Thanks to All, I have done all the stuff to make my web app thread safe,
It seems its fine for the moment.Except for a few more things.
It seems threading is realy complex. I am forking out a new thread in my
Handle request method and this is making the other request to wait for
the other thread
Hello,
If I use threads, through the Thread class, how can I can finish them
whenever Tomcat reloads the application that created them.
Thanks.
Regards.
Daniel Molina Wegener
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
Fo
Hi,
Anybody knows if it's posible encrease the number of threads with TOMCAT
3.2. I'm doing some performance testing and when I try to execute more that
100 request simultaneously I get the the error ...
2001-06-27 03:01:18 - ThreadPool: Pool exhausted with 100 threads.
It's posible def
Hi,
I'm trying to understand how exactly Tomcat 5 is organized to work with
threads. Is there any documentation on how the connector is using the
threads? What happens in the thread pool, how exactly the are threads picked
from the pool and what is their state? And what happens with the released
t
l would be in one place, and I would use DB connection
pooling provided
by Tomcat.
I like 2. because I understand it is bad to open new threads in Tomcat.
I like 3 because I avoid having threads in Tomcat, but can get to DB thru
classes that are already in my Tomcat JVM via RMI. I do not like
Hello all,
I'm a newbie in mailing user list. My post is relationship with threads in
Tomcat Server 5.0. Over Debian Linux v3.0 rc 2, threads are shown like
processes; many processes are shown in process list command (ps -aux). We
think that most of them, except one or two are threads
bject: threads in tomcat
Hello,
If I use threads, through the Thread class, how can I can finish them
whenever Tomcat reloads the application that created them.
Thanks.
Regards.
Daniel Molina Wegener
-
To unsubscribe, e-mail: [
From: "Daniel Molina (Inter-Media)" <[EMAIL PROTECTED]>
> If I use threads, through the Thread class, how can I can finish them
>whenever Tomcat reloads the application that created them.
You can use a ServletContextListener which will be notified when the webapp
starts and stops. Implement
Hi All,
I am using JSF framework for my project. I don't know if Tomcat is restcting
me or JSF framework is restricting me.
But I am unable to create and execute threads either in my JSF pages or my
managed beans.
I have created and exected threads successfully in this
http://www.mystudentapa
Hi All,
I am using JSF framework for my project. I don't know if Tomcat is restcting
me or JSF framework is restricting me.
But I am unable to create and execute threads either in my JSF pages or my
managed beans.
I have created and exected threads successfully in this
http://www.mystudentapa
ch is of
course available.
Yoav Shapira
Millennium Research Informatics
>-Original Message-
>From: Angelov, Rossen [mailto:[EMAIL PROTECTED]
>Sent: Thursday, April 01, 2004 11:27 AM
>To: 'Tomcat Users List'
>Subject: Threads in Tomcat 5
>
>Hi,
>
>I'
why do you want to use a thread to manage authentication? given the requestProcessor
threads are reused, it makes no sense to use the thread for the mapping.
you're better off just authenticating the first time and setting the HttpSession,
rather than look up the thread. I'm probably missing
ginally created 2-3 years ago to work on iPlanet
and now I'm trying move them to Tomcat but it looks like there will be lot
of problems.
Ross
-Original Message-
From: Peter Lin [mailto:[EMAIL PROTECTED]
Sent: Thursday, April 01, 2004 11:21 AM
To: Tomcat Users List
Subject: Re:
nd now I'm trying move them to Tomcat but it looks like there will be lot
of problems.
Ross
-Original Message-
From: Peter Lin [mailto:[EMAIL PROTECTED]
Sent: Thursday, April 01, 2004 11:21 AM
To: Tomcat Users List
Subject: Re: Threads in Tomcat 5
why do you want to us
Peter Lin [mailto:[EMAIL PROTECTED]
Sent: Thursday, April 01, 2004 11:21 AM
To: Tomcat Users List
Subject: Re: Threads in Tomcat 5
why do you want to use a thread to manage authentication? given the
requestProcessor threads are reused, it makes no sense to use the thread for
the mapping.
you're
ally pages) based on the
product and the policy information. Each http session is related to an
eRights session.
Ross
-Original Message-
From: Peter Lin [mailto:[EMAIL PROTECTED]
Sent: Thursday, April 01, 2004 12:26 PM
To: Tomcat Users List
Subject: RE: Threads in Tomcat 5
hit sen
resources (usually pages) based on the
product and the policy information. Each http session is related to an
eRights session.
