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/*
* include/framework/scheduling/statistics.h
*
* Copyright (C) 2023 Douglas B. Rumbaugh <drumbaugh@psu.edu>
*
* Distributed under the Modified BSD License.
*
* This is a stub for a statistics tracker to be used in scheduling. It
* currently only tracks simple aggregated statistics, but should be
* updated in the future for more fine-grained statistics. These will be
* used for making scheduling decisions and predicting the runtime of a
* given job.
*/
#pragma once
#include <cstdlib>
#include <cassert>
#include <unordered_map>
#include <vector>
#include <mutex>
#include <chrono>
#include <atomic>
namespace de {
class SchedulerStatistics {
private:
enum class EventType {
QUEUED,
SCHEDULED,
STARTED,
FINISHED
};
struct Event {
size_t id;
EventType type;
};
struct JobInfo {
size_t id;
size_t size;
size_t type;
};
public:
SchedulerStatistics() = default;
~SchedulerStatistics() = default;
void job_queued(size_t id, size_t type, size_t size) {
auto time = std::chrono::high_resolution_clock::now();
}
void job_scheduled(size_t id) {
std::unique_lock<std::mutex> lk(m_mutex);
}
void job_begin(size_t id) {
}
void job_complete(size_t id) {
}
/* FIXME: This is just a temporary approach */
void log_time_data(size_t length, size_t type) {
assert(type == 1 || type == 2);
if (type == 1) {
m_type_1_cnt.fetch_add(1);
m_type_1_total_time.fetch_add(length);
if (length > m_type_1_largest_time) {
m_type_1_largest_time.store(length);
}
} else {
m_type_2_cnt.fetch_add(1);
m_type_2_total_time.fetch_add(length);
if (length > m_type_2_largest_time) {
m_type_2_largest_time.store(length);
}
}
}
void print_statistics() {
if (m_type_1_cnt > 0) {
fprintf(stdout, "Query Count: %ld\tQuery Avg. Latency: %ld\tMax Query Latency: %ld\n",
m_type_1_cnt.load(),
m_type_1_total_time.load() / m_type_1_cnt.load(),
m_type_1_largest_time.load());
}
if (m_type_2_cnt > 0) {
fprintf(stdout, "Reconstruction Count: %ld\tReconstruction Avg. Latency: %ld\tMax Recon. Latency:%ld\n",
m_type_2_cnt.load(),
m_type_2_total_time.load() / m_type_2_cnt.load(),
m_type_2_largest_time.load());
}
}
private:
std::mutex m_mutex;
std::unordered_map<size_t, JobInfo> m_jobs;
std::vector<Event> m_event_log;
std::atomic<size_t> m_type_1_cnt;
std::atomic<size_t> m_type_1_total_time;
std::atomic<size_t> m_type_2_cnt;
std::atomic<size_t> m_type_2_total_time;
std::atomic<size_t> m_type_1_largest_time;
std::atomic<size_t> m_type_2_largest_time;
};
}
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