diff options
Diffstat (limited to 'cmd/utils/flags.go')
| -rw-r--r-- | cmd/utils/flags.go | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/cmd/utils/flags.go b/cmd/utils/flags.go index 3efb65e42..69fb0b9db 100644 --- a/cmd/utils/flags.go +++ b/cmd/utils/flags.go @@ -143,7 +143,7 @@ var ( CacheFlag = cli.IntFlag{ Name: "cache", Usage: "Megabytes of memory allocated to internal caching (min 16MB / database forced)", - Value: 0, + Value: 128, } BlockchainVersionFlag = cli.IntFlag{ Name: "blockchainversion", @@ -527,6 +527,22 @@ func MakeGenesisBlock(ctx *cli.Context) string { return string(data) } +// MakeDatabaseHandles raises out the number of allowed file handles per process +// for Geth and returns half of the allowance to assign to the database. +func MakeDatabaseHandles() int { + if err := raiseFdLimit(2048); err != nil { + Fatalf("Failed to raise file descriptor allowance: %v", err) + } + limit, err := getFdLimit() + if err != nil { + Fatalf("Failed to retrieve file descriptor allowance: %v", err) + } + if limit > 2048 { // cap database file descriptors even if more is available + limit = 2048 + } + return limit / 2 // Leave half for networking and other stuff +} + // MakeAccountManager creates an account manager from set command line flags. func MakeAccountManager(ctx *cli.Context) *accounts.Manager { // Create the keystore crypto primitive, light if requested @@ -649,6 +665,7 @@ func MakeSystemNode(name, version string, extra []byte, ctx *cli.Context) *node. FastSync: ctx.GlobalBool(FastSyncFlag.Name), BlockChainVersion: ctx.GlobalInt(BlockchainVersionFlag.Name), DatabaseCache: ctx.GlobalInt(CacheFlag.Name), + DatabaseHandles: MakeDatabaseHandles(), NetworkId: ctx.GlobalInt(NetworkIdFlag.Name), AccountManager: accman, Etherbase: MakeEtherbase(accman, ctx), @@ -763,9 +780,10 @@ func SetupVM(ctx *cli.Context) { func MakeChain(ctx *cli.Context) (chain *core.BlockChain, chainDb ethdb.Database) { datadir := MustMakeDataDir(ctx) cache := ctx.GlobalInt(CacheFlag.Name) + handles := MakeDatabaseHandles() var err error - if chainDb, err = ethdb.NewLDBDatabase(filepath.Join(datadir, "chaindata"), cache); err != nil { + if chainDb, err = ethdb.NewLDBDatabase(filepath.Join(datadir, "chaindata"), cache, handles); err != nil { Fatalf("Could not open database: %v", err) } if ctx.GlobalBool(OlympicFlag.Name) { |