used memory

1, memcached   High-performance distributed memory object cache System 2, the purpose: to reduce the database load, improve the response speed of the dynamic database-driven Web site 3, data format: Text line 4, protocol: Memcache protocol 5,

Free Total used free shared buffers cachedmem: 1920472 1845892 74580 462708 338068-/+ buffers/cache: 1045116 875356Swap: 0 0 0[Email protected]

1, Htop2. TopContent Explanation: PID: ID of the processUSER: Process OwnerPR: The priority level of the process, the smaller the higher the priority is executedNinice: ValueVIRT: Virtual memory consumed by the processRES: The physical

Day07Access to single-user mode delete password does not enter system problem:Selinux=disabledOperating system Linux boot processPower-upBiosFind Boot MediaFirst sector (MBR) Read firstGrupFind kernel loaded into memoryExecute a program initTopThe

　　Garbage collection algorithm Tag-Purge algorithm The most basic algorithm is the tag-purge (mark-sweep) algorithm. There are two stages of marking and purging: first marking out all objects that need to be recycled, and then

Recently in the study of the production of Excel table, by the way, by combining the previous learning content, using Python's two templates, is to obtain system information Psutil, and generate Excel table Xlsxwriter. Using these two templates will

This article is based on Zhou Zhiming's "in-depth understanding of Java virtual machines"Garbage collection algorithm A major feature of the Java language is the ability to automate garbage collection without the developer focusing too much on

Sqlite3 Create a Connection object to represent a db with the following code: Import Sqlite3conn = Sqlite3.connect (' example.db ') #如果要在RAM中创建一个db, DB name used: Memory: When more than one

One, mark-clear algorithm1) Mark-Clear algorithmThe most basic collection algorithm is the "mark-clear" (mark-sweep) algorithm, like its name, the algorithm is divided into "mark" and "clear" two stages: first mark out all the objects that need to

Spring boot also encapsulates the NoSQL database by automating the usual database support.About RedisRedis is the most widely used memory data store in the industry today. Supports a richer data structure than memcached,redis, such as hashes, lists,

1. Garbage collection algorithm　　The implementation of garbage collection algorithm involves a lot of program details, and the methods of virtual machine operating memory of each platform are different, and the idea and development process of

A friend asked me the other day why my Linux system didn't run many programs and showed so little available memory. In fact, Linux and win memory management is different, will try to cache memory to improve read and write performance, usually called

Dynamic application, which is relative to the static content of the website, refers to the network application software developed in the server-side language of C/s, PHP, Java, Perl,. NET, such as forum, network album, Friends, blog and other common

The Java platform's garbage collection mechanism significantly improves the efficiency of developers, but a poorly implemented garbage collector can consume an application's resources too much. In the third part of the Java Virtual Machine

The platform of large dynamic application system is mainly aimed at the low-level system architecture of large traffic and high concurrent web. The operation of large web site needs a reliable, safe, scalable, easy to maintain application system

Article Description: product designer, "back to top" or else? Domestic product designer/ui designers in the design of a slightly longer page, often add a "back to the Top" button, in the form of a fixed at the bottom of the bottom, there

This is what I share on the MDCC (slightly changes), but also the source analysis of the first release of the source analysis introduced in the following will slowly do. Comparing several picture caches from the overall design and principle, it is

Android Common picture-loading framework Picture loading involves the caching of pictures, the processing of pictures, the display of pictures and so on. And with the mobile phone equipment on the market, the rapid development of hardware, the

A company's web site program after a long run, slow speed, restart the site after the speed significantly faster, estimated that the Web site program occupied by the memory and CPU resources can not be released in time, only need to restart the site

Here are some of the problems with the server phenomenon of some people 1, Server window2000 ADV server CPU 4G memory 2GMy company is responsible for the maintenance of ASP programs often stop responding, the specific phenomenon is that the server