Perf improvements

cardano-db-sync/src/Cardano/DbSync/Api.hs

@@ -320,12 +320,12 @@ mkSyncEnv metricSetters trce dbEnv syncOptions protoInfo nw nwMagic systemStart
         newEmptyCache
           CacheCapacity
             { cacheCapacityAddress = 50000
-            , cacheCapacityStake = 50000
+            , cacheCapacityStake = 150000
             , cacheCapacityDatum = 125000
             , cacheCapacityMultiAsset = 125000
             , cacheCapacityTx = 50000
             , cacheOptimisePools = 50000
-            , cacheOptimiseStake = 50000
+            , cacheOptimiseStake = 150000
             }
       else pure useNoCache
   consistentLevelVar <- newTVarIO Unchecked

cardano-db-sync/src/Cardano/DbSync/Api/Ledger.hs

@@ -29,6 +29,7 @@ import Numeric
 import Ouroboros.Consensus.Cardano.Block hiding (CardanoBlock)
 import Ouroboros.Consensus.Ledger.Extended (ExtLedgerState, ledgerState)
 import qualified Ouroboros.Consensus.Shelley.Ledger.Ledger as Consensus
+import System.Mem (performMinorGC)
 
 import qualified Cardano.Db as DB
 import Cardano.DbSync.Api
@@ -132,6 +133,7 @@ storePage syncEnv percQuantum (n, ls) = do
   txOutIds <- lift $ DB.insertBulkTxOut False $ etoTxOut . fst <$> txOuts
   let maTxOuts = concatMap (mkmaTxOuts txOutVariantType) $ zip txOutIds (snd <$> txOuts)
   void . lift $ DB.insertBulkMaTxOutPiped [maTxOuts]
+  liftIO performMinorGC
   where
     txOutVariantType = getTxOutVariantType syncEnv
     trce = getTrace syncEnv

cardano-db-sync/src/Cardano/DbSync/Cache.hs

@@ -192,9 +192,16 @@ queryStakeAddrWithCacheRetBs syncEnv cacheUA ra@(Ledger.RewardAccount _ cred) =
             case queryRes of
               Nothing -> pure queryRes
               Just stakeAddrsId -> do
-                let !stakeCache' = case cacheUA of
+                let stable = scStableCache stakeCache
+                    maxSize = 150000
+                    trimSize = 145000 -- Trim to 145k when hitting 150k (less aggressive, better hit rate)
+                    trimmedStable =
+                      if Map.size stable >= maxSize
+                        then Map.fromList $ take trimSize $ Map.toList stable
+                        else stable
+                    !stakeCache' = case cacheUA of
                       UpdateCache -> stakeCache {scLruCache = LRU.insert cred stakeAddrsId (scLruCache stakeCache)}
-                      UpdateCacheStrong -> stakeCache {scStableCache = Map.insert cred stakeAddrsId (scStableCache stakeCache)}
+                      UpdateCacheStrong -> stakeCache {scStableCache = Map.insert cred stakeAddrsId trimmedStable}
                       _otherwise -> stakeCache
                 liftIO $
                   atomically $

cardano-db-sync/src/Cardano/DbSync/Era/Universal/Block.hs

@@ -64,8 +64,8 @@ insertBlockUniversal ::
 insertBlockUniversal syncEnv shouldLog withinTwoMins withinHalfHour blk details isMember applyResult = do
   -- if we're syncing within 2 mins of the tip, we clean certain caches for tip following.
   when (isSyncedWithintwoMinutes details) $ cleanCachesForTip cache
-  -- Optimise caches every 100k blocks to prevent unbounded growth
-  when (unBlockNo (Generic.blkBlockNo blk) `mod` 100000 == 0) $ optimiseCaches cache
+  -- Optimise caches every 50k blocks to prevent unbounded growth
+  when (unBlockNo (Generic.blkBlockNo blk) `mod` 50000 == 0) $ optimiseCaches cache
   do
     pbid <- case Generic.blkPreviousHash blk of
       Nothing -> liftDbLookup mkSyncNodeCallStack $ DB.queryGenesis $ renderErrorMessage (Generic.blkEra blk) -- this is for networks that fork from Byron on epoch 0.

