Overview
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Learn Linux performance tuning. Discover how to determine bottlenecks, find resource usage information, and improve the performance of Linux systems.
Syllabus
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Introduction
- Welcome
- What you should know
- What do we mean by performance?
- Timing techniques
- Timing techniques solution
- The proc filesystem
- Packages for performance
- Performance Co-Pilot and Tuna
- SystemTap and Berkeley Packet Filter
- top for CPU usage
- sar for CPU
- /proc/cpuinfo
- Scheduling: nice, priorities, and process classes
- Throughput vs. response time
- The Linux kernel and responsiveness
- What is a memory leak?
- /proc/meminfo, free, and swap space
- top and htop for memory usage
- CPU caches and page caches
- Page sizes and page faults
- Challenge: Finding memory bottlenecks
- Solution: Finding memory bottlenecks
- Hard disks and SSD behavior
- sar and atop tools and disk utilization
- Filesystem types and performance
- Challenge: Disk bottlenecks
- Solution: Disk bottlenecks
- Next steps
