I am wondering why I'm not able to allocate more that 1,000 MB of memory in my 32-bit .NET process. The following mini application throws an OutOfMemoryException after having allocated 1,000 MB. Why 1,000 MB, and not say 1.8 GB? Is there a process-wide setting I could change? static void Main(string[] args) { ArrayList list = new Ar...
In my application there is a specific time when a number of large objects are all released at once. At that time I would like to do a garbage collection on specifically the large object heap (LOH). I'm aware that you cannot do that, you must call GC.Collect(2) because the GC is only invoked on the LOH when it is doing a generation 2 co...
I know that all arrays in .net are limited to 2 GB, under this premise, I try not to allocate more that n = ((2^31) - 1) / 8 doubles in an array. Nevertheless, that number of elements still doesn't seem to be valid. Anyone knows how can I determine at run time the maximum number of elements given sizeof(T)? I know that whatever quantity...
My application does a good deal of binary serialization and compression of large objects. Uncompressed the serialized dataset is about 14 MB. Compressed it is arround 1.5 MB. I find that whenever I call the serialize method on my dataset my large object heap performance counter jumps up from under 1 MB to about 90 MB. I also know that un...
I am runing .net code on a machine with the page file size set to zero. My application logs System.Diagnostics.Process.PagedMemorySize64 and is showing a value > 0. How can this be? The documentation for PagedMemorySize64 reads: The value returned by this property represents the current size of memory in the virtual memory pagin...
After some experimenation using CLR Profiler, I found that: Node[,] n = new Node[100,23]; //'84,028 bytes, is not placed in LOH Node[,] n = new Node[100,24]; //'86,428 bytes, is public struct Node { public int Value; public Point Point; public Color Color; public bool Handled; public Object ...
In a previous question I asked possible programatic ways of maximising the largest block allocatable on the LOH. I'm still seeing the problems, but now I'm trying to get my head around why the LOH seems to grow and shrink in size, yet I'm still seeing OutOfMemoryExceptions that tally with what others have reported as being due to LOH fra...