Instructions for using Nmon in Oracle

The Nmon tool is a free, IBM-supplied tool for monitoring AIX systems and Linux system resources. The tool can monitor the performance of the system in real time, collect the server's system resource consumption and output a specific file, and analyze the data by using Excel analysis tools, and use the performance data analysis of UNIX or Linux system.

1. Download Address

Nmon official website

Nmon_analyser official website

Local download Nmon

Local download Nmon_analyser

2. Install Nmon

Locate the appropriate version in the compressed package, upload it to the server, and then grant execution permissions

3. Main operation Instructions

+-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 |

More Wonderful content: http://www.bianceng.cn/database/Oracle/

|n = Network stats n=nfs stats (NN for v4) j = JFS Usage Stats |

| A = Async I/o Servers w = "AIX wait procs" = Net/disk KB<-->MB |

|b = black&white Mode g = user-defined-disk-groups (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. Real-time monitoring results

1) Monitor Memory usage

| 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% |

|------------------------------------------------------------ | 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% |