cardano-db-sync/src/Cardano/DbSync/Era/Universal/Epoch.hs

@@ -39,6 +39,7 @@ import Cardano.Ledger.Conway.PParams (DRepVotingThresholds (..))
 import Cardano.Ledger.Conway.Rules (RatifyState (..))
 import Cardano.Prelude
 import Cardano.Slotting.Slot (EpochNo (..), SlotNo)
+import System.Mem (performMinorGC)
 
 import qualified Cardano.Db as DB
 import Cardano.DbSync.Api
@@ -222,6 +223,8 @@ insertEpochStake syncEnv nw epochNo stakeChunk = do
 
   -- minimising the bulk inserts into hundred thousand chunks to improve performance with pipeline
   lift $ DB.insertBulkEpochStakePiped dbConstraintEpochStake chunckDbStakes
+
+  liftIO performMinorGC
   where
     mkStake ::
       (StakeCred, (Shelley.Coin, PoolKeyHash)) ->
@@ -252,6 +255,8 @@ insertRewards syncEnv nw earnedEpoch spendableEpoch rewardsChunk = do
   let chunckDbRewards = DB.chunkForBulkQuery (Proxy @DB.Reward) Nothing dbRewards
   -- minimising the bulk inserts into hundred thousand chunks to improve performance with pipeline
   lift $ DB.insertBulkRewardsPiped dbConstraintRewards chunckDbRewards
+
+  liftIO performMinorGC
   where
     mkRewards ::
       (StakeCred, Set Generic.Reward) ->

cardano-db-sync/src/Cardano/DbSync/Era/Universal/Insert/GovAction.hs

@@ -66,6 +66,7 @@ import qualified Data.ByteString.Lazy.Char8 as LBS
 import qualified Data.Map.Strict as Map
 import qualified Data.Text.Encoding as Text
 import Ouroboros.Consensus.Cardano.Block (ConwayEra)
+import System.Mem (performMinorGC)
 
 insertGovActionProposal ::
   SyncEnv ->
@@ -383,6 +384,7 @@ insertDrepDistr e pSnapshot = do
   allDrepDistrs <- mapM processChunk drepChunks
   -- Insert all chunks in a single pipeline operation
   lift $ DB.insertBulkDrepDistrPiped allDrepDistrs
+  liftIO performMinorGC
   where
     processChunk = mapM mkEntry
 

cardano-db-sync/src/Cardano/DbSync/Ledger/State.hs

@@ -63,6 +63,7 @@ import Cardano.Slotting.Slot (
   at,
   fromWithOrigin,
  )
+import Codec.CBOR.Write (toBuilder)
 import Control.Concurrent.Class.MonadSTM.Strict (
   atomically,
   newTVarIO,
@@ -80,6 +81,7 @@ import Cardano.Ledger.BaseTypes (StrictMaybe)
 import Cardano.Ledger.Conway.Core as Shelley
 import Cardano.Ledger.Conway.Governance
 import qualified Cardano.Ledger.Conway.Governance as Shelley
+import qualified Data.ByteString.Builder as Builder
 import qualified Data.ByteString.Char8 as BS
 import qualified Data.ByteString.Lazy.Char8 as LBS
 import qualified Data.ByteString.Short as SBS
@@ -132,6 +134,7 @@ import Ouroboros.Network.Block (HeaderHash, Point (..), blockNo)
 import qualified Ouroboros.Network.Point as Point
 import System.Directory (doesFileExist, listDirectory, removeFile)
 import System.FilePath (dropExtension, takeExtension, (</>))
+import qualified System.IO as IO
 import System.Mem (performMajorGC)
 import Prelude (String, id)
 