Ross
-Original Message-
From: Peter Lin [mailto:[EMAIL PROTECTED]
Sent: Thursday, April 01, 2004 12:26 PM
To: Tomcat Users List
Subject: RE: Threads in Tomcat 5
ilto:[EMAIL PROTECTED]
> Sent: Thursday, April 01, 2004 6:27 PM
> To: 'Tomcat Users List'
> Subject: Threads in Tomcat 5
>
>
> Hi,
>
> I'm trying to understand how exactly Tomcat 5 is organized to
> work with
> threads. Is there any documentation on h
hru
>RMI.
>
>I like 1. because all would be in one place, and I would use DB
connection
>pooling provided
>by Tomcat.
It's also good because you will be able to easily monitor and manage the
DB threads via a web interface if you'd like.
>I like 2. because I underst
Hi
> Are there any solution about limit the process or threads count?. Remember
that Tomcat "server.xml" parameters don`t work.
For me, these settings work.
However, remember what they describe. They set the numbers of workers, not
total threads. You applicaton might spawn threads, tomcat might s
Hi,
I need to send a mail automatically at 10 minutes interval. how can i do
this? how can i activate threads in tomcat?
regards
Prince
- Original Message -
From: "Bill Barker" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Saturday, November 01, 2003 1:00 PM
Hi,
When we ran a stress test on our application, it hang Tomcat service. We found an INFO
message in stderr a message below
INFO: All threads are busy, waiting. Please increase maxThreads or check the servlet
status200 200
I have tried to increase the maxProcessors in \conf\server.xml from 20
ubject: HOW CAN I USE THREADS IN TOMCAT
> Hi,
> I need to send a mail automatically at 10 minutes interval. how can i do
> this? how can i activate threads in tomcat?
> regards
> Prince
>
> - Original Message -
> From: "Bill Barker" <[EMAIL PROTECTED]&g
rince" <[EMAIL PROTECTED]>
To: "Tomcat Users List" <[EMAIL PROTECTED]>
Sent: Saturday, November 01, 2003 8:51 AM
Subject: HOW CAN I USE THREADS IN TOMCAT
Hi,
I need to send a mail automatically at 10 minutes interval. how can i do
this? how can i activate threads in tomca
utnil the Web app
shuts down.
Just a thought!
-Fred Whipple
iMagine Internet Services
> -Original Message-
> From: Erik Wright [mailto:[EMAIL PROTECTED]
> Sent: Saturday, November 01, 2003 11:03 AM
> To: Tomcat Users List
> Subject: Re: HOW CAN I USE THREADS IN
Hello, Prince!
You wrote to "Tomcat Users List" <[EMAIL PROTECTED]> on Sat, 1 Nov 2003 13:21:42 +0530:
P> Hi,
P> I need to send a mail automatically at 10 minutes interval. how can
P> i do this? how can i activate threads in tomcat?
Tomcat is a Java application, t
I need to send a mail automatically at 10 minutes interval. how
can
P> i do this? how can i activate threads in tomcat?
Tomcat is a Java application, there are no difference of using threads
with Tomcat or without it.
Simply expand Thread class, and run your thread.
But don't forget
Howdy,
>I have an instance of MyMailScheduler - mmsched in a ContextListener
>class for my webapp. mmsched spawns threads to do some work regarding
>sending emails. In my contextDestroy method I do : mmsched = null;
mmsched should have a close()/stop()/shutdown() method which stops its
threads.
Hi,
The problem is that stop / suspend are deprecated. The destroy() method
has yet not been implemented ? What does one do then?
I have a solution -
Keep a reference to the instances of the threads spawned in a
hashtable. In contextDestroy make all these references null . Will this
solution
I've mainly worked in BEA WebLogic before and from
colleagues and other sources I have heard it is not
recommended (and sometimes not allowed, some even
said) to create threads in your application. Indeed,
when the application went live in a multi-server
clustered environment, we got very inconsist
You can create threads all day in tomcat, but here are the importnatn things
to consider:
- WHY! Are threads really the correct solution?
- If you create threads - what are their scope? Daemon, non-daemon?
- If you create non-daemon threads - be prepared for the consequences such as
the JVM not g
Well, that was part of my question if I
cannot/don't implement daemon threads to do e.g.
automatic daily tasks, what else? E.g, at the end of
the day send an e-mail to a (real life) manager with a
summary of the day's transactions something like
that.
