diff options
Diffstat (limited to 'vendor/github.com/rcrowley/go-metrics/runtime.go')
| -rw-r--r-- | vendor/github.com/rcrowley/go-metrics/runtime.go | 212 |
1 files changed, 212 insertions, 0 deletions
diff --git a/vendor/github.com/rcrowley/go-metrics/runtime.go b/vendor/github.com/rcrowley/go-metrics/runtime.go new file mode 100644 index 000000000..11c6b785a --- /dev/null +++ b/vendor/github.com/rcrowley/go-metrics/runtime.go @@ -0,0 +1,212 @@ +package metrics + +import ( + "runtime" + "runtime/pprof" + "time" +) + +var ( + memStats runtime.MemStats + runtimeMetrics struct { + MemStats struct { + Alloc Gauge + BuckHashSys Gauge + DebugGC Gauge + EnableGC Gauge + Frees Gauge + HeapAlloc Gauge + HeapIdle Gauge + HeapInuse Gauge + HeapObjects Gauge + HeapReleased Gauge + HeapSys Gauge + LastGC Gauge + Lookups Gauge + Mallocs Gauge + MCacheInuse Gauge + MCacheSys Gauge + MSpanInuse Gauge + MSpanSys Gauge + NextGC Gauge + NumGC Gauge + GCCPUFraction GaugeFloat64 + PauseNs Histogram + PauseTotalNs Gauge + StackInuse Gauge + StackSys Gauge + Sys Gauge + TotalAlloc Gauge + } + NumCgoCall Gauge + NumGoroutine Gauge + NumThread Gauge + ReadMemStats Timer + } + frees uint64 + lookups uint64 + mallocs uint64 + numGC uint32 + numCgoCalls int64 + + threadCreateProfile = pprof.Lookup("threadcreate") +) + +// Capture new values for the Go runtime statistics exported in +// runtime.MemStats. This is designed to be called as a goroutine. +func CaptureRuntimeMemStats(r Registry, d time.Duration) { + for _ = range time.Tick(d) { + CaptureRuntimeMemStatsOnce(r) + } +} + +// Capture new values for the Go runtime statistics exported in +// runtime.MemStats. This is designed to be called in a background +// goroutine. Giving a registry which has not been given to +// RegisterRuntimeMemStats will panic. +// +// Be very careful with this because runtime.ReadMemStats calls the C +// functions runtime·semacquire(&runtime·worldsema) and runtime·stoptheworld() +// and that last one does what it says on the tin. +func CaptureRuntimeMemStatsOnce(r Registry) { + t := time.Now() + runtime.ReadMemStats(&memStats) // This takes 50-200us. + runtimeMetrics.ReadMemStats.UpdateSince(t) + + runtimeMetrics.MemStats.Alloc.Update(int64(memStats.Alloc)) + runtimeMetrics.MemStats.BuckHashSys.Update(int64(memStats.BuckHashSys)) + if memStats.DebugGC { + runtimeMetrics.MemStats.DebugGC.Update(1) + } else { + runtimeMetrics.MemStats.DebugGC.Update(0) + } + if memStats.EnableGC { + runtimeMetrics.MemStats.EnableGC.Update(1) + } else { + runtimeMetrics.MemStats.EnableGC.Update(0) + } + + runtimeMetrics.MemStats.Frees.Update(int64(memStats.Frees - frees)) + runtimeMetrics.MemStats.HeapAlloc.Update(int64(memStats.HeapAlloc)) + runtimeMetrics.MemStats.HeapIdle.Update(int64(memStats.HeapIdle)) + runtimeMetrics.MemStats.HeapInuse.Update(int64(memStats.HeapInuse)) + runtimeMetrics.MemStats.HeapObjects.Update(int64(memStats.HeapObjects)) + runtimeMetrics.MemStats.HeapReleased.Update(int64(memStats.HeapReleased)) + runtimeMetrics.MemStats.HeapSys.Update(int64(memStats.HeapSys)) + runtimeMetrics.MemStats.LastGC.Update(int64(memStats.LastGC)) + runtimeMetrics.MemStats.Lookups.Update(int64(memStats.Lookups - lookups)) + runtimeMetrics.MemStats.Mallocs.Update(int64(memStats.Mallocs - mallocs)) + runtimeMetrics.MemStats.MCacheInuse.Update(int64(memStats.MCacheInuse)) + runtimeMetrics.MemStats.MCacheSys.Update(int64(memStats.MCacheSys)) + runtimeMetrics.MemStats.MSpanInuse.Update(int64(memStats.MSpanInuse)) + runtimeMetrics.MemStats.MSpanSys.Update(int64(memStats.MSpanSys)) + runtimeMetrics.MemStats.NextGC.Update(int64(memStats.NextGC)) + runtimeMetrics.MemStats.NumGC.Update(int64(memStats.NumGC - numGC)) + runtimeMetrics.MemStats.GCCPUFraction.Update(gcCPUFraction(&memStats)) + + // <https://code.google.com/p/go/source/browse/src/pkg/runtime/mgc0.c> + i := numGC % uint32(len(memStats.PauseNs)) + ii := memStats.NumGC % uint32(len(memStats.PauseNs)) + if memStats.NumGC-numGC >= uint32(len(memStats.PauseNs)) { + for i = 0; i < uint32(len(memStats.PauseNs)); i++ { + runtimeMetrics.MemStats.PauseNs.Update(int64(memStats.PauseNs[i])) + } + } else { + if i > ii { + for ; i < uint32(len(memStats.PauseNs)); i++ { + runtimeMetrics.MemStats.PauseNs.Update(int64(memStats.PauseNs[i])) + } + i = 0 + } + for ; i < ii; i++ { + runtimeMetrics.MemStats.PauseNs.Update(int64(memStats.PauseNs[i])) + } + } + frees = memStats.Frees + lookups = memStats.Lookups + mallocs = memStats.Mallocs + numGC = memStats.NumGC + + runtimeMetrics.MemStats.PauseTotalNs.Update(int64(memStats.PauseTotalNs)) + runtimeMetrics.MemStats.StackInuse.Update(int64(memStats.StackInuse)) + runtimeMetrics.MemStats.StackSys.Update(int64(memStats.StackSys)) + runtimeMetrics.MemStats.Sys.Update(int64(memStats.Sys)) + runtimeMetrics.MemStats.TotalAlloc.Update(int64(memStats.TotalAlloc)) + + currentNumCgoCalls := numCgoCall() + runtimeMetrics.NumCgoCall.Update(currentNumCgoCalls - numCgoCalls) + numCgoCalls = currentNumCgoCalls + + runtimeMetrics.NumGoroutine.Update(int64(runtime.NumGoroutine())) + + runtimeMetrics.NumThread.Update(int64(threadCreateProfile.Count())) +} + +// Register runtimeMetrics for the Go runtime statistics exported in runtime and +// specifically runtime.MemStats. The runtimeMetrics are named by their +// fully-qualified Go symbols, i.e. runtime.MemStats.Alloc. +func RegisterRuntimeMemStats(r Registry) { + runtimeMetrics.MemStats.Alloc = NewGauge() + runtimeMetrics.MemStats.BuckHashSys = NewGauge() + runtimeMetrics.MemStats.DebugGC = NewGauge() + runtimeMetrics.MemStats.EnableGC = NewGauge() + runtimeMetrics.MemStats.Frees = NewGauge() + runtimeMetrics.MemStats.HeapAlloc = NewGauge() + runtimeMetrics.MemStats.HeapIdle = NewGauge() + runtimeMetrics.MemStats.HeapInuse = NewGauge() + runtimeMetrics.MemStats.HeapObjects = NewGauge() + runtimeMetrics.MemStats.HeapReleased = NewGauge() + runtimeMetrics.MemStats.HeapSys = NewGauge() + runtimeMetrics.MemStats.LastGC = NewGauge() + runtimeMetrics.MemStats.Lookups = NewGauge() + runtimeMetrics.MemStats.Mallocs = NewGauge() + runtimeMetrics.MemStats.MCacheInuse = NewGauge() + runtimeMetrics.MemStats.MCacheSys = NewGauge() + runtimeMetrics.MemStats.MSpanInuse = NewGauge() + runtimeMetrics.MemStats.MSpanSys = NewGauge() + runtimeMetrics.MemStats.NextGC = NewGauge() + runtimeMetrics.MemStats.NumGC = NewGauge() + runtimeMetrics.MemStats.GCCPUFraction = NewGaugeFloat64() + runtimeMetrics.MemStats.PauseNs = NewHistogram(NewExpDecaySample(1028, 0.015)) + runtimeMetrics.MemStats.PauseTotalNs = NewGauge() + runtimeMetrics.MemStats.StackInuse = NewGauge() + runtimeMetrics.MemStats.StackSys = NewGauge() + runtimeMetrics.MemStats.Sys = NewGauge() + runtimeMetrics.MemStats.TotalAlloc = NewGauge() + runtimeMetrics.NumCgoCall = NewGauge() + runtimeMetrics.NumGoroutine = NewGauge() + runtimeMetrics.NumThread = NewGauge() + runtimeMetrics.ReadMemStats = NewTimer() + + r.Register("runtime.MemStats.Alloc", runtimeMetrics.MemStats.Alloc) + r.Register("runtime.MemStats.BuckHashSys", runtimeMetrics.MemStats.BuckHashSys) + r.Register("runtime.MemStats.DebugGC", runtimeMetrics.MemStats.DebugGC) + r.Register("runtime.MemStats.EnableGC", runtimeMetrics.MemStats.EnableGC) + r.Register("runtime.MemStats.Frees", runtimeMetrics.MemStats.Frees) + r.Register("runtime.MemStats.HeapAlloc", runtimeMetrics.MemStats.HeapAlloc) + r.Register("runtime.MemStats.HeapIdle", runtimeMetrics.MemStats.HeapIdle) + r.Register("runtime.MemStats.HeapInuse", runtimeMetrics.MemStats.HeapInuse) + r.Register("runtime.MemStats.HeapObjects", runtimeMetrics.MemStats.HeapObjects) + r.Register("runtime.MemStats.HeapReleased", runtimeMetrics.MemStats.HeapReleased) + r.Register("runtime.MemStats.HeapSys", runtimeMetrics.MemStats.HeapSys) + r.Register("runtime.MemStats.LastGC", runtimeMetrics.MemStats.LastGC) + r.Register("runtime.MemStats.Lookups", runtimeMetrics.MemStats.Lookups) + r.Register("runtime.MemStats.Mallocs", runtimeMetrics.MemStats.Mallocs) + r.Register("runtime.MemStats.MCacheInuse", runtimeMetrics.MemStats.MCacheInuse) + r.Register("runtime.MemStats.MCacheSys", runtimeMetrics.MemStats.MCacheSys) + r.Register("runtime.MemStats.MSpanInuse", runtimeMetrics.MemStats.MSpanInuse) + r.Register("runtime.MemStats.MSpanSys", runtimeMetrics.MemStats.MSpanSys) + r.Register("runtime.MemStats.NextGC", runtimeMetrics.MemStats.NextGC) + r.Register("runtime.MemStats.NumGC", runtimeMetrics.MemStats.NumGC) + r.Register("runtime.MemStats.GCCPUFraction", runtimeMetrics.MemStats.GCCPUFraction) + r.Register("runtime.MemStats.PauseNs", runtimeMetrics.MemStats.PauseNs) + r.Register("runtime.MemStats.PauseTotalNs", runtimeMetrics.MemStats.PauseTotalNs) + r.Register("runtime.MemStats.StackInuse", runtimeMetrics.MemStats.StackInuse) + r.Register("runtime.MemStats.StackSys", runtimeMetrics.MemStats.StackSys) + r.Register("runtime.MemStats.Sys", runtimeMetrics.MemStats.Sys) + r.Register("runtime.MemStats.TotalAlloc", runtimeMetrics.MemStats.TotalAlloc) + r.Register("runtime.NumCgoCall", runtimeMetrics.NumCgoCall) + r.Register("runtime.NumGoroutine", runtimeMetrics.NumGoroutine) + r.Register("runtime.NumThread", runtimeMetrics.NumThread) + r.Register("runtime.ReadMemStats", runtimeMetrics.ReadMemStats) +} |