@@ -380,25 +383,24 @@ ledgerStateWriteLoop tracer swQueue codecConfig =
     writeLedgerStateFile :: FilePath -> CardanoLedgerState -> IO ()
     writeLedgerStateFile file ledger = do
       startTime <- getCurrentTime
-      -- TODO: write the builder directly.
-      -- BB.writeFile file $ toBuilder $
-      LBS.writeFile file $
-        Serialize.serialize $
-          encodeCardanoLedgerState
-            ( Consensus.encodeExtLedgerState
-                (encodeDisk codecConfig)
-                (encodeDisk codecConfig)
-                (encodeDisk codecConfig)
-            )
-            ledger
+      -- Use streaming builder to avoid loading entire state into memory
+      IO.withBinaryFile file IO.WriteMode $ \h -> do
+        let encoding =
+              encodeCardanoLedgerState
+                ( Consensus.encodeExtLedgerState
+                    (encodeDisk codecConfig)
+                    (encodeDisk codecConfig)
+                    (encodeDisk codecConfig)
+                )
+                ledger
+        Builder.hPutBuilder h (toBuilder encoding)
       endTime <- getCurrentTime
       logInfo tracer $
         mconcat
           [ "Asynchronously wrote a ledger snapshot to "
           , Text.pack file
           , " in "
           , textShow (diffUTCTime endTime startTime)
-          , "."
           ]
 
 mkLedgerStateFilename :: LedgerStateDir -> ExtLedgerState CardanoBlock -> Maybe EpochNo -> WithOrigin FilePath
@@ -643,12 +645,13 @@ loadLedgerStateFromFile tracer config delete point lsf = do
     safeReadFile :: FilePath -> IO (Either Text CardanoLedgerState)
     safeReadFile fp = do
       startTime <- getCurrentTime
-      mbs <- Exception.try $ BS.readFile fp
+      -- Use lazy ByteString to enable streaming read
+      mbs <- Exception.try $ LBS.readFile fp
       case mbs of
         Left (err :: IOException) -> pure $ Left (Text.pack $ displayException err)
-        Right bs -> do
+        Right lbs -> do
           mediumTime <- getCurrentTime
-          case decode bs of
+          case decode lbs of
             Left err -> pure $ Left $ textShow err
             Right ls -> do
               endTime <- getCurrentTime
@@ -658,7 +661,7 @@ loadLedgerStateFromFile tracer config delete point lsf = do
                   , renderPoint point
                   , ". It took "
                   , textShow (diffUTCTime mediumTime startTime)
-                  , " to read from disk and "
+                  , " to read from disk (streaming) and "
                   , textShow (diffUTCTime endTime mediumTime)
                   , " to parse."
                   ]
@@ -667,12 +670,11 @@ loadLedgerStateFromFile tracer config delete point lsf = do
     codecConfig :: CodecConfig CardanoBlock
     codecConfig = configCodec config
 
-    decode :: ByteString -> Either DecoderError CardanoLedgerState
-    decode = do
+    decode :: LBS.ByteString -> Either DecoderError CardanoLedgerState
+    decode =
       Serialize.decodeFullDecoder
         "Ledger state file"
         decodeState
-        . LBS.fromStrict
 
     decodeState :: (forall s. Decoder s CardanoLedgerState)
     decodeState =

cardano-db-sync/src/Cardano/DbSync/Ledger/Types.hs

@@ -59,7 +59,7 @@ import Prelude (fail, id)
 --------------------------------------------------------------------------
 
 data HasLedgerEnv = HasLedgerEnv
-  { leTrace :: Trace IO Text
+  { leTrace :: !(Trace IO Text)
   , leUseLedger :: !Bool
   , leHasRewards :: !Bool
   , leProtocolInfo :: !(Consensus.ProtocolInfo CardanoBlock)

cardano-db-sync/src/Cardano/DbSync/LocalStateQuery.hs

@@ -55,7 +55,7 @@ import qualified Ouroboros.Network.Protocol.LocalStateQuery.Client as StateQuery
 import Ouroboros.Network.Protocol.LocalStateQuery.Type (AcquireFailure, Target (..))
 
 data NoLedgerEnv = NoLedgerEnv
-  { nleTracer :: Trace IO Text
+  { nleTracer :: !(Trace IO Text)
   , nleSystemStart :: !SystemStart
   , nleQueryVar :: StateQueryTMVar CardanoBlock CardanoInterpreter
   , nleHistoryInterpreterVar :: StrictTVar IO (Strict.Maybe CardanoInterpreter)