RH442 Red Hat Enterprise System Monitoring and Performance Tuning

RH442 Red Hat Enterprise System Monitoring and Performance Tuning Course Description

Intended Audience for the RH442 Red Hat Enterprise System Monitoring and Performance Tuning Course

• Experienced Linux system administrators responsible for maximizing resource utilization through performance tuning.

Training Packages & Career Tracks that include the RH442 Red Hat Enterprise System Monitoring and Performance Tuning Course

• RH442 Red Hat Enterprise System Monitoring and Performance Tuning

RH442 Red Hat Enterprise System Monitoring and Performance Tuning Course Objectives

• Elements of monitoring and tuning
• Simple network monitoring (SNMP)
• Graphical reporting
• Kernel-level profiling
• Queuing theory
• Compensating for physical disk characteristics
• Reducing disk visit count
• Processes and the scheduler
• Kernel timing and process latency
• Memory addressing and allocation
• Memory caches
• Memory reclamation
• Essential network tuning

RH442 Red Hat Enterprise System Monitoring and Performance Tuning Course Outline

1. Unit 1 - Elements of Monitoring and Tuning
   1. Performance tuning is...
   2. Before you begin
   3. How much is how much?
   4. Calculating unit conversions
   5. Monitoring
   6. Monitoring vs. Profiling
   7. Whole-system view
   8. Sample application model
   9. Sample hardware model
   10. Before tuning the kernel
   11. Kernel tunables
   12. Using system documentation
   13. Recovering from problems
2. Unit 2 - Simple Network Monitoring
   1. SNMP
   2. SNMP versions
   3. Management Information Base
   4. The MIB hierarchy
   5. Referring to MIB objects
   6. Reading a MIB file
   7. Installing SNMP packages
   8. Finding MIB objects
   9. Using SNMP v1 for queries
   10. Using SNMP v3 for queries
   11. Configuring the SNMP client
   12. Enabling the SNMP agent
   13. Profiling SNMP host access controls
   14. Configuring SNMP v1 access
   15. Configuring SNMP v3 access
   16. Beyond RH442: Extending snmpd
3. Unit 3 - Graphical Reporting
   1. MRTG
   2. Configuring MRTG
   3. Allowing access to MRTG
   4. Creating a dashboard in MRTG
   5. Ad-hoc utilities
   6. Installing iostat and sar
   7. Using iostat and sar
   8. Configuring sar
   9. Awk
   10. Using awk
   11. Gnuplot
   12. Using Gnuplot
   13. Creating a custom script
   14. Scheduling a custom script
4. Unit 4 - Kernel-Level Profiling
   1. OProfile
   2. Installing OProfile
   3. Installing kernel-debuginfo
   4. Setting up OProfile
   5. Running a test
   6. Reviewing results
   7. OProfile architecture
   8. SystemTap
   9. Required packages
   10. SystemTap scripts
   11. The stap command
5. Unit 5 - Queuing Theory
   1. Introduction to queuing theory
   2. Little's Law
   3. Queue length
   4. Queue length vs wait time
   5. Wait time
   6. A closer look at wait time
   7. How much user time is needed?
   8. Profiling time with time
   9. Finding hot spots in code
   10. Completion rate
   11. Arrival rate vs completion rate
   12. Finding a valid observation period
   13. Predicting system-wide limits
   14. Predicting resource limits
   15. Summary of strategies
6. Unit 6 - Compensating for Physical Disk Characteristics
   1. Physical factors affect disk IO
   2. Disk storage density
   3. Choosing a peripheral interconnect
   4. SCSI bus considerations
   5. Electro-mechanical positioning
   6. Block IO requests and cache effect
   7. Tuning sequential read access
   8. Tuning the disk queue
   9. Tuning the deadline scheduler
   10. Tuning the anticipatory scheduler
   11. Tuning the noop scheduler
   12. Tuning the (default) cfq scheduler
   13. Fine-tuning the cfq scheduler
   14. Physical block device interfaces
   15. Virtual block devices
   16. Tuning virtual block devices
   17. Logical volumes and VBDs
