nmon performance: A free tool to analyze AIX and Linux performance

http://www.ibm.com/developerworks/aix/library/au-analyze_aix/

The nmon tool is designed for AIX and Linux performance specialists to use for monitoring and analyzing performance data, including:

• CPU utilization
• Memory use
• Kernel statistics and run queue information
• Disks I/O rates, transfers, and read/write ratios
• Free space on file systems
• Disk adapters
• Network I/O rates, transfers, and read/write ratios
• Paging space and paging rates
• CPU and AIX specification
• Top processors
• IBM HTTP Web cache
• User-defined disk groups
• Machine details and resources
• Asynchronous I/O -- AIX only
• Workload Manager (WLM) -- AIX only
• IBM TotalStorage® Enterprise Storage Server® (ESS) disks -- AIX only
• Network File System (NFS)
• Dynamic LPAR (DLPAR) changes -- only pSeries p5 and OpenPower for either AIX or Linux

Also included is a new tool to generate graphs from the nmon output and create .gif files that can be displayed on a Web site.

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