Merge pull request #2228 from karalabe/allocate-cache-to-chaindata

cmd, eth, ethdb, node: prioritise chaindata for resources, bump cache

2 files changed, 5 insertions, 8 deletions

diff --git a/eth/backend.go b/eth/backend.go
index f62ee976d..d807f8ae8 100644
--- a/eth/backend.go
+++ b/eth/backend.go
@@ -69,6 +69,7 @@ type Config struct {
 	BlockChainVersion  int
 	SkipBcVersionCheck bool // e.g. blockchain export
 	DatabaseCache      int
+	DatabaseHandles    int
 
 	NatSpec   bool
 	DocRoot   string
@@ -135,12 +136,8 @@ type Ethereum struct {
 }
 
 func New(ctx *node.ServiceContext, config *Config) (*Ethereum, error) {
-	// Let the database take 3/4 of the max open files (TODO figure out a way to get the actual limit of the open files)
-	const dbCount = 3
-	ethdb.OpenFileLimit = 128 / (dbCount + 1)
-
 	// Open the chain database and perform any upgrades needed
-	chainDb, err := ctx.OpenDatabase("chaindata", config.DatabaseCache)
+	chainDb, err := ctx.OpenDatabase("chaindata", config.DatabaseCache, config.DatabaseHandles)
 	if err != nil {
 		return nil, err
 	}
@@ -154,7 +151,7 @@ func New(ctx *node.ServiceContext, config *Config) (*Ethereum, error) {
 		return nil, err
 	}
 
-	dappDb, err := ctx.OpenDatabase("dapp", config.DatabaseCache)
+	dappDb, err := ctx.OpenDatabase("dapp", config.DatabaseCache, config.DatabaseHandles)
 	if err != nil {
 		return nil, err
 	}
diff --git a/eth/filters/filter_test.go b/eth/filters/filter_test.go
index 5772114b3..b98945bbd 100644
--- a/eth/filters/filter_test.go
+++ b/eth/filters/filter_test.go
@@ -31,7 +31,7 @@ func BenchmarkMipmaps(b *testing.B) {
 	defer os.RemoveAll(dir)
 
 	var (
-		db, _   = ethdb.NewLDBDatabase(dir, 16)
+		db, _   = ethdb.NewLDBDatabase(dir, 0, 0)
 		key1, _ = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291")
 		addr1   = crypto.PubkeyToAddress(key1.PublicKey)
 		addr2   = common.BytesToAddress([]byte("jeff"))
@@ -105,7 +105,7 @@ func TestFilters(t *testing.T) {
 	defer os.RemoveAll(dir)
 
 	var (
-		db, _   = ethdb.NewLDBDatabase(dir, 16)
+		db, _   = ethdb.NewLDBDatabase(dir, 0, 0)
 		key1, _ = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291")
 		addr    = crypto.PubkeyToAddress(key1.PublicKey)