NEXUS

Intelligent kernel framework — prediction, anomaly detection, performance tuning, and AI-driven healing.

Profile Reference

NEXUS — Intelligent Kernel Framework

NEXUS is Helix's AI-driven kernel intelligence layer. It's an ambitious framework organized across a multi-year roadmap that progressively adds prediction, self-healing intelligence, performance optimization, and eventually autonomous kernel evolution. NEXUS sits above the core kernel and observes everything — CPU usage, memory pressure, I/O patterns, context switches — to make the kernel smarter over time.

NEXUS is entirely optional. A minimal Helix kernel runs perfectly without it. Enable features incrementally via NexusConfig to add intelligence without coupling to the full framework.

Core API

The Nexus struct is the entry point. You initialize it with a config that specifies which features to enable, and it integrates with the kernel's event bus and timer system automatically.

subsystems/nexus/src/config/main.rs
rust
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pub struct NexusConfig {
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pub level: NexusLevel, // How autonomous NEXUS should be
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pub memory_budget: usize, // Default: 16 MB
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pub cpu_budget_percent: u8, // Default: 1%
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pub max_decision_cycles: u64, // Default: 100_000
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pub event_queue_size: usize, // Default: 10_000
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pub prediction: PredictionConfig,
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pub healing: HealingConfig,
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pub tracing: TracingConfig,
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pub chaos: ChaosConfig,
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pub performance: PerformanceConfig,
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}
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impl NexusConfig {
pub fn default() -> Self; // Balanced defaults
pub fn minimal() -> Self; // Monitoring only
pub fn full() -> Self; // All features enabled
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}
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#[repr(u8)]
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pub enum NexusLevel {
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Disabled = 0, // No intelligence
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Monitoring = 1, // Observe only
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Detection = 2, // Detect anomalies
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Prediction = 3, // Predict failures
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Correction = 4, // Suggest fixes
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Healing = 5, // Auto-recover
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Autonomous = 6, // Full autonomy
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}
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pub enum NexusState {
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Uninitialized, Initializing, Running,
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Paused, Degraded, Healing, ShuttingDown, Stopped,
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}
Index

Roadmap Modules

NEXUS is organized in yearly phases, each adding progressively more sophisticated capabilities. You can enable any combination of features independently.

NEXUS Roadmap4N · 3E
Year 1 — FoundationCore hardening & bas…1Year 2 — CognitionWorkload understandi…2Year 3 — EvolutionSelf-improvement2Year 4 — SymbiosisHuman-kernel co-evol…1
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Year 1 — Foundation

These are the core intelligence features. They provide the data collection, analysis, and basic decision-making that all later features build upon.

ModulePurposeKey Types
hardeningSecurity posture monitoring, attack surface analysis, threat detectionSecurityPolicy, ThreatLevel, AttackVector
predictionWorkload forecasting using historical patterns, resource pre-allocationPredictionModel, Forecast, DataPoint
self_healingAI-driven crash recovery, multi-strategy healing plans with fallbacksHealingPolicy, RecoveryPlan, RecoveryStep
performanceReal-time performance tuning, bottleneck detection, automatic optimizationPerfTarget, TuningAction, Bottleneck

Year 2 — Cognition

Pattern recognition and workload classification. NEXUS learns from the kernel's behavior to make better predictions and decisions.

ModulePurposeKey Types
cognitionCross-subsystem pattern recognition from kernel telemetry streamsPattern, Insight, Correlation
workload_classifierAutomatic classification of running workloads (batch, interactive, server)WorkloadClass, Classification, Confidence
anomaly_detectorStatistical anomaly detection on performance metrics and resource usageAnomaly, Threshold, Baseline

Year 3 — Evolution

Genetic algorithms and A/B testing for kernel parameter optimization. NEXUS evolves the kernel's configuration to find optimal settings for your specific workload.

ModulePurposeKey Types
evolutionGenetic-algorithm kernel parameter optimization across generationsGenome, Fitness, Population
experimentA/B testing of kernel configurations with statistical significance testingExperiment, Result, ConfidenceInterval
adaptationHardware-profile-aware auto-tuning based on detected capabilitiesAdaptationRule, HwProfile, TuneResult

Year 4 — Symbiosis

Multi-node intelligence and cooperative kernel coordination for distributed systems.

