Content Inside :
Introduction, The Philosophy of System Administration : Automate Everything, Document Everything, Communicate as Much as Possible, Resource Monitoring : Basic Concepts, System Performance Monitoring Monitoring CPU Power, Bandwidth Monitoring, Bandwidth and Processing Power, Physical and Virtual Memory. Managing Storage, Managing User Accounts and Resource Access. Backup and recovery, managing disaster. This guide assumes you have a limited amount of experience as a Linux user, but no Linux system administration experience. If you are completely new to Linux in general (and Red Hat Linux in particular), you should start by reading the Red Hat Linux Getting Started Guide. A better solution than using free -s would be to run free using the watch command. For example, to display memory utilization every two seconds (the default display interval), use this command: While free displays only memory-related information, the top command does a little bit of everything. CPU utilization, process statistics, memory utilization top does it all. In addition, unlike the free command, top’s default behavior is to run continuously; there is no need to use the watch command. Here is a sample display: The format of a sar report produced by the default Red Hat Linux configuration consists of multiple sections, with each section containing a specific type of data, ordered by the time of day that the data was collected. Since sadc is configured to perform a one-second measurement interval every ten minutes, the default sar reports contain data in ten-minute increments, Monitoring CPU Utilization on Red Hat Linux Unlike bandwidth, monitoring CPU utilization is much more straightforward. From a single percentage of CPU utilization in GNOME System Monitor, to the more in-depth statistics reported by sar, it is possible to accurately determine how much CPU power is being consumed and by what.
Tags : system administration experience, linux system administration, red hat linux, gnome system, minute increments, power bandwidth, red hat linux 9, memory utilization, depth statistics, bandwidth monitoring, free displays, cpu utilization, virtual memory, linux user, cpu power
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