January 2004
Intermediate to advanced
432 pages
11h 1m
English
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The proc Table
For a process to exist (at least from the point of view of the kernel), a proc data structure must be placed in the system proc table. Prior to HP-UX 11i, the proc table was a static array, the kernel pointer *proc defined its beginning, and the size was tuned via the kernel parameter nproc. The proc table is one of the largest tables in the kernel (at HP-UX 11.00, each proc structure was 700 bytes), and tuning nproc could significantly alter the size of the kernel. This effect was amplified, since many additional kernel data structures were sized in proportion to nproc.
With the release of HP-UX 11i, the proc table has become dynamic (see Figure 5-2). This means that individual proc structures are allocated from kernel memory ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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