Chapter 14. Kernel
The kernel is the heart of the system; it is also a complex body of software. The Linux kernel employs many different strategies for improving CPU scheduling, memory placement, disk I/O performance, and TCP performance. As with any software, sometimes things go wrong. Previous chapters instrumented the kernel to help understand application behavior. This chapter uses kernel instrumentation to understand kernel software, and will be of use for kernel troubleshooting and to aid in kernel development.
Learning Objectives:
Continue off-CPU analysis by tracing wakeups
Identify kernel memory consumers
Analyze kernel mutex lock contention
Show activity of work queue events
If you are working on a particular subsystem, you should ...
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