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NT7.4 - RAM hog
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Created: by kashter Attachments:6

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NT7.4 - RAM hog

  #41 (permalink)
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kashter View Post
Since my last post, I have had no issues, or more accurately, I have not been able to replicate the memory issue until today.

Here is whats happening:
I have had a single workspace (in addition to the default) with all my charts in it. I decided to the separate the workspace into two, each per instrument I trade. Memory was checked and no problems so far. I have not added any new indicators or instruments from the original workspace. I have Gomi's suit of indicators that have not caused any issues in the past, so I have no reason to suspect them. Each of the new workspace holds exactly same number of charts as the original workspace. I checked memory usage again and it was around 180-220,000k. This is normal, and gets as high as 300,00k close to EOD. Nothing serious here.

Now I changed slightly the indicator settings on few of the charts, just colors (mostly to suit visual). Saved each of the templates after each change. Saved both of the workspaces. Checked memory and it has climbed to >400,000k. Ok I thought this was the effect of the changes.

Later on (2 hrs later), the mouse started to lag - I am back with the original problem and the reason of this thread. Rechecked memory every 15 mins from there on and it was steadily climbing. As of this writing, it is at more than 1,300,000k (50,000k more since I started writing this post). The mouse continues to lag. Lucky I am not a scalper.

You mentioned in your reply to my original post that you will have someone at NT look into this. Have you had any feedback yet? Please let me know if you need more info as this seems like a bizarre issue and I would like to know how to avoid it (from my part I will not fiddle with indicator settings no more during trading).

EDIT: Video added though the lack of 'change' crosshair may make it hard t see.

We did look into it and was not able to reproduce the behaviour you experienced however, we did come across an item that did consume more memory than expected and put in a change for our next update. I am not saying that this pending improvement would change your experience.

Possible scenarios are:

- .NET runtime management (nothing we control)
- A non system indicator that eats memory
- An issue in NT

Trying to isolate of course is what is challenging. As a next step, I suggest upgrading to R5 which will release soon and see if there is any positive impact. If not, the next step would be to remove any non custom indicator to eliminate if these are the source of the memory consumption.

Last edited by NinjaTrader; April 15th, 2011 at 09:11 AM.
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