Linux Performance Monitoring & Troubleshooting

Course details

Course Contents

Linux Performance Monitoring & Tuning

Introduction about Performance monitoring in Linux

Important four subsystems that needs to be monitored.

• CPU
• Memory
• I/O
• Network

• Familiar & understanding with CPU Utilization
• Like Context switches, Run Queue, CPU utilization & Load Average
• Familiar & understanding with Memory Utilization
• Familiar & understanding with I/O Analyses
• Familiar & understanding with Network Monitoring

Familiar with various Commands to manage performance issues in Linux Servers

• top
• vmstat
• iostat
• free
• lsof
• tcpdump- Network Packet Analyzer

Following are the Linux performance statistics using sar command.

• Collective CPU usage
• Individual CPU statistics
• Memory used and available
• Swap space used and available
• Overall I/O activities of the system
• Individual device I/O activities
• Run queue and load average data
• Network statistics
• Report sar data from a specific time

Process Management

• Understanding ps commands with custom properties & Nice values etc
• Different stats of a process like "D", "S", "T", "Z" etc
• Kill commands to terminate the process
• Lab

Lab on lsof - List open files & fuser

• 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

• For example: number of packets received (transmitted) through the network card, statistics of packet failure etc