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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
*/
Stats::Stats(bool output_thread, std::string stats_file) {
// 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));
}
// Prometheus
exposer = std::make_shared<Exposer>("127.0.0.1:8080");
family_counter = &BuildCounter()
.Name("IOPS")
.Help("Number of IOPS")
.Register(registry);
IOPS_create = &family_counter->Add({{"operation","Create"}});
IOPS_create->Increment();
if(output_thread_) {
t_output = std::thread([this, stats_file] {
output(std::chrono::duration(10s), stats_file);
});
if(output_thread_) {
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void
Stats::add_read(std::string path, unsigned long long chunk) {
CHUNK_READ[pair(path, chunk)]++;
}
void
Stats::add_write(std::string path, unsigned long long chunk) {
CHUNK_WRITE[pair(path, chunk)]++;
}
void
Stats::output_map(std::ofstream& output) {
// Ordering
map<unsigned int, std::set<pair<std::string, unsigned long long>>>
ORDER_WRITE;
map<unsigned int, std::set<pair<std::string, unsigned long long>>>
ORDER_READ;
for(auto i : CHUNK_READ) {
ORDER_READ[i.second].insert(i.first);
}
for(auto i : CHUNK_WRITE) {
ORDER_WRITE[i.second].insert(i.first);
}
auto CHUNK_MAP =
[](std::string caption,
map<unsigned int,
std::set<pair<std::string, unsigned long long>>>& ORDER,
std::ofstream& output) {
output << caption << std::endl;
for(auto k : ORDER) {
output << k.first << " -- ";
for(auto v : k.second) {
output << v.first << " // " << v.second << endl;
}
}
};
CHUNK_MAP("READ CHUNK MAP", ORDER_READ, output);
CHUNK_MAP("WRITE CHUNK MAP", ORDER_WRITE, output);
}
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;
}
// Mean in MB/s
results[0] = get_mean(sop) / (1024.0 * 1024.0);
results[3] /= 10 * 60 * (1024.0 * 1024.0);
results[2] /= 5 * 60 * (1024.0 * 1024.0);
results[1] /= 60 * (1024.0 * 1024.0);
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;
Stats::dump(std::ofstream& of) {
of << "Stats " << IOPS_OP_S[static_cast<int>(e)]
<< " IOPS/s (avg, 1 min, 5 min, 10 min) \t\t";
of << std::setprecision(4) << std::setw(9) << mean << " - ";
of << std::endl;
}
for(auto e : all_SIZE_OP) {
auto tmp = get_four_means(e);
of << "Stats " << SIZE_OP_S[static_cast<int>(e)]
<< " MB/s (avg, 1 min, 5 min, 10 min) \t\t";
of << std::setprecision(4) << std::setw(9) << mean << " - ";
of << std::endl;
of << std::endl;
Stats::output(std::chrono::seconds d, std::string file_output) {
int times = 0;
std::ofstream of(file_output, std::ios_base::openmode::_S_trunc);
dump(of);
std::chrono::seconds a = 0s;
times++;
#ifdef GKFS_CHUNK_STATS
if(times % 4 == 0)
output_map(of);
#endif
while(running and a < d) {
a += 1s;
std::this_thread::sleep_for(1s);
}