Thank you for your comments. So that we have a page to compare between PHP4 and PHP5, I have taken the home page of php.net. I have a local copy – 'php.local' and re-ran the tests on the first page (ab running on 'php.local')
ab http://php.loca/ -n1000 -c10 Again, the results are alarming - PHP5 seems to be about 50% slower :-( Below are the results. >> Results with PHP5 module loaded << <snip> Concurrency Level: 10 Time taken for tests: 113.320 seconds Complete requests: 1000 Failed requests: 0 Broken pipe errors: 0 Total transferred: 26031972 bytes HTML transferred: 25689608 bytes Requests per second: 8.82 [#/sec] (mean) Time per request: 1133.20 [ms] (mean) Time per request: 113.32 [ms] (mean, across all concurrent requests) Transfer rate: 229.72 [Kbytes/sec] received <snip> >> Results with PHP4 module loaded << <snip> Document Path: / Document Length: 25651 bytes Concurrency Level: 10 Time taken for tests: 64.971 seconds Complete requests: 1000 Failed requests: 0 Broken pipe errors: 0 Total transferred: 26056665 bytes HTML transferred: 25710578 bytes Requests per second: 15.39 [#/sec] (mean) Time per request: 649.71 [ms] (mean) Time per request: 64.97 [ms] (mean, across all concurrent requests) Transfer rate: 401.05 [Kbytes/sec] received <snip> --- Raditha Dissanayake <[EMAIL PROTECTED]> wrote: > Hi, > > I am a guy who doesn't believe in 'requests per > second' and 'number of > concurrent users' stats so please ignore the rest of > this message if you > wish: > > The problem here could be that while it's possible > to improve the speed > of execution it's not possible to do so for the full > set of functions or > features available in a particular language. There > will be areas where > there is huge boost in speed and there may be areas > where there is slow > down and it's quite possible that you have hit one > of them. > > Secondly it's quite possible that the optimization > techniques used with > one version may be counter productive with another > version. > If you better describe the functionality of your > pages i think you will > be more likely to recieve a better answer (from me > or someone better > qualified). > > best regards. > > > > Andrew Lee Paul wrote: > > >Hello all > > > >I have recently installed PHP 5.0 Beta 4 on my > >development server and am very concerned with > >performance. I have read everywhere, that PHP5 > offers > >increased performance. However, in my tests, the > >requests per second have decreased dramatically: > > > >PHP5: Requests per second: 4.23 [#/sec] (mean) > >PHP4: Requests per second: 23.08 [#/sec] (mean) > > > >Full test results are below. > > > >The environment and the requested page are > identical > >in both tests (using ab). The tests were run on > >Apache/1.3.28. > > > >Has anyone else experienced similar behavior? Or > can > >anyone suggest what is happening... > > > >Thank you in advance. > > > >Andrew > > > > > > > > > > > > > >>>Results with PHP5 module loaded << > >>> > >>> > > > ><snip> > > > >Concurrency Level: 10 > >Time taken for tests: 236.372 seconds > >Complete requests: 1000 > >Failed requests: 0 > >Broken pipe errors: 0 > >Total transferred: 12732000 bytes > >HTML transferred: 12514000 bytes > >Requests per second: 4.23 [#/sec] (mean) > >Time per request: 2363.72 [ms] (mean) > >Time per request: 236.37 [ms] (mean, across > all > >concurrent requests) > >Transfer rate: 53.86 [Kbytes/sec] received > > > ><snip> > > > > > > > > > > > >>>Results with PHP4 module loaded << > >>> > >>> > > > ><snip> > > > >Concurrency Level: 10 > >Time taken for tests: 43.328 seconds > >Complete requests: 1000 > >Failed requests: 0 > >Broken pipe errors: 0 > >Total transferred: 12728000 bytes > >HTML transferred: 12514000 bytes > >Requests per second: 23.08 [#/sec] (mean) > >Time per request: 433.28 [ms] (mean) > >Time per request: 43.33 [ms] (mean, across > all > >concurrent requests) > >Transfer rate: 293.76 [Kbytes/sec] > received > > > ><snip> > > > > > > > >__________________________________ > >Do you Yahoo!? > >Yahoo! Mail SpamGuard - Read only the mail you > want. > >http://antispam.yahoo.com/tools > > > > > > > > > -- > Raditha Dissanayake. > ------------------------------------------------------------------------ > http://www.radinks.com/sftp/ | > http://www.raditha.com/megaupload > Lean and mean Secure FTP applet with | Mega Upload - > PHP file uploader > Graphical User Inteface. Just 150 KB | with progress > bar. > __________________________________ Do you Yahoo!? Yahoo! Mail SpamGuard - Read only the mail you want. http://antispam.yahoo.com/tools -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
