January 2004
Intermediate to advanced
432 pages
11h 1m
English
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The Kernel File System Tables
The kernel must maintain a complete list of all opened files on the system, active mount points, and what is mounted there. Performance requires that many file system structures be maintained in core-resident inode caches and buffer caches as well as in a variety of tables.
The System File Table
Each discrete, open system call results in an entry to the system file table (see Figure 3-13). If the same file is opened 20 times, there will be 20 separate entries in the table. Discrete entries are required because this table keeps track of the type of open (read or write), the current offset into the file, and the number of linkages to it. As the various processes are terminated, their file descriptors are closed, and ...
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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.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.