Nmon 工具是 IBM 提供的免费的监控 AIX 系统与 Linux 系统资源的工具。该工具可实时监控系统性能，也可以将服务器的系统资源耗用情况收集起来并输出一个特定的文件,并可利用 excel 分析工具进行数据的统计分析,非常利用 UNIX 或者 Linux 系统的性能数据分析。

1.下载地址
nmon官网
NMON_Analyser官网
本地下载nmon
本地下载nmon_analyser

2.安装nmon
在压缩包中找到相应的版本，上传至服务器，然后授予执行权限

3.主要操作说明

+-HELP---------most-keys-toggle-on/off------------------------------------------+
|h = Help information     q = Quit nmon             0 = reset peak counts       |
|+ = double refresh time  - = half refresh          r = ResourcesCPU/HW/MHz/AIX |
|c = CPU by processor     C=upto 128 CPUs           p = LPAR Stats (if LPAR)    |
|l = CPU avg longer term  k = Kernel Internal       # = PhysicalCPU if SPLPAR   |
|m = Memory & Paging      M = Multiple Page Sizes   P = Paging Space            |
|d = DiskI/O Graphs       D = DiskIO +Service times o = Disks %Busy Map         |
|a = Disk Adapter         e = ESS vpath stats       V = Volume Group stats      |
|^ = FC Adapter (fcstat)  O = VIOS SEA (entstat)    v = Verbose=OK/Warn/Danger  |
|n = Network stats        N=NFS stats (NN for v4)   j = JFS Usage stats         |
|A = Async I/O Servers    w = see AIX wait procs   "="= Net/Disk KB<-->MB       |
|b = black&white mode     g = User-Defined-Disk-Groups (see cmdline -g)         |
|t = Top-Process --->     1=basic 2=CPU-Use 3=CPU(default) 4=Size 5=Disk-I/O    |
|u = Top+cmd arguments    U = Top+WLM Classes       . = only busy disks & procs |
|W = WLM Section          S = WLM SubClasses)                                   |

4.实时监控结果
1)监控内存使用情况

| Memory -----------------------------------------------------------------------|
|          Physical  PageSpace |        pages/sec  In     Out | FileSystemCache |
|% Used       93.8%     34.3%  | to Paging Space   0.0    0.0 | (numperm) 44.3% |
|% Free        6.2%     65.7%  | to File System    0.0  257.9 | Process   18.2% |
|MB Used    1786.0MB   175.8MB | Page Scans        0.0        | System    31.4% |
|MB Free     118.0MB   336.2MB | Page Cycles       0.0        | Free       6.2% |
|Total(MB)  1904.0MB   512.0MB | Page Steals       0.0        |           ------|
|                              | Page Faults     279.9        | Total    100.0% |
|------------------------------------------------------------ | numclient 44.3% |
|Min/Maxperm     361MB( 19%)  1443MB( 76%) <--% of RAM        | maxclient 75.8% |
|Min/Maxfree     960   1088       Total Virtual    2.4GB      | User      58.4% |
|Min/Maxpgahead    2      8    Accessed Virtual    0.9GB 40.1%| Pinned    28.6% |
|-------------------------------------------------------------------------------|

2）监控cpu使用情况

|                           0----------25-----------50----------75----------100
|CPU User%  Sys% Wait% Idle%|           |            |           |            |
|  0   0.0   0.0   0.0 100.0|>                                                |
|  1   0.0   0.0   0.0 100.0|>          |
|  2   0.0   0.0   0.0 100.0|>                                                |
|  3   0.0   0.0   0.0 100.0|>                                                |
|Physical Averages          +-----------|------------|-----------|------------+
|All   0.2   2.5   0.7  96.6|>                                                |
|                           +-----------|------------|-----------|------------+

3）监控进程状态

| Top-Processes-(147) -----Mode=3  [1=Basic 2=CPU 3=Perf 4=Size 5=I/O 6=Cmds]-----------------------------|
|  PID       %CPU     Size      Res     Res      Res     Char    RAM      Paging         Command          |
|            Used       KB      Set     Text     Data     I/O     Use   io   other repage                 |
| 1908868     0.8    30508    29764      132    29632        2    2%      0      3      0 secldapclntd    |
| 2306196     0.7      512      512        0      512        0    0%      1      8      0 trclogio        |
| 2732116     0.6     2520        0        0        0        0    0%      0     33      0 <defunct Zombie>|
|  340036     0.2     1416      296       72      224        0    0%      0      0      0 dtgreet         |

5.监控一段时间性能

-f            spreadsheet output format [note: default -s300 -c288]
optional
 -s <seconds>  between refreshing the screen [default 2]
 -c <number>   of refreshes [default millions]
 -t            spreadsheet includes top processes
具体信息nmon -h

例如：nmon -f -t -s 30 -c 120
-s 30:每30秒进行一次数据采集
-c 120:一共采集120次

6.分析数据
打开nmon analyser，设置宏的安全级别是低 ，之后点击 Analyser NMON data 按钮 输入文件 保存成excel格式即可。