Golang NewHistogram Examples

Example #1

File: query_engine.go Project: CERN-Stage-3/vitess

func NewQueryEngine(config Config) *QueryEngine {
	qe := &QueryEngine{}
	qe.cachePool = NewCachePool("CachePool", config.RowCache, time.Duration(config.QueryTimeout*1e9), time.Duration(config.IdleTimeout*1e9))
	qe.schemaInfo = NewSchemaInfo(config.QueryCacheSize, time.Duration(config.SchemaReloadTime*1e9), time.Duration(config.IdleTimeout*1e9))
	qe.connPool = NewConnectionPool("ConnPool", config.PoolSize, time.Duration(config.IdleTimeout*1e9))
	qe.streamConnPool = NewConnectionPool("StreamConnPool", config.StreamPoolSize, time.Duration(config.IdleTimeout*1e9))
	qe.streamTokens = sync2.NewSemaphore(config.StreamExecThrottle, time.Duration(config.StreamWaitTimeout*1e9))
	qe.reservedPool = NewReservedPool("ReservedPool")
	qe.txPool = NewConnectionPool("TxPool", config.TransactionCap, time.Duration(config.IdleTimeout*1e9)) // connections in pool has to be > transactionCap
	qe.activeTxPool = NewActiveTxPool("ActiveTxPool", time.Duration(config.TransactionTimeout*1e9))
	qe.activePool = NewActivePool("ActivePool", time.Duration(config.QueryTimeout*1e9), time.Duration(config.IdleTimeout*1e9))
	qe.consolidator = NewConsolidator()
	qe.spotCheckFreq = sync2.AtomicInt64(config.SpotCheckRatio * SPOT_CHECK_MULTIPLIER)
	qe.maxResultSize = sync2.AtomicInt64(config.MaxResultSize)
	qe.streamBufferSize = sync2.AtomicInt64(config.StreamBufferSize)
	stats.Publish("MaxResultSize", stats.IntFunc(qe.maxResultSize.Get))
	stats.Publish("StreamBufferSize", stats.IntFunc(qe.streamBufferSize.Get))
	queryStats = stats.NewTimings("Queries")
	stats.NewRates("QPS", queryStats, 15, 60e9)
	waitStats = stats.NewTimings("Waits")
	killStats = stats.NewCounters("Kills")
	errorStats = stats.NewCounters("Errors")
	resultStats = stats.NewHistogram("Results", resultBuckets)
	stats.Publish("SpotCheckRatio", stats.FloatFunc(func() float64 {
		return float64(qe.spotCheckFreq.Get()) / SPOT_CHECK_MULTIPLIER
	}))
	spotCheckCount = stats.NewInt("SpotCheckCount")
	return qe
}

Example #2

File: query_service_stats.go Project: Rastusik/vitess

// NewQueryServiceStats returns a new QueryServiceStats instance.
func NewQueryServiceStats(statsPrefix string, enablePublishStats bool) *QueryServiceStats {
	mysqlStatsName := ""
	queryStatsName := ""
	qpsRateName := ""
	waitStatsName := ""
	killStatsName := ""
	infoErrorsName := ""
	errorStatsName := ""
	internalErrorsName := ""
	resultStatsName := ""
	spotCheckCountName := ""
	userTableQueryCountName := ""
	userTableQueryTimesNsName := ""
	userTransactionCountName := ""
	userTransactionTimesNsName := ""
	if enablePublishStats {
		mysqlStatsName = statsPrefix + "Mysql"
		queryStatsName = statsPrefix + "Queries"
		qpsRateName = statsPrefix + "QPS"
		waitStatsName = statsPrefix + "Waits"
		killStatsName = statsPrefix + "Kills"
		infoErrorsName = statsPrefix + "InfoErrors"
		errorStatsName = statsPrefix + "Errors"
		internalErrorsName = statsPrefix + "InternalErrors"
		resultStatsName = statsPrefix + "Results"
		spotCheckCountName = statsPrefix + "RowcacheSpotCheckCount"
		userTableQueryCountName = statsPrefix + "UserTableQueryCount"
		userTableQueryTimesNsName = statsPrefix + "UserTableQueryTimesNs"
		userTransactionCountName = statsPrefix + "UserTransactionCount"
		userTransactionTimesNsName = statsPrefix + "UserTransactionTimesNs"
	}
	resultBuckets := []int64{0, 1, 5, 10, 50, 100, 500, 1000, 5000, 10000}
	queryStats := stats.NewTimings(queryStatsName)
	return &QueryServiceStats{
		MySQLStats: stats.NewTimings(mysqlStatsName),
		QueryStats: queryStats,
		WaitStats:  stats.NewTimings(waitStatsName),
		KillStats:  stats.NewCounters(killStatsName, "Transactions", "Queries"),
		InfoErrors: stats.NewCounters(infoErrorsName, "Retry", "Fatal", "DupKey"),
		ErrorStats: stats.NewCounters(errorStatsName, "Fail", "TxPoolFull", "NotInTx", "Deadlock"),
		InternalErrors: stats.NewCounters(internalErrorsName, "Task", "MemcacheStats",
			"Mismatch", "StrayTransactions", "Invalidation", "Panic", "HungQuery", "Schema"),
		UserTableQueryCount: stats.NewMultiCounters(
			userTableQueryCountName, []string{"TableName", "CallerID", "Type"}),
		UserTableQueryTimesNs: stats.NewMultiCounters(
			userTableQueryTimesNsName, []string{"TableName", "CallerID", "Type"}),
		UserTransactionCount: stats.NewMultiCounters(
			userTransactionCountName, []string{"CallerID", "Conclusion"}),
		UserTransactionTimesNs: stats.NewMultiCounters(
			userTransactionTimesNsName, []string{"CallerID", "Conclusion"}),
		// Sample every 5 seconds and keep samples for up to 15 minutes.
		QPSRates:       stats.NewRates(qpsRateName, queryStats, 15*60/5, 5*time.Second),
		ResultStats:    stats.NewHistogram(resultStatsName, resultBuckets),
		SpotCheckCount: stats.NewInt(spotCheckCountName),
	}
}

