Course Contents
Linux Performance Monitoring & Tuning
Introduction about Performance monitoring in Linux
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Monitoring Processes using ps command
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Monitoring Processes using top command
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Monitoring memory usage
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Monitoring File System Usage
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GNOME System Monitor
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Practice Lab Session
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Overview Sysstat Package Utilities
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Lab – Iostat command
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Lab – mpstat command
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Lab – pidstat command
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Overview SAR
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Advantages of SAR
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Lab – SAR
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Scheduling tasks with Systemd timer
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Monitoring Systems using Cockpit
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Monitoring Systems using performance co-pilot
Familiar with various Commands to manage performance issues in Linux Servers
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top
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vmstat
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iostat
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free
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lsof
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tcpdump- Network Packet Analyzer
Following are the Linux performance statistics using sar command.
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Collective CPU usage
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Individual CPU statistics
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Memory used and available
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Swap space used and available
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Overall I/O activities of the system
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Individual device I/O activities
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Run queue and load average data
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Network statistics
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Report sar data from a specific time
Viewing Hardware Resources
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Viewing kernel messages using dmesg command
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Retrieving CPU Information
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Retrieving DMI Information – dmidecode
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Retrieving peripheral Information
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hwloc & lshw command
Configuring Kernel Tunables
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Proc File System
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Kernel Tunables
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Modifying Kernel Tunables
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Modify Kernel Tunables Using Sysctl Command
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Modify Kernel Tunables Persistently
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Sysfs File System
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About Kernel Modules
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Practice Lab Session
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Overview about tuning profiles
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Managing profiles from the command line
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Lab Session – Tuning profile
Managing Resource Limits
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Limiting System Resources with ulimit
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Configuring Persistent ulimit Rules
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Practice Lab Session
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Setting Limits for Services
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Lab – Configure the service with a cgroup
Process Management
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Understanding ps commands with custom properties & Nice values etc
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Different stats of a process like “D”, “S”, “T”, “Z” etc
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Kill commands to terminate the process
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Lab
Linux Find Commands
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Basic find commands for finding files with names
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Find files based on their permissions
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Search files based on owners & groups
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Find files and directories based on date & time
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Find files and directories based on size
Top Running Processes
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Command to list out top processes consuming highest memory utilization
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Command to list out top processes consuming highest cpu utilization
Lab on lsof – List open files & fuser
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lsof command used in many Linux/Unix like system that is used to display list of all the open files and the processes.
Lab on tcpdump- Network Packet Analyzer
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For example: number of packets received (transmitted) through the network card, statistics of packet failure etc
Practice Lab Sessions
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Practical Lab Session – High CPU Utilization
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Practical Lab Session – High Memory Utilization
