hi nic,
>It may be that servlets scale better than PHP, it looks like you're
>only throwing 20 simulataneous connections at your test bed, I work on
>a servlet based project for BT where we throw over 100 simultaneous
>conenctions at our system.
10 simulataneous connections ->servlet 220 ms, php 175 ms
20 simulataneous connections ->servlet 540 ms, php 190 ms
Is servlet really faster when I throw over 100 simultaneous conenctions?
Okay, let me change the question, how can i make servlet run faster than
php? Which vm i have to use than, I'm using the one from blackdown(1.1.7),
is the one from ibm faster? do i have to change the servlet engine like
jrun(I'm using jserv, and jswdk-ea)?
I suggested my team to use servlet, and they asked me to give them some
figures.
alvin
-----Original Message-----
From: Nic Ferrier <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED] <[EMAIL PROTECTED]>
Date: zaterdag 10 juli 1999 18:49
Subject: Re: Fw: (is servlet really faster?) Php Vs Servlet,unexpected
result,why?
>Alvin
>
>These figures don't surprise me a great deal.
>
>There are several factors at work here:
>
>*JVM performance(
>Servlets always have to contend with the performance of the JVM they
>are run on.
>
>Some of the new JVMs, eg: Htospot do make a substantial difference to
>performance.
>
>*Architecture*
>PHP remember perfoms a much more restrictive task, it is essentially
>a template processing language and not a generic tool for designing
>any kind of web based application.
>
>Some of the advantage of servlets comes from this flexibility.
>
>
>*Your test environment*
>I haven't done these kinds of test myself but similar tests were done
>by Michal Mosiewicz with Apache Jserv and Apache mod_perl and they
>showed that servlet were quicker than mod_perl.
>
>I was incredibly surprised by that but as Michal pointed out to me at
>the time use the right tool for the right job.
>
>It may be that servlets scale better than PHP, it looks like you're
>only throwing 20 simulataneous connections at your test bed, I work on
>a servlet based project for BT where we throw over 100 simultaneous
>conenctions at our system.
>
>*General performance*
>There is also the issue of per-connection creation.
>
>Admittedly this is a problem for all web tools but with Java's
>machine abstraction it helpds to have neat tricks to get out of
>things.
>
>For example, could you not create the GeorgianCalendar at init()
>rather than per connection and have some sync'ed code to update it and
>pull info out?
>
>Things like this this _might_ have a significant effect.
>
>
>Hope that helps.
>
>
>
>
>Nic Ferrier
>Tapsell-Ferrier Ltd
>www.tapsellferrier.co.uk
>
>
>>>> "Alvin, lau" <[EMAIL PROTECTED]> 7/10/99 4:33:23 PM >>>
>hi,
>
>I wrote a page with php and servlet and tried to compare their
>performance. I tried all the methods (using connection pool, even
>cache the whole page), to improve to the performance of servlet, but
>it still slower than php. I read a lot of articals about servlet, and
>they all say that servlet is faster than cgi. Can anyone tell me why?
>
>
>ps:I cannot post the source code here, exceeds 300 lines.
>check out my page for more detail.
>http://achilles.stachanov.com/~alvin/lab/phpvsservlet/
>( I put all the source code there).
>
>result (tested with suse linux 6.1, blackdown jdk1.1.7, jserv 1.0b5,
>mysql, mm jdbc driver , php3 and jmeter(random delay with gaussian
>distribution, average delay=300, dalay deviation=100.0)):
>1, just display a date:
>php->average 175 ms, servlet->average 178 ms
>
>2, Get data from mysql and format a new page:
>php->average 175 ms, servlet->average 241 ms
>(why average time of php does change?????)
>
>3, Using Connectionpool,
>servlet->average 232 ms
>servlet (Use StringBuffer first, and then
>pw.println(buffer.toString())->average 220 ms
>servlet (cache the whole page) -> servlet 185
>
>4, change the no of threads in JMeter to 20,
>php->average 190 ms, servlet->average 546 ms .....Why?????
>
>What wrong? Anyone did this type of test before? Is it the problem of
>jdk, jserv or.....? How can I improve the preformance?
>If I have to use linux, is that mean I better use php? Php is easy to
>use and runs faster.
>
>alvin
>
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