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compaction.cpp
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compaction.cpp
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#include <algorithm>
#include <chrono>
#include <iomanip>
#include <iostream>
#include <random>
#include <vector>
#include "kvstore.h"
#include "utils.h"
using namespace std;
using std::chrono::duration;
using std::chrono::duration_cast;
using std::chrono::high_resolution_clock;
using std::chrono::microseconds;
using std::chrono::milliseconds;
using std::chrono::nanoseconds;
using std::chrono::seconds;
KVStore store("../data");
int main() {
string path = "../data";
auto start = high_resolution_clock::now();
cout << ">>>>> Compaction Test <<<<<" << endl;
random_device rd;
mt19937 mt(rd());
int remain = 2 * 1024 * 1024 - 32 - 10240 - 1000 * 12;
auto f = 10;
if (utils::dirExists(path)) {
string cmd = "rm -rf " + path;
system(cmd.c_str());
}
KVStore store(path);
string value(remain / f, 's');
unsigned long long mis = 0;
int sec = 0;
int ii = 0;
for (int i = 0; i < f * 5000; i++) {
auto s = high_resolution_clock::now();
store.put(i, value);
auto e = high_resolution_clock::now();
mis += duration_cast<microseconds>(e - s).count();
if (mis / 1000 / 1000 > sec) {
cout << i - ii << endl;
ii = i;
sec++;
}
}
cout << f << " puts per compaction, Delay: "
<< mis / 1000 / 1000 / (double)(f * 100) << "ms" << endl;
// cout << "no compaction, ";
// µs = 0;
// KVStore store2(path);
// for (int i = 0; i < 200000; i++) {
// auto key = mt();
// auto s = high_resolution_clock::now();
// store2.put(key, "s");
// auto e = high_resolution_clock::now();
// µs += duration_cast<nanoseconds>(e - s).count();
// }
// cout << "Delay: " << µs / 1000 / 1000 / (double)(200000) << "ms" << endl;
auto end = high_resolution_clock::now();
auto totalTime = duration_cast<seconds>(end - start).count();
cout << endl;
cout << ">>>>> Summary <<<<<" << endl;
cout << "It takes " << totalTime << "s to complete the test." << endl;
}