memory

Documentation

Index

• Constants
• func NewNumaMemoryPressureEvictionPlugin(_ *client.GenericClientSet, _ events.EventRecorder, ...) plugin.EvictionPlugin
• func NewRssOveruseEvictionPlugin(_ *client.GenericClientSet, _ events.EventRecorder, ...) plugin.EvictionPlugin
• func NewSystemPressureEvictionPlugin(_ *client.GenericClientSet, _ events.EventRecorder, ...) plugin.EvictionPlugin
• type EvictionHelper
  • func NewEvictionHelper(emitter metrics.MetricEmitter, metaServer *metaserver.MetaServer, ...) *EvictionHelper
• type NumaMemoryPressurePlugin
  • func (n *NumaMemoryPressurePlugin) GetEvictPods(_ context.Context, request *pluginapi.GetEvictPodsRequest) (*pluginapi.GetEvictPodsResponse, error)
  • func (n *NumaMemoryPressurePlugin) GetTopEvictionPods(_ context.Context, request *pluginapi.GetTopEvictionPodsRequest) (*pluginapi.GetTopEvictionPodsResponse, error)
  • func (n *NumaMemoryPressurePlugin) Name() string
  • func (n *NumaMemoryPressurePlugin) Start()
  • func (n *NumaMemoryPressurePlugin) ThresholdMet(_ context.Context) (*pluginapi.ThresholdMetResponse, error)
• type RssOveruseEvictionPlugin
  • func (r *RssOveruseEvictionPlugin) GetEvictPods(_ context.Context, request *pluginapi.GetEvictPodsRequest) (*pluginapi.GetEvictPodsResponse, error)
  • func (r *RssOveruseEvictionPlugin) GetTopEvictionPods(_ context.Context, _ *pluginapi.GetTopEvictionPodsRequest) (*pluginapi.GetTopEvictionPodsResponse, error)
  • func (r *RssOveruseEvictionPlugin) Name() string
  • func (r *RssOveruseEvictionPlugin) Start()
  • func (r *RssOveruseEvictionPlugin) ThresholdMet(_ context.Context) (*pluginapi.ThresholdMetResponse, error)
• type SystemPressureEvictionPlugin
  • func (s *SystemPressureEvictionPlugin) GetEvictPods(_ context.Context, request *pluginapi.GetEvictPodsRequest) (*pluginapi.GetEvictPodsResponse, error)
  • func (s *SystemPressureEvictionPlugin) GetTopEvictionPods(_ context.Context, request *pluginapi.GetTopEvictionPodsRequest) (*pluginapi.GetTopEvictionPodsResponse, error)
  • func (s *SystemPressureEvictionPlugin) Name() string
  • func (s *SystemPressureEvictionPlugin) Start()
  • func (s *SystemPressureEvictionPlugin) ThresholdMet(_ context.Context) (*pluginapi.ThresholdMetResponse, error)

Constants

const (
	EvictionPluginNameNumaMemoryPressure = "numa-memory-pressure-eviction-plugin"
	EvictionScopeNumaMemory              = "NumaMemory"
)

const (
	EvictionPluginNameRssOveruse = "rss-overuse-eviction-plugin"

	RssOveruseEvictionReason = "hit rss overuse policy, threshold is %.2f, current pod rss is %.2f, pod memory request is %d"
)

const (
	EvictionPluginNameSystemMemoryPressure = "system-memory-pressure-eviction-plugin"
	EvictionScopeSystemMemory              = "SystemMemory"
)

Functions

func NewNumaMemoryPressureEvictionPlugin

func NewNumaMemoryPressureEvictionPlugin(_ *client.GenericClientSet, _ events.EventRecorder,
	metaServer *metaserver.MetaServer, emitter metrics.MetricEmitter, conf *config.Configuration,
) plugin.EvictionPlugin

NewNumaMemoryPressureEvictionPlugin returns a new MemoryPressureEvictionPlugin

func NewRssOveruseEvictionPlugin

func NewRssOveruseEvictionPlugin(_ *client.GenericClientSet, _ events.EventRecorder,
	metaServer *metaserver.MetaServer, emitter metrics.MetricEmitter, conf *config.Configuration,
) plugin.EvictionPlugin

func NewSystemPressureEvictionPlugin

func NewSystemPressureEvictionPlugin(_ *client.GenericClientSet, _ events.EventRecorder,
	metaServer *metaserver.MetaServer, emitter metrics.MetricEmitter, conf *config.Configuration,
) plugin.EvictionPlugin

