HiĀ Kefu and Adam,
curious whether we have reliable enough set of numbers on how spatially
efficient btree allocator is? I recall some Adam's comment in the PR
showing 2x saving in BTree allocator vs. AVL on.
But the data set there seems to be relatively small - total consumed RAM
is just a few MBs. Anything else available?
I recall Adam promised to run more vast testing at perf meeting....
Thanks,
Igor
On 6/25/2021 11:35 AM, Kefu Chai wrote:
> hi Adam,
>
> while looking at Hybrid Allocator [0] and the newly introduced Btree
> Allocator [1], i am wondering if we still need the bitmap allocator to
> cap the memory usage due to the large overhead of AVL allocator?
> because btree is much more spatially efficient than AVL tree.
>
> cheers
>
> ---
> [0]
https://github.com/ceph/ceph/pull/33365
> [1]
https://github.com/ceph/ceph/pull/41828
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