diff --git a/test/epictest/addcat_test.go b/test/epictest/addcat_test.go
index ff6e899db..d214f0bab 100644
--- a/test/epictest/addcat_test.go
+++ b/test/epictest/addcat_test.go
@@ -13,12 +13,13 @@ import (
 	random "github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/jbenet/go-random"
 	mocknet "github.com/jbenet/go-ipfs/p2p/net/mock"
 	errors "github.com/jbenet/go-ipfs/util/debugerror"
+	testutil "github.com/jbenet/go-ipfs/util/testutil"
 )
 
 const kSeed = 1
 
 func Test1KBInstantaneous(t *testing.T) {
-	conf := Config{
+	conf := testutil.LatencyConfig{
 		NetworkLatency:    0,
 		RoutingLatency:    0,
 		BlockstoreLatency: 0,
@@ -31,7 +32,7 @@ func Test1KBInstantaneous(t *testing.T) {
 
 func TestDegenerateSlowBlockstore(t *testing.T) {
 	SkipUnlessEpic(t)
-	conf := Config{BlockstoreLatency: 50 * time.Millisecond}
+	conf := testutil.LatencyConfig{BlockstoreLatency: 50 * time.Millisecond}
 	if err := AddCatPowers(conf, 128); err != nil {
 		t.Fatal(err)
 	}
@@ -39,7 +40,7 @@ func TestDegenerateSlowBlockstore(t *testing.T) {
 
 func TestDegenerateSlowNetwork(t *testing.T) {
 	SkipUnlessEpic(t)
-	conf := Config{NetworkLatency: 400 * time.Millisecond}
+	conf := testutil.LatencyConfig{NetworkLatency: 400 * time.Millisecond}
 	if err := AddCatPowers(conf, 128); err != nil {
 		t.Fatal(err)
 	}
@@ -47,7 +48,7 @@ func TestDegenerateSlowNetwork(t *testing.T) {
 
 func TestDegenerateSlowRouting(t *testing.T) {
 	SkipUnlessEpic(t)
-	conf := Config{RoutingLatency: 400 * time.Millisecond}
+	conf := testutil.LatencyConfig{RoutingLatency: 400 * time.Millisecond}
 	if err := AddCatPowers(conf, 128); err != nil {
 		t.Fatal(err)
 	}
@@ -55,13 +56,13 @@ func TestDegenerateSlowRouting(t *testing.T) {
 
 func Test100MBMacbookCoastToCoast(t *testing.T) {
 	SkipUnlessEpic(t)
-	conf := Config{}.Network_NYtoSF().Blockstore_SlowSSD2014().Routing_Slow()
+	conf := testutil.LatencyConfig{}.Network_NYtoSF().Blockstore_SlowSSD2014().Routing_Slow()
 	if err := DirectAddCat(RandomBytes(100*1024*1024), conf); err != nil {
 		t.Fatal(err)
 	}
 }
 
-func AddCatPowers(conf Config, megabytesMax int64) error {
+func AddCatPowers(conf testutil.LatencyConfig, megabytesMax int64) error {
 	var i int64
 	for i = 1; i < megabytesMax; i = i * 2 {
 		fmt.Printf("%d MB\n", i)
@@ -78,7 +79,7 @@ func RandomBytes(n int64) []byte {
 	return data.Bytes()
 }
 
-func DirectAddCat(data []byte, conf Config) error {
+func DirectAddCat(data []byte, conf testutil.LatencyConfig) error {
 	ctx, cancel := context.WithCancel(context.Background())
 	defer cancel()
 	const numPeers = 2
diff --git a/test/epictest/bench_test.go b/test/epictest/bench_test.go
index 323ad6265..72c82871b 100644
--- a/test/epictest/bench_test.go
+++ b/test/epictest/bench_test.go
@@ -1,8 +1,12 @@
 package epictest
 
-import "testing"
+import (
+	"testing"
 
-func benchmarkAddCat(numBytes int64, conf Config, b *testing.B) {
+	testutil "github.com/jbenet/go-ipfs/util/testutil"
+)
+
+func benchmarkAddCat(numBytes int64, conf testutil.LatencyConfig, b *testing.B) {
 
 	b.StopTimer()
 	b.SetBytes(numBytes)
@@ -16,7 +20,7 @@ func benchmarkAddCat(numBytes int64, conf Config, b *testing.B) {
 	}
 }
 
