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perf+sec: 15 improvements across consensus, DB, network, sync

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CONSENSUS SECURITY (main.cpp):
- Re-enable PoS kernel verification post-IBD (was unconditionally disabled)
- Re-enable coinstake reward validation post-IBD (was commented out)
- Re-enable anti-spam difficulty check (was if(false && ...))

SYNC PERFORMANCE (main.cpp):
- Batch address index writes in ConnectBlock (hundreds of DB ops → one per address)
- Throttle IBD printfs (per-block → per-10K-blocks or fDebug-gated)

DATABASE (txdb-rocksdb.cpp/h, txdb-base.cpp):
- Non-batched WriteRaw: WAL sync=false (was fsync per write)
- UTXO cache: FIFO eviction → true LRU with access-order tracking
- RocksDB memtable: 64MB → 256MB + max_write_buffer_number=4
- pendingBatch: std::map → std::unordered_map (O(log n) → O(1))
- max_open_files: 1000 → unlimited

NETWORK (net.cpp, netbase.cpp):
- TCP_NODELAY on all sockets (disable Nagle's algorithm)
- SO_KEEPALIVE on all sockets (faster dead-peer detection)
- Adaptive MilliSleep: 1ms during IBD, 10ms otherwise
- writev() scatter-gather I/O for send() coalescing (up to 16 msgs/syscall)
- O(1) CountInFlight counter (was O(n) scan of entire header map)
This commit is contained in:
Krystie
2026-06-27 18:17:59 -07:00
parent 34f65eb836
commit b623396186
7 changed files with 239 additions and 71 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/main.cpp
+80 -36
View File
@@ -337,8 +337,9 @@ bool AddOrphanTx(const CTransaction& tx)
for (const CTxIn& txin : tx.vin)
mapOrphanTransactionsByPrev[txin.prevout.hash].insert(hash);
printf("stored orphan tx %s (mapsz %" PRIszu ")\n", hash.ToString().substr(0,10).c_str(),
mapOrphanTransactions.size());
if (fDebug)
printf("stored orphan tx %s (mapsz %" PRIszu ")\n", hash.ToString().substr(0,10).c_str(),
mapOrphanTransactions.size());
return true;
}
@@ -2026,10 +2027,13 @@ bool CBlock::ConnectBlock(CTxDBBase& txdb, CBlockIndex* pindex, bool fJustCheck)
int64_t nCalculatedStakeReward = GetProofOfStakeReward(nCoinAge, nFees);
// TEMP: Skip coinstake reward check during sync — UTXO set incomplete causes nCalculatedStakeReward=0
// Will re-enable after full sync completes
// if (nStakeReward > nCalculatedStakeReward)
// return DoS(100, error("ConnectBlock() : coinstake pays too much(actual=%" PRId64 " vs calculated=%" PRId64 ")", nStakeReward, nCalculatedStakeReward));
// Enforce coinstake reward check only after IBD completes.
// During IBD the UTXO set is incomplete, causing nCalculatedStakeReward=0.
if (!IsInitialBlockDownload())
{
if (nStakeReward > nCalculatedStakeReward)
return DoS(100, error("ConnectBlock() : coinstake pays too much(actual=%" PRId64 " vs calculated=%" PRId64 ")", nStakeReward, nCalculatedStakeReward));
}
}
}
@@ -2085,6 +2089,11 @@ bool CBlock::ConnectBlock(CTxDBBase& txdb, CBlockIndex* pindex, bool fJustCheck)
// Update address index
if (fAddressIndex)
{
// Batch balance deltas: accumulate net change per address, then
// do a single read-modify-write per unique address at the end.
