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Rotate blockchain cache (#1709)

This commit is contained in:
Arkadiy Paronyan 2016-07-25 18:17:45 +02:00 committed by Gav Wood
parent b220e07feb
commit 898f1410a5
1 changed files with 14 additions and 2 deletions
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16
ethcore/src/blockchain/blockchain.rs
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@ -823,10 +823,21 @@ impl BlockChain {
/// Ticks our cache system and throws out any old data.
pub fn collect_garbage(&self) {
if self.cache_size().total() < self.pref_cache_size.load(AtomicOrder::Relaxed) { return; }
if self.cache_size().total() < self.pref_cache_size.load(AtomicOrder::Relaxed) {
// rotate cache
let mut cache_man = self.cache_man.write();
const AVERAGE_BYTES_PER_CACHE_ENTRY: usize = 400; //estimated
if cache_man.cache_usage[0].len() > self.pref_cache_size.load(AtomicOrder::Relaxed) / COLLECTION_QUEUE_SIZE / AVERAGE_BYTES_PER_CACHE_ENTRY {
trace!("Cache rotation, cache_size = {}", self.cache_size().total());
let cache = cache_man.cache_usage.pop_back().unwrap();
cache_man.cache_usage.push_front(cache);
}
return;
}
for _ in 0..COLLECTION_QUEUE_SIZE {
for i in 0..COLLECTION_QUEUE_SIZE {
{
trace!("Cache cleanup round started {}, cache_size = {}", i, self.cache_size().total());
let mut blocks = self.blocks.write();
let mut block_details = self.block_details.write();
let mut block_hashes = self.block_hashes.write();
@ -858,6 +869,7 @@ impl BlockChain {
blocks_blooms.shrink_to_fit();
block_receipts.shrink_to_fit();
}
trace!("Cache cleanup round complete {}, cache_size = {}", i, self.cache_size().total());
if self.cache_size().total() < self.max_cache_size.load(AtomicOrder::Relaxed) { break; }
}