-var instant = Config{}.All_Instantaneous()
+var instant = testutil.LatencyConfig{}.All_Instantaneous()
 
 func BenchmarkInstantaneousAddCat1KB(b *testing.B)   { benchmarkAddCat(1*KB, instant, b) }
 func BenchmarkInstantaneousAddCat1MB(b *testing.B)   { benchmarkAddCat(1*MB, instant, b) }
@@ -29,7 +33,7 @@ func BenchmarkInstantaneousAddCat64MB(b *testing.B)  { benchmarkAddCat(64*MB, in
 func BenchmarkInstantaneousAddCat128MB(b *testing.B) { benchmarkAddCat(128*MB, instant, b) }
 func BenchmarkInstantaneousAddCat256MB(b *testing.B) { benchmarkAddCat(256*MB, instant, b) }
 
-var routing = Config{}.Routing_Slow()
+var routing = testutil.LatencyConfig{}.Routing_Slow()
 
 func BenchmarkRoutingSlowAddCat1MB(b *testing.B)   { benchmarkAddCat(1*MB, routing, b) }
 func BenchmarkRoutingSlowAddCat2MB(b *testing.B)   { benchmarkAddCat(2*MB, routing, b) }
@@ -42,7 +46,7 @@ func BenchmarkRoutingSlowAddCat128MB(b *testing.B) { benchmarkAddCat(128*MB, rou
 func BenchmarkRoutingSlowAddCat256MB(b *testing.B) { benchmarkAddCat(256*MB, routing, b) }
 func BenchmarkRoutingSlowAddCat512MB(b *testing.B) { benchmarkAddCat(512*MB, routing, b) }
 
-var network = Config{}.Network_NYtoSF()
+var network = testutil.LatencyConfig{}.Network_NYtoSF()
 
 func BenchmarkNetworkSlowAddCat1MB(b *testing.B)   { benchmarkAddCat(1*MB, network, b) }
 func BenchmarkNetworkSlowAddCat2MB(b *testing.B)   { benchmarkAddCat(2*MB, network, b) }
@@ -54,7 +58,7 @@ func BenchmarkNetworkSlowAddCat64MB(b *testing.B)  { benchmarkAddCat(64*MB, netw
 func BenchmarkNetworkSlowAddCat128MB(b *testing.B) { benchmarkAddCat(128*MB, network, b) }
 func BenchmarkNetworkSlowAddCat256MB(b *testing.B) { benchmarkAddCat(256*MB, network, b) }
 
-var hdd = Config{}.Blockstore_7200RPM()
+var hdd = testutil.LatencyConfig{}.Blockstore_7200RPM()
 
 func BenchmarkBlockstoreSlowAddCat1MB(b *testing.B)   { benchmarkAddCat(1*MB, hdd, b) }
 func BenchmarkBlockstoreSlowAddCat2MB(b *testing.B)   { benchmarkAddCat(2*MB, hdd, b) }
@@ -66,7 +70,7 @@ func BenchmarkBlockstoreSlowAddCat64MB(b *testing.B)  { benchmarkAddCat(64*MB, h
 func BenchmarkBlockstoreSlowAddCat128MB(b *testing.B) { benchmarkAddCat(128*MB, hdd, b) }
 func BenchmarkBlockstoreSlowAddCat256MB(b *testing.B) { benchmarkAddCat(256*MB, hdd, b) }
 
-var mixed = Config{}.Network_NYtoSF().Blockstore_SlowSSD2014().Routing_Slow()
+var mixed = testutil.LatencyConfig{}.Network_NYtoSF().Blockstore_SlowSSD2014().Routing_Slow()
 
 func BenchmarkMixedAddCat1MBXX(b *testing.B) { benchmarkAddCat(1*MB, mixed, b) }
 func BenchmarkMixedAddCat2MBXX(b *testing.B) { benchmarkAddCat(2*MB, mixed, b) }
diff --git a/test/epictest/core.go b/test/epictest/core.go
index e89db1522..4493e3350 100644
--- a/test/epictest/core.go
+++ b/test/epictest/core.go
@@ -9,6 +9,7 @@ import (
 
 	blockstore "github.com/jbenet/go-ipfs/blocks/blockstore"
 	blockservice "github.com/jbenet/go-ipfs/blockservice"
+	testutil "github.com/jbenet/go-ipfs/util/testutil"
 	exchange "github.com/jbenet/go-ipfs/exchange"
 	bitswap "github.com/jbenet/go-ipfs/exchange/bitswap"
 	bsnet "github.com/jbenet/go-ipfs/exchange/bitswap/network"
@@ -130,7 +131,7 @@ func (r *repo) Exchange() exchange.Interface {
 	return r.exchange
 }
 