Example #3

File: collector_test.go Project: CowLeo/vitess

func TestHistogram(t *testing.T) {
	v := stats.NewHistogram("", []int64{1, 3, 5, 7})
	load := func() {
		for i := int64(0); i < 10; i++ {
			v.Add(i)
		}
	}
	testMetric(t, v, load,
		`Desc{fqName: "test_name", help: "test_help", constLabels: {}, variableLabels: []}`,
		`histogram:<sample_count:10 sample_sum:45 bucket:<cumulative_count:2 upper_bound:1 > bucket:<cumulative_count:4 upper_bound:3 > bucket:<cumulative_count:6 upper_bound:5 > bucket:<cumulative_count:8 upper_bound:7 > > `,
	)
}

Example #4

File: query_engine.go Project: ninqing/vitess

// NewQueryEngine creates a new QueryEngine.
// This is a singleton class.
// You must call this only once.
func NewQueryEngine(config Config) *QueryEngine {
	qe := &QueryEngine{}
	qe.schemaInfo = NewSchemaInfo(config.QueryCacheSize, time.Duration(config.SchemaReloadTime*1e9), time.Duration(config.IdleTimeout*1e9))

	mysqlStats = stats.NewTimings("Mysql")

	// Pools
	qe.cachePool = NewCachePool("Rowcache", config.RowCache, time.Duration(config.QueryTimeout*1e9), time.Duration(config.IdleTimeout*1e9))
	qe.connPool = dbconnpool.NewConnectionPool("ConnPool", config.PoolSize, time.Duration(config.IdleTimeout*1e9))
	qe.streamConnPool = dbconnpool.NewConnectionPool("StreamConnPool", config.StreamPoolSize, time.Duration(config.IdleTimeout*1e9))
	qe.txPool = dbconnpool.NewConnectionPool("TransactionPool", config.TransactionCap, time.Duration(config.IdleTimeout*1e9)) // connections in pool has to be > transactionCap

	// Services
	qe.activeTxPool = NewActiveTxPool("ActiveTransactionPool", time.Duration(config.TransactionTimeout*1e9))
	qe.connKiller = NewConnectionKiller(1, time.Duration(config.IdleTimeout*1e9))
	qe.activePool = NewActivePool("ActivePool", time.Duration(config.QueryTimeout*1e9), qe.connKiller)
	qe.consolidator = NewConsolidator()
	qe.invalidator = NewRowcacheInvalidator(qe)
	qe.streamQList = NewQueryList(qe.connKiller)

	// Vars
	qe.spotCheckFreq = sync2.AtomicInt64(config.SpotCheckRatio * SPOT_CHECK_MULTIPLIER)
	if config.StrictMode {
		qe.strictMode.Set(1)
	}
	qe.strictTableAcl = config.StrictTableAcl
	qe.maxResultSize = sync2.AtomicInt64(config.MaxResultSize)
	qe.streamBufferSize = sync2.AtomicInt64(config.StreamBufferSize)

