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From bugzi...@apache.org
Subject DO NOT REPLY [Bug 34723] New: - IIS JK can't handle request under heavy load
Date Tue, 03 May 2005 10:33:23 GMT
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http://issues.apache.org/bugzilla/show_bug.cgi?id=34723

           Summary: IIS JK can't handle request under heavy load
           Product: Tomcat 5
           Version: Unknown
          Platform: Other
        OS/Version: other
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Native:JK
        AssignedTo: tomcat-dev@jakarta.apache.org
        ReportedBy: gunsnroz@hotmail.com


Using isapi_redirect.dll under IIS, 
I found that HTTP request is not handled (looks like hang).
 
My enviroment is :
 * Web server  
   - Windows 2000 SP4
   - IIS 5.0
   - isapi_redirect.dll (1.2.8 or above)
 
 * Servlet 
   - Fedora core 3
   - Tomcat 5.0.28

I used the Microsoft Stress Tool with these settings:
----------------------
GET /servlet-examples/servlet/RequestInfoExample (delay 10)
Concurrent Connection : 30 
Test Run time : 1 min.
-----------------------

When I run the MS Stress tool, the first 10 ~ 30 requests are handled.  
(verified by tomcat's access log) but all the remaing requests are not processed
and the result codes are all '403 forbidden'. 
When I use web browser, the IIS shows '403 too many connection' or something
like that.
 
I'll attach the test result of MS stress tool.

Using isapi_redirect 1.2.6, I get the better result (few 403 error ratio about
1/10).

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