要利用CentOS資源提升Python運行效率,可以從多個方面入手,包括優化系統配置、選擇合適的Python解釋器、使用性能分析工具、并行計算、代碼優化等。以下是一些具體的建議:
ulimit -n 65535
sysctl -w net.core.somaxconn=1024
sysctl -w fs.file-max=100000
sudo yum install pypy
python -m cProfile your_script.py
pip install line_profiler
使用方法:from line_profiler import LineProfiler
def my_function():
# Your code here
lp = LineProfiler()
lp.add_function(my_function)
lp.runcall(my_function)
lp.print_stats()
threading
模塊進行I/O密集型任務。import threading
def task():
# Your I/O bound task here
threads = []
for i in range(10):
t = threading.Thread(target=task)
threads.append(t)
t.start()
for t in threads:
t.join()
multiprocessing
模塊進行CPU密集型任務。from multiprocessing import Pool
def task(x):
return x * x
if __name__ == '__main__':
with Pool(processes=4) as pool:
results = pool.map(task, range(10))
print(results)
def my_generator():
for i in range(10):
yield i
for value in my_generator():
print(value)
functools.lru_cache
裝飾器緩存函數結果。from functools import lru_cache
@lru_cache(maxsize=128)
def expensive_function(x):
# Your expensive computation here
return result
import asyncio
async def task():
# Your asynchronous task here
await asyncio.sleep(1)
return "Done"
async def main():
tasks = [task() for _ in range(10)]
results = await asyncio.gather(*tasks)
print(results)
asyncio.run(main())
通過以上方法,你可以顯著提升在CentOS上運行Python程序的效率。根據具體的應用場景和需求,選擇合適的優化策略。