performance

Documentation

Index

• type CPUMetrics
• type CPUUsage
• type DiskUsage
• type HostCPU
• type HostMemory
• type HostMetricsInfo
• type HostMetricsProvider
  • func NewHostMetricsProvider(c *vim25.Client) *HostMetricsProvider
  • func (h *HostMetricsProvider) GetMetricsForComputeResource(op trace.Operation, cr *object.ComputeResource) (map[string]*HostMetricsInfo, error)
  • func (h *HostMetricsProvider) GetMetricsForHosts(op trace.Operation, hosts []*object.HostSystem) (map[string]*HostMetricsInfo, error)
• type MemoryMetrics
• type MetricsProvider
• type Network
• type NetworkUsage
• type VMCollector
  • func NewVMCollector(session *session.Session) *VMCollector
  • func (vmc *VMCollector) Start()
  • func (vmc *VMCollector) Stop()
  • func (vmc *VMCollector) Subscribe(op trace.Operation, moref types.ManagedObjectReference, id string) (chan interface{}, error)
  • func (vmc *VMCollector) Unsubscribe(op trace.Operation, moref types.ManagedObjectReference, ch chan interface{})
• type VMMetrics
• type VirtualDisk

Types

type CPUMetrics

type CPUMetrics struct {
	// CPUs are the individual CPU metrics
	CPUs []CPUUsage
	// Usage is the percentage of total vm CPU usage
	Usage float32
}

CPUMetrics encapsulates available vm CPU metrics

type CPUUsage

type CPUUsage struct {
	// processor id (0,1,2)
	ID int
	// MhzUsage is the MhZ consumed by a specific processor
	MhzUsage int64
}

CPUUsage provides individual CPU metrics

type DiskUsage

type DiskUsage struct {
	Bytes uint64 // total bytes for interval
	Kbps  int64  // KiloBytesPerSecond for interval
	Op    uint64 // Operation count for interval
	Ops   int64  // Operations per second
}

DiskUsage provides detailed disk stats

type HostCPU

type HostCPU struct {
	UsagePercent float64
}

HostCPU stores an ESXi host's CPU metrics.

type HostMemory

type HostMemory struct {
	ActiveKB   int64
	ConsumedKB int64
	OverheadKB int64
	TotalKB    int64
}

HostMemory stores an ESXi host's memory metrics.

type HostMetricsInfo

type HostMetricsInfo struct {
	Memory HostMemory
	CPU    HostCPU
}

HostMetricsInfo stores an ESXi host's memory and CPU metrics.

type HostMetricsProvider

type HostMetricsProvider struct {
	*vim25.Client
}

HostMetricsProvider returns CPU and memory metrics for all ESXi hosts in a cluster via implementation of the MetricsProvider interface.

func NewHostMetricsProvider

func NewHostMetricsProvider(c *vim25.Client) *HostMetricsProvider

NewHostMetricsProvider returns a new instance of HostMetricsProvider.

func (*HostMetricsProvider) GetMetricsForComputeResource

func (h *HostMetricsProvider) GetMetricsForComputeResource(op trace.Operation, cr *object.ComputeResource) (map[string]*HostMetricsInfo, error)

GetMetricsForComputeResource gathers host metrics from the supplied compute resource. Returned map is keyed on the host ManagedObjectReference in string form.

func (*HostMetricsProvider) GetMetricsForHosts

func (h *HostMetricsProvider) GetMetricsForHosts(op trace.Operation, hosts []*object.HostSystem) (map[string]*HostMetricsInfo, error)

GetMetricsForHosts returns metrics pertaining to supplied ESX hosts. Returned map is keyed on the host ManagedObjectReference in string form.

type MemoryMetrics

type MemoryMetrics struct {
	// Consumed memory of vm in bytes
	Consumed int64
	// Active memory of vm in bytes
	Active int64
	// Provisioned memory of vm in bytes
	Provisioned int64
}

MemoryMetrics encapsulates available vm memory metrics

type MetricsProvider

type MetricsProvider interface {
	// GetMetricsForComputeResource returns metrics for a particular compute resource. The metrics are
	// returned in a map of HostMetricsInfo keyed on host ManagedObjectReferences.
	GetMetricsForComputeResource(trace.Operation, *object.ComputeResource) (map[string]*HostMetricsInfo, error)

	// GetMetricsForHosts returns metrics pertaining to supplied ESX hosts.
	GetMetricsForHosts(trace.Operation, []*object.HostSystem) (map[string]*HostMetricsInfo, error)
}

MetricsProvider defines the interface for providing metrics.

type Network

type Network struct {
	Name string
	Rx   NetworkUsage
	Tx   NetworkUsage
}

Network provides metrics for individual network devices

type NetworkUsage

type NetworkUsage struct {
	Bytes   uint64 // total bytes
	Kbps    int64  // KiloBytesPerSecond
	Packets int64  // total packet count
	Errors  int64  // NOT CURRENTLY IMPLEMENTED
	Dropped int64  // total dropped packet count
}

NetworkUsage provides detailed network stats

type VMCollector

type VMCollector struct {
	// contains filtered or unexported fields
}

VMCollector is the VM metrics collector

func NewVMCollector

func NewVMCollector(session *session.Session) *VMCollector

newVMCollector will instantiate a new collector responsible for gathering VM metrics

func (*VMCollector) Start

func (vmc *VMCollector) Start()

Start will begin the collection polling process

func (*VMCollector) Stop

func (vmc *VMCollector) Stop()

Stop will stop the collection polling process

func (*VMCollector) Subscribe

func (vmc *VMCollector) Subscribe(op trace.Operation, moref types.ManagedObjectReference, id string) (chan interface{}, error)

Subscribe to a vm metric subscription

func (*VMCollector) Unsubscribe

func (vmc *VMCollector) Unsubscribe(op trace.Operation, moref types.ManagedObjectReference, ch chan interface{})

Unsubscribe from a vm metric subscription. The subscriber channel will be evicted and when no subscribers remain the subscription will be removed.

type VMMetrics

type VMMetrics struct {
	CPU        CPUMetrics
	Memory     MemoryMetrics
	Networks   []Network
	Disks      []VirtualDisk
	SampleTime time.Time
	// interval of collection in seconds
	Interval int32
}

VMMetrics encapsulates the available metrics

type VirtualDisk

type VirtualDisk struct {
	Name  string
	Write DiskUsage
	Read  DiskUsage
}

VirtualDisk provides metrics for individual disks