Same here, seems something was changed in how this is being managed memory-wise. It is only a problem if using large amounts of bars, but it should be fixed.

Steps:

1. Using the Reactor to produce a 100 strategy collection.  Currency pair doesn't matter.  I'm using 200 000 bars for the back test.

2. Once the Reactor is finished, I want to upload the entire 100 to the Portfolio so I select add all.  In the past once I did this, the Portfolio would automatically generate the Summary of my 100 and all the statistics to go with it.  Now it simply loads them into the Content tab, and I have to hit Calculate to generate a Portfolio summary.

3. Once I've hit Calculate, the Portfolio begins calculating the 100.  Usually once I've past 90 or so, it slows to a crawl and never quite makes it to 100 before cutting out and giving me an Out of Memory error (I don't believe the error page belongs to EA Studio - it looks more like a Chrome page).

I managed to optimize the memory usage for the Collection and Portfolio recalculation.

Please reload EA Studio to have the latest release.

Now it uses a maximum of 350 MB when calculating 300 strategies on 200 000 bars.
The previous version reaches more than 4 GB of RAM.

See the performance charts:

Current version:

Previous version:

I'll take care of the other misbehaviour also.

Please report any issues.

maybe this caused the crash in generating?

Great work Popov, reducing from 4GB to 400MB, wow! Amazing coding skills, thanks for the great update!

> hi, I cannot find the remove all button...

It is nothing special.

>  also, I have to click on calculate

We need to "Calculate" when we reload EA Studio. I tried to make the Portfolio stats persistent, but it added 4 MB to the collection file. I think it is safer to leave it without that for now. I'm not sure about the capacity of the "local storage" of the different devices. someone may decide to generate strategies on his watch. (Actually, I tried it on the infotainment system on my car, but it froze!? Please don't run the Reactor on your car during driving.)

>  Version: xx.xx"

It has versioning, but I bump it only when it needs to force a reload. ( Showing the blue bar "New version available"... ) I find it too cumbersome because I upload 5-10 versions per day when working spiritedly.

> but then he didint put all ..it sorted some strategies out

It can be resolved correlations.

>  it could be programming automatically add version number or a time stamp..

It is a good idea!

>  it could be programming automatically add version number or a time stamp..

We can see the EA Studio's update time at the bottom of the screen.
Thank you Roughey for the good idea!