141 lines
3.7 KiB
Rust
141 lines
3.7 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::cmp::max;
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const MIN_BC_CACHE_MB: u32 = 4;
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const MIN_DB_CACHE_MB: u32 = 8;
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const MIN_BLOCK_QUEUE_SIZE_LIMIT_MB: u32 = 16;
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const DEFAULT_DB_CACHE_SIZE: u32 = 128;
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const DEFAULT_BC_CACHE_SIZE: u32 = 8;
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const DEFAULT_BLOCK_QUEUE_SIZE_LIMIT_MB: u32 = 40;
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const DEFAULT_TRACE_CACHE_SIZE: u32 = 20;
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const DEFAULT_STATE_CACHE_SIZE: u32 = 25;
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/// Configuration for application cache sizes.
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/// All values are represented in MB.
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#[derive(Debug, PartialEq)]
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pub struct CacheConfig {
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/// Size of rocksDB cache. Almost all goes to the state column.
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db: u32,
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/// Size of blockchain cache.
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blockchain: u32,
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/// Size of transaction queue cache.
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queue: u32,
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/// Size of traces cache.
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traces: u32,
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/// Size of the state cache.
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state: u32,
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}
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impl Default for CacheConfig {
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fn default() -> Self {
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CacheConfig::new(
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DEFAULT_DB_CACHE_SIZE,
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DEFAULT_BC_CACHE_SIZE,
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DEFAULT_BLOCK_QUEUE_SIZE_LIMIT_MB,
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DEFAULT_STATE_CACHE_SIZE)
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}
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}
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impl CacheConfig {
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/// Creates new cache config with cumulative size equal to `total`, distributed as follows: 70%
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/// to rocksdb, 10% to the blockchain cache and 20% to the state cache. The transaction queue
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/// cache size is set to 40Mb and the trace cache to 20Mb.
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pub fn new_with_total_cache_size(total: u32) -> Self {
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CacheConfig {
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db: total * 7 / 10,
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blockchain: total / 10,
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queue: DEFAULT_BLOCK_QUEUE_SIZE_LIMIT_MB,
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traces: DEFAULT_TRACE_CACHE_SIZE,
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state: total * 2 / 10,
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}
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}
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/// Creates new cache config with given details.
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pub fn new(db: u32, blockchain: u32, queue: u32, state: u32) -> Self {
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CacheConfig {
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db,
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blockchain,
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queue,
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traces: DEFAULT_TRACE_CACHE_SIZE,
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state,
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}
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}
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/// Size of db cache.
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pub fn db_cache_size(&self) -> u32 {
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max(MIN_DB_CACHE_MB, self.db)
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}
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/// Size of block queue size limit
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pub fn queue(&self) -> u32 {
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max(self.queue, MIN_BLOCK_QUEUE_SIZE_LIMIT_MB)
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}
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/// Size of the blockchain cache.
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pub fn blockchain(&self) -> u32 {
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max(self.blockchain, MIN_BC_CACHE_MB)
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}
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/// Size of the traces cache.
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pub fn traces(&self) -> u32 {
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self.traces
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}
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/// Size of the state cache.
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pub fn state(&self) -> u32 {
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self.state * 3 / 4
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}
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/// Size of the jump-tables cache.
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pub fn jump_tables(&self) -> u32 {
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self.state / 4
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}
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}
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#[cfg(test)]
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mod tests {
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use super::CacheConfig;
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#[test]
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fn test_cache_config_constructor() {
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let config = CacheConfig::new_with_total_cache_size(200);
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assert_eq!(config.db, 140);
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assert_eq!(config.blockchain(), 20);
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assert_eq!(config.queue(), 40);
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assert_eq!(config.state(), 30);
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assert_eq!(config.jump_tables(), 10);
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}
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#[test]
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fn test_cache_config_db_cache_sizes() {
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let config = CacheConfig::new_with_total_cache_size(400);
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assert_eq!(config.db, 280);
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assert_eq!(config.db_cache_size(), 280);
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}
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#[test]
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fn test_cache_config_default() {
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assert_eq!(CacheConfig::default(),
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CacheConfig::new(
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super::DEFAULT_DB_CACHE_SIZE,
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super::DEFAULT_BC_CACHE_SIZE,
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super::DEFAULT_BLOCK_QUEUE_SIZE_LIMIT_MB,
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super::DEFAULT_STATE_CACHE_SIZE));
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}
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}
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