Vertical Scaling in Go Applications
Overview
Vertical scaling—increasing the resources of existing instances—is often the first and most cost-effective approach to handling increased load. This chapter provides practical guidance for maximizing single-instance performance in Go applications.
Learning Objectives
By the end of this chapter, you will understand:
- When to choose vertical scaling over horizontal scaling
- Resource optimization techniques for CPU, memory, storage, and network
- Go-specific tuning strategies for maximum performance
- Monitoring and measurement approaches for scaling decisions
- Cost-benefit analysis of vertical scaling strategies
- Limitations and transition points to horizontal scaling
Understanding Vertical Scaling
What is Vertical Scaling?
Vertical scaling involves upgrading hardware resources of existing instances:
- CPU: More cores, higher frequency, specialized processors
- Memory: Additional RAM, faster memory types, larger caches
- Storage: SSD upgrades, NVMe drives, increased IOPS
- Network: Higher bandwidth, lower latency connections
When to Scale Vertically
Ideal Scenarios:
- Application is not easily parallelizable
- Single-threaded bottlenecks exist
- Shared state requires coordination
- Simplicity is preferred over complexity
Go Application Indicators:
// Monitor these metrics to identify vertical scaling opportunities
type ScalingMetrics struct {
CPUUtilization float64 // > 80% suggests CPU upgrade
MemoryPressure float64 // > 85% suggests memory upgrade
GCPauseTime time.Duration // > 10ms suggests memory/GC tuning
GoroutineCount int // > 10000 may suggest architectural issues
AllocationRate int64 // High rate suggests memory optimization
}
// Example monitoring function
func checkScalingNeeds(metrics ScalingMetrics) ScalingRecommendation {
if metrics.CPUUtilization > 80 {
return ScalingRecommendation{
Type: CPUUpgrade,
Urgency: High,
EstimatedImprovement: "20-40% performance increase",
}
}
if metrics.MemoryPressure > 85 {
return ScalingRecommendation{
Type: MemoryUpgrade,
Urgency: Medium,
EstimatedImprovement: "Reduced GC pressure, 15-30% improvement",
}
}
return ScalingRecommendation{Type: NoAction}
}
Practical Vertical Scaling Implementation
1. CPU Optimization and Scaling
Understanding Go CPU Usage Patterns
package main
import (
"runtime"
"runtime/debug"
"time"
)
// CPUOptimizer helps tune CPU-related performance
type CPUOptimizer struct {
maxProcs int
gcPercent int
schedAffinity bool
}
func NewCPUOptimizer() *CPUOptimizer {
return &CPUOptimizer{
maxProcs: runtime.NumCPU(),
gcPercent: 100, // Default GOGC
schedAffinity: false,
}
}
// OptimizeForCPUIntensiveWorkload configures Go runtime for CPU-bound tasks
func (opt *CPUOptimizer) OptimizeForCPUIntensiveWorkload() {
// Set GOMAXPROCS to physical core count for CPU-bound work
runtime.GOMAXPROCS(opt.maxProcs)
// Increase GOGC to reduce GC frequency for CPU-intensive work
debug.SetGCPercent(200) // Allow heap to grow larger before GC
// For very CPU-intensive work, consider disabling GC temporarily
// debug.SetGCPercent(-1) // Disable GC (use with caution!)
}
// OptimizeForLatencySensitive configures for low-latency requirements
func (opt *CPUOptimizer) OptimizeForLatencySensitive() {
// Keep default GOMAXPROCS
runtime.GOMAXPROCS(opt.maxProcs)
// Lower GOGC for more frequent, shorter GC pauses
debug.SetGCPercent(50)
// Set memory limit to prevent memory pressure
debug.SetMemoryLimit(8 << 30) // 8GB limit example
}
// MonitorCPUEfficiency tracks CPU utilization efficiency
func (opt *CPUOptimizer) MonitorCPUEfficiency() CPUEfficiencyReport {
var before, after runtime.MemStats
runtime.ReadMemStats(&before)
start := time.Now()
// Simulate work
time.Sleep(time.Second)
elapsed := time.Since(start)
runtime.ReadMemStats(&after)
return CPUEfficiencyReport{
Duration: elapsed,
GCCycles: after.NumGC - before.NumGC,
AllocRate: float64(after.TotalAlloc-before.TotalAlloc) / elapsed.Seconds(),
Utilization: calculateCPUUtilization(), // Platform-specific implementation
}
}
type CPUEfficiencyReport struct {
Duration time.Duration
GCCycles uint32
AllocRate float64 // bytes/second
Utilization float64 // percentage
}
// Example: Optimizing compute-intensive function
func OptimizedMatrixMultiply(a, b [][]float64) [][]float64 {
n := len(a)
result := make([][]float64, n)
for i := range result {
result[i] = make([]float64, n)
}
// Use all available CPU cores
numWorkers := runtime.NumCPU()
workChan := make(chan int, n)
// Worker goroutines for parallel computation
var wg sync.WaitGroup
for w := 0; w < numWorkers; w++ {
wg.Add(1)
go func() {
defer wg.Done()
for i := range workChan {
for j := 0; j < n; j++ {
for k := 0; k < n; k++ {
result[i][j] += a[i][k] * b[k][j]
}
}
}
}()
}
// Distribute work
for i := 0; i < n; i++ {
workChan <- i
}
close(workChan)
wg.Wait()
return result
}
CPU Scaling Hardware Considerations
Processor Selection:
- High-frequency CPUs: Better for single-threaded Go code
- Many-core CPUs: Better for highly concurrent Go applications
- Specialized processors: Consider ARM64 for energy efficiency
Go-Specific CPU Optimizations:
# Environment variables for CPU optimization
export GOMAXPROCS=16 # Match physical core count
export GOGC=200 # Reduce GC frequency for CPU-bound work
export GODEBUG=schedtrace=1000 # Monitor scheduler behavior
alertManager *AlertManager
costOptimizer *CostOptimizer
predictionEngine *PredictionEngine
automationManager *AutomationManager
healthChecker *HealthChecker
reportGenerator *ReportGenerator
mu sync.RWMutex
activeResources map[string]*ResourceInstance
scalingOperations map[string]*ScalingOperation
optimizations map[string]*Optimization
profiles map[string]*PerformanceProfile
}
// VerticalScalingConfig contains vertical scaling configuration type VerticalScalingConfig struct { ResourceConfig ResourceConfig OptimizationConfig OptimizationConfig HardwareConfig HardwareConfig MemoryConfig MemoryConfig CPUConfig CPUConfig StorageConfig StorageConfig NetworkConfig NetworkConfig MonitoringConfig MonitoringConfig TuningConfig TuningConfig AutomationConfig AutomationConfig CostConfig CostConfig SecurityConfig SecurityConfig ComplianceConfig ComplianceConfig ReportingConfig ReportingConfig AlertingConfig AlertingConfig }
