You could try jmeter http://jakarta.apache.org/jmeter/index.html
-Original Message-
From: kwirirai [mailto:[EMAIL PROTECTED]
Sent: 11 February 2004 17:32
To: Tomcat Users List
Subject: Re: Servlet thread safety in Tomcat
Thanks to All for your help ! :-)
Sofar it seems to be working
Mike Curwen wrote:
1) if by 'localized' you mean "I've moved the variables from outside the
doGet()/doPost() methods, to inside those methods"... then this is why
there is no 'data corruption' (due to multithreading issues), and it's
why you don't require synchronized access to those variables.
erent set of parameters, say ones that would produce '450').
> -Original Message-
> From: kwirirai [mailto:[EMAIL PROTECTED]
> Sent: Wednesday, February 11, 2004 11:32 AM
> To: Tomcat Users List
> Subject: Re: Servlet thread safety in Tomcat
>
>
Thanks to All for your help ! :-)
Sofar it seems to be working ,no data corruption,I localized all
variables ,put in some synchronized blocks,removed them
again(synchronized blocks) and seems to work, but not sure why without
the synchrozed blocks its working . :-\
Is there free software that I
Howdy,
>this has made me think a lot about threading , it is really complicated
>, I have researched about it but never found a clean solution to
Threading is complicated, yes, and difficult to do well. Which is why
when possible you should let someone else do the work for you and use a
library
Thanks very much for your contribution guys! :-)
This has given me new approaches to the problem.I intend to
remodify,try the synchronization and do the testing/benchmarking.But
this has made me think a lot about threading , it is really complicated
, I have researched about it but never found
MAIL PROTECTED]>
Sent: Monday, February 09, 2004 2:23 PM
Subject: RE: Servlet thread safety in Tomcat
>
> If you implement the SingleThreadModel interface for your Servlet class,
> TomCat will create a new instance for each request.
>
> Albert
>
> -Original Message
Howdy,
>Synchronization does produce overhead, but it's what you *must* do if
>you will not re-write your servlets to no longer contain instance
>fields, *and* you wish to provide thread safety.
Well-put. And you might be pleasantly surprised at how small the
overhead is. Which is why I always
s requests are handled. That's the whole point of
multi-threading the servlet... (so that requests don't pile up)?
Yoav.. is that completely wrong?
> -Original Message-
> From: kwirirai [mailto:[EMAIL PROTECTED]
> Sent: Monday, February 09, 2004 1:12 PM
> To: Tom
tate your specific requirements and we can help you design
>>>servlets/objects that will meet those requirements. Your original
>>>
>>>
>>post
>>
>>
>>>is too broad to solicit a detailed response.
>>>
>>>Yoav Shapira
>>>Millennium ChemInformat
Howdy,
>But if I am to synchronise my code blocks won't that slow done the
>application, or is there a "mode" that you can put Tomcat into so that
>it will create a new instance
>servlet thread with its own variables and execution space and stuff
>like that .Because I was thinking putting all
D]
Subject: Servlet thread safety in Tomcat
Hi All
I am developing an application that uses JavaMail.What I am
concered is
the issue of thread safety,and efficiency.My question is do I need
to
employ synchronized blocks in my Servlet code or is there another
snipet
for (int i = msgCount; i >=stopPoint; i--) {
m = folder.getMessage(i); //get the message
}
This actually hapening when one session is downloading suppose 300
emails, and the other lets say 50.This suppose ,what I am actually doing is
I have two machi
Howdy,
>Thanks ,It realy means I have to redesign the whole app ,but there
>is the issue of networking and Java Mail, it seems the other servlet
has
>to wait for a very long time for the other servlet to get all the
>mail.My question is can Tomcat process two sessions of a servlet
>downloadin
Howdy,
>But how does Tomcat log the sessions variables PER request then? Is the
>session object independent of the servlet object, and is there one
>session object PER request?
The session object is independent of the servlet object. There is NOT
one session per request (unless the user's sessi
27;s generically described as:
"the data is actualy mixing up".
-Original Message-
From: kwirirai [mailto:[EMAIL PROTECTED]
Sent: Monday, February 09, 2004 12:48 PM
To: [EMAIL PROTECTED]
Subject: Servlet thread safety in Tomcat
Hi All
I am developing an application that use
> >
> >>-Original Message-----
> >>From: kwirirai [mailto:[EMAIL PROTECTED]
> >>Sent: Monday, February 09, 2004 12:48 PM
> >>To: [EMAIL PROTECTED]
> >>Subject: Servlet thread safety in Tomcat
> >>
> >>Hi All
> >&g
My initial thought ( :-) forgive me its some time since I have coded
servlets) was that Tomcat will create a new servlet instance that is
totally independed of the other, for each request.
Tomcat will not create a new instance of a servlet for every request to
that servlet. Tomcat will cre
Howdy,
>My initial thought ( :-) forgive me its some time since I have coded
>servlets) was that Tomcat will create a new servlet instance that is
>totally independed of the other, for each request.
Tomcat will not create a new instance of a servlet for every request to
that servlet. Tomcat w
> >Sent: Monday, February 09, 2004 12:48 PM
> >To: [EMAIL PROTECTED]
> >Subject: Servlet thread safety in Tomcat
> >
> >Hi All
> >I am developing an application that uses JavaMail.What I am
> concered is
> >the issue of thread safety,and efficie
: Servlet thread safety in Tomcat
Hi All
I am developing an application that uses JavaMail.What I am concered is
the issue of thread safety,and efficiency.My question is do I need to
employ synchronized blocks in my Servlet code or is there another way
to
implement thread safety.I have been
TECTED]
>Sent: Monday, February 09, 2004 12:48 PM
>To: [EMAIL PROTECTED]
>Subject: Servlet thread safety in Tomcat
>
>Hi All
>I am developing an application that uses JavaMail.What I am concered is
>the issue of thread safety,and efficiency.My question is do I need to
>em
Hi All
I am developing an application that uses JavaMail.What I am concered is
the issue of thread safety,and efficiency.My question is do I need to
employ synchronized blocks in my Servlet code or is there another way to
implement thread safety.I have been experimenting with the application
and I
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