Thanks a lot , But i understood from you that the concurrent users is
depends on app server , memory , jdk etc etc I read some EJB benefits ,EJB
is giving more loadbalancing failover and i have an idea that if i use EJB ,
i would propabily get good amount of concurrent users with loadbalancing etc
.
1.My doubt is does this concurrent user criteria depands on the framework
EJB or not?
2. can we get the same concurrent users +loadbalancing with servlet + java
API environment ?
3. If concurrent users depends on Application server then why EJB tells
about this.
Please clear me.
Thanks
Asha
-----Original Message-----
From: Emmanuel Pirsch [mailto:[EMAIL PROTECTED]]
Sent: Monday, February 07, 2000 7:31 PM
To: [EMAIL PROTECTED]
Subject: Re: Concurrent Users
Asha Balasubramanyan wrote:
>
> Hi All:
> Usually what is the maximium concurrent users we can get using
EJB.
> I know that this depends on the type of the project. If for a Banking
> project / missing critical project , what is maximium no of concurrent
user
> we can achieve. Can anybody give me a rough idea on this.
> Thanks
> Asha
It depend on a number of factor :
- Which Application server you are using
- The operating system your app server is running on
- The JDK you are using
- The memory on the server
- The number of instance of the app server (cluster) on one or several
machine
- etc.
Usualy, you can get between 2000 and 4000 connection on a JVM. Your app
server will probably use a certain amount of thread to respond to
incoming request. If the number of request is greater that the number of
threads the server as allocated, then the request will be queued (if the
queue gets to long some request will be dropped). To get a lot of
simultanious connection on the same machine, you will need to run a
cluster of app server on that machine. So you will have many JVM that
will be able to handle (depenig on how your configure your app server)
2000-4000 connection at the same time.
You must keep in mind that the length of each connection will affect the
real load on the server.
Ultimatly you must have enough CPU power on the server so it can handle
that many thread without spending most of it's time doing context
swiching.
--
Emmanuel Pirsch
Sun Certified Java Programmer
Unite for Java! - http://www.javalobby.org/
---
"The intuitive mind is a sacred gift and the rational mind is a faithful
servant. We have created a society that honors the servant and has
forgotten the gift."
- Albert Einstein.
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