基本介绍

samples:

所有Golang程序都有这些公共指标。虽然标准库runtime/metrics包和promtheus SDK中也有很多Golang指标，但是核心的指标也就以下这些，后续不够的再增加即可。

指标概览

指标名称	指标类型	指标单位	Help信息	指标描述
`process.runtime.go.cgo.calls`	`Counter`		Number of cgo calls made by the current process	当前进程调用的`cgo`次数。
`process.runtime.go.gc.count`	`Counter`		Number of completed garbage collection cycles	已完成的 `gc` 周期的次数。
`process.runtime.go.gc.pause_ns`	`Histogram`	`ns`	Amount of nanoseconds in GC stop-the-world pauses	在`GC stop-the-world` 中暂停的纳秒数量。
`process.runtime.go.gc.pause_total_ns`

Histogram

`Counter`	`ns`	Cumulative nanoseconds in GC stop-the-world pauses since the program started	自程序启动以来，`GC stop-the-world` 的累计微秒计数。
`process.runtime.go.goroutines`	`Gauge`		Number of goroutines that currently exist	当前运行的协程数量。
`process.runtime.go.lookups`	`Counter`		Number of pointer lookups performed by the runtime	运行时执行的指针查询的数量。
`process.runtime.go.mem.heap_alloc`	`Gauge`	`bytes`	Bytes of allocated heap objects	分配的堆对象的字节数。
`process.runtime.go.mem.heap_idle`	`Gauge`	`bytes`	Bytes in idle (unused) spans	空闲（未使用）的堆内存。
`process.runtime.go.mem.heap_inuse`	`Gauge`	`bytes`	Bytes in in-use spans	已使用的堆内存。
`process.runtime.go.mem.heap_objects`	`Gauge`		Number of allocated heap objects	已分配的堆对象数量。
`process.runtime.go.mem.live_objects`	`Gauge`		Number of live objects is the number of cumulative Mallocs - Frees	存活对象数量(`Mallocs - Frees`)
`process.runtime.go.mem.heap_released`	`Gauge`	`bytes`	Bytes of idle spans whose physical memory has been returned to the OS	已交还给操作系统的堆内存。
`process.runtime.go.mem.heap_sys`	`Gauge`	`bytes`	Bytes of heap memory obtained from the OS	从操作系统获得的堆内存。
`process.runtime.uptime`	`Counter`	`ms`	Milliseconds since application was initialized	自应用程序被初始化以来的毫秒数。

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