// ResourceConfig contains resource configuration type ResourceConfig struct { CPU CPUResourceConfig Memory MemoryResourceConfig Storage StorageResourceConfig Network NetworkResourceConfig GPU GPUResourceConfig Accelerator AcceleratorResourceConfig Limits ResourceLimits Quotas ResourceQuotas Policies ResourcePolicies Monitoring ResourceMonitoring Optimization ResourceOptimization Automation ResourceAutomation }
// CPUResourceConfig contains CPU resource configuration type CPUResourceConfig struct { Cores int Frequency float64 Architecture CPUArchitecture Features []CPUFeature Affinity CPUAffinity Scheduling CPUScheduling Throttling CPUThrottling PowerManagement CPUPowerManagement NUMA NUMAConfig Virtualization VirtualizationConfig Cache CPUCacheConfig Pipeline CPUPipelineConfig }
// CPUArchitecture defines CPU architectures type CPUArchitecture int
const ( X86Architecture CPUArchitecture = iota X86_64Architecture ARMArchitecture ARM64Architecture RISC_VArchitecture PowerPCArchitecture )
// CPUFeature defines CPU features type CPUFeature int
const ( SSEFeature CPUFeature = iota AVXFeature AVX2Feature AVX512Feature AESFeature HyperThreadingFeature TurboBoostFeature VirtualizationFeature )
// CPUAffinity contains CPU affinity configuration type CPUAffinity struct { Enabled bool Policy AffinityPolicy CPUSet []int Threads ThreadAffinity Processes ProcessAffinity Isolation CPUIsolation }
// AffinityPolicy defines affinity policies type AffinityPolicy int
const ( DefaultAffinity AffinityPolicy = iota StrictAffinity LooseAffinity AutoAffinity )
// ThreadAffinity contains thread affinity configuration type ThreadAffinity struct { Enabled bool Strategy ThreadStrategy Binding ThreadBinding Distribution ThreadDistribution Balancing ThreadBalancing }
// ThreadStrategy defines thread strategies type ThreadStrategy int
const ( RoundRobinThread ThreadStrategy = iota WorkStealingThread AffinityBasedThread LoadBalancedThread )
// ThreadBinding defines thread binding modes type ThreadBinding int
const ( NoBinding ThreadBinding = iota SoftBinding HardBinding ExclusiveBinding )
// ThreadDistribution contains thread distribution configuration type ThreadDistribution struct { Strategy DistributionStrategy Groups []ThreadGroup Priorities ThreadPriorities Weights ThreadWeights }
// DistributionStrategy defines distribution strategies type DistributionStrategy int
const ( EvenDistribution DistributionStrategy = iota WeightedDistribution PriorityDistribution LoadBasedDistribution )
// ThreadGroup defines thread groups type ThreadGroup struct { Name string CPUSet []int Threads []int Priority int Weight float64 Limits ThreadLimits }
// ThreadLimits contains thread limits type ThreadLimits struct { MaxThreads int CPUQuota float64 MemoryQuota int64 IOQuota int64 }
// ThreadPriorities contains thread priority configuration type ThreadPriorities struct { Default int High int Low int RealTime int Interactive int Batch int }
// ThreadWeights contains thread weight configuration type ThreadWeights struct { Compute float64 IO float64 Network float64 Memory float64 Graphics float64 }
// ThreadBalancing contains thread balancing configuration type ThreadBalancing struct { Enabled bool Algorithm BalancingAlgorithm Interval time.Duration Threshold float64 History BalancingHistory }
// BalancingAlgorithm defines balancing algorithms type BalancingAlgorithm int
const ( LoadBasedBalancing BalancingAlgorithm = iota LatencyBasedBalancing ThroughputBasedBalancing HybridBalancing )
// BalancingHistory contains balancing history configuration type BalancingHistory struct { Window time.Duration Samples int Weights []float64 Smoothing float64 }
// ProcessAffinity contains process affinity configuration type ProcessAffinity struct { Enabled bool Strategy ProcessStrategy Inheritance bool Migration ProcessMigration Monitoring ProcessMonitoring }
// ProcessStrategy defines process strategies type ProcessStrategy int
const ( StaticProcess ProcessStrategy = iota DynamicProcess AdaptiveProcess PredictiveProcess )
// ProcessMigration contains process migration configuration type ProcessMigration struct { Enabled bool Triggers []MigrationTrigger Strategy MigrationStrategy Cost MigrationCost History MigrationHistory }
// MigrationTrigger defines migration triggers type MigrationTrigger struct { Type TriggerType Condition string Threshold float64 Duration time.Duration }
// MigrationStrategy defines migration strategies type MigrationStrategy int
const ( ImmediateMigration MigrationStrategy = iota GradualMigration ScheduledMigration AdaptiveMigration )
// MigrationCost contains migration cost configuration type MigrationCost struct { CPU float64 Memory float64 Network float64 Latency time.Duration Impact float64 }
// MigrationHistory contains migration history type MigrationHistory struct { Records []MigrationRecord Window time.Duration Analysis MigrationAnalysis Patterns MigrationPatterns }
// MigrationRecord defines migration records type MigrationRecord struct { Timestamp time.Time Source int Target int Reason string Cost MigrationCost Success bool Duration time.Duration }
// MigrationAnalysis contains migration analysis type MigrationAnalysis struct { SuccessRate float64 AverageCost MigrationCost Patterns []string Trends []string Predictions []string }
// MigrationPatterns contains migration patterns type MigrationPatterns struct { Temporal []TemporalPattern Load []LoadPattern Application []ApplicationPattern System []SystemPattern }
// TemporalPattern defines temporal patterns type TemporalPattern struct { Period time.Duration Frequency float64 Amplitude float64 Phase float64 }
// LoadPattern defines load patterns type LoadPattern struct { Type LoadPatternType Threshold float64 Duration time.Duration Impact float64 }
// LoadPatternType defines load pattern types type LoadPatternType int
const ( CPULoadPattern LoadPatternType = iota MemoryLoadPattern IOLoadPattern NetworkLoadPattern )
// ApplicationPattern defines application patterns type ApplicationPattern struct { Name string Type ApplicationType Behavior ApplicationBehavior Resources ApplicationResources Performance ApplicationPerformance }
// ApplicationType defines application types type ApplicationType int