// This avoids hundreds of per-output DB reads/writes per block.
std::map<std::pair<int, uint160>, int64_t> mapBalanceDeltas;
for (unsigned int i = 0; i < vtx.size(); i++)
{
const CTransaction& tx = vtx[i];
@@ -2096,24 +2105,41 @@ bool CBlock::ConnectBlock(CTxDBBase& txdb, CBlockIndex* pindex, bool fJustCheck)
for (unsigned int j = 0; j < tx.vin.size(); j++)
{
const CTxIn& txin = tx.vin[j];
CTransaction txPrev;
CTxIndex txindex;
if (txdb.ReadDiskTx(txin.prevout.hash, txPrev, txindex))
bool fFoundPrevout = false;
// Check mapPendingUtxos first to avoid a DB hit for
// outputs created earlier in this same block.
auto itPending = mapPendingUtxos.find(txin.prevout);
if (itPending != mapPendingUtxos.end())
{
if (txin.prevout.n < txPrev.vout.size())
const CUtxoEntry& utxo = itPending->second;
int nType;
uint160 hashBytes;
if (GetAddressFromScript(utxo.scriptPubKey, nType, hashBytes))
{
const CTxOut& prevout = txPrev.vout[txin.prevout.n];
int nType;
uint160 hashBytes;
if (GetAddressFromScript(prevout.scriptPubKey, nType, hashBytes))
txdb.EraseAddressUtxo(nType, hashBytes, txin.prevout.hash, txin.prevout.n);
mapBalanceDeltas[std::make_pair(nType, hashBytes)] -= utxo.nValue;
}
fFoundPrevout = true;
}
// Fall back to reading the full transaction from disk
if (!fFoundPrevout)
{
CTransaction txPrev;
CTxIndex txindex;
if (txdb.ReadDiskTx(txin.prevout.hash, txPrev, txindex))
{
if (txin.prevout.n < txPrev.vout.size())
{
// Remove spent UTXO
txdb.EraseAddressUtxo(nType, hashBytes, txin.prevout.hash, txin.prevout.n);
// Decrease balance
int64_t nBalance = 0;
txdb.ReadAddressBalance(nType, hashBytes, nBalance);
nBalance -= prevout.nValue;
txdb.WriteAddressBalance(nType, hashBytes, nBalance);
const CTxOut& prevout = txPrev.vout[txin.prevout.n];
int nType;
uint160 hashBytes;
if (GetAddressFromScript(prevout.scriptPubKey, nType, hashBytes))
{
txdb.EraseAddressUtxo(nType, hashBytes, txin.prevout.hash, txin.prevout.n);
mapBalanceDeltas[std::make_pair(nType, hashBytes)] -= prevout.nValue;
}
}
}
}
@@ -2134,16 +2160,25 @@ bool CBlock::ConnectBlock(CTxDBBase& txdb, CBlockIndex* pindex, bool fJustCheck)
// Add new UTXO
txdb.WriteAddressUtxo(nType, hashBytes, txhash, k,
txout.nValue, pindex->nHeight, txout.scriptPubKey);
// Increase balance
int64_t nBalance = 0;
txdb.ReadAddressBalance(nType, hashBytes, nBalance);
nBalance += txout.nValue;
txdb.WriteAddressBalance(nType, hashBytes, nBalance);
// Accumulate balance increase (batched write at end)
mapBalanceDeltas[std::make_pair(nType, hashBytes)] += txout.nValue;
// Record tx in address history
txdb.WriteAddressTxId(nType, hashBytes, pindex->nHeight, i, txhash);
}
}
}
// Batch-write all accumulated balance changes: one read + one write
// per unique address instead of per-output.
for (const auto& entry : mapBalanceDeltas)
{
if (entry.second == 0)
continue;
int64_t nBalance = 0;
txdb.ReadAddressBalance(entry.first.first, entry.first.second, nBalance);
nBalance += entry.second;
txdb.WriteAddressBalance(entry.first.first, entry.first.second, nBalance);
}
}
// Update block index on disk without changing it in memory.
@@ -2946,12 +2981,20 @@ bool CBlock::AcceptBlock()
uint256 hashProofOfStake = 0, targetProofOfStake = 0;
if (IsProofOfStake())
{
// Skip expensive PoS kernel verification for blocks covered by hardcoded checkpoint.
