go-runtime-stats

go-runtime-stats - Golang package providing collecting go runtime stats (runtime.ReadMemStats()) and sending it to graphite server.

Download

go get github.com/jtaczanowski/go-runtime-stats

Example usage (also included in _example catalog):

package main

import (
	"time"

	"github.com/jtaczanowski/go-runtime-stats"
)

func main() {
	goruntimestats.Start(goruntimestats.Config{
		GraphiteHost:     "127.0.0.1",
		GraphitePort:     2003,
		GraphiteProtocol: "udp",
		GraphitePrefix:   "metrics.prefix",
		Interval:         time.Second * 60,
		HTTPOn:           true,
		HTTPPort:         9999,
	})

	// insted of empty select (used for block) put your code
	select {}
}

Example Grafana dashboard (JSON file included in _example catalog):

Metrics description:

Metric	Source	Description	Unit
cpu.count	runtime.runtime.NumCPU()	Number of machine CPU	number of CPUs
cpu.goroutines_number	runtime.NumGoroutine()	Number of goroutines	number
cpu.cgo_calls_number_delta	runtime.NumCgoCall()	Delta of Cgo calls from last collect interval	number
cpu.cgo_calls_number_total	runtime.NumCgoCall()	Summ of Cgo calls	number
mem.general.alloc_bytes	runtime.MemStats.Alloc	Alloc is bytes of allocated heap objects.	bytes
mem.general.total_bytes	runtime.MemStats.TotalAlloc	TotalAlloc is cumulative bytes allocated for heap objects.	bytes
mem.general.sys_bytes	runtime.MemStats.Sys	Sys is the total bytes of memory obtained from the OS.	bytes
mem.general.lookups_number_delta	runtime.MemStats.Lookups	Delta of Lookups from last collect interval	number
mem.general.mallocs_number_delta	runtime.MemStats.Mallocs	Delta of Mallocs from last collect interval	number
mem.general.frees_number_delta	runtime.MemStats.Frees	Delta of Frees from last collect interval	number
mem.general.lookups_number_total	runtime.MemStats.Lookups	Lookups is the number of pointer lookups performed by the runtime.	number
mem.general.mallocs_number_total	runtime.MemStats.Mallocs	Mallocs is the cumulative count of heap objects allocated.	number
mem.general.frees_number_total	runtime.MemStats.Frees	Frees is the cumulative count of heap objects freed.	number
mem.heap.alloc_bytes	runtime.MemStats.HeapAlloc	HeapAlloc is bytes of allocated heap objects.	bytes
mem.heap.sys_bytes	runtime.MemStats.HeapSys	HeapSys is bytes of heap memory obtained from the OS.	bytes
mem.heap.idle_bytes	runtime.MemStats.HeapIdle	HeapIdle is bytes in idle (unused) spans.	bytes
mem.heap.inuse_bytes	runtime.MemStats.HeapInuse	HeapInuse is bytes in in-use spans.	bytes
mem.heap.released_bytes	runtime.MemStats.HeapReleased	HeapReleased is bytes of physical memory returned to the OS.	bytes
mem.heap.objects_number	runtime.MemStats.HeapObjects	HeapObjects is the number of allocated heap objects.	number
mem.stack.inuse_bytes	runtime.MemStats.StackInuse	StackInuse is bytes in stack spans.	bytes
mem.stack.sys_bytes	runtime.MemStats.StackSys	StackSys is bytes of stack memory obtained from the OS.	bytes
mem.stack.mspan_inuse_bytes	runtime.MemStats.MSpanInuse	MSpanInuse is bytes of allocated mspan structures.	bytes
mem.stack.mspan_sys_bytes	runtime.MemStats.MSpanSys	MSpanSys is bytes of memory obtained from the OS for mspan structures.	bytes
mem.stack.mcache_inuse_bytes	runtime.MemStats.MCacheInuse	MCacheInuse is bytes of allocated mcache structures.	bytes
mem.stack.mcache_sys_bytes	runtime.MemStats.MCacheSys	MCacheSys is bytes of memory obtained from the OS for mcache structures.	bytes
mem.othersys_bytes	runtime.MemStats.OtherSys	OtherSys is bytes of memory in miscellaneous off-heap runtime allocations.	bytes
gc.sys_bytes	runtime.MemStats.GCSys	GCSys is bytes of memory in garbage collection metadata.	bytes
gc.next_bytes	runtime.MemStats.NextGC	NextGC is the target heap size of the next GC cycle.	bytes
gc.between_period_s	runtime.MemStats.LastGC	Between last two GC period	seconds
gc.time_from_last_gc_s	runtime.MemStats.LastGC	Seconds from last GC	seconds
gc.pause_ns_total_delta	runtime.MemStats.PauseTotalNs	PauseTotalNs delta in last collect interval	nanoseconds
gc.pause_ns_total	runtime.MemStats.PauseTotalNs	PauseTotalNs is the cumulative nanoseconds in GC stop-the-world pauses since the program started.	nanosecond
gc.pause_ns	runtime.MemStats.PauseNs	Last GC pause in last collect interval	nanoseconds
gc.pause_last_ns	runtime.MemStats.PauseNs	Last GC pause	nanosecond
gc.number_delta	runtime.MemStats.NumGC	Delta of GC cycles in last collect interval	number
gc.number_total	runtime.MemStats.NumGC	NumGC is the number of completed GC cycles.	number
gc.cpu_fraction_total	runtime.MemStats.GCCPUFraction	GCCPUFraction is the fraction of this program's available CPU time used by the GC since the program started.	number

All metrics are exposed on HTTP api. Default HTTP server settings: http://localhost:9999

root@alpine(ro):~# curl localhost:9999
{
  "cpu": {
    "cpu.count": 2,
    "cpu.goroutines_number": 6,
    "cpu.cgo_calls_number_delta": 0,
    "cpu.cgo_calls_number_total": 1
  },
  "memory": {
    "mem.general.alloc_bytes": 519688,
    "mem.general.total_bytes": 519688,
    "mem.general.sys_bytes": 69926912,
    "mem.general.lookups_number_delta": 0,
    "mem.general.mallocs_number_delta": 577,
    "mem.general.frees_number_delta": 71,
    "mem.general.lookups_number_total": 0,
    "mem.general.mallocs_number_total": 4277,
    "mem.general.frees_number_total": 489,
    "mem.heap.alloc_bytes": 519688,
    "mem.heap.sys_bytes": 66682880,
    "mem.heap.idle_bytes": 65470464,
    "mem.heap.inuse_bytes": 1212416,
    "mem.heap.released_bytes": 0,
    "mem.heap.objects_number": 3788,
    "mem.stack.inuse_bytes": 425984,
    "mem.stack.sys_bytes": 425984,
    "mem.stack.mspan_inuse_bytes": 19608,
    "mem.stack.mspan_sys_bytes": 32768,
    "mem.stack.mcache_inuse_bytes": 3456,
    "mem.stack.mcache_sys_bytes": 16384,
    "mem.othersys_bytes": 531848
  },
  "gc": {
    "gc.sys_bytes": 2234368,
    "gc.next_bytes": 4473924,
    "gc.between_period_s": 0,
    "gc.time_from_last_gc_s": 0,
    "gc.pause_ns_total_delta": 0,
    "gc.pause_ns_total": 0,
    "gc.pause_ns": 0,
    "gc.pause_last_ns": 0,
    "gc.number_delta": 0,
    "gc.number_total": 0,
    "gc.cpu_fraction_total": 0
  }
}

Inspired by https://github.com/tevjef/go-runtime-metrics and https://github.com/YoSmudge/go-stats