A rather complete picture of memory usage can be obtain by viewing

Memory >>> A rather complete picture of memory usage can be obtain by viewing the following pseudofile: >>> Linux for Developers

/sys/meminfo

/proc/meminfo

/proc/memory

/proc/cpuinfo

This contains a detailed view of memory usage.

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There is no uniform prescription for how much swap space to use.

Prescriptions vary, but the most common choice is swap size = RAM size.

Using swap space lets the system pretend it has more memory than it physically has.

Swap extends your physical memory.

Memory used directly by the Linux kernel is never swapped out.

Kernel memory is “pinned” unlike that used by applications.

Using swap space ties up system memory, but boosts performance.

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A thread may contain many processes.

A process may contain many threads.

Multithreaded processes are common.

A process may contain only one thread.

The pthreads library enables multithreaded applications to be written just once for many different operating systems.

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Suspends the system until more memory becomes available

Tries to keep the system running by killing processes which are using more memory than can be supplied

The idea is to keep running or at least get a graceful shutdown

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swapoff

The only three swap utilities are mkswap, swapon and swapoff.

swapchk

mkswap

The only three swap utilities are mkswap, swapon and swapoff.

swapon

The only three swap utilities are mkswap, swapon and swapoff.

swap

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Which of the following utilities can be used to monitor I/O activity? (We encourage you to try all of them, as this is the best way to learn)

Basic information about the characteristics of a user's account can be found in:

Which of the following pseudo directories are empty when the system is not running (Select all answers that apply)?

What is the proper order of system initialization stages on most x86-based systems?

Depending on Linux distribution, which commands can install the libaio package and any packages it needs to function that are not already installed

Which chapter in man contains information about standard user commands?

Which statements are true?

Which networking configuration interface is newer and has extended capabilities?

In the X Window System:

Which of the following statements is true?

Which of the following commands would add newbin, a directory in your home directory, to the PATH (Select all answers that apply)?