ModulePurposeKey Types
symbiosisCooperative intelligence sharing across kernel boundariesPeer, SharedState, Protocol
federationMulti-node kernel coordination for clustersFederationConfig, Cluster, Consensus
intent_engineTranslates high-level intent ("make this fast") into low-level kernel actionsIntent, Plan, ActionSequence

Prediction System

The prediction module is the most immediately useful NEXUS feature. It forecasts CPU load, memory pressure, and I/O bandwidth based on historical data, then feeds those predictions to the scheduler and allocator for proactive resource management.

subsystems/nexus/src/predict/types.rs
rust
pub struct PredictionConfig {
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pub enabled: bool,
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pub horizon_ms: u64, // How far ahead to predict (default 30s)
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pub min_confidence: f32, // Minimum confidence threshold
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pub detect_degradation: bool,
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pub detect_memory_leaks: bool,
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pub predict_deadlocks: bool,
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}
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pub struct CrashPrediction {
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pub id: u64,
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pub kind: PredictionKind,
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pub confidence: PredictionConfidence, // 0.0–1.0
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pub time_to_failure_ms: u64,
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pub component: Option<ComponentId>,
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pub recommended_action: RecommendedAction,
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}
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pub enum PredictionKind {
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Crash, Deadlock, OutOfMemory, MemoryLeak,
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CpuStarvation, IoStall, StackOverflow, Livelock,
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ResourceExhaustion, Degradation, Corruption,
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}
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pub enum RecommendedAction {
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Monitor, Alert, Prepare, SoftRecover,
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HardRecover, Rollback, Quarantine, SurvivalMode,
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}
Index

Performance Tuning

The performance module continuously monitors hardware performance counters and applies tuning actions to meet configurable targets. It can adjust scheduler time slices, resize caches, migrate threads between CPUs, and more.

subsystems/nexus/src/config/performance.rs
rust
pub struct PerformanceConfig {
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pub enable_simd: bool, // Use SIMD for data processing
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pub enable_lockfree: bool, // Use lock-free data structures
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pub enable_branch_hints: bool, // Compiler branch hints
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pub enable_prefetch: bool, // Memory prefetching
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pub cache_line_size: usize, // Align to cache lines
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pub max_cores: usize, // Max cores NEXUS may use
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pub numa_aware: bool, // NUMA-aware scheduling
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}
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// NEXUS uses DecisionKind to encode optimization actions:
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pub enum DecisionKind {
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NoAction, Log, Warn,
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SoftRecover, HardRecover, // Recovery actions
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Isolate, Substitute, // Component management
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Rollback, SurvivalMode, // Escalation
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Predictive, Optimize, // Intelligence actions
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}
Index

AI-Driven Healing

NEXUS healing extends the core self-healing manager with intelligent decision-making. Instead of a fixed escalation ladder, NEXUS analyzes crash patterns and chooses the most effective recovery strategy.

AI Healing Pipeline5N · 5E
patterns foundplan readysteps donestill failingDetect FailureModule crash or heal…2Analyze PatternsInspect crash histor…2Build RecoveryPlanChoose recovery stra…2Execute StepsRun recovery actions2Verify RecoveryConfirm module healt…2
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subsystems/nexus/src/config/healing.rs
rust
pub struct HealingConfig {
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pub enabled: bool,
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pub enable_micro_rollback: bool,
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pub enable_reconstruction: bool,
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pub enable_substitution: bool,
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pub max_rollback_depth: usize,
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pub checkpoint_interval_ms: u64,
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pub max_healing_attempts: u32,
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pub healing_timeout_ms: u64,
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pub enable_quarantine: bool,
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}
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// NEXUS uses an escalating healing strategy:
pub enum HealingStrategy {
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Monitor, // Watch and wait
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SoftReset, // Gentle restart
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HardReset, // Full reset
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MicroRollback, // Roll back recent changes
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FullRollback, // Roll back to last checkpoint
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Reconstruct, // Rebuild component from scratch
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Substitute, // Replace with alternative
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Quarantine, // Isolate the component
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SurvivalMode, // Last resort — minimal functionality
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}
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// Escalation chain: SoftReset → HardReset → MicroRollback
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// → FullRollback → Reconstruct → Substitute → Quarantine → SurvivalMode
Index

NEXUS is where Helix diverges most from traditional kernel design. While conventional kernels are static — configured once and never changed — NEXUS makes Helix a learning system that improves its own behavior over time. Start with the prediction and performance modules, and add more intelligence as your kernel matures.