// The checkpoint at height 2,186,940 already guarantees chain integrity.
// TEMP: Skip PoS kernel check during sync — read txPrev fails on incomplete index
// Will re-enable after full sync completes
printf("SKIP: PoS kernel check skipped for block %d during sync\n", nHeight);
hashProofOfStake = 0; targetProofOfStake = 0;
if (IsInitialBlockDownload())
{
// During IBD the UTXO set isn't fully loaded; CheckProofOfStake()
// would fail reading txPrev. Skip with a throttled log.
if (nHeight % 10000 == 0)
printf("SKIP: PoS kernel check skipped for block %d during IBD\n", nHeight);
hashProofOfStake = 0; targetProofOfStake = 0;
}
else
{
// Post-IBD: verify the PoS kernel signature normally.
if (!CheckProofOfStake(vtx[1], nBits, hashProofOfStake, targetProofOfStake))
return DoS(100, error("AcceptBlock() : check proof-of-stake failed for block %d", nHeight));
}
}
// Sync checkpoint enforcement is disabled:
@@ -3089,7 +3132,7 @@ bool ProcessBlock(CNode* pfrom, CBlock* pblock)
if (!pcheckpoint)
pcheckpoint = pindexBest;
if (false && pcheckpoint && pblock->hashPrevBlock != hashBestChain) // TEMP: disabled anti-spam check for sync
if (pcheckpoint && pblock->hashPrevBlock != hashBestChain)
{
int64_t deltaTime = pblock->GetBlockTime() - pcheckpoint->nTime;
CBigNum bnNewBlock;
@@ -3121,7 +3164,8 @@ bool ProcessBlock(CNode* pfrom, CBlock* pblock)
// If don't already have its previous block, shunt it off to holding area until we get it
if (!mapBlockIndex.count(pblock->hashPrevBlock))
{
printf("ProcessBlock: ORPHAN BLOCK, prev=%s\n", pblock->hashPrevBlock.ToString().substr(0,20).c_str());
if (fDebug)
printf("ProcessBlock: ORPHAN BLOCK, prev=%s\n", pblock->hashPrevBlock.ToString().substr(0,20).c_str());
std::unique_ptr<CBlock> pblock2 = std::make_unique<CBlock>(*pblock);
// triangles: check proof-of-stake
if (pblock2->IsProofOfStake())
@@ -3192,7 +3236,7 @@ bool ProcessBlock(CNode* pfrom, CBlock* pblock)
{
const unsigned int nQueued =
(g_syncManager.GetBestHeader() != 0) ? g_syncManager.QueueBlocksParallel() : 0;
if (nQueued > 0)
if (nQueued > 0 && fDebug)
printf("IBD-DIAG: queued %u more blocks from header planner after accepting %s\n",
nQueued, hash.ToString().substr(0,20).c_str());
@@ -3202,7 +3246,7 @@ bool ProcessBlock(CNode* pfrom, CBlock* pblock)
const unsigned int nRefilled = g_syncManager.RequestRefillAllPeers(
g_syncManager.GetBestHeader(), CSyncManager::HEADER_SYNC_REFILL_MIN_INTERVAL_SECONDS,
(nPlannerDepth == 0) ? "post-accept planner empty" : "post-accept planner low-water");
if (nRefilled > 0)
if (nRefilled > 0 && fDebug)
printf("IBD-DIAG: post-accept requested headers from %u peers at plannerDepth=%u after block %s\n",
nRefilled, nPlannerDepth, hash.ToString().substr(0,20).c_str());
}
src/net.cpp
+70 -8
View File
@@ -21,6 +21,8 @@
#ifdef WIN32
#include <string.h>
#else
#include <sys/uio.h>
#endif
#ifdef USE_UPNP
@@ -831,36 +833,96 @@ void SocketSendData(CNode *pnode)
std::deque<CSerializeData>::iterator it = pnode->vSendMsg.begin();
while (it != pnode->vSendMsg.end()) {
#ifndef WIN32
// Coalesce up to MAX_IOV queued messages into a single syscall using
// scatter-gather I/O. On Linux we use sendmsg() so we can pass
// MSG_NOSIGNAL | MSG_DONTWAIT; on other POSIX systems (e.g. BSD where
// SO_NOSIGPIPE is already set on the socket) we fall back to writev().
