めざせpythonライブラリマスター （34）concurrent

#【ライブラリ説明】
　並列実行

#【プログラム】

concurrent.py

# -*- coding: utf-8 -*-

from benchit import BenchIt
from concurrent import futures

b = BenchIt()

def process_job(job):
    count = 10000000
    while count>0:
        count -= 1
    return job

jobs = [i for i in range(20)]

# スレッド無し
result = []
for job in jobs:
    result.append(process_job(job))
        
b.mark("Non-Thread")

# スレッド有り
result = []
thread_pool = futures.ThreadPoolExecutor(max_workers=5)
result = thread_pool.map(process_job, jobs)
        
b.mark("Multi-thread5")
        
# スレッド有り
result = []
thread_pool = futures.ThreadPoolExecutor(max_workers=10)
result = thread_pool.map(process_job, jobs)
        
b.mark("Multi-thread10")

b.display()

#【結果】

display.text

+----------------+----------+------+-------+----------+----------+---------+
| Marker         | Method   | Line | Loops | Avg Time |  Runtime | Percent |
+----------------+----------+------+-------+----------+----------+---------+
| Non-Thread     | <module> |   21 |     1 | 14.82156 | 14.82156 |   88.72 |
| Multi-thread5  | <module> |   28 |     1 |  0.18812 |  0.18812 |    1.13 |
| Multi-thread10 | <module> |   35 |     1 |  1.69720 |  1.69720 |   10.16 |
+----------------+----------+------+-------+----------+----------+---------+
Total runtime: 16.71

#【参考サイト】
　document
　めざせpythonライブラリマスター （27）benchit