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Type: Task
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Resolution: Fixed
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Priority: Major - P3
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Affects Version/s: None
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Component/s: Storage
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Fully Compatible
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Execution Team 2020-07-27, Execution Team 2020-08-10, Execution Team 2020-08-24
Currently, each node in the tree, including leaf pointers, has 256 shared pointers. Each shared pointer is 16 bytes, for a total of 4kB for the pointers. As the first allocation size > 4kB is 6 kB, and each document results in 2 nodes (one for the index, one for record store), each document has 12kB overhead (18 kB for replica sets due to the oplog).
This causes each Node to be > 4kB resulting in excessive memory usage during testing and OOMs.
- is duplicated by
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SERVER-38939 Be more memory efficient for leaf nodes in biggie
- Closed
- is related to
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SERVER-49008 Create a new jstest to track Biggie's metrics
- Closed