Types

type EvictionHelper

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

EvictionHelper is a general tool collection for all memory eviction plugin

func NewEvictionHelper

func NewEvictionHelper(emitter metrics.MetricEmitter, metaServer *metaserver.MetaServer, conf *config.Configuration) *EvictionHelper

type NumaMemoryPressurePlugin

type NumaMemoryPressurePlugin struct {
	*process.StopControl
	// contains filtered or unexported fields
}

NumaMemoryPressurePlugin implements the EvictionPlugin interface It triggers pod eviction based on the numa node pressure

func (*NumaMemoryPressurePlugin) GetEvictPods

func (n *NumaMemoryPressurePlugin) GetEvictPods(_ context.Context, request *pluginapi.GetEvictPodsRequest) (*pluginapi.GetEvictPodsResponse, error)

func (*NumaMemoryPressurePlugin) GetTopEvictionPods

func (n *NumaMemoryPressurePlugin) GetTopEvictionPods(_ context.Context, request *pluginapi.GetTopEvictionPodsRequest) (*pluginapi.GetTopEvictionPodsResponse, error)

func (*NumaMemoryPressurePlugin) Name

func (n *NumaMemoryPressurePlugin) Name() string

func (*NumaMemoryPressurePlugin) Start

func (n *NumaMemoryPressurePlugin) Start()

func (*NumaMemoryPressurePlugin) ThresholdMet

func (n *NumaMemoryPressurePlugin) ThresholdMet(_ context.Context) (*pluginapi.ThresholdMetResponse, error)

type RssOveruseEvictionPlugin

type RssOveruseEvictionPlugin struct {
	*process.StopControl
	// contains filtered or unexported fields
}

RssOveruseEvictionPlugin implements the EvictPlugin interface. It triggers pod eviction based on the rss usage ratio. Once a pod use more rss than the specified threshold, this plugin will evict the pod.The threshold is calculated based on pod's memory request. Its main goal is to make sure sufficient memory for page cache in some scenarios in which service use page cache to improve performance.

func (*RssOveruseEvictionPlugin) GetEvictPods

func (r *RssOveruseEvictionPlugin) GetEvictPods(_ context.Context, request *pluginapi.GetEvictPodsRequest) (*pluginapi.GetEvictPodsResponse, error)

func (*RssOveruseEvictionPlugin) GetTopEvictionPods

func (r *RssOveruseEvictionPlugin) GetTopEvictionPods(_ context.Context, _ *pluginapi.GetTopEvictionPodsRequest) (*pluginapi.GetTopEvictionPodsResponse, error)

func (*RssOveruseEvictionPlugin) Name

func (r *RssOveruseEvictionPlugin) Name() string

func (*RssOveruseEvictionPlugin) Start

func (r *RssOveruseEvictionPlugin) Start()

func (*RssOveruseEvictionPlugin) ThresholdMet

func (r *RssOveruseEvictionPlugin) ThresholdMet(_ context.Context) (*pluginapi.ThresholdMetResponse, error)

type SystemPressureEvictionPlugin

type SystemPressureEvictionPlugin struct {
	*process.StopControl
	sync.Mutex
	// contains filtered or unexported fields
}

SystemPressureEvictionPlugin implements the EvictPlugin interface. It triggers pod eviction based on the system pressure of memory.

func (*SystemPressureEvictionPlugin) GetEvictPods

func (s *SystemPressureEvictionPlugin) GetEvictPods(_ context.Context, request *pluginapi.GetEvictPodsRequest) (*pluginapi.GetEvictPodsResponse, error)

func (*SystemPressureEvictionPlugin) GetTopEvictionPods

func (s *SystemPressureEvictionPlugin) GetTopEvictionPods(_ context.Context, request *pluginapi.GetTopEvictionPodsRequest) (*pluginapi.GetTopEvictionPodsResponse, error)

func (*SystemPressureEvictionPlugin) Name

func (s *SystemPressureEvictionPlugin) Name() string

func (*SystemPressureEvictionPlugin) Start

func (s *SystemPressureEvictionPlugin) Start()

func (*SystemPressureEvictionPlugin) ThresholdMet

func (s *SystemPressureEvictionPlugin) ThresholdMet(_ context.Context) (*pluginapi.ThresholdMetResponse, error)