Memory Issue - VisualCron

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scholarchip
No customer Topic Starter

2010-05-02T22:09:54Z

I have a task that runs fine from the command line or Windows Scheduler. However when running from Visual Cron it gets a fatal error

Exception of type System.OutOfMemoryException was thrown.

Is there a maximum task allocated memory in Visual Cron -- and if so how do I change it

thanks

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Support
Official support

2010-05-02T23:38:30Z

How large output does the Task have?

Henrik
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scholarchip
No customer Topic Starter

2010-05-02T23:43:37Z

I can run the task so that it can use variable amounts of memory. So I experimented with that and it seems to die when it uses around 40M

Support
Official support

2010-05-02T23:49:00Z

We will try to reproduce this. The memory allocations are done in .NET so it is centrally controlled by .NET.

Henrik
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scholarchip
No customer Topic Starter

2010-05-04T16:14:13Z

We have investigated this further. Here are the results:
* This issue occurs with either client or tray client
* When it occurs with client, the client is using about 185 MB of memory
* When it occurs with tray client it is using about 23 MB of memory
* The error ALWAYS occurs when the task being run exceeds 200 MB of memory usage. We have duplicated that multiple times

In all I am very impressed with your application and we would like to buy an unlimited license, but we feel we need to resolve this issue first

Support
Official support

2010-05-04T16:21:28Z

Thank you for your research.

1. What kind of Task was this?

2. I assume you are having the client on the same machine as the server. How much memory do you have installed and how much memory free before running the Task?

3. Do you do anything special with the output of the Task - like sending it further via Variable etc?

Henrik
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scholarchip
No customer Topic Starter

2010-05-04T17:27:17Z

* The Tasks is a .Net application that creates Excel files.
* The machine runs a client (and not a server)
* The machine has 4 GB of memory, and the maximum usage was around 1GB
* The CPU usage was under 5% at all times

scholarchip
No customer Topic Starter

2010-05-04T17:28:18Z

Also, we do not do anything special. The task runs and ends as one single executable

Support
Official support

2010-05-04T17:30:11Z

But it is of task type Execute, right?

I meant that this machine had the VisualCron server installed, is that correct (Client and Server are on the same machine).

Henrik
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scholarchip
No customer Topic Starter

2010-05-04T17:47:33Z

#10

Ah .. No . It is "Remote Execute"

Support
Official support

2010-05-04T19:23:09Z

#11

I am not sure I follow you 100%. We were expecting another task type. Are you getting the memory problem on the target or server machine?

If the answer is the server machine it sounds really strange as we are just sending a commandline to the remote machine.

Henrik
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scholarchip
No customer Topic Starter

2010-05-04T19:51:04Z

#12

The memory issue occurs on the target machine.
* On the server we create task as "remote execute" on the target server (which has only a client)
* When it runs on the target machine (client) it will fail if the executable needs more than roughly 100 MB

Support
Official support

2010-05-04T23:06:00Z

#13

Hi again,

this was something new for us as we never have received this kind of report before. After some research we found that WMI, which is the underlying technology for remote execution, has a default memory limit of 127 MB.

It should be possible to alter this limit. We have create a small application that *should* change the limit to 0,1 GB below the total memory on the machine.

Please run this on your target machine and the run the Task again. Please get back with result.

File Attachment(s):

WMIConfig.zip (5kb) downloaded 57 time(s).

Henrik
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scholarchip
No customer Topic Starter

2010-05-05T01:00:38Z

#14

We ran the job on the target machine. It returns with a message "SetQuota result:true"
However, the same issue occurs again. Also in exactly the same memory size

Support
Official support

2010-05-05T10:02:40Z

#15

That was a pity. The problem is described here and maybe you can run the VBS script:

http://us.generation-nt....emote-help-25987582.html
http://blogs.technet.com...mi-provider-service.aspx

We tried to alter these values described in here:

http://msdn.microsoft.co...aa394671%28VS.85%29.aspx

Henrik
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scholarchip
No customer Topic Starter

2010-05-05T13:26:27Z

#16

This is helpful! We will try it and inform you of result
Thanks for all your assistance

scholarchip
No customer Topic Starter

2010-05-05T16:41:54Z

#17

Good News!
Your script actually worked.. the only thing is that we needed to reboot the machine after running. One of our two large memory tasks ran fine. We are now running the other
Thanks much.. we will keep you informed

Support
Official support

2010-05-05T16:43:10Z

#18

Thanks for the feedback. Did you use the original file I sent? Would be great if that works after restart.

Henrik
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scholarchip
No customer Topic Starter

2010-05-05T16:45:25Z

#19

Yes... your executable worked exactly as advertised. A reboot is necessary.

scholarchip
No customer Topic Starter

2010-05-05T20:13:03Z

#20

We got our second application running large memory running.
This is very good! Thanks much for your help!
I think we will go for a site license.

Support
Official support

2010-05-05T20:22:05Z

#21

Thanks for the feedback. We are not sure if we should automate this or if we should put this setting somewhere. As we have not heard of this before we assume that this is not the normal case (to run applications that uses so much memory). However, it is important to know that this workaround works. Thank you for your patience.

Henrik
Support
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