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coins: increase default dbbatchsize to 32 MiB

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The default database write batch size is increased from 16 MiB to 32 MiB to improve I/O efficiency and performance during UTXO flushes, particularly during Initial Block Download and `assumeutxo` loads.

On systems with slower I/O, a larger batch size reduces overhead from numerous small writes. Measurements show this change provides a modest performance improvement on most hardware during a critical section, with a minimal peak memory increase (approx. 75 MiB on default settings).
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Lőrinc
2025-08-27 21:24:51 -07:00
parent 8bbb7b8bf8
commit b6f8c48946
1 changed files with 1 additions and 1 deletions
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src/kernel/caches.h
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@@ -12,7 +12,7 @@
//! Suggested default amount of cache reserved for the kernel (bytes)
static constexpr size_t DEFAULT_KERNEL_CACHE{450_MiB};
//! Default LevelDB write batch size
static constexpr size_t DEFAULT_DB_CACHE_BATCH{16_MiB};
static constexpr size_t DEFAULT_DB_CACHE_BATCH{32_MiB};
//! Max memory allocated to block tree DB specific cache (bytes)
static constexpr size_t MAX_BLOCK_DB_CACHE{2_MiB};