-func MocknetTestRepo(p peer.ID, h host.Host, conf Config) RepoFactory {
+func MocknetTestRepo(p peer.ID, h host.Host, conf testutil.LatencyConfig) RepoFactory {
 	return func(ctx context.Context) (Repo, error) {
 		const kWriteCacheElems = 100
 		const alwaysSendToPeer = true
diff --git a/test/epictest/test_config.go b/test/epictest/test_config.go
index e3d34110e..619ed8ae4 100644
--- a/test/epictest/test_config.go
+++ b/test/epictest/test_config.go
@@ -1,48 +1 @@
 package epictest
-
-import "time"
-
-type Config struct {
-	BlockstoreLatency time.Duration
-	NetworkLatency    time.Duration
-	RoutingLatency    time.Duration
-}
-
-func (c Config) All_Instantaneous() Config {
-	// Could use a zero value but whatever. Consistency of interface
-	c.NetworkLatency = 0
-	c.RoutingLatency = 0
-	c.BlockstoreLatency = 0
-	return c
-}
-
-func (c Config) Network_NYtoSF() Config {
-	c.NetworkLatency = 20 * time.Millisecond
-	return c
-}
-
-func (c Config) Network_IntraDatacenter2014() Config {
-	c.NetworkLatency = 250 * time.Microsecond
-	return c
-}
-
-func (c Config) Blockstore_FastSSD2014() Config {
-	const iops = 100000
-	c.BlockstoreLatency = (1 / iops) * time.Second
-	return c
-}
-
-func (c Config) Blockstore_SlowSSD2014() Config {
-	c.BlockstoreLatency = 150 * time.Microsecond
-	return c
-}
-
-func (c Config) Blockstore_7200RPM() Config {
-	c.BlockstoreLatency = 8 * time.Millisecond
-	return c
-}
-
-func (c Config) Routing_Slow() Config {
-	c.RoutingLatency = 200 * time.Millisecond
-	return c
-}
diff --git a/test/epictest/three_legged_cat_test.go b/test/epictest/three_legged_cat_test.go
index 38147e426..7ce396a34 100644
--- a/test/epictest/three_legged_cat_test.go
+++ b/test/epictest/three_legged_cat_test.go
@@ -9,10 +9,11 @@ import (
 	context "github.com/jbenet/go-ipfs/Godeps/_workspace/src/code.google.com/p/go.net/context"
 	mocknet "github.com/jbenet/go-ipfs/p2p/net/mock"
 	errors "github.com/jbenet/go-ipfs/util/debugerror"
+	testutil "github.com/jbenet/go-ipfs/util/testutil"
 )
 
 func TestThreeLeggedCat(t *testing.T) {
-	conf := Config{
+	conf := testutil.LatencyConfig{
 		NetworkLatency:    0,
 		RoutingLatency:    0,
 		BlockstoreLatency: 0,
@@ -22,7 +23,7 @@ func TestThreeLeggedCat(t *testing.T) {
 	}
 }
 
-func RunThreeLeggedCat(data []byte, conf Config) error {
+func RunThreeLeggedCat(data []byte, conf testutil.LatencyConfig) error {
 	ctx, cancel := context.WithCancel(context.Background())
 	defer cancel()
 	const numPeers = 3
diff --git a/util/testutil/latency_config.go b/util/testutil/latency_config.go
new file mode 100644
index 000000000..767b9a638
--- /dev/null
+++ b/util/testutil/latency_config.go
@@ -0,0 +1,48 @@
+package testutil
+
+import "time"
+
+type LatencyConfig struct {
+	BlockstoreLatency time.Duration
+	NetworkLatency    time.Duration
+	RoutingLatency    time.Duration
+}
+
+func (c LatencyConfig) All_Instantaneous() LatencyConfig {
+	// Could use a zero value but whatever. Consistency of interface
+	c.NetworkLatency = 0
+	c.RoutingLatency = 0
+	c.BlockstoreLatency = 0
+	return c
+}
+
+func (c LatencyConfig) Network_NYtoSF() LatencyConfig {
+	c.NetworkLatency = 20 * time.Millisecond
+	return c
+}
+
+func (c LatencyConfig) Network_IntraDatacenter2014() LatencyConfig {
+	c.NetworkLatency = 250 * time.Microsecond
+	return c
+}
+
+func (c LatencyConfig) Blockstore_FastSSD2014() LatencyConfig {
+	const iops = 100000
+	c.BlockstoreLatency = (1 / iops) * time.Second
+	return c
+}
+
+func (c LatencyConfig) Blockstore_SlowSSD2014() LatencyConfig {
+	c.BlockstoreLatency = 150 * time.Microsecond
+	return c
+}
+
+func (c LatencyConfig) Blockstore_7200RPM() LatencyConfig {
+	c.BlockstoreLatency = 8 * time.Millisecond
+	return c
+}
+
+func (c LatencyConfig) Routing_Slow() LatencyConfig {
+	c.RoutingLatency = 200 * time.Millisecond
+	return c
+}