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[Wallet] Adjust staking properties to lower orphan rates. #617

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merged 2 commits into from May 26, 2018
Merged

[Wallet] Adjust staking properties to lower orphan rates. #617

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355e2d3
Update zPIV stake set more frequently.
presstab May 15, 2018
4c862f2
Lower stake hashdrift to 30 seconds.
presstab May 15, 2018
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2 changes: 1 addition & 1 deletion src/kernel.cpp
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Expand Up @@ -314,7 +314,7 @@ bool Stake(CStakeInput* stakeInput, unsigned int nBits, unsigned int nTimeBlockF
bool fSuccess = false;
unsigned int nTryTime = 0;
int nHeightStart = chainActive.Height();
int nHashDrift = 45;
int nHashDrift = 30;
CDataStream ssUniqueID = stakeInput->GetUniqueness();
CAmount nValueIn = stakeInput->GetValue();
for (int i = 0; i < nHashDrift; i++) //iterate the hashing
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25 changes: 12 additions & 13 deletions src/wallet.cpp
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Expand Up @@ -2114,9 +2114,15 @@ bool CWallet::SelectStakeCoins(std::list<std::unique_ptr<CStakeInput> >& listInp

//zPIV
if (GetBoolArg("-zpivstake", true) && chainActive.Height() > Params().Zerocoin_Block_V2_Start() && !IsSporkActive(SPORK_16_ZEROCOIN_MAINTENANCE_MODE)) {
//Add zPIV
set<CMintMeta> setMints = zpivTracker->ListMints(true, true, true);
//Only update zPIV set once per update interval
bool fUpdate = false;
static int64_t nTimeLastUpdate = 0;
if (GetAdjustedTime() - nTimeLastUpdate > nStakeSetUpdateTime) {
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Going from GetTime() to GetAdjustedTime() might be a real good change for some users.

fUpdate = true;
nTimeLastUpdate = GetAdjustedTime();
}

set<CMintMeta> setMints = zpivTracker->ListMints(true, true, fUpdate);
for (auto meta : setMints) {
if (meta.hashStake == 0) {
CZerocoinMint mint;
Expand Down Expand Up @@ -2943,16 +2949,10 @@ bool CWallet::CreateCoinStake(const CKeyStore& keystore, unsigned int nBits, int
if (nBalance > 0 && nBalance <= nReserveBalance)
return false;

// Initialize as static and don't update the set on every run of CreateCoinStake() in order to lighten resource use
static int nLastStakeSetUpdate = 0;
static list<std::unique_ptr<CStakeInput> > listInputs;
if (GetTime() - nLastStakeSetUpdate > nStakeSetUpdateTime) {
listInputs.clear();
if (!SelectStakeCoins(listInputs, nBalance - nReserveBalance))
return false;

nLastStakeSetUpdate = GetTime();
}
// Get the list of stakable inputs
std::list<std::unique_ptr<CStakeInput> > listInputs;
if (!SelectStakeCoins(listInputs, nBalance - nReserveBalance))
return false;

if (listInputs.empty())
return false;
Expand Down Expand Up @@ -3083,7 +3083,6 @@ bool CWallet::CreateCoinStake(const CKeyStore& keystore, unsigned int nBits, int
}

// Successfully generated coinstake
nLastStakeSetUpdate = 0; //this will trigger stake set to repopulate next round
return true;
}

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