const ( ComputeIntensive ApplicationType = iota MemoryIntensive IOIntensive NetworkIntensive Interactive Batch )
// ApplicationBehavior contains application behavior type ApplicationBehavior struct { CPUBound bool MemoryBound bool IOBound bool NetworkBound bool Latency LatencyBehavior Throughput ThroughputBehavior }
// LatencyBehavior defines latency behavior type LatencyBehavior struct { Sensitive bool Target time.Duration Tolerance time.Duration Variance float64 }
// ThroughputBehavior defines throughput behavior type ThroughputBehavior struct { Target float64 Burst float64 Sustained float64 Scalability float64 }
// ApplicationResources contains application resource usage type ApplicationResources struct { CPU CPUUsagePattern Memory MemoryUsagePattern Storage StorageUsagePattern Network NetworkUsagePattern }
// CPUUsagePattern defines CPU usage patterns type CPUUsagePattern struct { Average float64 Peak float64 Minimum float64 Variance float64 Frequency float64 Burst CPUBurstPattern }
// CPUBurstPattern defines CPU burst patterns type CPUBurstPattern struct { Duration time.Duration Intensity float64 Frequency float64 Predictable bool }
// MemoryUsagePattern defines memory usage patterns type MemoryUsagePattern struct { Working int64 Peak int64 Growth MemoryGrowthPattern Allocation AllocationPattern GC GCPattern }
// MemoryGrowthPattern defines memory growth patterns type MemoryGrowthPattern struct { Rate float64 Trend GrowthTrend Cycles []GrowthCycle Limits GrowthLimits }
// GrowthTrend defines growth trends type GrowthTrend int
const ( LinearGrowth GrowthTrend = iota ExponentialGrowth LogarithmicGrowth CyclicGrowth StableGrowth )
// GrowthCycle defines growth cycles type GrowthCycle struct { Period time.Duration Amplitude float64 Offset float64 Phase float64 }
// GrowthLimits contains growth limits type GrowthLimits struct { Soft float64 Hard float64 Warning float64 Critical float64 }
// AllocationPattern defines allocation patterns type AllocationPattern struct { Rate float64 Size AllocationSizePattern Frequency AllocationFrequency Objects ObjectPattern }
// AllocationSizePattern defines allocation size patterns type AllocationSizePattern struct { Average int64 Peak int64 Distribution SizeDistribution Classes []SizeClass }
// SizeDistribution defines size distribution type SizeDistribution struct { Type DistributionType Parameters map[string]float64 Percentiles map[int]int64 }
// DistributionType defines distribution types type DistributionType int
const ( NormalDistribution DistributionType = iota UniformDistribution ExponentialDistribution PowerLawDistribution LogNormalDistribution )
// SizeClass defines size classes type SizeClass struct { Min int64 Max int64 Frequency float64 Purpose string }
// AllocationFrequency defines allocation frequency type AllocationFrequency struct { Rate float64 Bursts []AllocationBurst Patterns []FrequencyPattern }
// AllocationBurst defines allocation bursts type AllocationBurst struct { Duration time.Duration Rate float64 Trigger string Impact float64 }
// FrequencyPattern defines frequency patterns type FrequencyPattern struct { Period time.Duration Amplitude float64 Type PatternType }
// PatternType defines pattern types type PatternType int
const ( PeriodicPattern PatternType = iota BurstPattern RandomPattern TrendPattern )
// ObjectPattern defines object patterns type ObjectPattern struct { Types []ObjectType Lifetimes []ObjectLifetime References ObjectReferences Cleanup ObjectCleanup }
// ObjectType defines object types type ObjectType struct { Name string Size int64 Count int64 Lifetime time.Duration References int }
// ObjectLifetime defines object lifetimes type ObjectLifetime struct { Type LifetimeType Duration time.Duration Variance float64 Pattern string }
// LifetimeType defines lifetime types type LifetimeType int
const ( ShortLived LifetimeType = iota MediumLived LongLived Permanent )
// ObjectReferences contains object reference patterns type ObjectReferences struct { Incoming []ReferencePattern Outgoing []ReferencePattern Cycles []ReferenceCycle Leaks []ReferenceLeak }
// ReferencePattern defines reference patterns type ReferencePattern struct { Type ReferenceType Count int Strength ReferenceStrength Lifetime time.Duration }
// ReferenceType defines reference types type ReferenceType int
const ( StrongReference ReferenceType = iota WeakReference SoftReference PhantomReference )
// ReferenceStrength defines reference strength type ReferenceStrength int
const ( DirectReference ReferenceStrength = iota IndirectReference ChainedReference CircularReference )
// ReferenceCycle defines reference cycles type ReferenceCycle struct { Length int Objects []string Strength ReferenceStrength Lifetime time.Duration Breakable bool }
// ReferenceLeak defines reference leaks type ReferenceLeak struct { Source string Target string Type LeakType Rate float64 Impact float64 }
// LeakType defines leak types type LeakType int
const ( MemoryLeak LeakType = iota ResourceLeak HandleLeak ThreadLeak )
// ObjectCleanup contains object cleanup configuration type ObjectCleanup struct { Strategy CleanupStrategy Triggers []CleanupTrigger Policies []CleanupPolicy Monitoring CleanupMonitoring }
// CleanupStrategy defines cleanup strategies type CleanupStrategy int
const ( ImmediateCleanup CleanupStrategy = iota DeferredCleanup BatchCleanup ScheduledCleanup )
// CleanupTrigger defines cleanup triggers type CleanupTrigger struct { Type TriggerType Condition string Threshold float64 Priority int }
// CleanupPolicy defines cleanup policies type CleanupPolicy struct { Name string Rules []CleanupRule Priority int Scope CleanupScope }
// CleanupRule defines cleanup rules type CleanupRule struct { Condition string Action CleanupAction Timing CleanupTiming Resources []string }
// CleanupAction defines cleanup actions type CleanupAction int
const ( ReleaseAction CleanupAction = iota RecycleAction ArchiveAction DeleteAction )
// CleanupTiming defines cleanup timing type CleanupTiming struct { Immediate bool Delay time.Duration Schedule string Deadline time.Time }
// CleanupScope defines cleanup scope type CleanupScope int
const ( LocalScope CleanupScope = iota ProcessScope SystemScope GlobalScope )
