74 lines
3.1 KiB
Rust
74 lines
3.1 KiB
Rust
// Copyright 2015-2020 Parity Technologies (UK) Ltd.
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// This file is part of Open Ethereum.
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// Open Ethereum is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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// Open Ethereum is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with Open Ethereum. If not, see <http://www.gnu.org/licenses/>.
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use std::collections::HashMap;
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use std::path::Path;
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use ethcore::client::{ClientConfig, DatabaseCompactionProfile};
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use super::kvdb_rocksdb::{CompactionProfile, DatabaseConfig};
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pub fn compaction_profile(profile: &DatabaseCompactionProfile, db_path: &Path) -> CompactionProfile {
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match profile {
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&DatabaseCompactionProfile::Auto => CompactionProfile::auto(db_path),
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&DatabaseCompactionProfile::SSD => CompactionProfile::ssd(),
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&DatabaseCompactionProfile::HDD => CompactionProfile::hdd(),
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}
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}
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/// Spreads the `total` (in MiB) memory budget across the db columns.
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/// If it's `None`, the default memory budget will be used for each column.
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/// 90% of the memory budget is assigned to the first column, `col0`, which is where we store the
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/// state.
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pub fn memory_per_column(total: Option<usize>) -> HashMap<u32, usize> {
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let mut memory_per_column = HashMap::new();
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if let Some(budget) = total {
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// spend 90% of the memory budget on the state column, but at least 256 MiB
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memory_per_column.insert(ethcore_db::COL_STATE, std::cmp::max(budget * 9 / 10, 256));
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// spread the remaining 10% evenly across columns
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let rest_budget = budget / 10 / (ethcore_db::NUM_COLUMNS as usize - 1);
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for i in 1..ethcore_db::NUM_COLUMNS {
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// but at least 16 MiB for each column
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memory_per_column.insert(i, std::cmp::max(rest_budget, 16));
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}
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}
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memory_per_column
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}
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/// Spreads the `total` (in MiB) memory budget across the light db columns.
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pub fn memory_per_column_light(total: usize) -> HashMap<u32, usize> {
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let mut memory_per_column = HashMap::new();
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// spread the memory budget evenly across columns
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// light client doesn't use the state column
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let per_column = total / (ethcore_db::NUM_COLUMNS as usize - 1);
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// Note: `col0` (State) is not used for the light client so setting it to a low value.
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memory_per_column.insert(0, 1);
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for i in 1..ethcore_db::NUM_COLUMNS {
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// but at least 4 MiB for each column
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memory_per_column.insert(i, std::cmp::max(per_column, 4));
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}
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memory_per_column
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}
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pub fn client_db_config(client_path: &Path, client_config: &ClientConfig) -> DatabaseConfig {
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let mut client_db_config = DatabaseConfig::with_columns(ethcore_db::NUM_COLUMNS);
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client_db_config.memory_budget = memory_per_column(client_config.db_cache_size);
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client_db_config.compaction = compaction_profile(&client_config.db_compaction, &client_path);
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client_db_config
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}
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