When I grab data using the PeristenceManager I can see the increase in memory use equivelant to the amount of data retrived. However when I clear those entities from the cache, the memory does not decrease. If the entities are grabbed again, the memory is increased by the same amount. If I continue this loop I can blowout memory use to the point where the application fails.

 

I have two questions.

 

I clear the cache using QueryCache.Clear() and DataSet.Clear()  ... Is this the correct way to do so?

 

and if this is the correct way, then it appears there is a memory leak within Ideablade. If a query increased memory use by 50mb (example only) and I then clear that cache, that 50mb is not released. Grabbing that data again increases memory use by another 50mb (100mb in total).

 

Cheers,

Paul Twomey

MEX

 

Do you still see this symptom if you use RemoveEntities instead? Also, what version of DevForce 2009 are you using, and is there any chance you could upload your test solution for me to take a look at? I'll certainly test this to see if there's a problem, but it might just be that the cleanup hasn't occurred yet. I don't know when garbage collection occurs for Clear and will ask.

 

-- Robert

Using version 3.7.1.0

 

Ah indeed RemoveEntities does indeed work, that's good news.

 

I also started cleaing my grid controls data/binding source and that seems to make the .Clear() calls work, but they take longer to cleanup than RemoveEntities.

 

I'm not yet convinced, I still have definite memory leaks ... But there may be other culprits.

 

Cheers,

Paul Twomey

MEX