shared memory size

DescriptionPHP 5.5+ version above, you can use PHP's own opcache to turn on performance acceleration (the default is off). For PHP versions below 5.5, APC acceleration is required, which does not indicate that the PHP APC acceleration method can be

The top command is a performance analysis tool used in linux to display the resource usage of various processes in the system in real time. It is the same as the job manager in windows. The following describes how to use it: [Root @ test etc] #

The top command is a common performance analysis tool in Linux. It can display the resource usage of various processes in the system in real time, similar to the Windows Task Manager. The following describes how to use it. Top-01:06:48 up, 1 user,

Introduction of APCThe alternative PHP cache (APC) is a free and open opcode cache for PHP. Its goal are to provide a free, open, and robust framework for caching and optimizing PHP intermediate code.APC Official website:

8 essential PHP functions and php Programmers who have developed PHP should be clear that PHP has many built-in functions and can master them to help you better develop PHP, this article will share eight essential PHP functions, all of which are

I. Introduction One of the most effective ways to familiarize yourself with Oracle's true application cluster (RAC) 10g technology is to access an actual Oracle RAC 10g cluster. There is no way to better understand their benefits than simply

PHP Opcache Acceleration This article describes how to use PHP Opcache acceleration. The details are as follows: Introduction For PHP versions later than 5.5, you can use opcache of PHP to enable performance acceleration (disabled by default ). For

Linux top commandsLinux top commands The top command is a common performance analysis tool in Linux. It can display the resource usage of various processes in the system in real time, similar to the Windows Task Manager. Top is a dynamic

Linux Top commands View multi-core CPU commands Mpstat-p all and sar-P ALL Description: sar-p all> aaa.txt redirects the output content to the aaa.txt file.   Top commands are often used to monitor linux system conditions, such as cpu and memory

I often encounter some new users who are new to Linux who will ask how much memory is occupied? In Linux, we often find that the idle memory is very small. It seems that all the memory is occupied by the system. On the surface, it seems that the

# Which user is used to start nginx before the user is followed by the groupUser www;# Number of processes that nginx is working onWorker_processes 2;# [Debug | info | notice | warn | error | crit] location of the error

Bash shell Command (2), bashshell command In the previous article 《Bash shell Command (1)This section describes several simple linux shell commands. Address:Http://www.cnblogs.com/archimedes/p/bash-shell2.html, Reprinted, please specify the source

Systemproperties class in the Android.os, but this class is hidden, the upper program development can not be used directly, with the Java reflection mechanism can be.Java code to create and modify Android properties with Systemproperties.set (name,

http://hukai.me/android-training-managing_your_app_memory/The Random Access Memory (RAM) is a valuable resource in any software development environment. This is especially true on mobile operating systems where physical memory is usually limited.

1.netstatNETSTAT-TNL | grep 443 (see if Port 443 is occupied) root user, with Netstat-pnl | grep 443 (also shows the process PID that occupies the native 443 port). -A (all) show all options, default does not show listen related-t (TCP) only show

Five, Oracle performance optimization under Linux Optimization of Oracle Database memory parameters Oracle-related system kernel parametersSGA, PGA parameter settings  Oracle down-disk storage performance Optimization file System Selection (EXT2/EXT3

A detailed description of the Linux top command parameters IntroductionThe top command is a common performance analysis tool under Linux that shows the resource usage of individual processes in the system in real time, similar to the Task Manager

First, the Linux hardwareCPU (COMPUTE, logical judgment, logic Processing), memory (CPU processes data (memory fragments) in memory), IO (read and write operations to disk over time)Block zone cache between CPU and memory (level two cache)CPU High:

IntroductionThe top command is a common performance analysis tool under Linux that shows the resource usage of individual processes in the system in real time, similar to the Task Manager for Windows.Top display system current process and other

One system monitoring1. System monitoring and Process control tools-top and free1) Mastering the function of the top command: The top command is a common performance analysis tool under Linux that shows the resource usage of each process in the