metrics

Documentation

Overview

Package metrics provides a lot of tnet runtime monitoring data, such as monitoring the efficiency of batch reads and writes, which is a good tool for performance tuning.

Index

• Constants
• func Add(name int, delta uint64)
• func Get(name int) uint64
• func GetAll() [Max]uint64
• func ShowMetrics()
• func ShowMetricsOfPeriod(d time.Duration)

Constants

const (
	// TCP metrics
	TCPReadvCalls = iota
	TCPReadvFails
	TCPReadvBytes
	TCPWritevCalls
	TCPWritevFails
	TCPWritevBlocks
	TCPWriteNotify
	TCPOnWriteCalls
	TCPFlushCalls
	TCPConnsCreate
	TCPConnsClose
	TCPPostponeWriteOff
	TCPPostponeWriteOn

	// UDP metrics
	UDPRecvMMsgCalls
	UDPRecvMMsgFails
	UDPRecvMMsgPackets
	UDPWriteToCalls
	UDPWriteToFails
	UDPSendMMsgCalls
	UDPSendMMsgFails
	UDPSendMMsgPackets

	// Epoll metrics
	EpollWait
	EpollNoWait
	EpollEvents
	TaskAssigned
	Max
)

All metrics definitions.

Functions

func Add

func Add(name int, delta uint64)

Add metrics counter.

func Get

func Get(name int) uint64

Get one metric counter.

func GetAll

func GetAll() [Max]uint64

GetAll get all metrics.

func ShowMetrics

func ShowMetrics()

ShowMetrics shows metric info in console.

func ShowMetricsOfPeriod

func ShowMetricsOfPeriod(d time.Duration)

ShowMetricsOfPeriod shows metric info of duration d from now on. It will block d duration, and then prints metrics info.