set all pebble DB's to 2k handles, set process RLimit

claimtrie/block/blockrepo/pebble.go

@@ -16,7 +16,7 @@ type Pebble struct {
 
 func NewPebble(path string) (*Pebble, error) {
 
-	db, err := pebble.Open(path, nil)
+	db, err := pebble.Open(path, &pebble.Options{MaxOpenFiles: 2000})
 	repo := &Pebble{db: db}
 
 	return repo, errors.Wrapf(err, "unable to open %s", path)

claimtrie/chain/chainrepo/pebble.go

@@ -17,7 +17,7 @@ type Pebble struct {
 
 func NewPebble(path string) (*Pebble, error) {
 
-	db, err := pebble.Open(path, &pebble.Options{BytesPerSync: 64 << 20})
+	db, err := pebble.Open(path, &pebble.Options{BytesPerSync: 64 << 20, MaxOpenFiles: 2000})
 	repo := &Pebble{db: db}
 
 	return repo, errors.Wrapf(err, "open %s", path)

claimtrie/config/config.go

@@ -2,11 +2,33 @@ package config
 
 import (
 	"path/filepath"
+	"syscall"
 
 	"github.com/lbryio/lbcd/claimtrie/param"
 	btcutil "github.com/lbryio/lbcutil"
 )
 
+func init() {
+	// ensure that we have enough file handles
+	var rLimit syscall.Rlimit
+	err := syscall.Getrlimit(syscall.RLIMIT_NOFILE, &rLimit)
+	if err != nil {
+		panic("Error getting File Handle RLimit: " + err.Error())
+	}
+	minRequiredFileHandles := uint64(24000) // seven databases and they each require ~2000, plus a few more to be safe
+	if rLimit.Max < minRequiredFileHandles {
+		panic("Error increasing File Handle RLimit: increasing file handle limit requires " +
+			"unavailable privileges. Allow at least 24000 handles.")
+	}
+	if rLimit.Cur < minRequiredFileHandles {
+		rLimit.Cur = minRequiredFileHandles
+		err := syscall.Setrlimit(syscall.RLIMIT_NOFILE, &rLimit)
+		if err != nil {
+			panic("Error setting File Handle RLimit to 24000: " + err.Error())
+		}
+	}
+}
+
 var DefaultConfig = Config{
 	Params: param.MainNet,
 

claimtrie/merkletrie/merkletrierepo/pebble.go

@@ -31,7 +31,7 @@ func NewPebble(path string) (*Pebble, error) {
 	//	}
 	//}()
 
-	db, err := pebble.Open(path, &pebble.Options{Cache: cache, BytesPerSync: 32 << 20})
+	db, err := pebble.Open(path, &pebble.Options{Cache: cache, BytesPerSync: 32 << 20, MaxOpenFiles: 2000})
 	repo := &Pebble{db: db}
 
 	return repo, errors.Wrapf(err, "unable to open %s", path)

claimtrie/node/noderepo/pebble.go

@@ -15,7 +15,7 @@ type Pebble struct {
 
 func NewPebble(path string) (*Pebble, error) {
 
-	db, err := pebble.Open(path, &pebble.Options{Cache: pebble.NewCache(64 << 20), BytesPerSync: 4 << 20})
+	db, err := pebble.Open(path, &pebble.Options{Cache: pebble.NewCache(64 << 20), BytesPerSync: 8 << 20, MaxOpenFiles: 2000})
 	repo := &Pebble{db: db}
 
 	return repo, errors.Wrapf(err, "unable to open %s", path)

claimtrie/temporal/temporalrepo/pebble.go

@@ -15,7 +15,7 @@ type Pebble struct {
 
 func NewPebble(path string) (*Pebble, error) {
 
-	db, err := pebble.Open(path, &pebble.Options{Cache: pebble.NewCache(16 << 20)})
+	db, err := pebble.Open(path, &pebble.Options{Cache: pebble.NewCache(16 << 20), MaxOpenFiles: 2000})
 	repo := &Pebble{db: db}
 
 	return repo, errors.Wrapf(err, "unable to open %s", path)

database/ffldb/blockio.go

@@ -37,7 +37,7 @@ const (
 	// maxOpenFiles is the max number of open files to maintain in the
 	// open blocks cache.  Note that this does not include the current
 	// write file, so there will typically be one more than this value open.
-	maxOpenFiles = 25
+	maxOpenFiles = 40
 
 	// maxBlockFileSize is the maximum size for each file used to store
 	// blocks.

database/ffldb/db.go

@@ -2005,6 +2005,7 @@ func openDB(dbPath string, network wire.BitcoinNet, create bool) (database.DB, e
 		Strict:                 opt.DefaultStrict,
 		Compression:            opt.NoCompression,
 		Filter:                 filter.NewBloomFilter(10),
+		OpenFilesCacheCapacity: 2000,
 	}
 	ldb, err := leveldb.OpenFile(metadataDbPath, &opts)
 	if err != nil {