static const int MAX_IOV = 16;
struct iovec iov[MAX_IOV];
int iovcnt = 0;
std::deque<CSerializeData>::iterator batchEnd = it;
for (; batchEnd != pnode->vSendMsg.end() && iovcnt < MAX_IOV; ++batchEnd, ++iovcnt) {
const CSerializeData &data = *batchEnd;
size_t off = (batchEnd == it) ? pnode->nSendOffset : 0;
assert(data.size() > off);
iov[iovcnt].iov_base = const_cast<char*>(&data[off]);
iov[iovcnt].iov_len = data.size() - off;
}
if (iovcnt == 0)
break;
ssize_t nBytes;
#ifdef MSG_NOSIGNAL
struct msghdr msg;
memset(&msg, 0, sizeof(msg));
msg.msg_iov = iov;
msg.msg_iovlen = iovcnt;
nBytes = sendmsg(pnode->hSocket, &msg, MSG_NOSIGNAL | MSG_DONTWAIT);
#else
nBytes = writev(pnode->hSocket, iov, iovcnt);
#endif
if (nBytes > 0) {
pnode->nLastSend = GetTime();
pnode->nSendBytes += nBytes;
// Consume nBytes across the coalesced messages
while (it != batchEnd && nBytes > 0) {
const CSerializeData &data = *it;
size_t remaining = data.size() - pnode->nSendOffset;
if ((size_t)nBytes >= remaining) {
nBytes -= remaining;
pnode->nSendSize -= data.size();
pnode->nSendOffset = 0;
++it;
} else {
pnode->nSendOffset += nBytes;
nBytes = 0;
}
}
// Socket buffer full mid-batch — wait for next cycle
if (it != batchEnd)
break;
} else if (nBytes < 0) {
int nErr = WSAGetLastError();
if (nErr != WSAEWOULDBLOCK && nErr != WSAEMSGSIZE && nErr != WSAEINTR && nErr != WSAEINPROGRESS) {
printf("socket send error %d\n", nErr);
pnode->CloseSocketDisconnect();
}
break;
} else {
// nBytes == 0: peer closed
break;
}
#else
// Windows: individual send() calls
const CSerializeData &data = *it;
assert(data.size() > pnode->nSendOffset);
int nBytes = send(pnode->hSocket, &data[pnode->nSendOffset], data.size() - pnode->nSendOffset, MSG_NOSIGNAL | MSG_DONTWAIT);
if (nBytes > 0) {
pnode->nLastSend = GetTime();
pnode->nSendOffset += nBytes;
pnode->nSendBytes += nBytes;
if (pnode->nSendOffset == data.size()) {
pnode->nSendOffset = 0;
pnode->nSendSize -= data.size();
it++;
} else {
// could not send full message; stop sending more
break;
}
} else {
if (nBytes < 0) {
// error
int nErr = WSAGetLastError();
if (nErr != WSAEWOULDBLOCK && nErr != WSAEMSGSIZE && nErr != WSAEINTR && nErr != WSAEINPROGRESS)
{
if (nErr != WSAEWOULDBLOCK && nErr != WSAEMSGSIZE && nErr != WSAEINTR && nErr != WSAEINPROGRESS) {
printf("socket send error %d\n", nErr);
pnode->CloseSocketDisconnect();
}
}
// couldn't send anything at all
break;
}
#endif
}
if (it == pnode->vSendMsg.end()) {
@@ -1221,7 +1283,7 @@ void ThreadSocketHandler2(void* parg)
if (fShutdown)
return;
MilliSleep(10);
MilliSleep(IsInitialBlockDownload() ? 1 : 10);
}
}
src/netbase.cpp
+14
View File
@@ -10,6 +10,7 @@
#ifndef WIN32
#include <sys/fcntl.h>
#include <netinet/tcp.h>
#endif
#include <cstdlib>
@@ -457,6 +458,19 @@ bool static ConnectSocketDirectly(const CService &addrConnect, SOCKET& hSocketRe
}
}
// TCP_NODELAY: disable Nagle's algorithm for low-latency P2P messaging.
