diff --git a/cmd/lotus-bench/import.go b/cmd/lotus-bench/import.go
index 3f99d0453..acbf9ebdc 100644
--- a/cmd/lotus-bench/import.go
+++ b/cmd/lotus-bench/import.go
@@ -26,7 +26,9 @@ import (
 	"github.com/filecoin-project/lotus/lib/blockstore"
 	_ "github.com/filecoin-project/lotus/lib/sigs/bls"
 	_ "github.com/filecoin-project/lotus/lib/sigs/secp"
+	metricsprometheus "github.com/ipfs/go-metrics-prometheus"
 	"github.com/ipld/go-car"
+	"github.com/prometheus/client_golang/prometheus/promhttp"
 
 	"github.com/filecoin-project/go-state-types/abi"
 	"github.com/filecoin-project/lotus/extern/sector-storage/ffiwrapper"
@@ -34,6 +36,7 @@ import (
 	bdg "github.com/dgraph-io/badger/v2"
 	"github.com/ipfs/go-datastore"
 	badger "github.com/ipfs/go-ds-badger2"
+	measure "github.com/ipfs/go-ds-measure"
 	pebbleds "github.com/ipfs/go-ds-pebble"
 
 	"github.com/urfave/cli/v2"
@@ -89,8 +92,12 @@ var importBenchCmd = &cli.Command{
 		&cli.BoolFlag{
 			Name: "only-import",
 		},
+		&cli.BoolFlag{
+			Name: "use-pebble",
+		},
 	},
 	Action: func(cctx *cli.Context) error {
+		metricsprometheus.Inject() //nolint:errcheck
 		vm.BatchSealVerifyParallelism = cctx.Int("batch-seal-verify-threads")
 		if !cctx.Args().Present() {
 			fmt.Println("must pass car file of chain to benchmark importing")
@@ -104,6 +111,7 @@ var importBenchCmd = &cli.Command{
 		defer cfi.Close() //nolint:errcheck // read only file
 
 		go func() {
+			http.Handle("/debug/metrics/prometheus", promhttp.Handler())
 			http.ListenAndServe("localhost:6060", nil) //nolint:errcheck
 		}()
 
@@ -126,7 +134,7 @@ var importBenchCmd = &cli.Command{
 		bdgOpt.Options.DetectConflicts = false
 
 		var bds datastore.Batching
-		if false {
+		if cctx.Bool("use-pebble") {
 			cache := 512
 			bds, err = pebbleds.NewDatastore(tdir, &pebble.Options{
 				// Pebble has a single combined cache area and the write
@@ -155,6 +163,8 @@ var importBenchCmd = &cli.Command{
 		}
 		defer bds.Close() //nolint:errcheck
 
+		bds = measure.New("dsbench", bds)
+
 		bs := blockstore.NewBlockstore(bds)
 		cacheOpts := blockstore.DefaultCacheOpts()
 		cacheOpts.HasBloomFilterSize = 0
@@ -310,6 +320,21 @@ var importBenchCmd = &cli.Command{
 
 		pprof.StopCPUProfile()
 
+		if true {
+			resp, err := http.Get("http://localhost:6060/debug/metrics/prometheus")
+			if err != nil {
+				return err
+			}
+
+			metricsfi, err := os.Create("import-bench.metrics")
+			if err != nil {
+				return err
+			}
+
+			io.Copy(metricsfi, resp.Body) //nolint:errcheck
+			metricsfi.Close()             //nolint:errcheck
+		}
+
 		return nil
 
