介绍：Memtester是一个检测VPS真实可分配内存的小工具，适用于检测VPS超售情况。本程序检测的可分配内存指的是用户使用时最大能占用的内存量。

使用

CentOS / RHEL运行命令：

yum install wget -y
yum groupinstall "Development Tools" -y
wget https://raw.githubusercontent.com/FunctionClub/Memtester/master/memtester.cpp
gcc -l stdc++ memtester.cpp
./a.out

Ubuntu / Debian运行命令：

apt-get update
apt-get install wget build-essential -y
wget https://raw.githubusercontent.com/FunctionClub/Memtester/master/memtester.cpp
gcc -l stdc++ memtester.cpp
./a.out

在进程被杀死前可以测出当时最大的内存占用

[root@aASPjF1018309 ~]# ./a.out
I will try my best to fill your RAM.
You have 3 seconds to quit (Ctrl+C)
10MB allocated
20MB allocated
30MB allocated
40MB allocated
50MB allocated
60MB allocated
70MB allocated
80MB allocated
90MB allocated
100MB allocated
110MB allocated
120MB allocated
130MB allocated
140MB allocated
150MB allocated
160MB allocated
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640MB allocated
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880MB allocated
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1000MB allocated
1010MB allocated
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1120MB allocated
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1190MB allocated
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1250MB allocated
1260MB allocated
1270MB allocated
1280MB allocated
1290MB allocated
1300MB allocated
1310MB allocated
1320MB allocated
1330MB allocated
1340MB allocated
已杀死
[root@aASPjF1018309 ~]# 

文章： 《Memtester一键脚本，可检测VPS真实可分配内存及超售情况》
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