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/*
Copyright 2018-2022, Barcelona Supercomputing Center (BSC), Spain
Copyright 2015-2022, Johannes Gutenberg Universitaet Mainz, Germany
This software was partially supported by the
EC H2020 funded project NEXTGenIO (Project ID: 671951, www.nextgenio.eu).
This software was partially supported by the
ADA-FS project under the SPPEXA project funded by the DFG.
This file is part of GekkoFS.
GekkoFS is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
GekkoFS is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GekkoFS. If not, see <https://www.gnu.org/licenses/>.
SPDX-License-Identifier: GPL-3.0-or-later
*/
// Init clocks
start = std::chrono::steady_clock::now();
last_cached = std::chrono::steady_clock::now();
// Init cached (4 mean values)
for(auto e : all_IOPS_OP)
for(int i = 0; i < 4; i++) CACHED_IOPS[e].push_back(0.0);
for(auto e : all_SIZE_OP)
for(int i = 0; i < 4; i++) CACHED_SIZE[e].push_back(0.0);
// To simplify the control we add an element into the different maps
// Statistaclly will be negligible... and we get a faster flow
for(auto e : all_IOPS_OP) {
IOPS[e] = 0;
TIME_IOPS[e].push_back(std::chrono::steady_clock::now());
for(auto e : all_SIZE_OP) {
SIZE[e] = 0;
TIME_SIZE[e].push_back(pair(std::chrono::steady_clock::now(), 0.0));
}
if (output_thread_) {
t_output = std::thread([this] { output(std::chrono::duration(10s)); });
Stats::~Stats() {
// We do not need a mutex for that
if (output_thread_) {
running = false;
t_output.join();
void
Stats::add_value_iops(enum IOPS_OP iop) {
IOPS[iop]++;
auto now = std::chrono::steady_clock::now();
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if((now - TIME_IOPS[iop].front()) > std::chrono::duration(10s)) {
TIME_IOPS[iop].pop_front();
} else if(TIME_IOPS[iop].size() >= MAX_STATS)
TIME_IOPS[iop].pop_front();
TIME_IOPS[iop].push_back(std::chrono::steady_clock::now());
}
void
Stats::add_value_size(enum SIZE_OP iop, unsigned long long value) {
auto now = std::chrono::steady_clock::now();
SIZE[iop] += value;
if((now - TIME_SIZE[iop].front().first) > std::chrono::duration(10s)) {
TIME_SIZE[iop].pop_front();
} else if(TIME_SIZE[iop].size() >= MAX_STATS)
TIME_SIZE[iop].pop_front();
TIME_SIZE[iop].push_back(pair(std::chrono::steady_clock::now(), value));
if(iop == SIZE_OP::READ_SIZE)
IOPS[IOPS_OP::IOPS_READ]++;
else if(iop == SIZE_OP::WRITE_SIZE)
IOPS[IOPS_OP::IOPS_WRITE]++;
}
/**
* @brief Get the total mean value of the asked stat
* This can be provided inmediately without cost
* @return mean value
*/
double
Stats::get_mean(enum SIZE_OP sop) {
auto now = std::chrono::steady_clock::now();
auto duration =
std::chrono::duration_cast<std::chrono::seconds>(now - start);
double value = (double) SIZE[sop] / (double) duration.count();
return value;
}
double
Stats::get_mean(enum IOPS_OP iop) {
auto now = std::chrono::steady_clock::now();
auto duration =
std::chrono::duration_cast<std::chrono::seconds>(now - start);
double value = (double) IOPS[iop] / (double) duration.count();
return value;
}
/**
* @brief Get all the means (total, 1,5 and 10 minutes) for a SIZE_OP
* Returns precalculated values if we just calculated them 1 minute ago
* // TODO: cache
* @return std::vector< double > with 4 means
*/
std::vector<double>
Stats::get_four_means(enum SIZE_OP sop) {
std::vector<double> results = {0, 0, 0, 0};
auto now = std::chrono::steady_clock::now();
for(auto e : TIME_SIZE[sop]) {
auto duration =
std::chrono::duration_cast<std::chrono::minutes>(now - e.first)
.count();
if(duration > 10)
break;
results[3] += e.second;
if(duration > 5)
continue;
results[2] += e.second;
if(duration > 1)
continue;
results[1] += e.second;
}
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results[0] = get_mean(sop);
results[3] /= 10 * 60;
results[2] /= 5 * 60;
results[1] /= 60;
return results;
}
std::vector<double>
Stats::get_four_means(enum IOPS_OP iop) {
std::vector<double> results = {0, 0, 0, 0};
auto now = std::chrono::steady_clock::now();
for(auto e : TIME_IOPS[iop]) {
auto duration =
std::chrono::duration_cast<std::chrono::minutes>(now - e)
.count();
if(duration > 10)
break;
results[3]++;
if(duration > 5)
continue;
results[2]++;
if(duration > 1)
continue;
results[1]++;
results[0] = get_mean(iop);
results[3] /= 10 * 60;
results[2] /= 5 * 60;
results[1] /= 60;
void
Stats::dump() {
for(auto e : all_IOPS_OP) {
auto tmp = get_four_means(e);
std::cout << "Stats " << IOPS_OP_S[static_cast<int>(e)] << " ";
for(auto mean : tmp) {
std::cout << mean << " - ";
}
std::cout << std::endl;
}
for(auto e : all_SIZE_OP) {
auto tmp = get_four_means(e);
std::cout << "Stats " << SIZE_OP_S[static_cast<int>(e)] << " ";
for(auto mean : tmp) {
std::cout << mean << " - ";
}
std::cout << std::endl;
while(running) {
dump();
std::this_thread::sleep_for(d);
}
}