Chapter 21. Monitoring and Tuning the Kernel

In This Chapter

Using the /proc Directory Optimizing Virtual Memory Managing Memory with NUMA Using AltSysRq to Execute System Requests Saving Kernel Dumps for Analysis Setting SMP IRQ Affinity Enabling NMI Watchdog for Locked Systems

The previous chapter, “Monitoring System Resources,” details how to monitor filesystems, system processes, CPU utilization, physical and virtual memory, and the network subsystem. This chapter dives even deeper into the system by discussing the monitoring and tuning of the kernel including how it manages memory, how it assigns processes to each processor in a multi-processor system, and how to gather information from the kernel when the system appears to be unresponsive.