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Memory problem
beroetz
#1 Posted : Thursday, September 25, 2008 9:28:27 PM(UTC)
Groups: Member
Joined: 2/3/2008(UTC)
Posts: 1
Location: Bulgaria

Hello,


Firstly, I would like to say that I am pretty impressed by the ease of implementing and using UltiDev Cassini. However, we have faced with a serious problem:

We have developed a web-based application for 3-4 users. We have noticed that the memory, used by UltiDev Cassini for it, is growing constantly. For example, it starts from 40MB and increases with 0.5-2MB on every request. In some moment, it reduces (probably garbage collection) but not enough. Following a trend of constant growing, it reaches levels where the server starts to lag (probably it starts to page virtual memory from the disk).
Below is a sample line of the memory growth:
40 - 70 - 100 - 80 - 120 - 100 - 150 - 130 - ... - 400 - starts to lag ...

We have been trying to find the problem more than 2 weeks but without any result. It seems that every single request is cached in memory. Is there any setting to prevent this behavior? How can we find what exactly is happening with the memory? Can this be caused by any of the technologies that we are using (for example - AJAX)?

Thank you in anticipation for your help.


Best regards,
Zhivko
Ultidev Team
#2 Posted : Friday, September 26, 2008 5:10:16 AM(UTC)
Ultidev Team

Groups: Administration
Joined: 11/3/2005(UTC)
Posts: 2,253

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Hi, Zhivko.

Thank you for the positive feedback!

We are pretty sure that UltiDev Cassini is not leaking memory. We had a leak a long while ago, but it was fixed a couple of releases back and we tested for memory leaks very thoroughly. Please see if you can run your application under IIS and monitor IIS host process memory usage, just to see if this behavior is Cassini-specific.

You may also try to see what's going on with the memory by using SoS & WinDbg.

Please let us know what you have found.

Best regards,
UltiDev Team.
Please donate at http://www.ultidev.com/products/Donate.aspx to help us improve our products.
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