Oh my. That explains alot.
Nothing against the apache stuff, it's fine, but it's also a rather bit
slower than most other options, due to it's architechure - calls go
through an intermediate layer.
Blackdown is also pretty much the slowest JRE out there, bar none.
Yes, you should experience exceptional performance improvements by going
to the IBM JVM, and some other servlet runner - even the JSDK
servletrunner.
Jim
"Alvin, lau" wrote:
>
> 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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