   18. Implementing snapshot storage
7. Unit 7 - Reducing Disk Visit Count
   1. The virtual file system (VFS)
   2. Layout of ext2/ext3
   3. Fragmentation
   4. Viewing fragmentation
   5. Tuning fragmentation
   6. Filesystem limits
   7. Journaling
   8. Improving journal performance
   9. Tuning journal placement
   10. Other mount-time options
   11. Finding lock contention
   12. Reducing visit count with RAID
   13. Calculating chunk size
   14. Calculating filesystem stride
   15. Tuning round-robin RAID
   16. Write overhead for RAID5 and RAID6
   17. Improving RAID1 performance
   18. Tuning RAID1
   19. Tuning RAID in SysFS
8. Unit 8 - Processes and the Scheduler
   1. Characterizing process states
   2. Getting ready to run
   3. Types of CPU cache
   4. Locality of reference
   5. Improving locality of reference
   6. Multitasking and the run queue
   7. Preempting the current process
   8. Sorting the run queue
   9. SCHED_OTHER
   10. Tuning scheduler policy
   11. Viewing CPU performance data
9. Unit 9 - Kernel Timing and Process Latency
   1. How Linux tracks time
   2. Tuning system ticks
   3. Tuning processor speed
   4. IRQ balancing
   5. Tuning IRQ affinity
   6. Equalizing CPU visit count
   7. Tuning process affinity with taskset
   8. Tuning run queue length with taskset
   9. Hot-plugging CPUs
   10. Scheduler domains
   11. Configuring the root cpuset
   12. Configuring a child cpuset
   13. Important files for scheduler domains
   14. Virtual CPUs
   15. Tuning VCPUs at domain creation
   16. Tuning VCPUs dynamically
   17. Tuning VCPU affinity
10. Unit 10 - Memory Addressing and Allocation
    1. Overview of memory addressing
    2. Virtual address space (32-bit)
    3. Viewing process address space
    4. Tuning process address space
    5. Physical address space
    6. Mapping virtual addresses (x86)
    7. Uniform memory architecture (x86)
    8. Overview of memory allocation
    9. Improving RAM performance
    10. Improving MMU performance
    11. Tuning the NUMA allocator
    12. Improving TLB performance
    13. Tuning TLB performance
    14. Viewing system calls
    15. Virtual domain memory
    16. Tuning memory at domain creation
    17. Tuning domain memory dynamically
    18. Recovering unassigned memory
11. Unit 11 - Memory Caches
    1. Strategies for using memory
    2. A closer look at demand paging
    3. Tuning page allocation
    4. Tuning overcommit
    5. Slab cache
    6. ARP cache
    7. Tuning ARP cache
    8. Page cache
    9. Tuning page cache
    10. Anonymous pages
    11. SysV IPC
    12. Tuning SysV IPC
    13. Viewing memory with free
    14. Other commands to view memory usage
12. Unit 12 - Memory Reclamation
    1. Characterizing page status
    2. Calculating dirty and clean memory
    3. Reclaiming dirty pages
    4. Tuning pdflush
    5. Reclaiming clean pages
    6. Out-of-memory killer
    7. Tuning OOM policy
    8. What is swap?
    9. Improving swap performance
    10. Tuning swappiness
    11. Tuning swap size
    12. Tuning swap for think time
    13. Tuning swap visit count
    14. Monitoring memory usage
13. Unit 13 - Essential Network Tuning
    1. Simplified transmit model
    2. Simplified receive model
    3. Kernel socket buffers
    4. Calculating total buffer size
    5. Calculating per-socket buffer size
    6. Tuning core buffer size
    7. Tuning TCP buffer size
    8. Tuning DMA buffer size
    9. Is packet fragmentation a problem?
    10. Tuning fragmentation buffers
    11. Network interrupt handling
    12. Improving interrupt handling
    13. Tuning interrupt handling
    14. Network sockets
    15. TCP sockets
    16. Viewing network sockets
    17. Tuning TCP socket creation
    18. Tuning TCP socket keepalive

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