UnixBench是一個類unix系（Unix，BSD，Linux）統下的性能測試工具，一個開源工具，被廣泛用與測試linux系統主機的性能
所謂跑分工具，不僅各項的測試有得分，最后跑完也會有一個綜合的得分，這個分數是怎么來了？
其實，這個值是測試系統的測試結果與一個基線系統測試結果比較得到的指數值。
源於1995 年，基線系統是“George”，一個工作站：SPARCstation 20‐61，128MB RAM，Solaris2.3，此系統的指數值被設定為10，所以，如果一個系統的最后結果分數為520，意思是指此系統比基線系統運行快52 倍。
安裝使用
Unixbench-5.1.2.tar.gz下載地址：http://soft.vpser.net/test/unixbench/
居然是2009年的版本，不得不說真是夠老的
執行以下命令下載和安裝：
cd /usr/local wget http://soft.vpser.net/test/unixbench/unixbench-5.1.2.tar.gz tar zxvf unixbench-5.1.2.tar.gz cd unixbench-5.1.2
如果不需要進行圖形測試或者不在圖形化界面下測試，則將Makefile文件中GRAPHIC_TESTS = defined注釋掉（README文件中有說明）
然后make
make
如果make的時候報這個錯：
這是因為上述圖形測試的配置沒有注釋掉，而x11就是圖形界面配置，處理：yum install xorg-x11* ，如果上述的GRAPHIC_TESTS = defined注釋掉而忽略了圖形測試，就不會報這個錯
如上圖，確定make成功，再Run
./Run
執行Run的時候如果報：Can't locate Time/HiRes.pm in @INC
處理：yum -y install perl-Time-HiRes
跑分結果
然后等待程序進行測試即可,這個過程可能比較漫長,請耐心等待，最后跑完將會有一個分數在底部出現，通常情況下1000分以上的VPS是性能較好的。
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Version 5.1.3 Based on the Byte Magazine Unix Benchmark
Multi-CPU version Version 5 revisions by Ian Smith,
Sunnyvale, CA, USA
January 13, 2011 johantheghost at yahoo period com
------------------------------------------------------------------------------
Use directories for:
* File I/O tests (named fs***) = /opt/unixbench/UnixBench/tmp
* Results = /opt/unixbench/UnixBench/results
------------------------------------------------------------------------------
1 x Dhrystone 2 using register variables 1 2 3 4 5 6 7 8 9 10
1 x Double-Precision Whetstone 1 2 3 4 5 6 7 8 9 10
1 x Execl Throughput 1 2 3
1 x File Copy 1024 bufsize 2000 maxblocks 1 2 3
1 x File Copy 256 bufsize 500 maxblocks 1 2 3
1 x File Copy 4096 bufsize 8000 maxblocks 1 2 3
1 x Pipe Throughput 1 2 3 4 5 6 7 8 9 10
1 x Pipe-based Context Switching 1 2 3 4 5 6 7 8 9 10
1 x Process Creation 1 2 3
1 x System Call Overhead 1 2 3 4 5 6 7 8 9 10
1 x Shell Scripts (1 concurrent) 1 2 3
1 x Shell Scripts (8 concurrent) 1 2 3
4 x Dhrystone 2 using register variables 1 2 3 4 5 6 7 8 9 10
4 x Double-Precision Whetstone 1 2 3 4 5 6 7 8 9 10
4 x Execl Throughput 1 2 3
4 x File Copy 1024 bufsize 2000 maxblocks 1 2 3
4 x File Copy 256 bufsize 500 maxblocks 1 2 3
4 x File Copy 4096 bufsize 8000 maxblocks 1 2 3
4 x Pipe Throughput 1 2 3 4 5 6 7 8 9 10
4 x Pipe-based Context Switching 1 2 3 4 5 6 7 8 9 10
4 x Process Creation 1 2 3
4 x System Call Overhead 1 2 3 4 5 6 7 8 9 10
4 x Shell Scripts (1 concurrent) 1 2 3
4 x Shell Scripts (8 concurrent) 1 2 3
========================================================================
BYTE UNIX Benchmarks (Version 5.1.3)
System: jollypay-temp-west3-b: GNU/Linux
OS: GNU/Linux -- 2.6.32-754.6.3.el6.x86_64 -- #1 SMP Tue Oct 9 17:27:49 UTC 2018
Machine: x86_64 (x86_64)
Language: en_US.utf8 (charmap="UTF-8", collate="UTF-8")
CPU 0: Intel(R) Xeon(R) CPU @ 2.20GHz (4400.0 bogomips)
Hyper-Threading, x86-64, MMX, Physical Address Ext, SYSENTER/SYSEXIT, SYSCALL/SYSRET
CPU 1: Intel(R) Xeon(R) CPU @ 2.20GHz (4400.0 bogomips)
Hyper-Threading, x86-64, MMX, Physical Address Ext, SYSENTER/SYSEXIT, SYSCALL/SYSRET
CPU 2: Intel(R) Xeon(R) CPU @ 2.20GHz (4400.0 bogomips)
Hyper-Threading, x86-64, MMX, Physical Address Ext, SYSENTER/SYSEXIT, SYSCALL/SYSRET
CPU 3: Intel(R) Xeon(R) CPU @ 2.20GHz (4400.0 bogomips)
Hyper-Threading, x86-64, MMX, Physical Address Ext, SYSENTER/SYSEXIT, SYSCALL/SYSRET
10:30:35 up 1 day, 2:18, 1 user, load average: 0.00, 2.32, 3.56; runlevel 2019-09-03
------------------------------------------------------------------------
Benchmark Run: Wed Sep 04 2019 10:30:35 - 10:58:40
