forked from mirror/client_golang
use counters where applicable, improve descriptions
This commit is contained in:
Kevin Pike
parent
8a6e3ecf23
commit
b14b149930
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@ -9,9 +9,20 @@ import (
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)
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type goCollector struct {
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*memStatsCollector
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goroutines Gauge
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gcDesc *Desc
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goroutines Gauge
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gcDesc *Desc
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alloc prometheus.Gauge
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totalAlloc prometheus.Gauge
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sys prometheus.Gauge
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lookups prometheus.Gauge
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mallocs prometheus.Gauge
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frees prometheus.Gauge
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heapAlloc prometheus.Gauge
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heapSys prometheus.Gauge
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heapIdle prometheus.Gauge
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heapInuse prometheus.Gauge
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heapReleased prometheus.Gauge
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heapObjects prometheus.Gauge
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}
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// NewGoCollector returns a collector which exports metrics about the current
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@ -26,7 +37,78 @@ func NewGoCollector() *goCollector {
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"go_gc_duration_seconds",
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"A summary of the GC invocation durations.",
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nil, nil),
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memStatsCollector: newMemStatsCollector(),
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alloc: prometheus.NewGauge(prometheus.GaugeOpts{
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Namespace: "go",
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Subsystem: "memstats",
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Name: "alloc_bytes",
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Help: "Number of bytes allocated and still in use.",
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}),
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totalAlloc: prometheus.NewCounter(prometheus.CounterOpts{
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Namespace: "go",
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Subsystem: "memstats",
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Name: "alloc_bytes_total",
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Help: "Total number of bytes allocated, even if freed.",
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}),
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sys: prometheus.NewGauge(prometheus.GaugeOpts{
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Namespace: "go",
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Subsystem: "memstats",
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Name: "sys_bytes",
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Help: "Number of bytes obtained from system",
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}),
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lookups: prometheus.NewCounter(prometheus.CounterOpts{
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Namespace: "go",
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Subsystem: "memstats",
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Name: "lookups_total",
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Help: "Total number of pointer lookups.",
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}),
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mallocs: prometheus.NewCounter(prometheus.CounterOpts{
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Namespace: "go",
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Subsystem: "memstats",
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Name: "mallocs_total",
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Help: "Total number of mallocs.",
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}),
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frees: prometheus.NewCounter(prometheus.CounterOpts{
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Namespace: "go",
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Subsystem: "memstats",
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Name: "frees_total",
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Help: "Total number of frees.",
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}),
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heapAlloc: prometheus.NewGauge(prometheus.GaugeOpts{
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Namespace: "go",
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Subsystem: "memstats",
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Name: "heap_alloc_bytes",
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Help: "Number heap bytes allocated and still in use.",
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}),
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heapSys: prometheus.NewCounter(prometheus.GaugeOpts{
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Namespace: "go",
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Subsystem: "memstats",
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Name: "heap_sys_bytes",
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Help: "Total bytes in heap obtained from system.",
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}),
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heapIdle: prometheus.NewGauge(prometheus.GaugeOpts{
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Namespace: "go",
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Subsystem: "memstats",
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Name: "heap_idle_bytes",
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Help: "Number bytes in heap waiting to be used.",
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}),
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heapInuse: prometheus.NewGauge(prometheus.GaugeOpts{
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Namespace: "go",
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Subsystem: "memstats",
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Name: "heap_inuse_bytes",
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Help: "Number of bytes in heap that are in use.",
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}),
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heapReleased: prometheus.NewGauge(prometheus.GaugeOpts{
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Namespace: "go",
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Subsystem: "memstats",
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Name: "heap_released_bytes",
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Help: "Number of bytes in heap released to OS.",
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}),
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heapObjects: prometheus.NewGauge(prometheus.GaugeOpts{
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Namespace: "go",
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Subsystem: "memstats",
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Name: "heap_objects",
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Help: "Number of allocated objects.",
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}),
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}
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}
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@ -34,6 +116,18 @@ func NewGoCollector() *goCollector {
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func (c *goCollector) Describe(ch chan<- *Desc) {
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ch <- c.goroutines.Desc()
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ch <- c.gcDesc
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ch <- m.alloc.Desc()
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ch <- m.totalAlloc.Desc()
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ch <- m.sys.Desc()
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ch <- m.lookups.Desc()
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ch <- m.mallocs.Desc()
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ch <- m.frees.Desc()
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ch <- m.heapAlloc.Desc()
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ch <- m.heapSys.Desc()
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ch <- m.heapIdle.Desc()
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ch <- m.heapInuse.Desc()
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ch <- m.heapReleased.Desc()
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ch <- m.heapObjects.Desc()
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}
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// Collect returns the current state of all metrics of the collector.