	// loggers
	qe.accessCheckerLogger = logutil.NewThrottledLogger("accessChecker", 1*time.Second)

	// Stats
	stats.Publish("MaxResultSize", stats.IntFunc(qe.maxResultSize.Get))
	stats.Publish("StreamBufferSize", stats.IntFunc(qe.streamBufferSize.Get))
	queryStats = stats.NewTimings("Queries")
	QPSRates = stats.NewRates("QPS", queryStats, 15, 60*time.Second)
	waitStats = stats.NewTimings("Waits")
	killStats = stats.NewCounters("Kills")
	infoErrors = stats.NewCounters("InfoErrors")
	errorStats = stats.NewCounters("Errors")
	internalErrors = stats.NewCounters("InternalErrors")
	resultStats = stats.NewHistogram("Results", resultBuckets)
	stats.Publish("RowcacheSpotCheckRatio", stats.FloatFunc(func() float64 {
		return float64(qe.spotCheckFreq.Get()) / SPOT_CHECK_MULTIPLIER
	}))
	spotCheckCount = stats.NewInt("RowcacheSpotCheckCount")

	return qe
}

Example #5

File: query_engine.go Project: johnvilsack/golang-stuff

func NewQueryEngine(config Config) *QueryEngine {
	qe := &QueryEngine{}
	qe.cachePool = NewCachePool(config.RowCache, time.Duration(config.QueryTimeout*1e9), time.Duration(config.IdleTimeout*1e9))
	qe.schemaInfo = NewSchemaInfo(config.QueryCacheSize, time.Duration(config.SchemaReloadTime*1e9), time.Duration(config.IdleTimeout*1e9))
	qe.connPool = NewConnectionPool(config.PoolSize, time.Duration(config.IdleTimeout*1e9))
	qe.streamConnPool = NewConnectionPool(config.StreamPoolSize, time.Duration(config.IdleTimeout*1e9))
	qe.reservedPool = NewReservedPool()
	qe.txPool = NewConnectionPool(config.TransactionCap, time.Duration(config.IdleTimeout*1e9)) // connections in pool has to be > transactionCap
	qe.activeTxPool = NewActiveTxPool(time.Duration(config.TransactionTimeout * 1e9))
	qe.activePool = NewActivePool(time.Duration(config.QueryTimeout*1e9), time.Duration(config.IdleTimeout*1e9))
	qe.consolidator = NewConsolidator()
	qe.maxResultSize = sync2.AtomicInt32(config.MaxResultSize)
	qe.streamBufferSize = sync2.AtomicInt32(config.StreamBufferSize)
	queryStats = stats.NewTimings("Queries")
	stats.NewRates("QPS", queryStats, 15, 60e9)
	waitStats = stats.NewTimings("Waits")
	killStats = stats.NewCounters("Kills")
	errorStats = stats.NewCounters("Errors")
	resultStats = stats.NewHistogram("Results", resultBuckets)
	return qe
}

Example #6

File: query_engine.go Project: haolei/vitess

// NewQueryEngine creates a new QueryEngine.
// This is a singleton class.
// You must call this only once.
func NewQueryEngine(config Config) *QueryEngine {
	qe := &QueryEngine{}

	// services
	qe.cachePool = NewCachePool("RowcachePool", config.RowCache, time.Duration(config.QueryTimeout*1e9), time.Duration(config.IdleTimeout*1e9))
	qe.schemaInfo = NewSchemaInfo(config.QueryCacheSize, time.Duration(config.SchemaReloadTime*1e9), time.Duration(config.IdleTimeout*1e9), config.SensitiveMode)
	qe.connPool = NewConnectionPool("ConnPool", config.PoolSize, time.Duration(config.IdleTimeout*1e9))
	qe.streamConnPool = NewConnectionPool("StreamConnPool", config.StreamPoolSize, time.Duration(config.IdleTimeout*1e9))
	qe.txPool = NewConnectionPool("TransactionPool", config.TransactionCap, time.Duration(config.IdleTimeout*1e9)) // connections in pool has to be > transactionCap
	qe.activeTxPool = NewActiveTxPool("ActiveTransactionPool", time.Duration(config.TransactionTimeout*1e9))
	qe.activePool = NewActivePool("ActivePool", time.Duration(config.QueryTimeout*1e9), time.Duration(config.IdleTimeout*1e9))
	qe.consolidator = NewConsolidator()

