fork of https://github.com/oxigraph/rocksdb and https://github.com/facebook/rocksdb for nextgraph and oxigraph
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98 lines
2.9 KiB
98 lines
2.9 KiB
/*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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#ifndef THRIFT_TEST_LOADGEN_LATENCYSCOREBOARD_H_
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#define THRIFT_TEST_LOADGEN_LATENCYSCOREBOARD_H_ 1
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#include "thrift/lib/cpp/test/loadgen/ScoreBoard.h"
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#include "thrift/lib/cpp/test/loadgen/ScoreBoardOpVector.h"
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namespace apache { namespace thrift { namespace loadgen {
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/**
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* A ScoreBoard that tracks number of queries per second, as well as
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* information about how long each operation takes.
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*
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* This ScoreBoard calls gettimeofday() twice for each operation, so it does
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* add a small amount of overhead. If you have extremely high performance
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* requirements, you could use QpsScoreBoard to track just the QPS rate and
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* eliminate the gettimeofday() calls.
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*/
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class LatencyScoreBoard : public ScoreBoard {
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public:
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class OpData {
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public:
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OpData();
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void addDataPoint(uint64_t latencyUsecs);
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void zero();
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void accumulate(const OpData* other);
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uint64_t getCount() const;
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uint64_t getCountSince(const OpData* other) const;
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double getLatencyAvg() const;
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double getLatencyAvgSince(const OpData* other) const;
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double getLatencyStdDev() const;
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double getLatencyStdDevSince(const OpData* other) const;
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uint64_t count_;
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uint64_t usecSum_;
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uint64_t sumOfSquares_;
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};
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LatencyScoreBoard(uint32_t numOpsHint)
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: startTime_(0)
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, opData_(numOpsHint) {}
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virtual void opStarted(uint32_t opType);
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virtual void opSucceeded(uint32_t opType);
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virtual void opFailed(uint32_t opType);
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/**
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* Get the OpData for a particular operation type
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*/
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const OpData* getOpData(uint32_t opType);
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/**
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* Compute an OpData object with aggregate information over all operation
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* types.
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*
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* @param result A pointer to the OpData object to fill in with aggregate
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* information.
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*/
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void computeOpAggregate(OpData* result) const;
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/**
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* Zero out the statistics.
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*/
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void zero();
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/**
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* Add the counters from another scoreboard to this one.
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*/
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void accumulate(const LatencyScoreBoard* other);
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private:
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int64_t startTime_;
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ScoreBoardOpVector<OpData> opData_;
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};
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}}} // apache::thrift::loadgen
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#endif // THRIFT_TEST_LOADGEN_LATENCYSCOREBOARD_H_
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