openSUSE Leap Documentation › System Analysis and Tuning Guide › Kernel Tuning
ContentsContents
System Analysis and Tuning Guide
  1. About This Guide
  2. I Basics
    1. 1 General Notes on System Tuning
  3. II System Monitoring
    1. 2 System Monitoring Utilities
    2. 3 Analyzing and Managing System Log Files
  4. III Kernel Monitoring
    1. 4 SystemTap—Filtering and Analyzing System Data
    2. 5 Kernel Probes
    3. 6 Hardware-Based Performance Monitoring with Perf
    4. 7 OProfile—System-Wide Profiler
  5. IV Resource Management
    1. 8 General System Resource Management
    2. 9 Kernel Control Groups
    3. 10 Automatic Non-Uniform Memory Access (NUMA) Balancing
    4. 11 Power Management
  6. V Kernel Tuning
    1. 12 Tuning I/O Performance
    2. 13 Tuning the Task Scheduler
    3. 14 Tuning the Memory Management Subsystem
    4. 15 Tuning the Network
  7. VI Handling System Dumps
    1. 16 Tracing Tools
    2. 17 Kexec and Kdump
  8. VII Synchronized Clocks with Precision Time Protocol
    1. 18 Precision Time Protocol
  9. A GNU Licenses
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Applies to openSUSE Leap 42.1

Part V Kernel Tuning

12 Tuning I/O Performance

I/O scheduling controls how input/output operations will be submitted to storage. openSUSE Leap offers various I/O algorithms—called elevators— suiting different workloads. Elevators can help to reduce seek operations, can prioritize I/O requests, or make sure, and I/O request is carried out before …

13 Tuning the Task Scheduler

Modern operating systems, such as openSUSE® Leap, normally run many different tasks at the same time. For example, you can be searching in a text file while receiving an e-mail and copying a big file to an external hard disk. These simple tasks require many additional processes to be run by the syst…

14 Tuning the Memory Management Subsystem

To understand and tune the memory management behavior of the kernel, it is important to first have an overview of how it works and cooperates with other subsystems.

15 Tuning the Network

The network subsystem is rather complex and its tuning highly depends on the system use scenario and also on external factors such as software clients or hardware components (switches, routers, or gateways) in your network. The Linux kernel aims more at reliability and low latency than low overhead …

→Chapter 12 Tuning I/O Performance←Chapter 11 Power Management
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