	// vars
	qe.spotCheckFreq = sync2.AtomicInt64(config.SpotCheckRatio * SPOT_CHECK_MULTIPLIER)
	if config.StrictMode {
		qe.strictMode.Set(1)
	}
	qe.maxResultSize = sync2.AtomicInt64(config.MaxResultSize)
	qe.streamBufferSize = sync2.AtomicInt64(config.StreamBufferSize)

	// stats
	stats.Publish("MaxResultSize", stats.IntFunc(qe.maxResultSize.Get))
	stats.Publish("StreamBufferSize", stats.IntFunc(qe.streamBufferSize.Get))
	queryStats = stats.NewTimings("Queries")
	QPSRates = stats.NewRates("QPS", queryStats, 15, 60*time.Second)
	waitStats = stats.NewTimings("Waits")
	killStats = stats.NewCounters("Kills")
	infoErrors = stats.NewCounters("InfoErrors")
	errorStats = stats.NewCounters("Errors")
	internalErrors = stats.NewCounters("InternalErrors")
	resultStats = stats.NewHistogram("Results", resultBuckets)
	stats.Publish("SpotCheckRatio", stats.FloatFunc(func() float64 {
		return float64(qe.spotCheckFreq.Get()) / SPOT_CHECK_MULTIPLIER
	}))
	spotCheckCount = stats.NewInt("SpotCheckCount")

	return qe
}

Example #7

File: query_service_stats.go Project: pranjal5215/vitess

// NewQueryServiceStats returns a new QueryServiceStats instance.
func NewQueryServiceStats(statsPrefix string, enablePublishStats bool) *QueryServiceStats {
	mysqlStatsName := ""
	queryStatsName := ""
	qpsRateName := ""
	waitStatsName := ""
	killStatsName := ""
	infoErrorsName := ""
	errorStatsName := ""
	internalErrorsName := ""
	resultStatsName := ""
	spotCheckCountName := ""
	if enablePublishStats {
		mysqlStatsName = statsPrefix + "Mysql"
		queryStatsName = statsPrefix + "Queries"
		qpsRateName = statsPrefix + "QPS"
		waitStatsName = statsPrefix + "Waits"
		killStatsName = statsPrefix + "Kills"
		infoErrorsName = statsPrefix + "InfoErrors"
		errorStatsName = statsPrefix + "Errors"
		internalErrorsName = statsPrefix + "InternalErrors"
		resultStatsName = statsPrefix + "Results"
		spotCheckCountName = statsPrefix + "RowcacheSpotCheckCount"
	}
	resultBuckets := []int64{0, 1, 5, 10, 50, 100, 500, 1000, 5000, 10000}
	queryStats := stats.NewTimings(queryStatsName)
	return &QueryServiceStats{
		MySQLStats:     stats.NewTimings(mysqlStatsName),
		QueryStats:     queryStats,
		WaitStats:      stats.NewTimings(waitStatsName),
		KillStats:      stats.NewCounters(killStatsName),
		InfoErrors:     stats.NewCounters(infoErrorsName),
		ErrorStats:     stats.NewCounters(errorStatsName),
		InternalErrors: stats.NewCounters(internalErrorsName),
		QPSRates:       stats.NewRates(qpsRateName, queryStats, 15, 60*time.Second),
		ResultStats:    stats.NewHistogram(resultStatsName, resultBuckets),
		SpotCheckCount: stats.NewInt(spotCheckCountName),
	}
}

Example #8

File: metrics.go Project: theskyinflames/bpulse-go-client

	"time"
)

func init() {
	//ML = &MemoryLoaderImpl{}
	ME = &MetricsExposerImpl{}
	BUFFER_MAX_NUM_TRACES = 1000
	working = true
	fmt.Println("Metrics package initiated.")
}

// --> http://{mdh server}:{mdh port}/debug/vars

var metricsChannel chan *traceMetric

var mtm = stats.NewHistogram("TimeResponses", []int64{10000000, 50000000, 100000000, 500000000, 1000000000, 1500000000, 2000000000, 2500000000, 3000000000, 3500000000, 4000000000, 4500000000, 5000000000, 5500000000, 6000000000, 10000000000})

var working bool

var ME MetricsExposer
var BUFFER_MAX_NUM_TRACES int

// Two metrics, these are exposed by "magic" :)
// Number of calls to our server.
var numCalls = expvar.NewInt("num_calls")
var numError = expvar.NewInt("num_errs")
var numPanic = expvar.NewInt("num_panics")
var numTimeout = expvar.NewInt("num_timeouts")

// ME Status
type MEStatus int