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From bugzi...@apache.org
Subject DO NOT REPLY [Bug 40109] New: - Memory leak on Repeated simultaneous requests from same browser without waiting for a response
Date Tue, 25 Jul 2006 13:05:35 GMT
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http://issues.apache.org/bugzilla/show_bug.cgi?id=40109

           Summary: Memory leak on Repeated simultaneous requests from same
                    browser without waiting for a response
           Product: Tomcat 4
           Version: 4.1.29
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: major
          Priority: P1
         Component: Connector:Coyote HTTP/1.1
        AssignedTo: tomcat-dev@jakarta.apache.org
        ReportedBy: bhaktavatsalam.yadlapalli@radian.biz


I am tomcat 4.1.29 as standalone web server with the CoyoteConnector and the 
configuration as follows

 

    <Connector className="org.apache.coyote.tomcat4.CoyoteConnector"

port="8080"               minProcessors="5" maxProcessors="75"

               enableLookups="true" redirectPort="8443"

               acceptCount="100" debug="0" connectionTimeout="20000"

               useURIValidationHack="false" disableUploadTimeout="true" />

 

I noticed the memory leak if there are multiple repeated requests from same 
browser simultaneously without waiting for response. It is keep accumulating 
the memory and not releasing for eve r(even after the session timeout). 

 

Similar test case with 100 requests ( ran to completion) one after other is 
not leaking any memory.

 

We are using Synchronized Token while submitting the forms but we are not 
using the same in other cases like HTTP/GET.

 

I ran the tomcat with JProfiler and noticed that the memory leak is pointing 
to org.apache.coyote.http11.InternalInputBuffer.

 

I used the Tomcat 4.1.31 and still has same problem.

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