 	},
diff --git a/go.mod b/go.mod
index 3fde407bb..b79d18938 100644
--- a/go.mod
+++ b/go.mod
@@ -12,7 +12,7 @@ require (
 	github.com/acarl005/stripansi v0.0.0-20180116102854-5a71ef0e047d
 	github.com/buger/goterm v0.0.0-20200322175922-2f3e71b85129
 	github.com/chzyer/readline v0.0.0-20180603132655-2972be24d48e
-	github.com/cockroachdb/pebble v0.0.0-20200916222308-4e219a90ba5b
+	github.com/cockroachdb/pebble v0.0.0-20201001221639-879f3bfeef07
 	github.com/coreos/go-systemd/v22 v22.0.0
 	github.com/detailyang/go-fallocate v0.0.0-20180908115635-432fa640bd2e
 	github.com/dgraph-io/badger/v2 v2.2007.2
@@ -81,6 +81,7 @@ require (
 	github.com/ipfs/go-log v1.0.4
 	github.com/ipfs/go-log/v2 v2.1.2-0.20200626104915-0016c0b4b3e4
 	github.com/ipfs/go-merkledag v0.3.2
+	github.com/ipfs/go-metrics-prometheus v0.0.2
 	github.com/ipfs/go-path v0.0.7
 	github.com/ipfs/go-unixfs v0.2.4
 	github.com/ipfs/interface-go-ipfs-core v0.2.3
@@ -115,6 +116,7 @@ require (
 	github.com/multiformats/go-multihash v0.0.14
 	github.com/opentracing/opentracing-go v1.2.0
 	github.com/polydawn/refmt v0.0.0-20190809202753-05966cbd336a
+	github.com/prometheus/client_golang v1.6.0
 	github.com/raulk/clock v1.1.0
 	github.com/stretchr/testify v1.6.1
 	github.com/supranational/blst v0.1.1
diff --git a/go.sum b/go.sum
index 9ef3587f4..be9682c83 100644
--- a/go.sum
+++ b/go.sum
@@ -136,6 +136,8 @@ github.com/cockroachdb/logtags v0.0.0-20190617123548-eb05cc24525f h1:o/kfcElHqOi
 github.com/cockroachdb/logtags v0.0.0-20190617123548-eb05cc24525f/go.mod h1:i/u985jwjWRlyHXQbwatDASoW0RMlZ/3i9yJHE2xLkI=
 github.com/cockroachdb/pebble v0.0.0-20200916222308-4e219a90ba5b h1:OKALTB609+19AM7wsO0k8yMwAqjEIppcnYvyIhA+ZlQ=
 github.com/cockroachdb/pebble v0.0.0-20200916222308-4e219a90ba5b/go.mod h1:hU7vhtrqonEphNF+xt8/lHdaBprxmV1h8BOGrd9XwmQ=
+github.com/cockroachdb/pebble v0.0.0-20201001221639-879f3bfeef07 h1:Cb2pZUCFXlLA8i7My+wrN51D41GeuhYOKa1dJeZt6NY=
+github.com/cockroachdb/pebble v0.0.0-20201001221639-879f3bfeef07/go.mod h1:hU7vhtrqonEphNF+xt8/lHdaBprxmV1h8BOGrd9XwmQ=
 github.com/cockroachdb/redact v0.0.0-20200622112456-cd282804bbd3 h1:2+dpIJzYMSbLi0587YXpi8tOJT52qCOI/1I0UNThc/I=
 github.com/cockroachdb/redact v0.0.0-20200622112456-cd282804bbd3/go.mod h1:BVNblN9mBWFyMyqK1k3AAiSxhvhfK2oOZZ2lK+dpvRg=
 github.com/codahale/hdrhistogram v0.0.0-20161010025455-3a0bb77429bd h1:qMd81Ts1T2OTKmB4acZcyKaMtRnY5Y44NuXGX2GFJ1w=
@@ -630,6 +632,8 @@ github.com/ipfs/go-merkledag v0.3.2 h1:MRqj40QkrWkvPswXs4EfSslhZ4RVPRbxwX11js0t1
 github.com/ipfs/go-merkledag v0.3.2/go.mod h1:fvkZNNZixVW6cKSZ/JfLlON5OlgTXNdRLz0p6QG/I2M=
 github.com/ipfs/go-metrics-interface v0.0.1 h1:j+cpbjYvu4R8zbleSs36gvB7jR+wsL2fGD6n0jO4kdg=
 github.com/ipfs/go-metrics-interface v0.0.1/go.mod h1:6s6euYU4zowdslK0GKHmqaIZ3j/b/tL7HTWtJ4VPgWY=
+github.com/ipfs/go-metrics-prometheus v0.0.2 h1:9i2iljLg12S78OhC6UAiXi176xvQGiZaGVF1CUVdE+s=
+github.com/ipfs/go-metrics-prometheus v0.0.2/go.mod h1:ELLU99AQQNi+zX6GCGm2lAgnzdSH3u5UVlCdqSXnEks=
 github.com/ipfs/go-path v0.0.3/go.mod h1:zIRQUez3LuQIU25zFjC2hpBTHimWx7VK5bjZgRLbbdo=
 github.com/ipfs/go-path v0.0.7 h1:H06hKMquQ0aYtHiHryOMLpQC1qC3QwXwkahcEVD51Ho=
 github.com/ipfs/go-path v0.0.7/go.mod h1:6KTKmeRnBXgqrTvzFrPV3CamxcgvXX/4z79tfAd2Sno=