std::vector<iteration_result> StressIncreaseToMax::execute_test_iterations(
const TaskConf& task_conf,
unsigned time,
size_t requested_memory_limit)
{
TimerSysTime timer;
unsigned itr = 0;
std::vector<iteration_result> results;
std::ofstream csv_file;
csv::Row row;
row.append("Iteration");
row.append("Allocated memory (MB)");
row.append("Elapsed time (seconds)");
if(task_conf.is_csv_log_enabled)
{
csv_file.open("stress_test_increase_to_max.csv");
csv_file << row.export_row();
}
printf("%s", row.export_row().c_str());
timer.start();
while (timer.getElapsedTime() < time)
{
StressIncreaseToMax stress_test(task_conf, requested_memory_limit);
stress_test.run();
float elapsed_time = timer.getElapsedTime();
TimeStats stats;
stats += stress_test.get_results();
results.push_back(stress_test.get_test_status());
//Log every interation of StressIncreaseToMax test.
csv::Row row;
row.append(itr);
row.append(convert_bytes_to_mb(stats.get_allocated()));
row.append(elapsed_time);
if(task_conf.is_csv_log_enabled)
{
csv_file << row.export_row();
}
printf("%s", row.export_row().c_str());
fflush(stdout);
itr++;
}
printf("\nStress test (StressIncreaseToMax) finish in time %f.\n",timer.getElapsedTime());
csv_file.close();
return results;
}
void run()
{
unsigned mem_operations_num = 10;
size_t threads_number = 50;
bool touch_memory = true;
size_t size_1MB = 1024*1024;
size_t alignment = 2*size_1MB;
size_t alloc_size = 4*size_1MB;
std::vector<Thread*> threads;
std::vector<Task*> tasks;
TimerSysTime timer;
timer.start();
// This bug occurs more frequently under stress of multithreaded allocations.
for (int i=0; i<threads_number; i++) {
Task* task = new HugePageUnmap(mem_operations_num, touch_memory, alignment, alloc_size, HBW_PAGESIZE_2MB);
tasks.push_back(task);
threads.push_back(new Thread(task));
}
float elapsed_time = timer.getElapsedTime();
ThreadsManager threads_manager(threads);
threads_manager.start();
threads_manager.barrier();
threads_manager.release();
//task release
for (int i=0; i<tasks.size(); i++) {
delete tasks[i];
}
RecordProperty("threads_number", threads_number);
RecordProperty("memory_operations_per_thread", mem_operations_num);
RecordProperty("elapsed_time", elapsed_time);
}