Pro PHP Application Performance Tuning PHP Web Projects for Maximum Performance phần 6 potx

... requests 1 76. 179 milliseconds Transfer rate Total number of Kbytes received per second 766 .27 [Kbytes/sec] Pro PHP Application Performance: Tuning PHP Web Projects for Maximum Performance ... in Figure 1–5.

Ngày tải lên: 12/08/2014, 23:22

... to help us grade how well a web page conforms to these rules within the next section. YSlow YSlow is a web page performance analyzing tool created by the Yahoo Performance group. The tool is ... browser applications—I know it has for me. Firebug is a plug-in widely used by web developers that provides detailed information about a web page’s DOM, CSS, JavaScript, and, most i...

Ngày tải lên: 12/08/2014, 23:23

... Listing 3 6. Listing 3 6. Optimized Code Using require < ?php require("ClassA .php& quot;); require("ClassB .php& quot;); require("ClassC .php& quot;); require("ClassD .php& quot;); ... criteria. With the tools for measuring how well your web page is performing under your belt, you also learned how to implement performance tweaks on JavaScript and images....

Ngày tải lên: 12/08/2014, 23:23

... Foundation\Apache2.2\htdocs\index .php part: 1 events: Time fl =php: internal fn =php: :count 4 1 fl =php: internal fn =php: :is_int 15 1 fl=C:\Program Files\Apache Software Foundation\Apache2.2\htdocs\index .php fn=isInt ... is a debugger and profiler tool for PHP. Along with additional debugging information, Xdebug provides developers additional information such as t...

Ngày tải lên: 12/08/2014, 23:23

... 0.9 .6. 1, and it will be used for the remainder of this chapter to demonstrate its installation process as well as measure performance improvements when using PHP. eA 0.9 .6. 1 is suitable for PHP ... 4–5. Listing 4–12. php. ini eA Settings for Windows [PHP_ eA] zend_extension_ts="C:\Program Files \PHP\ ext\eAccelerator0 961 _5.3.3_ts.dll" eaccelerator.shm_size=&q...

Ngày tải lên: 12/08/2014, 23:23

... Table 6 2. Web Server Types Web Server Type Description Prefork Process-based web server; for each incoming request, a forked process is used to satisfy the request. Threaded Thread-based web ... “Apache Multi-processing Modules” ahead). A prefork web server allows the web server to create a separate process (fork) based off an original process. Web servers that operate...

Ngày tải lên: 12/08/2014, 23:23

... /news .php 1,500 25 /blog .php 1,000 17 /video .php 60 0 10 /topuser .php 400 6 /message .php 150 2 /message_send .php 100 2 /message_read .php 90 2 /user_profile .php 80 2 /feedback .php 15 1 ... 3.3MB /news .php 1,500 25 15MB 3.75MB /blog .php 1,000 17 16MB 2.72MB /video .php 60 0 10 8MB 0.8MB /topuser .php 400 6 17MB 1.02MB /message .php 150 2 9MB 0.18MB...

Ngày tải lên: 12/08/2014, 23:23

... for the default file in the order they are specified in the directive. Make sure that the most relevant name for your particular application is placed first in this list. For example, for a PHP ... footprint. We have used that information to limit the processes on our system to prevent disk swapping. We have also examined some configuration file tweaks that can improve performa...

Ngày tải lên: 12/08/2014, 23:23

... the PHP engine we finished installing. Toward the end of the file, type in this text: AddType application/ x-httpd -php .php PHPIniDir "C: /PHP/ " LoadModule php5 _module "C: /PHP/ php5apache2_2.dll" ... learned a process for analyzing them and making corrections. Throughout this book, we have shown you how to diagnose performance problems at each level of...

Ngày tải lên: 12/08/2014, 23:23

... 22 coding best practices for accessing array elements, 63 64 for accessing object properties, 67 68 calculating loop length in advance, 60 62 for fetching data from files, 64 67 function calls, 57 ... 133–134 Welcome web page, 215 ApacheTop installing, 166 memory footprint, 168 –170 output, 166 top URLS by requests, 167 – 168 APC. See Alternative PHP Cache application s...

Ngày tải lên: 12/08/2014, 23:23