// SO_KEEPALIVE: detect dead connections faster (important for Tor/I2P
// tunnels that can silently drop without RST/FIN).
{
int one = 1;
#ifdef WIN32
setsockopt(hSocket, IPPROTO_TCP, TCP_NODELAY, (char*)&one, sizeof(one));
#else
setsockopt(hSocket, IPPROTO_TCP, TCP_NODELAY, &one, sizeof(one));
#endif
setsockopt(hSocket, SOL_SOCKET, SO_KEEPALIVE, (char*)&one, sizeof(one));
}
// this isn't even strictly necessary
// CNode::ConnectNode immediately turns the socket back to non-blocking
// but we'll turn it back to blocking just in case
src/syncmanager.cpp
+17 -8
View File
@@ -44,6 +44,11 @@ static const int HEADER_FRONT_MAX_AHEAD = 32768;
std::map<uint256, CSyncManager::HeaderNode> mapHeaders;
uint256 hashBestHeader = 0;
int64_t nLastNewHeaderTime = 0;
// O(1) in-flight counter — replaces the O(n) scan in CountInFlight().
// Incremented when fRequested transitions false→true; decremented when an
// entry with fRequested==true is erased from mapHeaders.
static size_t g_nInFlight = 0;
}
CSyncManager g_syncManager;
@@ -151,6 +156,8 @@ void CSyncManager::PruneHeaders()
if (it->second.nHeight > nProtectFloor &&
nNow - it->second.nInsertTime >= HEADER_SYNC_TTL_MICROS)
{
if (it->second.fRequested)
--g_nInFlight;
it = mapHeaders.erase(it);
++nEvicted;
}
@@ -188,7 +195,11 @@ void CSyncManager::PruneHeaders()
const size_t nTarget = (size_t)MAX_HEADER_SYNC_CACHE * 3 / 4;
size_t i = 0;
while (mapHeaders.size() > nTarget && i < vEvictable.size())
{
if (vEvictable[i]->second.fRequested)
--g_nInFlight;
mapHeaders.erase(vEvictable[i++]);
}
RecomputeBestHeader();
}
@@ -287,14 +298,7 @@ bool CSyncManager::PathReachesChain(const std::vector<uint256>& vPath) const
unsigned int CSyncManager::CountInFlight() const
{
const int64_t nNow = GetTime() * 1000000;
unsigned int nInFlight = 0;
for (std::map<uint256, HeaderNode>::const_iterator it = mapHeaders.begin(); it != mapHeaders.end(); ++it)
{
if (it->second.fRequested && nNow - it->second.nLastRequestTime < HEADER_REQUEST_TIMEOUT_MICROS)
++nInFlight;
}
return nInFlight;
return (unsigned int)g_nInFlight;
}
unsigned int CSyncManager::GetPlannerDepth() const
@@ -331,6 +335,8 @@ void CSyncManager::BlockAccepted(const uint256& hashBlock)
if (mi == mapHeaders.end())
return;
if (mi->second.fRequested)
--g_nInFlight;
mapHeaders.erase(mi);
if (hashBestHeader == hashBlock)
RecomputeBestHeader();
@@ -602,7 +608,10 @@ unsigned int CSyncManager::QueueBlocksParallel(unsigned int nWindow)
if (!mi->second.fRequested || nNow - mi->second.nLastRequestTime >= HEADER_REQUEST_TIMEOUT_MICROS)
{
if (!mi->second.fRequested)
{
mi->second.nFirstRequestTime = nNow;
++g_nInFlight;
}
mi->second.fRequested = true;
mi->second.nLastRequestTime = nNow;
}
src/txdb-base.cpp
+42 -14
View File
@@ -9,6 +9,7 @@
#include "main.h"
#include "sync.h"
#include <list>
#include <unordered_map>
using namespace std;
@@ -320,14 +321,42 @@ struct COutPointHasher {
struct CUtxoCacheEntry {
CUtxoEntry utxo;
bool fPresent; // true = exists, false = known absent (negative cache)
std::list<COutPoint>::iterator lruIt; // Position in g_utxoLruList
CUtxoCacheEntry() : fPresent(false) {}
CUtxoCacheEntry(const CUtxoEntry& u, bool p) : utxo(u), fPresent(p) {}
};
// Access-order list for LRU eviction. Front = most recently used, back = LRU.
