RE: Number of instances with SingleThreadModel

2003-11-14 Thread Neal
Does anyone know how I can check to see how much memory is in use or
available on Tomcat at any point in time?  I've been getting a
java.error.OutOfMemory error lately and I need to be able to track
what's going on.

Thanks.
Neal



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Re: Number of instances with SingleThreadModel

2003-11-14 Thread Jon Wingfield
Useful methods on the Runtime class:
In jdk 1+  Runtime.getRuntime().getTotalMemory();
In jdk 1+  Runtime.getRuntime().getFreeMemory();
In jdk 1.4 Runtime.getRuntime().getMaxMemory();
These methods are diagnostic. You'll need to find out why you are 
getting OutOfMemory errors. Time to profile your app...

HTH,

Jon

Neal wrote:

Does anyone know how I can check to see how much memory is in use or
available on Tomcat at any point in time?  I've been getting a
java.error.OutOfMemory error lately and I need to be able to track
what's going on.
Thanks.
Neal


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Re: Number of instances with SingleThreadModel

2003-11-14 Thread cyril vidal
Hi,

These infos are useful but have nothing to deal with my initial question;-))
So, I ask it again, if some people know about THIS subject:

is it possible in Tomcat's configuration to specify
the number of servlet instances created when this servlet implements the
javax.servlet.SingleThreadModel interface.

Thanks in advance for your response,
Regards,
Cyril.

Please don't use this thread to initiate another subject...

- Original Message -
From: Jon Wingfield [EMAIL PROTECTED]
To: Tomcat Users List [EMAIL PROTECTED]
Sent: Friday, November 14, 2003 10:58 AM
Subject: Re: Number of instances with SingleThreadModel


 Useful methods on the Runtime class:
 In jdk 1+  Runtime.getRuntime().getTotalMemory();
 In jdk 1+  Runtime.getRuntime().getFreeMemory();
 In jdk 1.4 Runtime.getRuntime().getMaxMemory();
 These methods are diagnostic. You'll need to find out why you are
 getting OutOfMemory errors. Time to profile your app...

 HTH,

 Jon


 Neal wrote:

  Does anyone know how I can check to see how much memory is in use or
  available on Tomcat at any point in time?  I've been getting a
  java.error.OutOfMemory error lately and I need to be able to track
  what's going on.
 
  Thanks.
  Neal
 
 
 
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RE: Number of instances with SingleThreadModel

2003-11-14 Thread Shapira, Yoav

Howdy,

These infos are useful but have nothing to deal with my initial
question;-

Yes, don't you hate it when people hijack threads?

is it possible in Tomcat's configuration to specify
the number of servlet instances created when this servlet implements
the
javax.servlet.SingleThreadModel interface.

No, it's not possible to specify.

SingleThreadModel is evil, don't use it.  If you're curious why, search
the archives of this list.

Yoav Shapira



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Re: Number of instances with SingleThreadModel

2003-11-14 Thread Remy Maucherat
cyril vidal wrote:

Hi,

These infos are useful but have nothing to deal with my initial question;-))
So, I ask it again, if some people know about THIS subject:
is it possible in Tomcat's configuration to specify
the number of servlet instances created when this servlet implements the
javax.servlet.SingleThreadModel interface.
No. The value is 20 instances.

There's a constant you can change in the StandardWrapper class, of 
course, and a parameter could be added in StandardContext to set it.

--
x
Rémy Maucherat
Senior Developer  Consultant
JBoss Group (Europe) SàRL
x
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Re: Number of instances with SingleThreadModel

2003-11-14 Thread Tim Funk
SingleThreadModel is also deprecated in 2.4 Servlet API

-Tim



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Re: Number of instances with SingleThreadModel

2003-11-14 Thread cyril vidal
thanks all for your responses.

Regards,
Cyril.

- Original Message -
From: Remy Maucherat [EMAIL PROTECTED]
To: Tomcat Users List [EMAIL PROTECTED]
Sent: Friday, November 14, 2003 2:57 PM
Subject: Re: Number of instances with SingleThreadModel


 cyril vidal wrote:

  Hi,
 
  These infos are useful but have nothing to deal with my initial
question;-))
  So, I ask it again, if some people know about THIS subject:
 
  is it possible in Tomcat's configuration to specify
  the number of servlet instances created when this servlet implements the
  javax.servlet.SingleThreadModel interface.

 No. The value is 20 instances.

 There's a constant you can change in the StandardWrapper class, of
 course, and a parameter could be added in StandardContext to set it.

 --
 x
 Rémy Maucherat
 Senior Developer  Consultant
 JBoss Group (Europe) SàRL
 x


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