memwatch

package
v1.25.1 Latest Latest
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Published: May 17, 2024 License: BSD-3-Clause Imports: 12 Imported by: 1

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Index

Constants

View Source
const (
	B   = 1
	KiB = 1 << (10 * iota) // 2^10
	MiB = 1 << (10 * iota) // 2^20
	GiB = 1 << (10 * iota) // 2^30
	TiB = 1 << (10 * iota) // 2^40
)

Variables

View Source
var (
	ErrNotEnoughMemory   = fmt.Errorf("not enough memory")
	ErrNotEnoughMappings = fmt.Errorf("not enough memory mappings")
)

Functions

func EstimateObjectDeleteMemory added in v1.24.9

func EstimateObjectDeleteMemory() int64

func EstimateObjectMemory added in v1.24.9

func EstimateObjectMemory(object *models.Object) int64

func LiveHeapReader added in v1.22.5

func LiveHeapReader() int64

Types

type AllocChecker added in v1.24.9

type AllocChecker interface {
	CheckAlloc(sizeInBytes int64) error
	CheckMappingAndReserve(numberMappings int64, reservationTimeInS int) error
	Refresh()
}

type Monitor

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

Monitor allows making statements about the memory ratio used by the application

func NewDummyMonitor added in v1.24.9

func NewDummyMonitor() *Monitor

func NewMonitor

func NewMonitor(metricsReader metricsReader, limitSetter limitSetter,
	maxRatio float64,
) *Monitor

NewMonitor creates a Monitor with the given metrics reader and target ratio

Typically this would be called with LiveHeapReader and debug.SetMemoryLimit

func (*Monitor) CheckAlloc added in v1.22.0

func (m *Monitor) CheckAlloc(sizeInBytes int64) error

func (*Monitor) CheckMappingAndReserve added in v1.24.9

func (m *Monitor) CheckMappingAndReserve(numberMappings int64, reservationTimeInS int) error

func (*Monitor) Ratio

func (m *Monitor) Ratio() float64

func (*Monitor) Refresh added in v1.22.0

func (m *Monitor) Refresh()

Refresh retrieves the current memory stats from the runtime and stores them in the local cache

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