一般大家买到VPS之后都是习惯于迅速安装锐速，搭建上网工具等。但是偶尔也是会用测试工具来测试VPS的性能，来看看自己到底买了个什么样的货。网上主流的VPS测试脚本我这里收集了一些，需要的朋友们可以根据自己的需求来使用。
一、硬盘IO及全球下载速度测试
脚本使用秋水逸冰大佬的一键Bench脚本，代码：
wget -qO- bench.sh | bash
测试效果如下：
二、全国网络测试
这个脚本来自于91yun，包括了全国PING值的测试和各地路由的走法，偏向于网络测试。代码：
wget -N --no-check-certificate https://raw.githubusercontent.com/91yun/91yuntest/master/test_91yun.sh && chmod +x test_91yun.sh && ./test_91yun.sh
效果如下：
三、服务器性能测试
简单的对CPU进行运算测试，需要跑的时间很长，请耐心等好最后测试出来的跑分。脚本如下：
wget --no-check-certificate https://github.com/teddysun/across/raw/master/unixbench.sh chmod +x unixbench.sh ./unixbench.sh
测试效果如下：
BYTE UNIX Benchmarks (Version 5.1.3) System: vpn: GNU/Linux OS: GNU/Linux -- 2.6.32-042stab076.8 -- #1 SMP Tue May 14 20:38:14 MSK 2013 Machine: i686 (i386) Language: en_US.utf8 (charmap="UTF-8", collate="UTF-8") CPU 0: Intel(R) Xeon(R) CPU L5520 @ 2.27GHz (4533.6 bogomips) Hyper-Threading, x86-64, MMX, Physical Address Ext, SYSENTER/SYSEXIT, SYSCALL/SYSRET, Intel virtualization CPU 1: Intel(R) Xeon(R) CPU L5520 @ 2.27GHz (4533.6 bogomips) Hyper-Threading, x86-64, MMX, Physical Address Ext, SYSENTER/SYSEXIT, SYSCALL/SYSRET, Intel virtualization 09:41:17 up 31 days, 9:21, 1 user, load average: 0.23, 0.05, 0.02; runlevel 3 ------------------------------------------------------------------------ Benchmark Run: Mon Jul 29 2013 09:41:17 - 10:09:29 2 CPUs in system; running 1 parallel copy of tests Dhrystone 2 using register variables 17172222.3 lps (10.0 s, 7 samples) Double-Precision Whetstone 2600.2 MWIPS (10.0 s, 7 samples) Execl Throughput 4152.8 lps (30.0 s, 2 samples) File Copy 1024 bufsize 2000 maxblocks 622759.5 KBps (30.0 s, 2 samples) File Copy 256 bufsize 500 maxblocks 172634.3 KBps (30.0 s, 2 samples) File Copy 4096 bufsize 8000 maxblocks 1218236.9 KBps (30.0 s, 2 samples) Pipe Throughput 1416230.5 lps (10.0 s, 7 samples) Pipe-based Context Switching 206509.4 lps (10.0 s, 7 samples) Process Creation 8568.6 lps (30.0 s, 2 samples) Shell Scripts (1 concurrent) 3145.9 lpm (60.0 s, 2 samples) Shell Scripts (8 concurrent) 528.3 lpm (60.0 s, 2 samples) System Call Overhead 1528474.7 lps (10.0 s, 7 samples) System Benchmarks Index Values BASELINE RESULT INDEX Dhrystone 2 using register variables 116700.0 17172222.3 1471.5 Double-Precision Whetstone 55.0 2600.2 472.8 Execl Throughput 43.0 4152.8 965.8 File Copy 1024 bufsize 2000 maxblocks 3960.0 622759.5 1572.6 File Copy 256 bufsize 500 maxblocks 1655.0 172634.3 1043.1 File Copy 4096 bufsize 8000 maxblocks 5800.0 1218236.9 2100.4 Pipe Throughput 12440.0 1416230.5 1138.4 Pipe-based Context Switching 4000.0 206509.4 516.3 Process Creation 126.0 8568.6 680.0 Shell Scripts (1 concurrent) 42.4 3145.9 742.0 Shell Scripts (8 concurrent) 6.0 528.3 880.5 System Call Overhead 15000.0 1528474.7 1019.0 ======== System Benchmarks Index Score 960.4 ------------------------------------------------------------------------ Benchmark Run: Mon Jul 29 2013 10:09:29 - 10:39:56 2 CPUs in system; running 2 parallel copies of tests Dhrystone 2 using register variables 16851634.7 lps (10.0 s, 7 samples) Double-Precision Whetstone 5182.9 MWIPS (10.0 s, 7 samples) Execl Throughput 4101.9 lps (30.0 s, 2 samples) File Copy 1024 bufsize 2000 maxblocks 635244.9 KBps (30.0 s, 2 samples) File Copy 256 bufsize 500 maxblocks 174430.2 KBps (30.0 s, 2 samples) File Copy 4096 bufsize 8000 maxblocks 1219982.0 KBps (30.0 s, 2 samples) Pipe Throughput 1387297.9 lps (10.0 s, 7 samples) Pipe-based Context Switching 196296.1 lps (10.0 s, 7 samples) Process Creation 10889.9 lps (30.0 s, 2 samples) Shell Scripts (1 concurrent) 4073.7 lpm (60.0 s, 2 samples) Shell Scripts (8 concurrent) 550.5 lpm (60.2 s, 2 samples) System Call Overhead 1538517.4 lps (10.0 s, 7 samples) System Benchmarks Index Values BASELINE RESULT INDEX Dhrystone 2 using register variables 116700.0 16851634.7 1444.0 Double-Precision Whetstone 55.0 5182.9 942.3 Execl Throughput 43.0 4101.9 953.9 File Copy 1024 bufsize 2000 maxblocks 3960.0 635244.9 1604.2 File Copy 256 bufsize 500 maxblocks 1655.0 174430.2 1054.0 File Copy 4096 bufsize 8000 maxblocks 5800.0 1219982.0 2103.4 Pipe Throughput 12440.0 1387297.9 1115.2 Pipe-based Context Switching 4000.0 196296.1 490.7 Process Creation 126.0 10889.9 864.3 Shell Scripts (1 concurrent) 42.4 4073.7 960.8 Shell Scripts (8 concurrent) 6.0 550.5 917.5 System Call Overhead 15000.0 1538517.4 1025.7 ======== System Benchmarks Index Score 1058.3
四、脚本测出VPS的真实可用内存
很多人买到了OpenVZ的VPS，虽然表面上内存分配的很多，但是其实已经超售了很多了。用free 命令只能显示个数字而已。如果用这样一个脚本来测试最多能占用多少内存，就可以大致上了解VPS的内存超售情况。于是从一个地方翻出来了这个程序，用的C++写的，方便大家测试自己的VPS的实际可用的内存。
注意事项
这里测试的内存为 Ram+Swap的总和。Ram是指我们通常所指的内存，Swap指的是 突发内存 ，不可以长时间占用但是也是能用的。具体请百度。
测试程序
CentOS 系统：
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系统：
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
运行了之后只需要等待3秒钟就可以测试了。具体效果像下面这样：
最后说明：
这个测试的内存是指你在当前时刻实际能用的最大内存（Ram + Swap 总和）。可能会随着同一台母鸡上的用户活动而变化。（看商家放了多少活动的用户在上面）。
大家可以根绝各自的需求从不同方面来测试自己的VPS。
