System information

14 Tuning the Task Scheduler 165
14.1 Introduction ................................................................................... 165
14.2 Process Classification ...................................................................... 166
14.3 O(1) Scheduler ............................................................................... 167
14.4 Completely Fair Scheduler ............................................................... 168
14.5 For More Information ..................................................................... 176
15 Tuning the Memory Management Subsystem 179
15.1 Memory Usage ............................................................................... 180
15.2 Reducing Memory Usage ................................................................. 182
15.3 Virtual Memory Manager (VM) Tunable Parameters ............................ 183
15.4 Non-Uniform Memory Access (NUMA) ............................................ 185
15.5 Monitoring VM Behavior ................................................................. 186
16 Tuning the Network 187
16.1 Configurable Kernel Socket Buffers .................................................. 187
16.2 Detecting Network Bottlenecks and Analyzing Network Traffic ............. 189
16.3 Netfilter ......................................................................................... 189
16.4 For More Information ..................................................................... 190
VI Handling System Dumps 191
17 Tracing Tools 193
17.1 Tracing System Calls with strace ....................................................... 193
17.2 Tracing Library Calls with ltrace ....................................................... 197
17.3 Debugging and Profiling with Valgrind .............................................. 198
17.4 For More Information ..................................................................... 203
18 kexec and kdump 205
18.1 Introduction ................................................................................... 205