Consumers familiar with the hardware may know that in many DIY hardware, the speed of hard disk performance in the system performance has a greater impact. Among them, the size of disk disc and the speed of seek time is the most important impact on the performance of hard disk, but the introduction of SSD has been the hard drive of the various parameters of the "brain behind." SSD due to the use of flash memory particles as storage medium, no mechanical components, so do not consider the single
搭建本地服务器环境的软件有很多,比如什么PHPNOW、Almp、XAMPP等等好多;Previously shared a "site local build php+mysql Environment Run Web site Tutorial" with is Phpnow;Share today is usbwebserver, the name of the USB indicates that it is a portable environment package, you can freely migrate;This is I used the most convenient and simplest local apache+php+mysql environment building program, decompression can be used without installation;Put it on a USB flash drive, or use the Net Disk tool to synchronize folders, so that i
Yum has a problem with the install today and found a way to find a workable solution.Fastestmirror is an accelerator plugin for Yum, here is the plugin tip message is that the plugin is not available.Can not use the first do not use Bai, disabled off, first Yum and then again.1. Modify the plugin's configuration file# vi/etc/yum/pluginconf.d/fastestmirror.confEnabled = 1//changed from 1 to 0, disable the plugin...............................2. Modify the Yum configuration file# vi/etc/yum.conf..
As we all know, MySQL paging writes:SELECT * from ' yourtable ' limit start,rowsNow I have 9969W data in a table in my database. It's called Tweet_data.Select COUNT (*) from Tweet_data Run the first SQL statement, look at the beginning of the 6 million article 10, to see the query timewatermark/2/text/ahr0cdovl2jsb2cuy3nkbi5uzxqvytgznze5oty4nq==/font/5a6l5l2t/fontsize/400/fill/i0jbqkfcma==/ Dissolve/70/gravity/southeast ">60s how slow this must be!Solution One,someone immediately thought of usin
The fastest way to calculate the file size, output amp; apos; B amp; apos;, amp; apos; KB amp; apos ;, amp; apos; MB amp;
So far, it may be the fastest calculation method.Is it faster?
Date_default_timezone_set ('utc ');
Function format_bytes ($ size)
{
$ Arr = array ('B', 'KB', 'mb', 'GB', 'TB ');
For ($ f = 0; $ size >=1024 $ f
ZeroMQ, the fastest message queue in history-ZMQ learning and research ZeroMQ, and the fastest message queue in history-ZMQ learning and research
I. Background of ZeroMQ
Reference the official saying: "ZMQ (ZMQ for short) is a simple and easy-to-use transmission layer, a socket library like a framework, it makes Socket programming simpler, more concise, and more efficient. Is a message processing queue lib
algorithm explained, I think the more simple and easy to understand the better, the real bucket sort of stay in the future to talk about it. One thing to note is that the simplified bucket sorting algorithm We are currently learning is not really a sort algorithm in the real sense. Why is it? For example, there is no point in encountering the following example.Now there are 5 individual names and scores: Huhu 5, haha 3, Xixi 5, Hengheng 2 and Gaoshou 8. Please follow the scores from high to low
After my M bandwidth test, as long as it is a user of China Southern Telecom, the following sources are the fastest. I usually update them with 2048kB/s # debcdrom: [Ubuntu8.10 _ IntrepidIbex _-Releaseamd64 (20081029.2)]/intrepidmainrestricted # Seehttp: // help.ubuntu.com/community/UpgradeNot
After my M bandwidth test, as long as it is a user of China Southern Telecom, the following sources are the fastest
This forum article (CCID technical community) explains in detail the fastest way to import SQLServer massive data. For more information, see the following
This forum article (CCID technical community) explains in detail the fastest way to import SQL Server massive data. For more information, see the following
Recently, I analyzed the database of a project. to import a large amount of data, I want to impor
(1) Read and write the best or not multi-threading, hard disk read and write speed is limited, single-threaded full load, multithreading will increase the switching between threads, will increase the time.If you want to increase read and write speed, you should increase the hard disk, do raid(2) The first is the hard disk write is serial, CPU calculation is parallel, if you focus on computing so many threads can improve, not called parallel computing it;If you focus on storage, unless the amount
Obtain the length and width of all images on the webpage at the fastest speed. I wonder if you have ever played nbsp; pinterest.com nbsp ;? After registration, it has a nbsp; add nbsp; a nbsp; pin, nbsp; when you submit a website URL and press Find nbsp; Images, it can be used to search for all the images on the submitted webpage (screening by the length and width conditions). The entire process is generally about 10 seconds. Obtain the length
Original address: http://forum.ubuntu.org.cn/viewtopic.php?t=165069RTorrent is the fastest bt download software, due to support DHT network, can be good for the Thunder and BitComet users to share resources, so it is suitable for the domestic network environment, download speed extremely fast.First, install rtorrent from the source.Code:$sudo Aptitude Install RTorrentThen build the download directory and download the history directoryCode:$mkdir Unive
There is a 5,000 or so keyword library, how the fastest match out of an article (about 800 words) on the keywords
Reply content:
There is a 5,000 or so keyword library, how the fastest match out of an article (about 800 words) on the keywords
Create a hash table with keywords, and then find out whether the words in the article are in it.
Knot ... Knot ... BA, stuttering Chinese participle
Buil
Php+mysql what is the fastest way to update millions data?
Reply content:
Php+mysql what is the fastest way to update millions data?
InnoDB
Read Detach
Chaizi section to make redundant table
Cache to do merge updates
Let's split the table.
For this kind of brain-free questioning, I really did. Dare to write clearly what is the situation? After you have identified the situation, you
Article title: Linux Foundation: Linux is the fastest growing platform. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source.
Jim Zemlin, executive director of the Linux Foundation, said Linux applications have grown two to three times faster than other platforms. As enterprises integrate their technical infrastructure
Article title: the fastest computer in the world is Linux. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source.
Every six months, Top 500 organization will publish their specific Top 500 rankings. from the most recently released supercomputer Top rankings, the fastest speed
Yesterday, I completely abandoned the operating system of Windows 7. 7, which was half a year old and switched to Ubuntu. After ubuntu is installed, apt software packages and system update are inevitable, and the download speed is slow, so the source is modified, the following is a source with the fastest speed I feel. The download speed is mainly kb/s ~ Kb/s. I feel very good. I keep a file and it may be used later.
# Netease Ubuntu 11.04 source deb
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