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@ -51,128 +145,6 @@ func (c *goCollector) Collect(ch chan<- Metric) {
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}
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quantiles[0.0] = stats.PauseQuantiles[0].Seconds()
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ch <- MustNewConstSummary(c.gcDesc, uint64(stats.NumGC), float64(stats.PauseTotal.Seconds()), quantiles)
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}
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// memStatsCollector collects runtime.MemStats
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type memStatsCollector struct {
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alloc prometheus.Gauge
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totalAlloc prometheus.Gauge
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sys prometheus.Gauge
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lookups prometheus.Gauge
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mallocs prometheus.Gauge
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frees prometheus.Gauge
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heapAlloc prometheus.Gauge
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heapSys prometheus.Gauge
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heapIdle prometheus.Gauge
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heapInuse prometheus.Gauge
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heapReleased prometheus.Gauge
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heapObjects prometheus.Gauge
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}
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// newMemStatsCollector creates a new runtime.MemStats collector
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func newMemStatsCollector() *memStatsCollector {
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return &MemStatsCollector{
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alloc: prometheus.NewGauge(prometheus.GaugeOpts{
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Namespace: "go",
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Subsystem: "memstats",
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Name: "alloc_bytes",
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Help: "bytes allocated and still in use",
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}),
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totalAlloc: prometheus.NewGauge(prometheus.GaugeOpts{
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Namespace: "go",
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Subsystem: "memstats",
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Name: "alloc_bytes_total",
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Help: "bytes allocated (even if freed)",
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}),
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sys: prometheus.NewGauge(prometheus.GaugeOpts{
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Namespace: "go",
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Subsystem: "memstats",
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Name: "sys",
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Help: "bytes obtained from system",
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}),
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lookups: prometheus.NewGauge(prometheus.GaugeOpts{
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Namespace: "go",
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Subsystem: "memstats",
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Name: "lookups",
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Help: "number of pointer lookups",
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}),
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mallocs: prometheus.NewGauge(prometheus.GaugeOpts{
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Namespace: "go",
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Subsystem: "memstats",
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Name: "mallocs",
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Help: "number of mallocs",
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}),
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frees: prometheus.NewGauge(prometheus.GaugeOpts{
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Namespace: "go",
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Subsystem: "memstats",
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Name: "frees",
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Help: "number of frees",
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}),
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heapAlloc: prometheus.NewGauge(prometheus.GaugeOpts{
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Namespace: "go",
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Subsystem: "memstats",
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Name: "heap_alloc",
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Help: "bytes allocated and still in use",
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}),
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heapSys: prometheus.NewGauge(prometheus.GaugeOpts{
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Namespace: "go",
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Subsystem: "memstats",
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Name: "heap_sys",
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Help: "bytes obtained from system",
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}),
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heapIdle: prometheus.NewGauge(prometheus.GaugeOpts{
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Namespace: "go",
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Subsystem: "memstats",
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Name: "heap_idle",
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Help: "bytes in idle spans",
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}),
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heapInuse: prometheus.NewGauge(prometheus.GaugeOpts{
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Namespace: "go",
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Subsystem: "memstats",
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Name: "heap_inuse",
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Help: "bytes in non-idle span",
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}),
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heapReleased: prometheus.NewGauge(prometheus.GaugeOpts{
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Namespace: "go",
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Subsystem: "memstats",
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Name: "heap_released",
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Help: "bytes released to the OS",
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}),
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heapObjects: prometheus.NewGauge(prometheus.GaugeOpts{
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Namespace: "go",
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Subsystem: "memstats",
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Name: "heap_objects",
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Help: "total number of allocated objects",
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}),
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}
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}
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// Describe sends Desc objects for each memstat we intend to collect.
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func (m *MemStatsCollector) Describe(ch chan<- *prometheus.Desc) {
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if m == nil {
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m = NewMemStatsCollector()
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}
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ch <- m.alloc.Desc()
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ch <- m.totalAlloc.Desc()
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ch <- m.sys.Desc()
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ch <- m.lookups.Desc()
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ch <- m.mallocs.Desc()
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ch <- m.frees.Desc()
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ch <- m.heapAlloc.Desc()
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ch <- m.heapSys.Desc()
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ch <- m.heapIdle.Desc()
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ch <- m.heapInuse.Desc()
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ch <- m.heapReleased.Desc()
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ch <- m.heapObjects.Desc()
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}
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// Collect does the trick by calling ReadMemStats once and then constructing
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// three different Metrics on the fly.
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func (m *MemStatsCollector) Collect(ch chan<- prometheus.Metric) {
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if m == nil {
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m = NewMemStatsCollector()
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}
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var ms runtime.MemStats
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runtime.ReadMemStats(&ms)
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