func initTaskMetrics() {
m := expvar.NewMap("tasks")
for k := range globalPeriodicJobRecipes {
taskDurations[k] = metrics.NewBiasedHistogram()
}
for k := range localPeriodicJobRecipes {
taskDurations[k] = metrics.NewBiasedHistogram()
}
for k, v := range taskDurations {
m.Set(k+"_ms", &metrics.HistogramExport{v,
[]float64{0.5, 0.9, 0.99, 0.999},
[]string{"p50", "p90", "p99", "p999"}})
}
}
func clientHTTPHisto(name string) metrics.Histogram {
histosMu.Lock()
defer histosMu.Unlock()
rv, ok := opshistos[name]
if !ok {
rv = metrics.NewBiasedHistogram()
opshistos[name] = rv
expOpsHistos.Set(name, &metrics.HistogramExport{rv,
[]float64{0.25, 0.5, 0.75, 0.90, 0.95, 0.99},
[]string{"p25", "p50", "p75", "p90", "p95", "p99"}})
}
return rv
}
func connPoolHisto(name string) metrics.Histogram {
histosMu.Lock()
defer histosMu.Unlock()
rv, ok := poolhistos[name]
if !ok {
rv = metrics.NewBiasedHistogram()
poolhistos[name] = rv
expPoolHistos.Set(name, &metrics.HistogramExport{
Histogram: rv,
Percentiles: []float64{0.25, 0.5, 0.75, 0.90, 0.99},
PercentileNames: []string{"p25", "p50", "p75", "p90", "p99"}})
}
return rv
}
flagGraphite = flag.String("g", "", "host:port for Graphite's Carbon")
flagLibratoUsername = flag.String("u", "", "librato metrics username")
flagLibratoToken = flag.String("t", "", "librato metrics token")
flagStatHatEmail = flag.String("s", "", "StatHat email")
)
var (
mu sync.Mutex
counters = make(map[string]int64)
histograms = make(map[string]metrics.Histogram)
percentiles = []float64{}
percentileNames = []string{}
statRequestCount = metrics.NewCounter()
statRequestRate = metrics.NewMeter()
statGraphiteLatency = metrics.NewBiasedHistogram()
statLibratoLatency = metrics.NewBiasedHistogram()
statStatHatLatency = metrics.NewBiasedHistogram()
)
func init() {
m := expvar.NewMap("metricsd")
m.Set("requests", statRequestCount)
m.Set("requests_per_sec", statRequestRate)
m.Set("graphite_latency_us", &metrics.HistogramExport{Histogram: statGraphiteLatency,
Percentiles: []float64{0.5, 0.9, 0.99, 0.999}, PercentileNames: []string{"p50", "p90", "p99", "p999"}})
m.Set("librato_latency_us", &metrics.HistogramExport{Histogram: statLibratoLatency,
Percentiles: []float64{0.5, 0.9, 0.99, 0.999}, PercentileNames: []string{"p50", "p90", "p99", "p999"}})
m.Set("stathat_latency_us", &metrics.HistogramExport{Histogram: statStatHatLatency,
Percentiles: []float64{0.5, 0.9, 0.99, 0.999}, PercentileNames: []string{"p50", "p90", "p99", "p999"}})
}
"net"
"net/http"
"strings"
"sync"
"time"
cb "github.com/couchbaselabs/go-couchbase"
_ "github.com/dustin/gomemcached/debug"
"github.com/samuel/go-metrics/metrics"
)
const minRecordRate = 4096
var (
taskDurations = map[string]metrics.Histogram{}
writeBytes = metrics.NewBiasedHistogram()
readBytes = metrics.NewBiasedHistogram()
cbHistos = map[string]metrics.Histogram{}
cbHistosMu = sync.Mutex{}
expHistos *expvar.Map
)
func init() {
m := expvar.NewMap("io")
m.Set("w_B", &metrics.HistogramExport{
Histogram: writeBytes,
Percentiles: []float64{0.1, 0.2, 0.80, 0.90, 0.99},
PercentileNames: []string{"p10", "p20", "p80", "p90", "p99"}})