The dual thread allocator is a wrapper that combines dynamic heap and bucket allocators. More specifically, it combines:
You can customize the block sizes of the two dynamic heap allocators:
The usage report contains information for all three parts of the allocator. For example:
[ALLOC_DEFAULT] Dual Thread Allocator
Peak main deferred allocation count 135
[ALLOC_BUCKET]
Large Block size 4.0 MB
Used Block count 1
Peak Allocated bytes 3.3 MB
[ALLOC_DEFAULT_MAIN]
Peak usage frame count: [16.0 MB-32.0 MB]: 8283 frames, [32.0 MB-64.0 MB]: 1 frames
Requested Block Size 16.0 MB
Peak Block count 2
Peak Allocated memory 53.3 MB
Peak Large allocation bytes 40.2 MB
[ALLOC_DEFAULT_THREAD]
Peak usage frame count: [64.0 MB-128.0 MB]: 8284 frames
Requested Block Size 16.0 MB
Peak Block count 2
Peak Allocated memory 78.3 MB
Peak Large allocation bytes 47.3 MB
Note: The Peak main deferred allocation count is the number of items in a deletion queue. The main thread must delete any allocation it made. If another thread deletes an allocation, that allocation is added to a queue. The allocation waits in the queue for the main thread to delete it. It is then counted as a deferred allocation.