std::list<COutPoint> g_utxoLruList;
std::unordered_map<COutPoint, CUtxoCacheEntry, COutPointHasher> g_mapUtxoCache;
CCriticalSection g_cs_utxoCache;
const size_t UTXO_CACHE_MAX_ENTRIES = 2000000; // ~400MB at ~200 bytes each
// Promote an existing cache entry to most-recently-used.
inline void TouchUtxoEntry(
std::unordered_map<COutPoint, CUtxoCacheEntry, COutPointHasher>::iterator it)
{
g_utxoLruList.splice(g_utxoLruList.begin(), g_utxoLruList, it->second.lruIt);
}
// Insert or update a cache entry, promoting to most-recently-used.
inline void PutUtxoCacheEntry(const COutPoint& outpoint,
const CUtxoEntry& utxo, bool fPresent)
{
auto it = g_mapUtxoCache.find(outpoint);
if (it != g_mapUtxoCache.end()) {
it->second.utxo = utxo;
it->second.fPresent = fPresent;
g_utxoLruList.splice(g_utxoLruList.begin(), g_utxoLruList, it->second.lruIt);
} else {
g_utxoLruList.push_front(outpoint);
CUtxoCacheEntry& e = g_mapUtxoCache[outpoint];
e.utxo = utxo;
e.fPresent = fPresent;
e.lruIt = g_utxoLruList.begin();
}
}
} // anonymous namespace
bool CTxDBBase::ReadUtxo(const uint256& hash, unsigned int n, CUtxoEntry& entry)
@@ -340,6 +369,7 @@ bool CTxDBBase::ReadUtxo(const uint256& hash, unsigned int n, CUtxoEntry& entry)
auto it = g_mapUtxoCache.find(outpoint);
if (it != g_mapUtxoCache.end())
{
TouchUtxoEntry(it);
if (it->second.fPresent) {
entry = it->second.utxo;
return true;
@@ -353,12 +383,7 @@ bool CTxDBBase::ReadUtxo(const uint256& hash, unsigned int n, CUtxoEntry& entry)
{
LOCK(g_cs_utxoCache);
if (g_mapUtxoCache.size() < UTXO_CACHE_MAX_ENTRIES)
{
if (fFound)
g_mapUtxoCache[outpoint] = CUtxoCacheEntry(entry, true);
else
g_mapUtxoCache[outpoint] = CUtxoCacheEntry(CUtxoEntry(), false);
}
PutUtxoCacheEntry(outpoint, entry, fFound);
}
return fFound;
@@ -370,16 +395,17 @@ bool CTxDBBase::WriteUtxo(const uint256& hash, unsigned int n, const CUtxoEntry&
{
LOCK(g_cs_utxoCache);
g_mapUtxoCache[outpoint] = CUtxoCacheEntry(entry, true);
PutUtxoCacheEntry(outpoint, entry, true);
// Periodic eviction: clear half when over the limit. Simple but
// effective — the cache repopulates with the hot working set.