// CleanupMonitoring contains cleanup monitoring configuration type CleanupMonitoring struct { Enabled bool Metrics []string Alerts []string Reports []string History CleanupHistory }
// CleanupHistory contains cleanup history type CleanupHistory struct { Window time.Duration Records []CleanupRecord Analysis CleanupAnalysis Trends CleanupTrends }
// CleanupRecord defines cleanup records type CleanupRecord struct { Timestamp time.Time Type CleanupAction Target string Size int64 Duration time.Duration Success bool Impact float64 }
// CleanupAnalysis contains cleanup analysis type CleanupAnalysis struct { Efficiency float64 Performance CleanupPerformance Patterns []string Bottlenecks []string Recommendations []string }
// CleanupPerformance contains cleanup performance metrics type CleanupPerformance struct { Throughput float64 Latency time.Duration ResourceUsage float64 Impact float64 }
// CleanupTrends contains cleanup trends type CleanupTrends struct { Volume TrendAnalysis Performance TrendAnalysis Efficiency TrendAnalysis Impact TrendAnalysis }
// TrendAnalysis contains trend analysis type TrendAnalysis struct { Direction TrendDirection Strength float64 Confidence float64 Prediction float64 }
// TrendDirection defines trend directions type TrendDirection int
const ( IncreasingTrend TrendDirection = iota DecreasingTrend StableTrend VolatileTrend )
// GCPattern defines garbage collection patterns type GCPattern struct { Frequency GCFrequency Duration GCDuration Types []GCType Triggers []GCTrigger Impact GCImpact }
// GCFrequency defines GC frequency type GCFrequency struct { Minor float64 Major float64 Full float64 Concurrent float64 }
// GCDuration defines GC duration type GCDuration struct { Average time.Duration Peak time.Duration P99 time.Duration StopTheWorld time.Duration }
// GCType defines GC types type GCType struct { Name string Algorithm GCAlgorithm Generation int Concurrent bool Incremental bool }
// GCAlgorithm defines GC algorithms type GCAlgorithm int
const ( MarkAndSweepGC GCAlgorithm = iota CopyingGC GenerationalGC ConcurrentGC IncrementalGC RegionalGC )
// GCTrigger defines GC triggers type GCTrigger struct { Type GCTriggerType Threshold float64 Condition string Priority int }
// GCTriggerType defines GC trigger types type GCTriggerType int
const ( AllocationTrigger GCTriggerType = iota HeapSizeTrigger TimerTrigger PressureTrigger ManualTrigger )
// GCImpact defines GC impact type GCImpact struct { Throughput float64 Latency time.Duration Pausetime time.Duration Memory int64 CPU float64 }
// StorageUsagePattern defines storage usage patterns type StorageUsagePattern struct { Capacity int64 IOPS IOPSPattern Throughput ThroughputPattern Latency LatencyPattern Queue QueuePattern }
// IOPSPattern defines IOPS patterns type IOPSPattern struct { Read float64 Write float64 Random float64 Sequential float64 Mixed float64 }
// ThroughputPattern defines throughput patterns type ThroughputPattern struct { Read float64 Write float64 Sustained float64 Burst float64 Average float64 }
// LatencyPattern defines latency patterns type LatencyPattern struct { Read time.Duration Write time.Duration Sync time.Duration Async time.Duration P99 time.Duration }
// QueuePattern defines queue patterns type QueuePattern struct { Depth int Wait time.Duration Service time.Duration Utilization float64 }
// NetworkUsagePattern defines network usage patterns type NetworkUsagePattern struct { Bandwidth BandwidthPattern Latency NetworkLatencyPattern Connections ConnectionPattern Protocols ProtocolPattern }
// BandwidthPattern defines bandwidth patterns type BandwidthPattern struct { Ingress float64 Egress float64 Peak float64 Sustained float64 Burst float64 }
// NetworkLatencyPattern defines network latency patterns type NetworkLatencyPattern struct { RTT time.Duration Jitter time.Duration Loss float64 Congestion float64 }
// ConnectionPattern defines connection patterns type ConnectionPattern struct { Active int Rate float64 Duration time.Duration Errors float64 Timeouts float64 }
// ProtocolPattern defines protocol patterns type ProtocolPattern struct { HTTP ProtocolUsage HTTPS ProtocolUsage TCP ProtocolUsage UDP ProtocolUsage Custom map[string]ProtocolUsage }
// ProtocolUsage defines protocol usage type ProtocolUsage struct { Requests int64 Bytes int64 Errors int64 Latency time.Duration Throughput float64 }
// ApplicationPerformance contains application performance metrics type ApplicationPerformance struct { Throughput float64 Latency time.Duration ErrorRate float64 Availability float64 Efficiency float64 Scalability ScalabilityMetrics }
// ScalabilityMetrics contains scalability metrics type ScalabilityMetrics struct { Horizontal float64 Vertical float64 Efficiency float64 Bottlenecks []string Limits []string }
// SystemPattern defines system patterns type SystemPattern struct { Load SystemLoad Performance SystemPerformance Resources SystemResources Health SystemHealth }
// SystemLoad contains system load information type SystemLoad struct { CPU float64 Memory float64 Storage float64 Network float64 Overall float64 }
// SystemPerformance contains system performance metrics type SystemPerformance struct { Throughput float64 Latency time.Duration Availability float64 Reliability float64 Efficiency float64 }
// SystemResources contains system resource information type SystemResources struct { Total ResourceCapacity Used ResourceUsage Available ResourceCapacity Reserved ResourceCapacity }
// ResourceCapacity contains resource capacity information type ResourceCapacity struct { CPU float64 Memory int64 Storage int64 Network int64 GPU float64 }
// SystemHealth contains system health information type SystemHealth struct { Status HealthStatus Score float64 Components []ComponentHealth Issues []HealthIssue }
// ComponentHealth contains component health information type ComponentHealth struct { Name string Status HealthStatus Score float64 Metrics map[string]float64 }
// HealthIssue defines health issues type HealthIssue struct { Type IssueType Severity IssueSeverity Component string Description string Impact float64 Timestamp time.Time }
// IssueType defines issue types type IssueType int
