March 2004
Intermediate to advanced
560 pages
14h 38m
English
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8.13. Expensive System Calls
The most expensive system calls from the standpoint of memory are fork(2) and exec(2), malloc(2), and mmap(2). Fork(2) and exec(2) require extensive new memory allocation for VAS/pregion structures; vfork(2) offers a partial remedy (see Section 8.5.1, “fork and vfork” on page 235).
Malloc(2) and mmap(2) also are expensive calls because they have a high amount of overhead per invocation, so calling them frequently can result in high CPU overhead.
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
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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