ClickHouse/dbms/programs/performance-test/TestStats.h

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#pragma once
#include <Core/Types.h>
#include <limits>
#include <Common/Stopwatch.h>
#include <AggregateFunctions/ReservoirSampler.h>
namespace DB
{
struct TestStats
{
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TestStats();
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Stopwatch watch;
Stopwatch watch_per_query;
Stopwatch min_time_watch;
bool last_query_was_cancelled = false;
std::string query_id;
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size_t queries = 0;
size_t total_rows_read = 0;
size_t total_bytes_read = 0;
size_t last_query_rows_read = 0;
size_t last_query_bytes_read = 0;
using Sampler = ReservoirSampler<double>;
Sampler sampler{1 << 16};
/// min_time in ms
UInt64 min_time = std::numeric_limits<UInt64>::max();
double total_time = 0;
UInt64 max_rows_speed = 0;
UInt64 max_bytes_speed = 0;
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double avg_rows_speed_value = 0;
double avg_rows_speed_first = 0;
static inline double avg_rows_speed_precision = 0.005;
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double avg_bytes_speed_value = 0;
double avg_bytes_speed_first = 0;
static inline double avg_bytes_speed_precision = 0.005;
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size_t number_of_rows_speed_info_batches = 0;
size_t number_of_bytes_speed_info_batches = 0;
UInt64 memory_usage = 0;
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bool ready = false; // check if a query wasn't interrupted by SIGINT
std::string exception;
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/// Hack, actually this field doesn't required for statistics
bool got_SIGINT = false;
std::string getStatisticByName(const std::string & statistic_name);
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void update_min_time(UInt64 min_time_candidate);
void add(size_t rows_read_inc, size_t bytes_read_inc);
void updateQueryInfo();
void setTotalTime()
{
total_time = watch.elapsedSeconds();
}
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void startWatches();
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};
}