28PROCESS CREATION AND PROGRAM EXECUTION IN MORE DETAIL
This chapter extends the material presented in Chapters 24 to 27 by covering a variety of topics related to process creation and program execution. We describe process accounting, a kernel feature that writes an accounting record for each process on the system as it terminates. We then look at the Linux-specific clone() system call, which is the low-level API that is used to create threads on Linux. We follow this with some comparisons of the performance of fork(), vfork(), and clone(). We conclude with a summary of the effects of fork() and exec() on the attributes of a process.
28.1 Process Accounting
When process accounting is enabled, the kernel writes an accounting record to the system-wide ...
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