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Adapt memory usage estimation for flushing

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This commit is contained in:
Pieter Wuille 2017-04-19 09:34:48 -07:00
parent 013a56aa1a
commit 0580ee08ff
2 changed files with 2 additions and 4 deletions
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4
src/txdb.h
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@ -19,10 +19,8 @@ class CBlockIndex;
class CCoinsViewDBCursor;
class uint256;
//! Compensate for extra memory peak (x1.5-x1.9) at flush time.
static constexpr int DB_PEAK_USAGE_FACTOR = 2;
//! No need to periodic flush if at least this much space still available.
static constexpr int MAX_BLOCK_COINSDB_USAGE = 10 * DB_PEAK_USAGE_FACTOR;
static constexpr int MAX_BLOCK_COINSDB_USAGE = 10;
//! -dbcache default (MiB)
static const int64_t nDefaultDbCache = 450;
//! -dbbatchsize default (bytes)

2
src/validation.cpp
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@ -1781,7 +1781,7 @@ bool static FlushStateToDisk(const CChainParams& chainparams, CValidationState &
nLastSetChain = nNow;
}
int64_t nMempoolSizeMax = GetArg("-maxmempool", DEFAULT_MAX_MEMPOOL_SIZE) * 1000000;
int64_t cacheSize = pcoinsTip->DynamicMemoryUsage() * DB_PEAK_USAGE_FACTOR;
int64_t cacheSize = pcoinsTip->DynamicMemoryUsage();
int64_t nTotalSpace = nCoinCacheUsage + std::max<int64_t>(nMempoolSizeMax - nMempoolUsage, 0);
// The cache is large and we're within 10% and 10 MiB of the limit, but we have time now (not in the middle of a block processing).
bool fCacheLarge = mode == FLUSH_STATE_PERIODIC && cacheSize > std::max((9 * nTotalSpace) / 10, nTotalSpace - MAX_BLOCK_COINSDB_USAGE * 1024 * 1024);