Fragmentation notices in ANTS Memory Profiler 7

When you profile an assembly, ANTS Memory Profiler analyzes the amount of fragmentation on the Large Object Heap (LOH).

It performs the following calculations to assess whether fragmentation is causing a problem:

Fragmentation ratio = size of the largest empty block on the LOH : total size of all empty blocks on the LOH

Free space ratio = total size of all empty blocks on the LOH : total memory allocated to objects on the LOH

Depending on the result of this calculation, an appropriate message is displayed:

Memory fragmentation is restricting the size of objects that can be allocated.
(Displayed in red.)

The fragmentation ratio is less than 0.3:1.
Memory fragmentation is affecting the size of the largest object that can be allocated.
(Displayed in orange.)

The fragmentation ratio is less than 0.6:1, and greater than 0.3:1.
Memory fragmentation may be causing .NET to reserve too much free memory.
(Displayed in red.)

The free space ratio is greater than 0.7:1, and there are more than three empty blocks over 64k.
Memory fragmentation may be causing .NET to reserve too much free memory.
(Displayed in orange.)

The free space ratio is less than 0.7:1, and greater than 0.4:1, and there are more than three empty blocks over 64k.
There are many large fragments; fragmentation may become an issue over time.
(Displayed in black.)

There are more than ten empty blocks over 64k.