From 9b3456d86e3f722063829b0a0de00ec77938a4d2 Mon Sep 17 00:00:00 2001
From: Alexey Akhunov <akhounov@gmail.com>
Date: Tue, 10 Jul 2018 10:13:34 +0100
Subject: [PATCH 1/2] Flag to specify a different blockchain file, switch to
 levelDB backend

---
 main.go | 15 ++++++++-------
 1 file changed, 8 insertions(+), 7 deletions(-)

diff --git a/main.go b/main.go
index d36538fc..bef6f3af 100644
--- a/main.go
+++ b/main.go
@@ -27,6 +27,7 @@ import (
 )
 
 var cpuprofile = flag.String("cpuprofile", "", "write cpu profile `file`")
+var blockchain = flag.String("blockchain", "blockchain", "file containing blocks to load")
 
 var (
 	// TODO: Document...
@@ -50,8 +51,8 @@ func main() {
         defer pprof.StopCPUProfile()
     }
 
-    stateDB := dbm.NewDB("state", dbm.MemDBBackend, "")
-	codeDB := dbm.NewDB("code", dbm.MemDBBackend, "")
+    stateDB := dbm.NewDB("state", dbm.LevelDBBackend, "")
+	codeDB := dbm.NewDB("code", dbm.LevelDBBackend, "")
 
 	ethermintDB, err := state.NewDatabase(stateDB, codeDB)
 	if err != nil {
@@ -94,7 +95,7 @@ func main() {
 	// command.
 	//
 	// TODO: Allow this to be configurable
-	input, err := os.Open("blockchain")
+	input, err := os.Open(*blockchain)
 	if err != nil {
 		panic(err)
 	}
@@ -213,12 +214,12 @@ func main() {
 		}
 
 		n++
-		if (n % 1000) == 0 {
+		if (n % 10000) == 0 {
 			fmt.Printf("processed %d blocks\n", n)
 		}
-		if n >= 20000 {
-			break
-		}
+		//if n >= 20000 {
+		//	break
+		//}
 	}
 
 	fmt.Printf("processed %d blocks\n", n)

From f0ada2afca2160c120be86020eb46884ca02695b Mon Sep 17 00:00:00 2001
From: Alexey Akhunov <akhounov@gmail.com>
Date: Tue, 10 Jul 2018 10:17:56 +0100
Subject: [PATCH 2/2] Timing

---
 main.go | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/main.go b/main.go
index bef6f3af..43b5a3fc 100644
--- a/main.go
+++ b/main.go
@@ -12,6 +12,7 @@ import (
 	"io"
 	"os"
 	"runtime/pprof"
+	"time"
 
 	"github.com/cosmos/ethermint/core"
 	"github.com/cosmos/ethermint/state"
@@ -120,6 +121,7 @@ func main() {
 	vmConfig := ethvm.Config{}
 
 	n := 0
+	startTime := time.Now()
 	for {
 		if err = stream.Decode(&block); err == io.EOF {
 			err = nil
@@ -215,7 +217,7 @@ func main() {
 
 		n++
 		if (n % 10000) == 0 {
-			fmt.Printf("processed %d blocks\n", n)
+			fmt.Printf("processed %d blocks, time so far: %v\n", n, time.Since(startTime))
 		}
 		//if n >= 20000 {
 		//	break