Further speed up examples for testing

BUG=aomedia:2645

Change-Id: I725d65962800fe6645c2b8bc075dd198fc4621d2
diff --git a/examples/lightfield_encoder.c b/examples/lightfield_encoder.c
index d22f3b7..947a566 100644
--- a/examples/lightfield_encoder.c
+++ b/examples/lightfield_encoder.c
@@ -261,7 +261,7 @@
     die_codec(&codec, "Failed to set frame parallel decoding");
   if (aom_codec_control(&codec, AV1E_ENABLE_EXT_TILE_DEBUG, 1))
     die_codec(&codec, "Failed to enable encoder ext_tile debug");
-  if (aom_codec_control(&codec, AOME_SET_CPUUSED, 2))
+  if (aom_codec_control(&codec, AOME_SET_CPUUSED, 3))
     die_codec(&codec, "Failed to set cpu-used");
 
   // Note: The superblock is a sequence parameter and has to be the same for 1
diff --git a/examples/simple_encoder.c b/examples/simple_encoder.c
index ba059d6..9d37f43 100644
--- a/examples/simple_encoder.c
+++ b/examples/simple_encoder.c
@@ -100,6 +100,7 @@
 #include <string.h>
 
 #include "aom/aom_encoder.h"
+#include "aom/aomcx.h"
 #include "common/tools_common.h"
 #include "common/video_writer.h"
 
@@ -222,6 +223,9 @@
   if (aom_codec_enc_init(&codec, encoder, &cfg, 0))
     die_codec(&codec, "Failed to initialize encoder");
 
+  if (aom_codec_control(&codec, AOME_SET_CPUUSED, 2))
+    die_codec(&codec, "Failed to set cpu-used");
+
   // Encode frames.
   while (aom_img_read(&raw, infile)) {
     int flags = 0;
diff --git a/examples/twopass_encoder.c b/examples/twopass_encoder.c
index c052dea..70faada 100644
--- a/examples/twopass_encoder.c
+++ b/examples/twopass_encoder.c
@@ -52,6 +52,7 @@
 #include <string.h>
 
 #include "aom/aom_encoder.h"
+#include "aom/aomcx.h"
 #include "common/tools_common.h"
 #include "common/video_writer.h"
 
@@ -160,6 +161,9 @@
   if (aom_codec_enc_init(&codec, encoder, cfg, 0))
     die_codec(&codec, "Failed to initialize encoder");
 
+  if (aom_codec_control(&codec, AOME_SET_CPUUSED, 2))
+    die_codec(&codec, "Failed to set cpu-used");
+
   // Encode frames.
   while (aom_img_read(raw, infile) && frame_count < limit) {
     ++frame_count;
diff --git a/test/tools_common.sh b/test/tools_common.sh
index c087106..d40709b 100755
--- a/test/tools_common.sh
+++ b/test/tools_common.sh
@@ -196,7 +196,7 @@
 
 # Echoes "fast" encode params for use with aomenc.
 aomenc_encode_test_fast_params() {
-  echo "--cpu-used=1
+  echo "--cpu-used=2
         --limit=${AV1_ENCODE_TEST_FRAME_LIMIT}
         --lag-in-frames=0
         --test-decode=fatal"