Does Tomcat provide some sort of Actio
Hello Riaan, you might want to check out jcrontab.
http://jcrontab.sourceforge.net
Riaan Oberholzer wrote:
Well, that was part of my question if I
cannot/don't implement daemon threads to do e.g.
automatic daily tasks, what else? E.g, at the end of
the day send an e-mail to a (real life) man
Tomcat doesn't provide this but other simple solutions exist such as exposing
a URL and using cron + wget. (Some may also say kludge too)
As for aggregating statistics - I would recommend using a log file to record
the essential measurements then running your stats program on the logs. This
way
... nice suggestion, but I am delivering an
application as a .war file to a 3rd party and they
just want the .war (+ context.xml) with everything in
it hence, no other applications checking the logs
or database. All functionality must come from the .war
running in Tomcat. It is very important:
cron = scheduler
wget = command line HTTP/HTTPS client
The requirement for delivering everything in a WAR file is all nice and
dandy, but if you think about it, the requirement automatically breaks
the other requirement: scheduling.
If you cannot have a log file, and you cannot access a databa
Perhaps I should give a better explanation of how the
application works:
I deliver a .war file. I do have access to an
underlying database. The scheduled tasks perform more
on a "is time reached" than "has time elapsed"
principle... eg, it triggers when "is it past
midnight?" instead of "has 24 ho
Nobody, from what I can tell, is saying "can't". You did ask, though.
If you're willing to be diligent about coding your threads, go for it.
I think the point of previous posts was that in many cases, there is no
need for such a thing as your asking. There are always exceptions to
the rule, t
You're right, no-one said I can't. :) I was hoping
someone who has actually used it could give some
feedback about it.
The (obvious) reason why the scheduled task also
cannot be active if the web-app is not active, is that
the scheduled task requires users to use web-app. Eg,
Friday at 15:00 you g
Howdy,
>I cannot see why creating a daemon thread cannot cater
>for this. You just start the thread in the init method
>of the InitServlet (or any servlet you create with
>start-when-app-starts).
I'm actually a fan of the background daemon-thread approach, and think
the user-threading limitation
Yep, thanks... I've heard from other sources as well
that the "ServletContextListener" approach is better.
It gives me some comfort knowing other people find the
approach safe and without too many pitfalls. :)
--- "Shapira, Yoav" <[EMAIL PROTECTED]> wrote:
>
> Howdy,
>
> >I cannot see why crea
> From: Tim Funk
> Subject: Re: [Q] Is it safe to create threads in Tomcat web-apps?
> You can create threads all day in tomcat, but here are the importnatn things
> to consider:
> - WHY! Are threads really the correct solution?
> - And last but not least: WHY! Are threads
I am in total agreement and I have used user created threads on my site. I
view user created threads as a "dangerous" and usually un-needed thing.
Dangerous because of the side effects that aren't accounted for by more
junior programmers such as concurrency, shutting down the JVM (or lack of
b
pread on a program to make it
"better".
That being said. Tim did not say "don't" he asked "why". That's
much politer than I've normally been to people in a similar
circumstance.
G. Wade
[EMAIL PROTECTED] wrote:
>
> > From: Tim Funk
> >
jcrontab works ok, it is modeled after the unix crontab entries.
Best bet is to try it and see if it meets ones needs :)
Anton Tagunov wrote:
So, what John is speaking about - spending
less effort on thread coding and using an
existing solution (native Unix crontab)
may also be pushing you to usin
This looks promising, but what do they do differently
than just starting a deamon thread and doing some
background work?
Why bother with this if you can start your own custom
thread, or do they do something else?
--- Kwok Peng Tuck <[EMAIL PROTECTED]> wrote:
> Hello Riaan, you might want to che
Hello Riaan!
RO> (I have no idea what cron +wegt is???)
As John has explained
JT> cron = scheduler
Unix world I would add to this :-)
And on the files (or directories involved
is named crontab, see bellow)
JT> wget = command line HTTP/HTTPS client
both Unix and Windows
I just wanted to say that
Hello Srevilak!
sgn> However, if the three steps are IO-bound, using multiple threads to
sgn> run them concurrently can lead to a big improvement.
One might also consider using some kind of thread pooler in this
setting. Perhaps one could be crafted on top of
jakarta-commons-pool
-Anton
--
av Shapira
Millennium ChemInformatics
>-Original Message-
>From: Anton Tagunov [mailto:[EMAIL PROTECTED]
>Sent: Wednesday, July 30, 2003 1:37 AM
>To: Tomcat Users List
>Subject: Re[2]: [Q] Is it safe to create threads in Tomcat web-apps?
>
>Hello Srevilak!
>
>sg
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