cpuallocator

Documentation

Index

• type AllocFlag
• type CPUAllocator
  • func NewCPUAllocator(sys sysfs.System) CPUAllocator
• type CPUPriority
  • func (p CPUPriority) String() string
• type IDFilter
• type IDSorter

Types

type AllocFlag

type AllocFlag uint

AllocFlag represents CPU allocation preferences.

const (
	// AllocIdlePackages requests allocation of full idle packages.
	AllocIdlePackages AllocFlag = 1 << iota
	// AllocIdleNodes requests allocation of full idle NUMA nodes.
	AllocIdleNodes
	// AllocIdleClusters requests allocation of full idle CPU clusters.
	AllocIdleClusters
	// AllocCacheGroups requests allocation and splitting of idle and used cache groups
	AllocCacheGroups
	// AllocIdleCores requests allocation of full idle cores (all threads in core).
	AllocIdleCores

	// AllocDefault is the default allocation preferences.
	AllocDefault = AllocIdlePackages | AllocIdleClusters | AllocCacheGroups | AllocIdleCores
)

type CPUAllocator

type CPUAllocator interface {
	AllocateCpus(from *cpuset.CPUSet, cnt int, prefer CPUPriority) (cpuset.CPUSet, error)
	ReleaseCpus(from *cpuset.CPUSet, cnt int, prefer CPUPriority) (cpuset.CPUSet, error)
	GetCPUPriorities() map[CPUPriority]cpuset.CPUSet
}

CPUAllocator is an interface for a generic CPU allocator

func NewCPUAllocator

func NewCPUAllocator(sys sysfs.System) CPUAllocator

NewCPUAllocator return a new cpuAllocator instance

type CPUPriority

type CPUPriority int

const (
	PriorityHigh CPUPriority = iota
	PriorityNormal
	PriorityLow
	NumCPUPriorities
	PriorityNone = NumCPUPriorities
)

func (CPUPriority) String

func (p CPUPriority) String() string

type IDFilter

type IDFilter func(idset.ID) bool

IDFilter helps filtering Ids.

type IDSorter

type IDSorter func(int, int) bool

IDSorter helps sorting Ids.