Re: Tomcat benchmark

2008-01-22 Thread samehgad

Hi Andrew

You can determine the number of concurrent requests using sample formula

This formula gives a decent estimate for the number of threads you can
create: 

(MaxProcessMemory - JVMMemory - ReservedOsMemory) / (ThreadStackSize) =
Number of threads

Example:

For Java 1.5 I get the following results assuming that the OS reserves about
120MB:
1.5GB allocated to JVM: (2GB-1.5Gb-120MB)/(1MB) = ~380 threads
1.0GB allocated to JVM: (2GB-1.0Gb-120MB)/(1MB) = ~880 threads

I love this application server
http://www.reviewservers.com/index.php?blog/show/7

Regards,




Andrew Hole wrote:
 
 Hi!
 
 Is there any benchmark test available that allow me to determine the
 number
 of concurrent requests that Tomcat supports for a particular type of
 hardware?
 
 Thanks a lot
 
 

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RE: Tomcat benchmark

2008-01-21 Thread Peter Crowther
 From: Andrew Hole [mailto:[EMAIL PROTECTED]
 Is there any benchmark test available that allow me to
 determine the number
 of concurrent requests that Tomcat supports for a particular type of
 hardware?

You already have it: your own Tomcat, your own app, your own mix of requests, 
and your own hardware (and your own database server and data if you're using 
them)!  Apps and request mixes are so variable that there can be no standard 
benchmark; instead, you'll have to test your own app using an appropriate 
stress-testing tool such as JMeter to determine your limits.

Sorry not to be able to point you at a standard, but for a typical webapp 
Tomcat is only a few percent of the load.  Any benchmark that omits 90%-95% of 
the variable isn't useful, in my opinion.

- Peter

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Re: Tomcat benchmark

2008-01-21 Thread Christopher Schultz

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Peter,

Peter Crowther wrote:
| From: Andrew Hole [mailto:[EMAIL PROTECTED]
| Is there any benchmark test available that allow me to
| determine the number
| of concurrent requests that Tomcat supports for a particular type of
| hardware?
|
| You already have it: your own Tomcat, your own app, your own mix of
| requests, and your own hardware (and your own database server and data
| if you're using them)!

I would have just looked at the Connector configuration. That will
tell you how many connections Tomcat is willing to accept concurrently.
Whether your hardware can handle that many connections, well...

- -chris

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Re: Tomcat benchmark

2008-01-21 Thread David Brown
Hello Andrew, if you are looking for comprehensive HW review for particular 
hardware good luck. The following will get you started and a PDF by Peter Lin 
using JMeter is the closest I have seen. HTH, David

http://wiki.apache.org/tomcat/FAQ/Performance_and_Monitoring

Andrew Hole wrote ..
 Hi!
 
 Is there any benchmark test available that allow me to determine the number
 of concurrent requests that Tomcat supports for a particular type of
 hardware?
 
 Thanks a lot

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Re: Tomcat benchmark

2007-08-16 Thread Matthew Kerle
I assume you've already Googled what you're looking for and not found 
anything? What are you after exactly, performance or feature comparison? 
please be more specific...


I assume you're after more than this:
http://en.wikipedia.org/wiki/Comparison_of_application_servers

Andrew Hole wrote:

Someone have a case study wich compare Tomcat with others application
servers?

Thanks a lot
Andrew

  


--
Matthew Kerle IT Consultant Canberra, Australia Mobile: +61404 096 863 
Email : [EMAIL PROTECTED] Web : http://threebrightlights.blogspot.com/



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Re: Tomcat benchmark

2007-08-16 Thread Andrew Hole
Compare performance...

On 8/16/07, Matthew Kerle [EMAIL PROTECTED] wrote:

 I assume you've already Googled what you're looking for and not found
 anything? What are you after exactly, performance or feature comparison?
 please be more specific...

 I assume you're after more than this:
 http://en.wikipedia.org/wiki/Comparison_of_application_servers

 Andrew Hole wrote:
  Someone have a case study wich compare Tomcat with others application
  servers?
 
  Thanks a lot
  Andrew
 
 

 --
 Matthew Kerle IT Consultant Canberra, Australia Mobile: +61404 096 863
 Email : [EMAIL PROTECTED] Web : http://threebrightlights.blogspot.com/


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Re: Tomcat benchmark

2007-08-16 Thread bajistaman

Probably the best place to start is
http://tomcat.apache.org/faq/performance.html
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Re: Tomcat benchmark

2007-08-16 Thread Leon Rosenberg
both links are from 2004...
Leon

On 8/16/07, bajistaman [EMAIL PROTECTED] wrote:

 Probably the best place to start is
 http://tomcat.apache.org/faq/performance.html and
 http://www.webperformanceinc.com/library/reports/ServletReport/index.html
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Re: Tomcat benchmark

2007-08-16 Thread bajistaman

I'm still using tomcat 5 :-) (and Weblogic 8.1), maybe someone interested
enough can apply the same test against newer products.

Johann
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