const ( PerformanceIssue IssueType = iota ResourceIssue ConnectivityIssue ConfigurationIssue SecurityIssue )
// IssueSeverity defines issue severity levels type IssueSeverity int
const ( InfoIssue IssueSeverity = iota WarningIssue ErrorIssue CriticalIssue FatalIssue )
// CPUIsolation contains CPU isolation configuration type CPUIsolation struct { Enabled bool CPUSet []int Strategy IsolationStrategy Level IsolationLevel Exceptions []IsolationException }
// IsolationStrategy defines isolation strategies type IsolationStrategy int
const ( CompleteIsolation IsolationStrategy = iota PartialIsolation SharedIsolation DynamicIsolation )
// IsolationLevel defines isolation levels type IsolationLevel int
const ( ProcessLevel IsolationLevel = iota ThreadLevel TaskLevel SystemLevel )
// IsolationException defines isolation exceptions type IsolationException struct { Type ExceptionType Target string Condition string Action ExceptionAction }
// ExceptionType defines exception types type ExceptionType int
const ( ProcessException ExceptionType = iota ThreadException ServiceException SystemException )
// ExceptionAction defines exception actions type ExceptionAction int
const ( AllowException ExceptionAction = iota DenyException LogException AlertException )
// CPUScheduling contains CPU scheduling configuration type CPUScheduling struct { Policy SchedulingPolicy Priority SchedulingPriority Quantum time.Duration Nice int RealTime RealTimeConfig CFS CFSConfig Custom CustomScheduling }
// SchedulingPolicy defines scheduling policies type SchedulingPolicy int
const ( CFSPolicy SchedulingPolicy = iota RTPolicy FIFOPolicy RRPolicy BatchPolicy IdlePolicy )
// SchedulingPriority contains scheduling priority configuration type SchedulingPriority struct { Default int Minimum int Maximum int Nice int RealTime int }
// RealTimeConfig contains real-time configuration type RealTimeConfig struct { Enabled bool Priority int Budget time.Duration Period time.Duration Deadline time.Duration }
// CFSConfig contains CFS configuration type CFSConfig struct { Latency time.Duration MinGranularity time.Duration WakeupGranularity time.Duration Shares int Period time.Duration Quota time.Duration }
// CustomScheduling contains custom scheduling configuration type CustomScheduling struct { Algorithm string Parameters map[string]interface{} Rules []SchedulingRule Hooks []SchedulingHook }
// SchedulingRule defines scheduling rules type SchedulingRule struct { Condition string Action SchedulingAction Priority int Weight float64 }
// SchedulingAction defines scheduling actions type SchedulingAction int
const ( BoostAction SchedulingAction = iota ThrottleAction PreemptAction YieldAction MigrateAction )
// SchedulingHook defines scheduling hooks type SchedulingHook struct { Event SchedulingEvent Handler string Priority int Async bool }
// SchedulingEvent defines scheduling events type SchedulingEvent int
const ( ScheduleEvent SchedulingEvent = iota PreemptEvent WakeupEvent SleepEvent MigrateEvent )
// CPUThrottling contains CPU throttling configuration type CPUThrottling struct { Enabled bool Threshold float64 Algorithm ThrottlingAlgorithm Response ThrottlingResponse Recovery ThrottlingRecovery Monitoring ThrottlingMonitoring }
// ThrottlingAlgorithm defines throttling algorithms type ThrottlingAlgorithm int
const ( LinearThrottling ThrottlingAlgorithm = iota ExponentialThrottling AdaptiveThrottling PredictiveThrottling )
// ThrottlingResponse contains throttling response configuration type ThrottlingResponse struct { Immediate bool Gradual bool Delay time.Duration Steps []ThrottlingStep }
// ThrottlingStep defines throttling steps type ThrottlingStep struct { Level float64 Duration time.Duration Action ThrottlingAction }
// ThrottlingAction defines throttling actions type ThrottlingAction int
const ( ReduceFrequency ThrottlingAction = iota ReduceCores ReducePriority PauseExecution )
// ThrottlingRecovery contains throttling recovery configuration type ThrottlingRecovery struct { Enabled bool Strategy RecoveryStrategy Triggers []RecoveryTrigger Steps []RecoveryStep }
// RecoveryStrategy defines recovery strategies type RecoveryStrategy int
const ( GradualRecovery RecoveryStrategy = iota ImmediateRecovery AdaptiveRecovery ScheduledRecovery )
// RecoveryTrigger defines recovery triggers type RecoveryTrigger struct { Type TriggerType Condition string Threshold float64 Duration time.Duration }
// RecoveryStep defines recovery steps type RecoveryStep struct { Level float64 Duration time.Duration Action RecoveryAction }
// RecoveryAction defines recovery actions type RecoveryAction int
const ( RestoreFrequency RecoveryAction = iota RestoreCores RestorePriority ResumeExecution )
// ThrottlingMonitoring contains throttling monitoring configuration type ThrottlingMonitoring struct { Enabled bool Metrics []string Alerts []string History ThrottlingHistory Analysis ThrottlingAnalysis }
// ThrottlingHistory contains throttling history type ThrottlingHistory struct { Events []ThrottlingEvent Window time.Duration Analysis HistoryAnalysis Patterns HistoryPatterns }
// ThrottlingEvent defines throttling events type ThrottlingEvent struct { Timestamp time.Time Type ThrottlingEventType Level float64 Duration time.Duration Cause string Impact float64 }
// ThrottlingEventType defines throttling event types type ThrottlingEventType int
const ( ThrottleStartEvent ThrottlingEventType = iota ThrottleEndEvent LevelChangeEvent RecoveryEvent )
// HistoryAnalysis contains history analysis type HistoryAnalysis struct { Frequency float64 Duration time.Duration Severity float64 Trends []string Patterns []string Predictions []string }
// HistoryPatterns contains history patterns type HistoryPatterns struct { Temporal []TemporalPattern Load []LoadPattern Trigger []TriggerPattern Impact []ImpactPattern }
// TriggerPattern defines trigger patterns type TriggerPattern struct { Type string Frequency float64 Conditions []string Correlations []string }
// ImpactPattern defines impact patterns type ImpactPattern struct { Metric string Severity float64 Duration time.Duration Recovery time.Duration }
// ThrottlingAnalysis contains throttling analysis type ThrottlingAnalysis struct { Effectiveness float64 Impact ThrottlingImpact Optimization ThrottlingOptimization Recommendations []string }
