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construct/include/ircd/db/stats.h

54 lines
1.7 KiB
C++

// Matrix Construct
//
// Copyright (C) Matrix Construct Developers, Authors & Contributors
// Copyright (C) 2016-2018 Jason Volk <jason@zemos.net>
//
// Permission to use, copy, modify, and/or distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice is present in all copies. The
// full license for this software is available in the LICENSE file.
#pragma once
#define HAVE_IRCD_DB_STATS_H
namespace ircd::db
{
// Histogram (per database)
struct histogram;
extern const uint32_t histogram_max;
string_view histogram_id(const uint32_t &id);
uint32_t histogram_id(const string_view &key);
const struct histogram &histogram(const database &, const uint32_t &id);
const struct histogram &histogram(const database &, const string_view &key);
// Ticker (per database)
extern const uint32_t ticker_max;
string_view ticker_id(const uint32_t &id);
uint32_t ticker_id(const string_view &key);
uint64_t ticker(const database &, const uint32_t &id);
uint64_t ticker(const database &, const string_view &key);
// Perf counts (global)
uint perf_level();
void perf_level(const uint &);
const rocksdb::PerfContext &perf_current();
std::string string(const rocksdb::PerfContext &, const bool &all = false);
// IO counters (global)
const rocksdb::IOStatsContext &iostats_current();
std::string string(const rocksdb::IOStatsContext &, const bool &all = false);
}
/// Copy of rocksdb::HistogramData because it is not included here.
struct ircd::db::histogram
{
double median {0};
double pct95 {0};
double pct99 {0};
double avg {0};
double stddev {0};
double max {0};
uint64_t hits {0};
uint64_t time {0};
};