We’re proud to announce the release of LibreQoS 1.5-rc1! The changelog is really rather large!

LibreQoS v1.5-RC-1 Changelog

Major Features

StormGuard * Automatic Rate Adjustment

• StormGuard automatic bandwidth adjustment system integrated directly into lqosd
• Dynamically adjusts circuit rates based on network conditions and TCP retransmission rates
• Score-based decision making with bias towards returning to maximum rates
• Independent min/max/step bandwidth configuration per site
• Optional CSV logging for rate changes
• Web UI configuration panel for StormGuard settings

LQOS Bakery * TC Command Processing System

• Complete rewrite of TC (Traffic Control) command processing in Rust
• Fractional speed plan support (floating-point rates instead of integers)
• Lazy queue creation system for improved performance
• Lazy threshold bytes setting * only announce circuits that reach traffic threshold
• In-memory command execution reducing file I/O overhead
• Queue pruning system for efficient resource management
• Batch command processing to reduce bus overload

Insight Integration Enhancements

• Complete web-based signup system for Insight service with trial teasers
• Dynamic circuit counting for pricing estimates
• Remote topology management with primary/secondary role support
• Automatic scheduler control based on Insight topology settings
• License key enrollment system for existing shapers
• Topology sharing with remote Insight mapping service
• Insight teasers load from server with local fallback
• Removed opt-in “use_insight” configuration field

Performance Improvements

• Memory usage reductions through improved flow tracking
• Pointer-free flow analysis for simpler memory management
• ArcSwap-based configuration to reduce churn
• Persistent bus connections replacing read-to-end pattern
• Lazy queue expiration aligned with XDP garbage collection
• More aggressive flow expiration to reduce memory burstiness

UI/UX Enhancements

Dashboard Improvements

• New dashboard editor with Bootstrap 5 accordion interface
• Color-blind mode toggle for all visualizations
• Sortable circuit network traffic tables
• Mouse-over tooltips with axis highlighting on time graphs
• “Hide small flows” checkbox for active flows table
• Improved sankey diagram layouts (circuit>ASN>protocol>IP)
• Top 20 flow limitation on active flows sankey
• Cache busters for JavaScript and CSS files

Visualization Updates

• Dave Täht memorial feature (moved to support page only)
• Klingon redaction mode for privacy
• Better shaped/unshaped pie chart coloring
• Filtered display removing empty tree sections
• Improved throughput history rendering
• TimedCache on circuit capacity to reduce UI jumpiness

Integration Updates

UISP Integration

• New integration strategies: “ap_only”, “ap_site”, and improved “full2”
• Bottom-up processing starting from clients
• Support for multiple services per customer
• 64-bit bandwidth support
• Configurable client bandwidth multiplier
• Node promotion to root functionality
• Airmax and LTU capacity multipliers restored

General Integration Features

• Smart scheduler that skips reload if nothing changed
• Better error reporting and diagnostics
• Blackboard submission improvements
• Route override support with bidirectional graph routing

Configuration & Management

New Configuration Options

• disable_icmp_ping * Disable ICMP pinging on circuits page
• client_bandwidth_multiplier * Adjust client bandwidth calculations
• promote_to_root * Specify nodes to promote to root level
• Lazy queue configuration options
• StormGuard enable/disable and tuning parameters

System Improvements

• Cursive-based lqos_setup tool * creates configuration directly instead of Python conversion
• Health check endpoint at /health returning 220/OK
• PyO3 syntax updated for version 25.1
• All package versions updated
• Better TC error reporting with improved locking
• Scheduler service restart on “Reload LibreQoS”

Bug Fixes

Critical Fixes

• Fixed duration underflow panic
• Fixed Per-Protocol Packet Count calculations
• Fixed TCP retransmit percentage calculations
• Fixed MQ device reload issues
• Fixed queue creation regression with lazy_queues=false
• Fixed site speed changes not respecting min < max requirement
• Fixed empty device names crashing UISP integration

UI Fixes

• Re-enabled time period buttons
• Fixed frozen UI when queue data unavailable
• Fixed tooltip display scaling for traffic
• Fixed dashboard item addition when dashboard empty
• Fixed Insight time-based packet display
• Fixed ping icon dramatics with proper tooltips

Integration Fixes

• Fixed multiple services per customer in UISP
• Fixed bandwidth calculation with commit multipliers
• Fixed circular recursion in graph calculations
• Fixed Netflow 9 source port selection
• Fixed version check submission confusion

Documentation Updates

• Created LTS documentation
• Updated CAKE documentation
• Updated integration guides
• Updated troubleshooting guide
• Updated design documentation
• Added LQOS Bakery implementation plans

Development & Testing

• Enhanced allocative flamegraph system for memory profiling
• Comprehensive test coverage for lazy queue system
• Circuit hash integrity tests
• Build script improvements
• Warning and log spam reduction throughout

Breaking Changes

• “full2” is now the default UISP integration strategy replacing “full”
• TC command processing moved to Rust implementation by default
• Fractional speeds now use floating-point values instead of integers