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transaction_prealloc_size
Information
There is a per-transaction memory pool from which various transaction-related allocations take memory. The initial size of the pool in bytes is transaction_prealloc_size. For every allocation that cannot be satisfied from the pool because it has insufficient memory available the pool is increased by transaction_alloc_block_size bytes. When the transaction ends the pool is truncated to transaction_prealloc_size bytes.
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