MemoryMamagerService buffers allocation policy
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Key: DIRECTMEMORY-53
URL: https://issues.apache.org/jira/browse/DIRECTMEMORY-53
Project: Apache DirectMemory
Issue Type: Improvement
Reporter: Benoit Perroud
Priority: Minor
MemoryMamagerService with multiple buffers has a really simple, even buggy
allocation policy : once a allocation fail (return null), we try the next
buffer. If the allocation fails a second time, we return a failure (a null
Pointer) to the caller.
If all the previous buffer were full at one point, we stick to the last buffer,
without any chance to try to allocate into a previous different buffer (which
could have again free space due to expiration or pointer freeing).
My idea here is to first correct this behavior, but then enhance the
fonctionality by providing configurable buffer allocation policy. For example :
- round robin allocation, with a certain amount of retries (this would also
relax some concurrency contention)
- allocate into the buffer with the more free space
- allocate into the less fragmented buffer
- random
- ...
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