how to make dsl faster

This article mainly introduces a way to make file downloads faster in PHP, that is, using the X-SendFile header, which is supported by servers with active traffic, in general, we can direct the URL to a file under the Document Root to guide users to download the file. However, in this way, we can't do some statistics, permission checks, and so on. so, in many cases, we use PHP for forwarding to provide use

Article Title: use keyboard shortcuts to make Ubuntu faster. 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. When you start the terminal, do you still need to click Application> attachment => terminal? When you started EVA, were you still looking for it honestly ?......

9:18 2015/12/9Chrome shortcuts to make development faster:Part:Hold down the Ctrl key and click the link to open the link from the background in the new tab, but you still stay in theOn the Front tabPress and hold the Ctrl+shift key, then click the link to open the link in the new tab and switch to the newOpen tabsHold down the Shift key and click the link to open the link in a new windowAlt+f4 Close the current windowCtrl+shift+t reopen the last clos

Performance? We are back to this eternal topic. Yep, most programmers are persistently pursuing performance. A country prefers "more fast, better Province", and "more" and "Province". However, it is our greatest pleasure to make our programs run fast and better. To do the same thing, others' programs need to run for 1 minute, while their own programs only need a few seconds, this is a cool thing (you beat 99% of programmers across the country ......)!

A straight break? This is the browser is not stable enough, now let us pass a few simple settings to make your Firefox browser faster and more stable bar! 1. Turn on automatic upgrades to keep your Firefox updated in time In the Firefox tool-> option-> advanced, to provide users with the Firefox browser update service settings, here is recommended to use automatic installation updates, the first time with

rate set too high the "illusion". Usually 15, 17 inches of color will set the refresh rate to more than 75Hz on the line (if the bandwidth is enough of course can be higher), there is no need to force too high. Resolution is also the same reason, usually set to 800x600 or 1024x768 on the line, as long as the good enough, there is absolutely no need to play what "ultimate" and "ashes." This is much more than the speed-increasing effect of overclocking the graphics card. 　　Conclusion All in all,

How to make the server access speed faster-Linux Enterprise Application-Linux server application information, the following is a detailed description. I had a server in the school and used Lenovo's desktop business computer. The configuration was okay. What about RMB? I signed a dial-up Internet access for the school and added a TP route. More than a dozen people shared it, I used port ing to map port 80 to

= 65535 This value must be changed to the default is too small to change the log will have an error but the same as the number of global files to view the ULIMIT-N system global SettingsRlimit_core = 0------------------------------------------------------------------------------------------------- ----------[global]pid =/usr/local/php/var/run/php-fpm.piderror_log =/home/wwwlogs/php-fpm.loglog_level = Noticerlimit_files = 65535rlimit_core = 0 [www]listen =/tmp/php-cgi.sockuser = Nobodygroup = NO

details, you must use the sa role to execute dbcc (3604,310,302 ). 3. where clause that cannot be optimized 1. for example, the columns in the following SQL condition statements have an appropriate index, but the execution speed is very slow: Select * from record where Substring (card_no, 5378) = '000000' (13 seconds) Select * from record where Amount/30 Select * from record where Convert (char (10), date, 112) = '000000' (10 seconds) Analysis: Any operation results on the column in The where

Article title: a good way to make CentOS system yum source faster. 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. Method 1: When a slow command ctrl + c ends, yum supports breakpoint, so it will automatically switch to the next source Tip: press ctrl + c twice in a r

disk fragmentation, so once the files or partitions used to implement the virtual memory are too fragmented, the drive's seek time is extended, affecting system performance. There is a misconception that Windows systems frequently read and write Pagefile.sys will produce disk fragmentation, but in reality. Because once the Pagefile.sys file is created, the distribution in the partition continues to be fixed, and the file's internal read and write does not increase or decrease the Pagefile.sys f

appropriate index, but the execution speed is very slow:Select * from record whereSubstring (card_no, 5378) = '000000' (13 seconds)Select * from record whereAmount/30 Select * from record whereConvert (char (10), date, 112) = '000000' (10 seconds)---- Analysis:---- Any column operation results in the where clause are calculated by column during SQL Execution, so it hasThe index on the column is not used for table search. If these results are obtained during query compilationIt can be optimized

appropriate index, but the execution speed is very slow:Select * from record whereSubstring (card_no, 5378) = '000000' (13 seconds)Select * from record whereAmount/30 Select * from record whereConvert (char (10), date, 112) = '000000' (10 seconds)---- Analysis:---- Any column operation results in the where clause are calculated by column during SQL Execution, so it hasThe index on the column is not used for table search. If these results are obtained during query compilationIt can be optimized

example, the columns in the following SQL condition statements have an appropriate index, but the execution speed is very slow: Select * from record where Substring (card_no, 5378) = '000000' (13 seconds) Select * from record where Amount/30 Select * from record where Convert (char (10), date, 112) = '000000' (10 seconds) ---- Analysis: ---- Any column operation results in the where clause are calculated by column during SQL Execution, so it has The index on the column is not used for table sea

the column;If these results are obtained during query compilation, they can be optimized by the SQL optimizer and indexed to avoid table search. Therefore, rewrite the SQL statement as follows:Select * from record where card_no like '000000' (Select * from record where amount Select * from record where date = '2014/1/01' (You will find that SQL is getting faster!2. For example, the stuff table has 200000 rows and the id_no table has non-clustered ind

Seda wrote n complex sandstorm, the idea of Seda itself is very simple. Using jdk1.5 to provide us with good thread support, it is a hundred lines. Code To implement a Seda model. 3. Stax Use Stax instead of Dom or sax. Streaming XML parsing consumes less memory and is faster. Dom is very memory-consuming and cannot be considered in terms of performance. Sax is very huge and cool. It is slower than pull-type stream parser. Stax is the product of

are calculated by column one by one during SQL Execution. Therefore, it has to perform table search without using the index on the column; if these results are obtained during query compilation, they can be optimized by the SQL optimizer and indexed to avoid table search. Therefore, rewrite the SQL statement as follows: Select * from record where card_no like '123' ( Select * from record where amount Select * from record where date = '2014/1/01' ( You will find that SQL is getting

Want to make your site visit faster? Google can help you do it, and it's free. Google has just launched a free page Speed service, which not only allows you to use Google's proxy server, but also helps you optimize your site's code. You simply point the DNS of the site to Google's DNS, and the service automatically crawls your pages, optimizes them according to best practices, and provides Web access to th

How do I make the aero Peek function in Win7 computer run faster? Win7 system 1. Press Win+r at the same time, and then enter regedit in the Run window and click Enter, so you can open the Registry Editor window. Win7 system 2. Expand hkey_current_usersoftwaremicrosoftwindowscurrentversionexploreradvanced in the window on the left side of the Registry Editor, and then Right-Create a new DW

Shared access is actually an ongoing operation on a local area network, and do not assume that such an operation is trivial, because access to shared resources in different operating systems is not necessarily the same as the shared access cheats you need to use; This is not when we try to access Windows Server 2008 shared resources in the system, the discovery of shared access is significantly less rapid than before, we must use the following cheats to set up the Windows Server 2008 system, in