// ThrottlingImpact contains throttling impact analysis type ThrottlingImpact struct { Performance float64 Throughput float64 Latency time.Duration Reliability float64 UserExperience float64 }
// ThrottlingOptimization contains throttling optimization type ThrottlingOptimization struct { Suggestions []OptimizationSuggestion Tuning []TuningRecommendation Automation []AutomationOpportunity }
// OptimizationSuggestion defines optimization suggestions type OptimizationSuggestion struct { Type SuggestionType Description string Impact float64 Effort float64 Priority int }
// SuggestionType defines suggestion types type SuggestionType int
const ( ConfigurationSuggestion SuggestionType = iota ArchitectureSuggestion AlgorithmSuggestion HardwareSuggestion )
// TuningRecommendation defines tuning recommendations type TuningRecommendation struct { Parameter string Current interface{} Suggested interface{} Reason string Impact float64 }
// AutomationOpportunity defines automation opportunities type AutomationOpportunity struct { Process string Type AutomationType Complexity float64 Benefit float64 ROI float64 }
// AutomationType defines automation types type AutomationType int
const ( RuleBasedAutomation AutomationType = iota MLBasedAutomation PolicyBasedAutomation WorkflowAutomation )
// CPUPowerManagement contains CPU power management configuration type CPUPowerManagement struct { Enabled bool Governor PowerGovernor Scaling PowerScaling States PowerStates Policies PowerPolicies Monitoring PowerMonitoring }
// PowerGovernor defines power governors type PowerGovernor int
const ( PerformanceGovernor PowerGovernor = iota PowersaveGovernor OndemandGovernor ConservativeGovernor UserSpaceGovernor SchedulutilGovernor )
// PowerScaling contains power scaling configuration type PowerScaling struct { MinFreq float64 MaxFreq float64 Step float64 UpThreshold float64 DownThreshold float64 SamplingRate time.Duration }
// PowerStates contains power states configuration type PowerStates struct { C0 PowerState C1 PowerState C2 PowerState C3 PowerState Deep PowerState Custom []PowerState }
// PowerState defines power states type PowerState struct { Name string Latency time.Duration PowerSaving float64 Residency time.Duration Disabled bool }
// PowerPolicies contains power policies type PowerPolicies struct { ThermalPolicy ThermalPolicy BalancePolicy BalancePolicy PerformancePolicy PerformancePolicy EfficiencyPolicy EfficiencyPolicy }
// ThermalPolicy contains thermal policy configuration type ThermalPolicy struct { Enabled bool Target float64 Threshold float64 Action ThermalAction Cooling CoolingStrategy }
// ThermalAction defines thermal actions type ThermalAction int
const ( ThrottleThermal ThermalAction = iota ShutdownThermal AlertThermal ScaleThermal )
// CoolingStrategy defines cooling strategies type CoolingStrategy int
const ( PassiveCooling CoolingStrategy = iota ActiveCooling HybridCooling AdaptiveCooling )
// BalancePolicy contains balance policy configuration type BalancePolicy struct { Performance float64 Power float64 Thermal float64 Noise float64 Adaptive bool }
// PerformancePolicy contains performance policy configuration type PerformancePolicy struct { Target float64 Minimum float64 Boost bool Turbo bool Hyperthreading bool }
// EfficiencyPolicy contains efficiency policy configuration type EfficiencyPolicy struct { Target float64 PowerBudget float64 PerfPerWatt float64 Optimization EfficiencyOptimization }
// EfficiencyOptimization defines efficiency optimization type EfficiencyOptimization struct { DVFS bool ClockGating bool PowerGating bool IdleStates bool }
// PowerMonitoring contains power monitoring configuration type PowerMonitoring struct { Enabled bool Interval time.Duration Metrics []PowerMetric Alerts []PowerAlert History PowerHistory }
// PowerMetric defines power metrics type PowerMetric struct { Name string Type MetricType Unit string Resolution float64 Range MetricRange }
// MetricRange defines metric ranges type MetricRange struct { Min float64 Max float64 Nominal float64 Warning float64 Critical float64 }
// PowerAlert defines power alerts type PowerAlert struct { Metric string Threshold float64 Direction AlertDirection Action AlertAction Severity AlertSeverity }
// AlertDirection defines alert directions type AlertDirection int
const ( AboveAlert AlertDirection = iota BelowAlert ChangeAlert TrendAlert )
// AlertSeverity defines alert severity levels type AlertSeverity int
const ( InfoAlert AlertSeverity = iota WarningAlert CriticalAlert EmergencyAlert )
// PowerHistory contains power history type PowerHistory struct { Window time.Duration Records []PowerRecord Analysis PowerAnalysis Trends PowerTrends }
// PowerRecord defines power records type PowerRecord struct { Timestamp time.Time Metrics map[string]float64 State PowerState Governor PowerGovernor Frequency float64 Voltage float64 }
// PowerAnalysis contains power analysis type PowerAnalysis struct { Efficiency float64 Optimization float64 Waste float64 Opportunities []string }
// PowerTrends contains power trends type PowerTrends struct { Consumption TrendAnalysis Efficiency TrendAnalysis Performance TrendAnalysis Temperature TrendAnalysis }
// Component implementations for the vertical scaler framework
// NewVerticalScaler creates a new vertical scaler func NewVerticalScaler(config VerticalScalingConfig) VerticalScaler { return &VerticalScaler{ config: config, resourceManager: &ResourceManager{}, performanceMonitor: &PerformanceMonitor{}, optimizationEngine: &OptimizationEngine{}, hardwareManager: &HardwareManager{}, memoryManager: &MemoryManager{}, cpuManager: &CPUManager{}, storageManager: &StorageManager{}, networkManager: &NetworkManager{}, profileAnalyzer: &ProfileAnalyzer{}, tuningEngine: &TuningEngine{}, metricsCollector: &MetricsCollector{}, alertManager: &AlertManager{}, costOptimizer: &CostOptimizer{}, predictionEngine: &PredictionEngine{}, automationManager: &AutomationManager{}, healthChecker: &HealthChecker{}, reportGenerator: &ReportGenerator{}, activeResources: make(map[string]ResourceInstance), scalingOperations: make(map[string]ScalingOperation), optimizations: make(map[string]Optimization), profiles: make(map[string]*PerformanceProfile), } }
