LINUX PERFORMANCE TUNING AND ANALYSIS – GTU21

Course Description

This class meets the needs of advanced Linux Systems Administrators expanding their knowledge of core workings of Linux. Theories and methodologies are covered for tuning, monitoring performance, and analyzing the performance of the Linux operating system.

 

OBJECTIVES:

  • Learn principles and methods of system tuning
  • Understand Linux architecture
  • Use system and networking benchmark tools for understanding system capabilities
  • Diagnose complex performance and functional system problems
  • Learn to profile system hardware and applications
  • Analyze system performance to identify patterns
  • Learn methods of remote system monitoring

Supported Distributions:

Red Hat Enterprise Linux 7

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Duration

4 days

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Target Audience

This class meets the needs of advanced Linux Systems Administrators expanding their knowledge of core workings of Linux. Theories and methodologies are covered for tuning, monitoring performance, and analyzing the performance of the Linux operating system.

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Course Prerequisites

An intermediate knowledge of the Linux operating system is required. The equivalent knowledge can be found in the GuruTeam Linux Essentials course and also our Linux Administration course. An example of this course be the following:

You can view more of our Unix/Linux courses on this link

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Suggested Follow on Courses

There are a number of options of suitable follow-on courses, depending on your business needs. Please contact us for further details.

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Course Content

1. Tuning Principles & The USE Method

  1. What is Performance Tuning?
  2. Performance Tuning Methodology
  3. Model System
  4. Establish a Baseline
  5. Establish Performance Targets
  6. Identify Bottleneck
  7. Tune
  8. Measure, Monitor, Evaluate, Repeat?
  9. Final Thoughts
  10. The USE Method
  11. Gathering USE Metrics

Lab Tasks

  1. Determining the System’s Configuration
  2. USE Method: CPU
  3. USE Method: Memory
  4. USE Method: Network
  5. USE Method: Storage I/O & Capacity

2. Linux Internals Review

  1. The Linux Operating System Components
  2. Open Standards
  3. Memory Layout
  4. Important Kernel Threads
  5. Device Files in Linux
  6. Managing Linux Device Files
  7. udev
  8. Random Numbers and /dev/random
  9. Block Devices and the Device Mapper
  10. List Block Devices
  11. SCSI Devices
  12. File Systems with Linux
  13. Hardware Discovery Tools
  14. Cache and Write Barriers
  15. Advanced LVM: Components & Object Tags
  16. Advanced LVM: Automated Storage Tiering
  17. Advanced LVM: Thin Provisioning
  18. Advanced LVM: Striping & Mirroring
  19. Advanced LVM: RAID Volumes
  20. Kernel Modules

Lab Tasks

  1. Adjusting Kernel Options
  2. Linux Kernel Driver Compilation

3. Linux Userspace Architecture

  1. systemd System and Service Manager
  2. Using systemd
  3. Security Model Overview

Lab Tasks

  1. Managing Services With Systemd’s systemctl
  2. Setting Limits with the pam_limits Modules
  3. Operation of the setuid() and capset() System Calls

 

4. Log File Administration

  1. System Logging
  2. systemd Journal
  3. systemd Journal’s journactl
  4. Secure Logging with Journal’s Log Sealing
  5. gnome-system-log
  6. Rsyslog
  7. /etc/rsyslog.conf
  8. Log Management
  9. Log Anomaly Detector
  10. Sending logs from the shell

Lab Tasks

  1. Using the systemd Journal
  2. Setting up a Full Debug Logfile

 

5. Monitoring & Troubleshooting

  1. Viewing Processes
  2. System Status Memory
  3. System Status I/O
  4. System Status CPU
  5. Performance Trending with sar
  6. Determining Service to Process Mapping
  7. Analyzing Process Memory Usage with pmap
  8. Realtime Monitoring of Resources Cgroups
  9. strace and ltrace
  10. lsof and fuser
  11. ss/netstat and rpcinfo
  12. tcpdump and wireshark

Lab Tasks

  1. Process Related Tools
  2. System Activity Reporter
  3. Cgroup for Processes
  4. Analyzing Memory Usage

 

6. Benchmark Tools

  1. Benchmark Tools
  2. Disk/Filesystem Benchmarks
  3. Network Benchmarks
  4. Phoronix Test Suite

Lab Tasks

  1. Benchmarking Disk and Filesystem
  2. Bonnie++ Visualization

 

7. Systemtap

  1. SystemTap Overview
  2. SystemTap Features
  3. SystemTap Requirements
  4. Invoking SystemTap
  5. The 5 passes of stap
  6. SystemTap Probe Point Syntax
  7. SystemTap Probe Modes
  8. SystemTap Probe Points
  9. SystemTap process Probes
  10. Listing and Using Probe Points
  11. Built-in SystemTap Functionality
  12. SystemTap Example Repositories
  13. SystemTap Advanced Example
  14. SystemTap Documentation

Lab Tasks

  1. System Tap Intro
  2. System Tap
  3. Creating SystemTap Scripts
  4. SystemTap One-liners & Histograms

 

8. Performance Co-Pilot

  1. Performance Co-Pilot Introduction
  2. PCP Architecture
  3. PCP Performance Metrics
  4. PCP Installation
  5. PCP Performance Monitoring
  6. PCP Centralized Logging
  7. PCP Inference Engine
  8. PCP Deployment Strategies
  9. PCP Advanced Topics

Lab Tasks

  1. Performance Co-Pilot Introduction
  2. Live Monitoring with pmchart
  3. Install Web Monitoring Tools

 

9. Remote Metric Gathering With SNMP

  1. SNMP Overview
  2. SNMP Operation – Query
  3. MIBs and OID Namespace
  4. SNMP Security
  5. SNMP for Linux

Lab Tasks

  1. SNMP

 

10. Linux perf

  1. perf Overview
  2. perf Commands Typical Workflow
  3. perf Events
  4. perf stat
  5. perf record
  6. perf report

Lab Tasks

  1. Perf

 

11. Linux Tunables

  1. Operating System Tuning Caveats
  2. Consider OS (or Kernel) Upgrade
  3. Tuning CPU – NUMA
  4. Tuning CPU – Scheduling
  5. Huge Memory Pages
  6. Tuning Virtual Memory Manager
  7. Tuning Virtual Memory Manager (cont.)
  8. Dropping Caches
  9. I/O Scheduler
  10. Tuning Filesystems
  11. Tuning Filesystems (cont.)
  12. Network Tuning
  13. tuned

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