C++库研究笔记——Linux下是否需要使用memory pool？

Linux Slab分配器(一)--概述

Linux slab 分配器剖析

C＋＋库研究笔记——内存池实现

做了一些测试：发现linux使用内存池与否没有明显差别，仅仅有2倍。 Linux内存处理机制已经很好，一般情况下，确实没有必要在用内存池？？？ 不知道大家持什么样的观点。

速度测试：

In [use pool]:0.00560116768 seconds
In [ no pool]:0.00855708122 seconds


In [use pool]:0.00404405594 seconds
In [ no pool]:0.00921702385 seconds


In [use pool]:0.0060069561 seconds
In [ no pool]:0.0129909515 seconds


In [use pool]:0.00984287262 seconds
In [ no pool]:0.0179138184 seconds


In [use pool]:0.00937509537 seconds
In [ no pool]:0.0222010612 seconds


In [use pool]:0.0128059387 seconds
In [ no pool]:0.0269629955 seconds


In [use pool]:0.0170590878 seconds
In [ no pool]:0.0312800407 seconds


In [use pool]:0.0199379921 seconds
In [ no pool]:0.0355689526 seconds


In [use pool]:0.0220119953 seconds
In [ no pool]:0.0396490097 seconds


In [use pool]:0.0250389576 seconds
In [ no pool]:0.0438430309 seconds


02:36:16:~/../pool_test$ vim MainFile.cpp 


g++ MemPool.o TestClass.o MainFile.cpp -o main -O3


Press ENTER or type command to continue
02:37:21:~/../pool_test$ ./main 
In [use pool]:0.000194072723 seconds
In [ no pool]:0.000468015671 seconds


In [use pool]:0.000373125076 seconds
In [ no pool]:0.000900030136 seconds


In [use pool]:0.000594139099 seconds
In [ no pool]:0.00134897232 seconds


In [use pool]:0.000751018524 seconds
In [ no pool]:0.00190091133 seconds


In [use pool]:0.000940084457 seconds
In [ no pool]:0.0022559166 seconds


In [use pool]:0.00139307976 seconds
In [ no pool]:0.00420188904 seconds


In [use pool]:0.00148892403 seconds
In [ no pool]:0.00316882133 seconds


In [use pool]:0.00165891647 seconds
In [ no pool]:0.00361800194 seconds


In [use pool]:0.00178599358 seconds
In [ no pool]:0.00484013557 seconds

In [use pool]:0.0184268951 seconds
In [ no pool]:0.0416920185 seconds


In [use pool]:0.0186669827 seconds
In [ no pool]:0.043035984 seconds


In [use pool]:0.0192191601 seconds
In [ no pool]:0.0422170162 seconds


In [use pool]:0.0193469524 seconds
In [ no pool]:0.0423469543 seconds


In [use pool]:0.0193350315 seconds
In [ no pool]:0.0422008038 seconds


In [use pool]:0.0196199417 seconds
In [ no pool]:0.0431320667 seconds


In [use pool]:0.0197191238 seconds
In [ no pool]:0.0441551208 seconds


In [use pool]:0.0201468468 seconds
In [ no pool]:0.0435791016 seconds