// ScaleUp increases resources for better performance func (v VerticalScaler) ScaleUp(ctx context.Context, resourceType ResourceType, increase float64) (ScalingOperation, error) { v.mu.Lock() defer v.mu.Unlock()
fmt.Printf("Scaling up %s by %.2f%%\n", resourceType, increase*100)
// Create scaling operation
operation := &ScalingOperation{
ID: fmt.Sprintf("scaleup-%d", time.Now().Unix()),
Type: VerticalOperation,
Direction: ScaleUp,
StartTime: time.Now(),
Status: RunningOperation,
Progress: 0.0,
}
v.scalingOperations[operation.ID] = operation
// Perform resource scaling based on type
switch resourceType {
case CPUResource:
err := v.scaleCPU(ctx, increase)
if err != nil {
operation.Status = FailedOperation
return nil, fmt.Errorf("failed to scale CPU: %w", err)
}
case MemoryResource:
err := v.scaleMemory(ctx, increase)
if err != nil {
operation.Status = FailedOperation
return nil, fmt.Errorf("failed to scale memory: %w", err)
}
case StorageResource:
err := v.scaleStorage(ctx, increase)
if err != nil {
operation.Status = FailedOperation
return nil, fmt.Errorf("failed to scale storage: %w", err)
}
case NetworkResource:
err := v.scaleNetwork(ctx, increase)
if err != nil {
operation.Status = FailedOperation
return nil, fmt.Errorf("failed to scale network: %w", err)
}
default:
operation.Status = FailedOperation
return nil, fmt.Errorf("unsupported resource type: %v", resourceType)
}
operation.Status = CompletedOperation
operation.EndTime = time.Now()
operation.Progress = 100.0
fmt.Printf("Scale up completed for %s\n", resourceType)
return operation, nil
}
func (v VerticalScaler) scaleCPU(ctx context.Context, increase float64) error { // CPU scaling logic fmt.Printf("Increasing CPU resources by %.2f%%\n", increase100)
// Simulate CPU scaling
time.Sleep(time.Millisecond * 500)
// Update CPU configuration
runtime.GOMAXPROCS(runtime.GOMAXPROCS(0) + int(increase*float64(runtime.NumCPU())))
return nil
}
func (v VerticalScaler) scaleMemory(ctx context.Context, increase float64) error { // Memory scaling logic fmt.Printf("Increasing memory resources by %.2f%%\n", increase100)
// Simulate memory scaling
time.Sleep(time.Millisecond * 300)
// Trigger GC to optimize memory usage
runtime.GC()
return nil
}
func (v VerticalScaler) scaleStorage(ctx context.Context, increase float64) error { // Storage scaling logic fmt.Printf("Increasing storage resources by %.2f%%\n", increase100)
// Simulate storage scaling
time.Sleep(time.Millisecond * 800)
return nil
}
func (v VerticalScaler) scaleNetwork(ctx context.Context, increase float64) error { // Network scaling logic fmt.Printf("Increasing network resources by %.2f%%\n", increase100)
// Simulate network scaling
time.Sleep(time.Millisecond * 400)
return nil
}
// OptimizeResources performs intelligent resource optimization func (v VerticalScaler) OptimizeResources(ctx context.Context) (Optimization, error) { v.mu.Lock() defer v.mu.Unlock()
fmt.Println("Starting resource optimization")
optimization := &Optimization{
ID: fmt.Sprintf("opt-%d", time.Now().Unix()),
Type: PerformanceOptimization,
Status: RunningOptimization,
StartTime: time.Now(),
Progress: 0.0,
}
v.optimizations[optimization.ID] = optimization
// Analyze current performance
profile, err := v.analyzePerformance(ctx)
if err != nil {
optimization.Status = FailedOptimization
return nil, fmt.Errorf("failed to analyze performance: %w", err)
}
optimization.Progress = 25.0
// Generate optimization recommendations
recommendations := v.generateOptimizations(profile)
optimization.Progress = 50.0
// Apply optimizations
for _, rec := range recommendations {
err := v.applyOptimization(ctx, rec)
if err != nil {
fmt.Printf("Failed to apply optimization %s: %v\n", rec.Type, err)
}
}
optimization.Progress = 75.0
// Validate optimizations
err = v.validateOptimizations(ctx, optimization)
if err != nil {
optimization.Status = FailedOptimization
return nil, fmt.Errorf("optimization validation failed: %w", err)
}
optimization.Status = CompletedOptimization
optimization.EndTime = time.Now()
optimization.Progress = 100.0
fmt.Println("Resource optimization completed")
return optimization, nil
}
func (v VerticalScaler) analyzePerformance(ctx context.Context) (PerformanceProfile, error) { // Performance analysis logic profile := &PerformanceProfile{ ID: fmt.Sprintf("profile-%d", time.Now().Unix()), Timestamp: time.Now(), CPUUsage: 50.0, MemoryUsage: 60.0, NetworkUsage: 40.0, StorageUsage: 45.0, Bottlenecks: []string{"memory allocation", "I/O latency"}, }
v.profiles[profile.ID] = profile
return profile, nil
}
func (v VerticalScaler) generateOptimizations(profile PerformanceProfile) []OptimizationRecommendation { var recommendations []OptimizationRecommendation
// Generate CPU optimizations
if profile.CPUUsage > 80.0 {
recommendations = append(recommendations, OptimizationRecommendation{
Type: "cpu_scaling",
Priority: HighPriority,
Impact: 0.8,
Resource: "cpu",
Action: "scale_up",
Value: 0.2,
})
}
// Generate memory optimizations
if profile.MemoryUsage > 75.0 {
recommendations = append(recommendations, OptimizationRecommendation{
Type: "memory_scaling",
Priority: HighPriority,
Impact: 0.7,
Resource: "memory",
Action: "scale_up",
Value: 0.3,
})
}
return recommendations
}
func (v *VerticalScaler) applyOptimization(ctx context.Context, rec OptimizationRecommendation) error { // Apply optimization based on recommendation switch rec.Action { case "scale_up": switch rec.Resource { case "cpu": return v.scaleCPU(ctx, rec.Value) case "memory": return v.scaleMemory(ctx, rec.Value) case "storage": return v.scaleStorage(ctx, rec.Value) case "network": return v.scaleNetwork(ctx, rec.Value) } case "tune": return v.tuneResource(ctx, rec.Resource, rec.Value) case "optimize": return v.optimizeResource(ctx, rec.Resource) }
return nil
}
func (v *VerticalScaler) tuneResource(ctx context.Context, resource string, value float64) error { // Resource tuning logic fmt.Printf("Tuning %s with value %.2f\n", resource, value) return nil }
func (v *VerticalScaler) optimizeResource(ctx context.Context, resource string) error { // Resource optimization logic fmt.Printf("Optimizing %s\n", resource) return nil }
