection Speed Enhancement
DNS configurationoptimization
DNS is a key factor affecting connection speed:
High-Performance DNS Configuration
dns:
enable: true
ipv6: false
enhanced-mode: fake-ip
nameserver:
- 119.29.29.29
- 223.5.5.5
fallback:
- tls://1.1.1.1:853
- https://dns.google/dns-query
fallback-filter:
geoip: true
geoip-code: CN
Enable TCP Concurrency
TCP concurrency can speed up connection establishment:
TCP Concurrency Configuration
experimental:
tcp-concurrent: true
When enabled, ClashX will try multiple connections simultaneously and select the fastest one.
Node Selection Optimization
Choosing the right node has a huge impact on speed:
- Regular latency testing: Test node latency daily
- Use url-test: Automatically select the fastest node
- Avoid overloaded nodes: Choose low-load nodes during peak hours
- Geographic proximity: Prefer geographically closer nodes
Proxy Protocol Selection
Different protocols have different performance:
System Resource Management
CPU Usage Control
Methods to reduce CPU usage:
CPU optimizationconfiguration
# Reduce log output
log-level: error
# Lower speed-test frequency
proxy-groups:
- name: "Auto"
type: url-test
interval: 600 # increase from 300 to 600 seconds
# Disable unnecessary features
experimental:
ignore-resolve-fail: true
Network Bandwidth Optimization
Make good use of network bandwidth:
- Limit single connection speed (if necessary)
- Use load balancing to distribute traffic
- Avoid downloading large files during peak hours
Disk Space Management
Prevent log files from taking up too much space:
Regularly clean the ~/.config/clash/logs/ directory and delete log files older than 30 days. You can set up a cron job for automatic cleanup.
Performance Monitoring
use Dashboard monitoring
ClashX Dashboard provides real-time performance monitoring:
Dashboard features
- Real-time traffic monitoring (upload/download speed)
- activeconnectionsstatistics
- Rule matching status
- Node latency display
macOS Activity Monitor
Use system tools to monitor resource usage:
- Open "Activity Monitor"
- Search for "ClashX" process
- View memory, CPU, and network usage
- If abnormalities are found, try restarting ClashX
Log Analysis
Discover performance bottlenecks through logs:
| Performance Issue | Log Pattern | Solution |
|---|---|---|
| Slow DNS Resolution | DNS timeout error | Change DNS server |
| Node connection issue | Connection failed | Switch node or update subscription |
| Rule error | Parse error | Check rule syntax |
Optimization Tips Summary
Quick Optimization Checklist
Here are the key optimization tips:
Optimization Strategies by Scenario
Choose optimization direction based on usage scenario:
Web browsing: Optimize DNS, use fake-ip โข File download: Use load balancing, choose high-bandwidth nodes โข Gaming: Reduce latency, use fallback for stability โข Streaming: Choose dedicated streaming nodes, fixed strategy
Common Mistakes
Avoid these optimization pitfalls:
- Weekly: clear logs and test node latency
- Monthly: update ClashX and optimize rule sets
- Quarterly: review the entire configuration and remove unused entries
- When issues appear: check logs, restart ClashX, and refresh subscriptions
performanceoptimizationsummary
Performance tuning is an ongoing effort. Different users have different requirements, so start with the simplest optimizations, adjust gradually, and find the setup that matches your workflow. Remember: stability matters more than chasing absolute peak performance.
Back up your current configuration before experimenting. If a tweak causes problems, you can roll back to the stable version instantly.
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