4 CPUs in system; running 1 parallel copy of tests
Dhrystone 2 using register variables 34613434.1 lps (10.0 s, 7 samples)
Double-Precision Whetstone 3992.3 MWIPS (9.8 s, 7 samples)
Execl Throughput 2758.2 lps (30.0 s, 2 samples)
File Copy 1024 bufsize 2000 maxblocks 596563.4 KBps (30.0 s, 2 samples)
File Copy 256 bufsize 500 maxblocks 157148.4 KBps (30.0 s, 2 samples)
File Copy 4096 bufsize 8000 maxblocks 1993247.6 KBps (30.0 s, 2 samples)
Pipe Throughput 846280.4 lps (10.0 s, 7 samples)
Pipe-based Context Switching 66686.0 lps (10.0 s, 7 samples)
Process Creation 9193.8 lps (30.0 s, 2 samples)
Shell Scripts (1 concurrent) 6545.1 lpm (60.0 s, 2 samples)
Shell Scripts (8 concurrent) 1845.8 lpm (60.0 s, 2 samples)
System Call Overhead 770011.2 lps (10.0 s, 7 samples)
System Benchmarks Index Values BASELINE RESULT INDEX
Dhrystone 2 using register variables 116700.0 34613434.1 2966.0
Double-Precision Whetstone 55.0 3992.3 725.9
Execl Throughput 43.0 2758.2 641.4
File Copy 1024 bufsize 2000 maxblocks 3960.0 596563.4 1506.5
File Copy 256 bufsize 500 maxblocks 1655.0 157148.4 949.5
File Copy 4096 bufsize 8000 maxblocks 5800.0 1993247.6 3436.6
Pipe Throughput 12440.0 846280.4 680.3
Pipe-based Context Switching 4000.0 66686.0 166.7
Process Creation 126.0 9193.8 729.7
Shell Scripts (1 concurrent) 42.4 6545.1 1543.7
Shell Scripts (8 concurrent) 6.0 1845.8 3076.3
System Call Overhead 15000.0 770011.2 513.3
========
System Benchmarks Index Score 1026.6
------------------------------------------------------------------------
Benchmark Run: Wed Sep 04 2019 10:58:40 - 11:26:50
4 CPUs in system; running 4 parallel copies of tests
Dhrystone 2 using register variables 95155661.1 lps (10.0 s, 7 samples)
Double-Precision Whetstone 13919.5 MWIPS (10.1 s, 7 samples)
Execl Throughput 9771.0 lps (30.0 s, 2 samples)
File Copy 1024 bufsize 2000 maxblocks 654810.9 KBps (30.0 s, 2 samples)
File Copy 256 bufsize 500 maxblocks 172827.2 KBps (30.0 s, 2 samples)
File Copy 4096 bufsize 8000 maxblocks 2165387.5 KBps (30.0 s, 2 samples)
Pipe Throughput 2389790.1 lps (10.0 s, 7 samples)
Pipe-based Context Switching 260110.9 lps (10.0 s, 7 samples)
Process Creation 32641.6 lps (30.0 s, 2 samples)
Shell Scripts (1 concurrent) 14169.4 lpm (60.0 s, 2 samples)
Shell Scripts (8 concurrent) 1949.0 lpm (60.1 s, 2 samples)
System Call Overhead 2196105.6 lps (10.0 s, 7 samples)
System Benchmarks Index Values BASELINE RESULT INDEX
Dhrystone 2 using register variables 116700.0 95155661.1 8153.9
Double-Precision Whetstone 55.0 13919.5 2530.8
Execl Throughput 43.0 9771.0 2272.3
File Copy 1024 bufsize 2000 maxblocks 3960.0 654810.9 1653.6
File Copy 256 bufsize 500 maxblocks 1655.0 172827.2 1044.3
File Copy 4096 bufsize 8000 maxblocks 5800.0 2165387.5 3733.4
Pipe Throughput 12440.0 2389790.1 1921.1
Pipe-based Context Switching 4000.0 260110.9 650.3
Process Creation 126.0 32641.6 2590.6
Shell Scripts (1 concurrent) 42.4 14169.4 3341.8
Shell Scripts (8 concurrent) 6.0 1949.0 3248.4
System Call Overhead 15000.0 2196105.6 1464.1
========
System Benchmarks Index Score 2235.2
======= Script description and score comparison completed! =======
跑完會有兩個分數結果，一個是 1 parallel process 的結果，另一個是4 parallel process 的結果 （如果是單核只會跑一次）。兩者的區別即一個是單進程跑，一個是多進程跑 。
默認測試完成后測試結果會存放在results目錄
對測試項目的說明：
對以上跑分項的詳細說明參考：https://blog.csdn.net/qq_36357820/article/details/79959445
額外說明
針對Pipe-based Context Switching測試項結果異常的問題，參考一篇博文：http://www.sohu.com/a/248896408_100113911
使用博文中提及的https://github.com/qcsuper/byte-unixbench的5.1.3版本
阿里雲VM還是跑出了單項907.7的高分，gcp的VM只有166.7.....