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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,77 @@ | ||
| import os | ||
| import shutil | ||
| import time | ||
| import argparse | ||
| import subprocess | ||
| import mmap | ||
| import io | ||
| from multiprocessing import Pool, cpu_count | ||
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| # Function to create files using dd command | ||
| def create_file_dd(file_index, folder, source_file, timestamp): | ||
| filename = os.path.join(folder, f'ddFile_{timestamp}_{file_index}') | ||
| block_size = 1 # in GB | ||
| count = 36 | ||
| file_size_gb = (block_size * count) | ||
|
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| command = f"dd if={source_file} of={filename} bs={block_size}G count={count} oflag=direct" | ||
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| start_time = time.time() | ||
| result = subprocess.run(command, shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE) | ||
| end_time = time.time() | ||
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| if result.returncode != 0: | ||
| return (filename, 0, 0.0, f"Error creating file {filename}: {result.stderr.decode().strip()}") | ||
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| write_time = end_time - start_time | ||
| write_speed = (file_size_gb * 1024) / write_time # MB/s | ||
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| return (filename, write_time, write_speed, file_size_gb, None) | ||
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| # Main function to handle parallel execution | ||
| def main(folder, num_files, source_file): | ||
| if not os.path.exists(folder): | ||
| os.makedirs(folder) | ||
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| timestamp = int(time.time()) # Get current timestamp for file naming | ||
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| start_time = time.time() | ||
| results = [] | ||
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| with Pool(processes=cpu_count()) as pool: # Pool of workers based on the CPU count | ||
| futures=[] | ||
| futures += [pool.apply_async(create_file_dd, (i, folder, source_file, timestamp)) for i in range(num_files)] | ||
|
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| # Collect results from async operations | ||
| for future in futures: | ||
| result = future.get() | ||
| if result[4] is None: # No error | ||
| results.append(result) | ||
| else: | ||
| print(result[4]) # Print error messages | ||
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| end_time = time.time() | ||
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| total_time = end_time - start_time | ||
| total_data_written = sum(r[3] for r in results) # in GB | ||
| speed_gbps = (total_data_written *8 ) / total_time # Convert GB to Gigabits (1 GB = 8 Gb) | ||
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| throughput = (total_data_written * 1024) / total_time | ||
| print(f"Number of files written: {num_files}") | ||
| print(f"Total amount of data written: {total_data_written:.2f} GB") | ||
| print(f"Total time taken: {total_time:.2f} seconds") | ||
| print(f"Overall Speed: {speed_gbps:.2f} Gbps") | ||
| print(f"Throughput: {throughput:.2f} MiB/s") | ||
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| if __name__ == "__main__": | ||
| parser = argparse.ArgumentParser(description='Create multiple files using various methods in parallel.') | ||
| parser.add_argument('folder', type=str, help='The folder where the files will be written.') | ||
| parser.add_argument('num_files', type=int, help='The number of files to create.') | ||
| parser.add_argument('source_file', type=str, help='The source file to copy data from.') | ||
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| args = parser.parse_args() | ||
| main(args.folder, args.num_files, args.source_file) | ||
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| # python3 highspeed_write_nonzero.py <mntPath>~/drs/random_data_test/ <noOfFiles>5 <sourceFile>/mnt/azcopy_test_180GB.log |