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Is there a solution for possible memory leak?

Is there a solution for possible memory leak?

Home Forums ZAPTEST Old Posts Is there a solution for possible memory leak?

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  • #30702
    Curtis Don
    Participant

      Hello Zap,

      We use ZAPTEST and have a drive test with multiple RunTest calls in it:
      We are getting System.OutOfMemory Exception was thrown constantly. We are running many tests in succession, but we NEED to do that. Any ideas on how to prevent this? I tried running %windir%system32rundll32.exe advapi32.dll,ProcessIdleTasks, but it doesn’t appear to work. Need a clue on this one!

      Thanks.

      #30703
      Sasha ZAP
      Moderator

        Hello CurtisDo,

        Thank-you for your question.

        Basically you have to know there is no functional testing tool which can run without exiting it at some point of time, each running of such tools use amount of memory which its free depends on ending the tool’s process, meaning exiting it eventually;
        Plus, the actual AUT (Application Under Test) which ZAPTEST needs to reopen each time it executes its business processes, although I believe in your testing script it eventually logout but then login back for the next iteration which means the memory is still being used each login to the AUT and also its capacity is being increased due to business processes needs.

        Based on the above there is a serious problem of freeing memory if you run any testing tool and the AUT for a long period of time, and because of this problem sometimes the “Out of memory” message appears in ZAPTEST:
        Therefore I believe the best way to overcome this issue is to run ZAPTEST for less amount of time, and make sure between every several runs ZAPTEST will be completely restarted (Including closing its process) and same thing regarding the tested AUT.

        I believe there is a possibility to make the above somewhat an automatic process, but it may never be 100% free of problems (The ZAPTETAUT memory may not get free as expected if the applications will have closing difficulties, and because the process is automatic we will not have control on it during it run phase).

        To make it automatic you can try to do the following:

        You can use such utilities as the MS Windows’ “Task Scheduler” to execute ZAPTEST and to make sure both ZAPTEST and the AUT processes will be closed after several runs, this you can do by executing a small VBS files such as the following from within the MS Windows’ “Task Scheduler”:

        Save the folowing script into a text file, name it as “Execution” and change its suffix from “txt” to “vbs” (Change the “Your Test Name” to the actual test you want to execute):
        Set WshShell = CreateObject(“WScript.Shell”)
        WshShell.Run “C:Your Test Name.zap”
        WshShell.AppActivate “ZAPTEST”
        WScript.Sleep 5000
        WshShell.SendKeys “{F5}”

        Save the following script into a text file, “name it as “End Process” and change its suffix from “txt” to “vbs” (Change the “Process Name” to the actual process name you want to end):
        Dim blnRunning, colProcesses, objProcess, myProcess
        myProcess = “Process Name”
        blnRunning = False
        Set colProcesses = GetObject(“winmgmts:{impersonationLevel=impersonate}”).ExecQuery( “Select * From Win32_Process”, , 48 )
        For Each objProcess in colProcesses
        If LCase( myProcess ) = LCase( objProcess.Name ) Then
        myProcess = objProcess.Name
        objProcess.Terminate()
        End If
        Next
        If blnRunning Then
        Do Until Not blnRunning
        Set colProcesses = GetObject(“winmgmts:{impersonationLevel=impersonate}”).ExecQuery( “Select * From Win32_Process Where Name = ‘”& myProcess & “‘” )
        WScript.Sleep 100 ‘Wait for 100 MilliSeconds
        If colProcesses.Count = 0 Then ‘If no more processes are running, exit loop
        blnRunning = False
        End If
        Loop
        End If

        Both the above scripts can be used on different applications, such as ZAPTEST and all of your AUTs, rename the above scripts according to the app it handles, each script handles a single app.

        Hope this will give you more automatic control upon the ZAPTEST tests’ executions, but you have to remember the basic fact:
        In order to have memory you must first free memory, and the best way to do it is by ending processes running in the OS background.

        Please contact Zap for further help.

        Thanks,
        Sasha

        #30704
        Curtis Don
        Participant

          Thank-you Sasha, the latest version does fix this problem!! great!

          #30887
          Sasha ZAP
          Moderator

            Hello again CurtisDo,

            The latest ZAPTEST versions do not have any memory leaks no more:
            Please download the latest version from ZAP portal (Or request for the newest version) and you will not have this issue no more.

            Please contact ZAP for further help.

            Thanks,
            Sasha

            #30889
            Sasha ZAP
            Moderator

              Hello Curtis,

              This issue was fixed in v15.1.40. Please download the latest version on our portal and re-install ZAPTEST.

              Sincerely,
              Sasha

              #30890
              Curtis Don
              Participant

                Thank you Sasha, the latest version does fix this problem!! great!

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