要利用CentOS资源提升Python运行效率,可以从多个方面入手,包括优化系统配置、选择合适的Python解释器、使用性能分析工具、并行计算、代码优化等。以下是一些具体的建议:
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
模块进行I/O密集型任务。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
模块进行CPU密集型任务。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
装饰器缓存函数结果。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())
通过以上方法,你可以显著提升在CentOS上运行Python程序的效率。根据具体的应用场景和需求,选择合适的优化策略。