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Database performance tweaks (#2619)

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This commit is contained in:
Arkadiy Paronyan 2016-10-14 14:44:11 +02:00 committed by Gav Wood
parent 8ad1582208
commit 835cd13c0e
3 changed files with 15 additions and 11 deletions
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4
Cargo.lock generated
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@ -1406,7 +1406,7 @@ dependencies = [
[[package]]
name = "rocksdb"
version = "0.4.5"
source = "git+https://github.com/ethcore/rust-rocksdb#ffc7c82380fe8569f85ae6743f7f620af2d4a679"
source = "git+https://github.com/ethcore/rust-rocksdb#64c63ccbe1f62c2e2b39262486f9ba813793af58"
dependencies = [
"libc 0.2.15 (registry+https://github.com/rust-lang/crates.io-index)",
"rocksdb-sys 0.3.0 (git+https://github.com/ethcore/rust-rocksdb)",
@ -1415,7 +1415,7 @@ dependencies = [
[[package]]
name = "rocksdb-sys"
version = "0.3.0"
source = "git+https://github.com/ethcore/rust-rocksdb#ffc7c82380fe8569f85ae6743f7f620af2d4a679"
source = "git+https://github.com/ethcore/rust-rocksdb#64c63ccbe1f62c2e2b39262486f9ba813793af58"
dependencies = [
"gcc 0.3.35 (registry+https://github.com/rust-lang/crates.io-index)",
"libc 0.2.15 (registry+https://github.com/rust-lang/crates.io-index)",

3
ethcore/src/state_db.rs
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@ -31,8 +31,7 @@ pub const DEFAULT_ACCOUNT_PRESET: usize = 1000000;
pub const ACCOUNT_BLOOM_HASHCOUNT_KEY: &'static [u8] = b"account_hash_count";
const STATE_CACHE_BLOCKS: usize = 8;
const STATE_CACHE_BLOCKS: usize = 12;
/// Shared canonical state cache.
struct AccountCache {

19
util/src/kvdb.rs
View File

@ -23,7 +23,7 @@ use std::default::Default;
use std::path::PathBuf;
use rlp::{UntrustedRlp, RlpType, View, Compressible};
use rocksdb::{DB, Writable, WriteBatch, WriteOptions, IteratorMode, DBIterator,
Options, DBCompactionStyle, BlockBasedOptions, Direction, Cache, Column};
Options, DBCompactionStyle, BlockBasedOptions, Direction, Cache, Column, ReadOptions};
const DB_BACKGROUND_FLUSHES: i32 = 2;
const DB_BACKGROUND_COMPACTIONS: i32 = 2;
@ -207,6 +207,7 @@ pub struct Database {
db: RwLock<Option<DBAndColumns>>,
config: DatabaseConfig,
write_opts: WriteOptions,
read_opts: ReadOptions,
overlay: RwLock<Vec<HashMap<ElasticArray32<u8>, KeyState>>>,
path: String,
}
@ -227,6 +228,7 @@ impl Database {
try!(opts.set_parsed_options(&format!("rate_limiter_bytes_per_sec={}", rate_limit)));
}
try!(opts.set_parsed_options(&format!("max_total_wal_size={}", 64 * 1024 * 1024)));
try!(opts.set_parsed_options("verify_checksums_in_compaction=0"));
opts.set_max_open_files(config.max_open_files);
opts.create_if_missing(true);
opts.set_use_fsync(false);
@ -264,6 +266,8 @@ impl Database {
if !config.wal {
write_opts.disable_wal(true);
}
let mut read_opts = ReadOptions::new();
read_opts.set_verify_checksums(false);
let mut cfs: Vec<Column> = Vec::new();
let db = match config.columns {
@ -307,6 +311,7 @@ impl Database {
write_opts: write_opts,
overlay: RwLock::new((0..(num_cols + 1)).map(|_| HashMap::new()).collect()),
path: path.to_owned(),
read_opts: read_opts,
})
}
@ -421,8 +426,8 @@ impl Database {
Some(&KeyState::Delete) => Ok(None),
None => {
col.map_or_else(
|| db.get(key).map(|r| r.map(|v| v.to_vec())),
|c| db.get_cf(cfs[c as usize], key).map(|r| r.map(|v| v.to_vec())))
|| db.get_opt(key, &self.read_opts).map(|r| r.map(|v| v.to_vec())),
|c| db.get_cf_opt(cfs[c as usize], key, &self.read_opts).map(|r| r.map(|v| v.to_vec())))
},
}
},
@ -435,8 +440,8 @@ impl Database {
pub fn get_by_prefix(&self, col: Option<u32>, prefix: &[u8]) -> Option<Box<[u8]>> {
match *self.db.read() {
Some(DBAndColumns { ref db, ref cfs }) => {
let mut iter = col.map_or_else(|| db.iterator(IteratorMode::From(prefix, Direction::Forward)),
|c| db.iterator_cf(cfs[c as usize], IteratorMode::From(prefix, Direction::Forward)).unwrap());
let mut iter = col.map_or_else(|| db.iterator_opt(IteratorMode::From(prefix, Direction::Forward), &self.read_opts),
|c| db.iterator_cf_opt(cfs[c as usize], IteratorMode::From(prefix, Direction::Forward), &self.read_opts).unwrap());
match iter.next() {
// TODO: use prefix_same_as_start read option (not availabele in C API currently)
Some((k, v)) => if k[0 .. prefix.len()] == prefix[..] { Some(v) } else { None },
@ -452,8 +457,8 @@ impl Database {
//TODO: iterate over overlay
match *self.db.read() {
Some(DBAndColumns { ref db, ref cfs }) => {
col.map_or_else(|| DatabaseIterator { iter: db.iterator(IteratorMode::Start) },
|c| DatabaseIterator { iter: db.iterator_cf(cfs[c as usize], IteratorMode::Start).unwrap() })
col.map_or_else(|| DatabaseIterator { iter: db.iterator_opt(IteratorMode::Start, &self.read_opts) },
|c| DatabaseIterator { iter: db.iterator_cf_opt(cfs[c as usize], IteratorMode::Start, &self.read_opts).unwrap() })
},
None => panic!("Not supported yet") //TODO: return an empty iterator or change return type
}