Jump To Close Expand all Collapse all Table of contents Tuning Guide Preface 1. Before You Start Tuning Your Red Hat Enterprise Linux for Real Time System Expand section "1. Before You Start Tuning Your Red Hat Enterprise Linux for Real Time System" Collapse section "1. Before You Start Tuning Your Red Hat Enterprise Linux for Real Time System" 1.1. Running Latency Tests and Interpreting Their Results Expand section "1.1. Running Latency Tests and Interpreting Their Results" Collapse section "1.1. Running Latency Tests and Interpreting Their Results" 1.1.1. Preliminary Steps 1.1.2. Testing the System Real-time Performance under Load 2. General System Tuning Expand section "2. General System Tuning" Collapse section "2. General System Tuning" 2.1. Using the Tuna Interface 2.2. Setting Persistent Tuning Parameters 2.3. Setting BIOS Parameters 2.4. Interrupt and Process Binding 2.5. File System Determinism Tips 2.6. Using Hardware Clocks for System Timestamping 2.7. Avoid Running Extra Applications 2.8. Swapping and Out of Memory Tips 2.9. Network Determinism Tips 2.10. syslog Tuning Tips 2.11. The PC Card Daemon 2.12. Reduce TCP Performance Spikes 2.13. System Partitioning 2.14. Reduce CPU Performance Spikes 3. Realtime-Specific Tuning Expand section "3. Realtime-Specific Tuning" Collapse section "3. Realtime-Specific Tuning" 3.1. Setting Scheduler Priorities Expand section "3.1. Setting Scheduler Priorities" Collapse section "3.1. Setting Scheduler Priorities" 3.1.1. Changing the priority of service during boot process 3.1.2. Configuring the CPU usage of a service 3.2. Using kdump and kexec with the Red Hat Enterprise Linux for Real Time Kernel 3.3. TSC Timer Synchronization on Opteron CPUs 3.4. Infiniband 3.5. RoCEE and High Performance Networking 3.6. Non-Uniform Memory Access 3.7. Reducing the TCP Delayed ACK Timeout 3.8. Using debugfs 3.9. Using the ftrace Utility for Tracing Latencies 3.10. Latency Tracing Using trace-cmd 3.11. Using sched_nr_migrate to Limit SCHED_OTHER Task Migration. 3.12. Real Time Throttling 3.13. Isolating CPUs Using tuned-profiles-realtime 3.14. Offloading RCU Callbacks 4. Application Tuning and Deployment Expand section "4. Application Tuning and Deployment" Collapse section "4. Application Tuning and Deployment" 4.1. Signal Processing in Real-time Applications 4.2. Using sched_yield and Other Synchronization Mechanisms 4.3. Mutex Options 4.4. TCP_NODELAY and Small Buffer Writes 4.5. Setting Real-time Scheduler Priorities 4.6. Loading Dynamic Libraries 4.7. Using _COARSE POSIX Clocks for Application Timestamping 4.8. About Perf 5. More Information Expand section "5. More Information" Collapse section "5. More Information" 5.1. Reporting Bugs A. Event Tracing B. Detailed Description of Ftrace C. Revision History Legal Notice Settings Close Language: English 日本語 Language: English 日本語 Format: Multi-page Single-page PDF Format: Multi-page Single-page PDF Language and Page Formatting Options Language: English 日本語 Language: English 日本語 Format: Multi-page Single-page PDF Format: Multi-page Single-page PDF Appendix A. Event Tracing See Event Tracing by Theodore Ts'o. Previous Next
