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Merge pull request #1566 from DeckerSU/patch-loadblockindexdb

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LoadBlockIndexDB speed-up for non-LWMAPOS chains (x5 perfomance boost)
This commit is contained in:
jl777
2019-06-15 22:15:19 -11:00
committed by GitHub
parent 21882605e1 103bca1ba7
commit 2a4c7cab14
1 changed files with 24 additions and 4 deletions
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28
src/main.cpp
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@@ -147,10 +147,28 @@ namespace {
struct CBlockIndexWorkComparator
{
bool operator()(CBlockIndex *pa, CBlockIndex *pb) const {
bool operator()(const CBlockIndex *pa, const CBlockIndex *pb) const {
// First sort by most total work, ...
if (pa->chainPower > pb->chainPower) return false;
if (pa->chainPower < pb->chainPower) return true;
if (ASSETCHAINS_LWMAPOS) {
/* Decker:
seems we had CChainPower classes compare here from Verus, it's slow, bcz of hard
arith_uint256 math in bool operator<(const CChainPower &p1, const CChainPower &p2),
this slows down setBlockIndexCandidates.insert operations in LoadBlockIndexDB(),
so, for faster block index db loading we will use check from Verus only for LWMAPOS
enabled chains.
*/
if (pa->chainPower > pb->chainPower) return false;
if (pa->chainPower < pb->chainPower) return true;
}
else
{
if (pa->chainPower.chainWork > pb->chainPower.chainWork) return false;
if (pa->chainPower.chainWork < pb->chainPower.chainWork) return true;
}
// ... then by earliest time received, ...
if (pa->nSequenceId < pb->nSequenceId) return false;
@@ -173,8 +191,10 @@ namespace {
* as good as our current tip or better. Entries may be failed, though, and pruning nodes may be
* missing the data for the block.
*/
//set<CBlockIndex*, CBlockIndexWorkComparator, std::allocator<CBlockIndex*>> setBlockIndexCandidates;
set<CBlockIndex*, CBlockIndexWorkComparator> setBlockIndexCandidates;
/** Number of nodes with fSyncStarted. */
int nSyncStarted = 0;