SYSSTAT Howto: A Deployment and Configuration Guide for Linux ServersAug 11, 2009, 12:03 (0 Talkback[s])
(Other stories by Jonathan Peck)
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"The four main components used in collection activities are sar, sa1, sa2 and cron. Sar is the system activity reporter. This tool will display interpreted results from the collected data. Sar is ran interactively by an administrator via command line. When a sar file is created, it is written into the /var/log/sa directory and named sar##. The ## is a numerical value that represents the day of the month (i.e. sa03 would be the third day of the month). The numerical value changes accordingly without system administrator intervention. There are many option flags to choose from to display data in a sar file to view information about server operations, such as cpu, network activity, NFS and sockets. These options can be viewed by reviewing the man pages of sar.
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