From 06049989582689a1373376df36a54d27cb38f84a Mon Sep 17 00:00:00 2001
From: Dennis E <git@destenson.digital>
Date: Wed, 28 Nov 2018 09:36:05 -0800
Subject: [PATCH] Disables fsync in db operations

Disabling fsync can greatly reduce the amount of unneccessary serialization of filesystem operations.
---
 ethdb/database.go | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/ethdb/database.go b/ethdb/database.go
index 6c62d6a386..f7b731e6ef 100644
--- a/ethdb/database.go
+++ b/ethdb/database.go
@@ -78,6 +78,7 @@ func NewLDBDatabase(file string, cache int, handles int) (*LDBDatabase, error) {
 		BlockCacheCapacity:     cache / 2 * opt.MiB,
 		WriteBuffer:            cache / 4 * opt.MiB, // Two of these are used internally
 		Filter:                 filter.NewBloomFilter(10),
+		NoSync:                 true,
 	})
 	if _, corrupted := err.(*errors.ErrCorrupted); corrupted {
 		db, err = leveldb.RecoverFile(file, nil)
@@ -371,7 +372,9 @@ func (b *ldbBatch) Delete(key []byte) error {
 }
 
 func (b *ldbBatch) Write() error {
-	return b.db.Write(b.b, nil)
+	return b.db.Write(b.b, &opt.WriteOptions{
+		Sync: false,
+	})
 }
 
 func (b *ldbBatch) ValueSize() int {