// LRU eviction: evict least-recently-used entries when over the limit.
if (g_mapUtxoCache.size() > UTXO_CACHE_MAX_ENTRIES)
{
size_t nTarget = UTXO_CACHE_MAX_ENTRIES / 2;
auto it = g_mapUtxoCache.begin();
while (g_mapUtxoCache.size() > nTarget && it != g_mapUtxoCache.end())
it = g_mapUtxoCache.erase(it);
while (g_mapUtxoCache.size() > nTarget)
{
g_mapUtxoCache.erase(g_utxoLruList.back());
g_utxoLruList.pop_back();
}
}
}
@@ -392,7 +418,7 @@ bool CTxDBBase::EraseUtxo(const uint256& hash, unsigned int n)
{
LOCK(g_cs_utxoCache);
g_mapUtxoCache[outpoint] = CUtxoCacheEntry(CUtxoEntry(), false);
PutUtxoCacheEntry(outpoint, CUtxoEntry(), false);
}
return Erase(make_pair(string("u"), make_pair(hash, n)));
@@ -405,8 +431,10 @@ bool CTxDBBase::HaveUtxo(const uint256& hash, unsigned int n)
{
LOCK(g_cs_utxoCache);
auto it = g_mapUtxoCache.find(outpoint);
if (it != g_mapUtxoCache.end())
if (it != g_mapUtxoCache.end()) {
TouchUtxoEntry(it);
return it->second.fPresent;
}
}
if (Exists(make_pair(string("u"), make_pair(hash, n))))
src/txdb-rocksdb.cpp
+13 -3
View File
@@ -32,6 +32,15 @@ namespace fs = std::filesystem;
// the same way the LevelDB backend shares its txdb singleton.
static rocksdb::DB* g_rocksdb = nullptr;
// Non-batched writes bypass WAL fsync. The TxnCommit path handles durability;
// crash recovery replays from block files anyway. Default WriteOptions may
// vary across RocksDB versions, so we pin sync=false explicitly.
static const rocksdb::WriteOptions g_fastWriteOpts = []{
rocksdb::WriteOptions wo;
wo.sync = false;
return wo;
}();
namespace {
// rocksdb::DB::Open shipped a raw DB** overload for years; newer releases
@@ -71,8 +80,9 @@ static rocksdb::Options GetRocksOptions()
rocksdb::Options opts;
opts.create_if_missing = false;
opts.compression = rocksdb::kSnappyCompression;
opts.max_open_files = 1000;
opts.write_buffer_size = 64 * 1048576;
opts.max_open_files = -1;
opts.write_buffer_size = 256 * 1048576;
opts.max_write_buffer_number = 4;
opts.IncreaseParallelism(); // Multi-threaded compaction.
opts.OptimizeLevelStyleCompaction(); // Sensible defaults for a LSM workload.
@@ -263,7 +273,7 @@ bool CRocksTxDB::WriteRaw(const std::string& key, const std::string& value)
pendingBatch[key] = value;
return true;
}
rocksdb::Status status = pdb->Put(rocksdb::WriteOptions(), key, value);
rocksdb::Status status = pdb->Put(g_fastWriteOpts, key, value);
if (!status.ok()) {
printf("RocksDB write failure: %s\n", status.ToString().c_str());
return false;
src/txdb-rocksdb.h
+2 -1
View File
@@ -10,6 +10,7 @@
#include <map>
#include <optional>
#include <string>
#include <unordered_map>
#include <rocksdb/db.h>
#include <rocksdb/options.h>
@@ -76,7 +77,7 @@ private:
// active batch?" without iterating the WriteBatch via Handler — Ubuntu's
// librocksdb-dev hides typeinfo for rocksdb::WriteBatch::Handler so a
// subclass-based scan fails to link there.
std::map<std::string, std::optional<std::string>> pendingBatch;
std::unordered_map<std::string, std::optional<std::string>> pendingBatch;
bool ScanBatch(const std::string& key, std::string* value, bool* deleted) const;
};