func (v VerticalScaler) validateOptimizations(ctx context.Context, optimization Optimization) error { // Validation logic fmt.Printf("Validating optimization %s\n", optimization.ID) return nil }
// Supporting types and interfaces type ResourceManager struct{} type PerformanceMonitor struct{} type OptimizationEngine struct{} type HardwareManager struct{} type MemoryManager struct{} type CPUManager struct{} type StorageManager struct{} type NetworkManager struct{} type ProfileAnalyzer struct{} type TuningEngine struct{} type MetricsCollector struct{} type AlertManager struct{} type CostOptimizer struct{} type PredictionEngine struct{} type AutomationManager struct{} type HealthChecker struct{} type ReportGenerator struct{}
type ResourceInstance struct { ID string Type ResourceType Capacity float64 Usage float64 Status ResourceStatus }
type ResourceStatus int
const ( AvailableResource ResourceStatus = iota InUseResource ExhaustedResource MaintenanceResource )
type ScalingOperation struct { ID string Type OperationType Direction ScalingDirection Target string StartTime time.Time EndTime time.Time Status OperationStatus Progress float64 }
type OperationType int
const ( HorizontalOperation OperationType = iota VerticalOperation HybridOperation )
type ScalingDirection int
const ( ScaleUp ScalingDirection = iota ScaleDown ScaleOut ScaleIn )
type OperationStatus int
const ( PendingOperation OperationStatus = iota RunningOperation CompletedOperation FailedOperation CancelledOperation )
type Optimization struct { ID string Type OptimizationType Status OptimizationStatus StartTime time.Time EndTime time.Time Progress float64 }
type OptimizationType int
const ( PerformanceOptimization OptimizationType = iota CostOptimization ResourceOptimization SecurityOptimization )
type OptimizationStatus int
const ( PendingOptimization OptimizationStatus = iota RunningOptimization CompletedOptimization FailedOptimization )
type PerformanceProfile struct { ID string Timestamp time.Time CPUUsage float64 MemoryUsage float64 NetworkUsage float64 StorageUsage float64 Bottlenecks []string }
type OptimizationRecommendation struct { Type string Priority Priority Impact float64 Resource string Action string Value float64 }
type Priority int
const ( LowPriority Priority = iota MediumPriority HighPriority CriticalPriority )
// Additional configuration types type OptimizationConfig struct{} type HardwareConfig struct{} type MemoryConfig struct{} type CPUConfig struct{} type TuningConfig struct{} type AutomationConfig struct{} type ReportingConfig struct{} type AlertingConfig struct{}
// Example usage func ExampleVerticalScaling() { config := VerticalScalingConfig{ ResourceConfig: ResourceConfig{ CPU: CPUResourceConfig{ Cores: 8, Frequency: 3.2, Architecture: X86_64Architecture, }, Memory: MemoryResourceConfig{ Size: 16 1024 1024 * 1024, // 16GB Type: "DDR4", }, }, }
scaler := NewVerticalScaler(config)
ctx := context.Background()
// Scale up CPU
operation, err := scaler.ScaleUp(ctx, CPUResource, 0.25)
if err != nil {
fmt.Printf("CPU scale up failed: %v\n", err)
return
}
fmt.Printf("CPU Scaling Operation - ID: %s, Status: %d, Progress: %.1f%%\n",
operation.ID, operation.Status, operation.Progress)
// Optimize resources
optimization, err := scaler.OptimizeResources(ctx)
if err != nil {
fmt.Printf("Resource optimization failed: %v\n", err)
return
}
fmt.Printf("Optimization - ID: %s, Status: %d, Progress: %.1f%%\n",
optimization.ID, optimization.Status, optimization.Progress)
} ```
Resource Optimization
Advanced resource optimization strategies for vertical scaling.
CPU Optimization
Comprehensive CPU optimization techniques including frequency scaling, core allocation, and instruction-level optimizations.
Memory Optimization
Advanced memory management including heap tuning, garbage collection optimization, and memory layout improvements.
Storage Optimization
Storage performance optimization including I/O scheduling, caching strategies, and storage tiering.
Network Optimization
Network performance optimization including buffer tuning, protocol optimization, and bandwidth management.
Hardware Acceleration
Hardware acceleration strategies for vertical scaling.
GPU Acceleration
GPU utilization for compute-intensive workloads and parallel processing.
FPGA Integration
FPGA acceleration for specialized workloads and custom processing.
ASIC Optimization
Application-specific integrated circuit optimization for targeted performance.
Specialized Processors
Utilization of specialized processors for specific workload types.
Performance Tuning
Comprehensive performance tuning strategies.
System-Level Tuning
Operating system and kernel-level performance optimizations.
Application-Level Tuning
Application-specific performance optimizations and code improvements.
Database Tuning
Database performance optimization including query optimization and index tuning.
Middleware Tuning
Middleware and framework performance optimizations.
Best Practices
- Baseline Measurement: Establish performance baselines before scaling
- Incremental Scaling: Use incremental scaling to avoid over-provisioning
- Monitoring: Implement comprehensive monitoring and alerting
- Cost Awareness: Balance performance gains with cost implications
- Resource Utilization: Optimize resource utilization efficiency
- Bottleneck Analysis: Identify and address performance bottlenecks
- Automated Tuning: Implement automated tuning for optimal performance
- Validation: Validate performance improvements after scaling
Summary
Vertical scaling provides powerful single-instance performance improvements:
- Resource Scaling: Intelligent scaling of CPU, memory, storage, and network resources
- Performance Optimization: Comprehensive optimization strategies for maximum efficiency
- Hardware Acceleration: Utilization of specialized hardware for performance gains
- Automated Tuning: Intelligent automation for optimal resource utilization
- Cost Optimization: Balance between performance and cost efficiency
- Monitoring: Real-time monitoring and performance analysis
These capabilities enable organizations to maximize single-instance performance while maintaining cost efficiency and resource optimization.