diff --git a/infra/specs/client.webrtc.perf.json b/infra/specs/client.webrtc.perf.json
index 99ebb3b93b..cc48da33e8 100644
--- a/infra/specs/client.webrtc.perf.json
+++ b/infra/specs/client.webrtc.perf.json
@@ -7,7 +7,8 @@
         "args": [
           "--android",
           "--adb-path",
-          "../../third_party/android_sdk/public/platform-tools/adb"
+          "../../third_party/android_sdk/public/platform-tools/adb",
+          "--isolated-script-test-perf-output=${ISOLATED_OUTDIR}/perftest-output.pb"
         ],
         "merge": {
           "args": [
@@ -39,6 +40,7 @@
       },
       {
         "args": [
+          "--isolated-script-test-perf-output=${ISOLATED_OUTDIR}/perftest-output.pb",
           "--nologs"
         ],
         "merge": {
@@ -77,7 +79,8 @@
         "args": [
           "--android",
           "--adb-path",
-          "../../third_party/android_sdk/public/platform-tools/adb"
+          "../../third_party/android_sdk/public/platform-tools/adb",
+          "--isolated-script-test-perf-output=${ISOLATED_OUTDIR}/perftest-output.pb"
         ],
         "merge": {
           "args": [
@@ -109,6 +112,7 @@
       },
       {
         "args": [
+          "--isolated-script-test-perf-output=${ISOLATED_OUTDIR}/perftest-output.pb",
           "--nologs"
         ],
         "merge": {
@@ -147,7 +151,8 @@
         "args": [
           "--android",
           "--adb-path",
-          "../../third_party/android_sdk/public/platform-tools/adb"
+          "../../third_party/android_sdk/public/platform-tools/adb",
+          "--isolated-script-test-perf-output=${ISOLATED_OUTDIR}/perftest-output.pb"
         ],
         "merge": {
           "args": [
@@ -179,6 +184,7 @@
       },
       {
         "args": [
+          "--isolated-script-test-perf-output=${ISOLATED_OUTDIR}/perftest-output.pb",
           "--nologs"
         ],
         "merge": {
@@ -217,7 +223,8 @@
         "args": [
           "--android",
           "--adb-path",
-          "../../third_party/android_sdk/public/platform-tools/adb"
+          "../../third_party/android_sdk/public/platform-tools/adb",
+          "--isolated-script-test-perf-output=${ISOLATED_OUTDIR}/perftest-output.pb"
         ],
         "merge": {
           "args": [
@@ -248,6 +255,7 @@
       },
       {
         "args": [
+          "--isolated-script-test-perf-output=${ISOLATED_OUTDIR}/perftest-output.pb",
           "--nologs"
         ],
         "merge": {
diff --git a/infra/specs/mixins.pyl b/infra/specs/mixins.pyl
index 2ce49eb4ca..6fd6e3be73 100644
--- a/infra/specs/mixins.pyl
+++ b/infra/specs/mixins.pyl
@@ -218,6 +218,13 @@
       'args': ['--test-suite', 'low_bandwidth_audio_perf_test']
     }
   },
+  'perf-output': {
+    '$mixin_append': {
+      'args': [
+        '--isolated-script-test-perf-output=${ISOLATED_OUTDIR}/perftest-output.pb'
+      ]
+    }
+  },
   'perf-pool': {
     'swarming': {
       'dimensions': {
diff --git a/infra/specs/mixins_webrtc.pyl b/infra/specs/mixins_webrtc.pyl
index 7dc911fb48..6037e4ffa2 100644
--- a/infra/specs/mixins_webrtc.pyl
+++ b/infra/specs/mixins_webrtc.pyl
@@ -160,6 +160,13 @@
       'args': ['--test-suite', 'low_bandwidth_audio_perf_test'],
     },
   },
+  'perf-output': {
+    '$mixin_append': {
+      'args': [
+        '--isolated-script-test-perf-output=${ISOLATED_OUTDIR}/perftest-output.pb',
+      ],
+    },
+  },
   'perf-pool': {
     'swarming': {
       'dimensions': {
diff --git a/infra/specs/waterfalls.pyl b/infra/specs/waterfalls.pyl
index 11a12cb70c..3f1db3e1dd 100644
--- a/infra/specs/waterfalls.pyl
+++ b/infra/specs/waterfalls.pyl
@@ -257,7 +257,7 @@
       'Perf Android32 (M AOSP Nexus6)': {
         'mixins': [
           'shamu', 'marshmallow_generic', 'android-devices', 'perf-pool',
-          'timeout-3h', 'has_native_resultdb_integration'
+          'perf-output', 'timeout-3h', 'has_native_resultdb_integration'
         ],
         'test_suites': {
           'gtest_tests': 'android_perf_tests',
@@ -266,7 +266,7 @@
       'Perf Android32 (M Nexus5)': {
         'mixins': [
           'hammerhead', 'marshmallow_generic', 'android-devices', 'perf-pool',
-          'timeout-3h', 'has_native_resultdb_integration'
+          'perf-output', 'timeout-3h', 'has_native_resultdb_integration'
         ],
         'test_suites': {
           'gtest_tests': 'android_perf_tests',
@@ -275,7 +275,7 @@
       'Perf Android64 (M Nexus5X)': {
         'mixins': [
           'bullhead', 'marshmallow', 'android-devices', 'perf-pool',
-          'timeout-3h', 'has_native_resultdb_integration'
+          'perf-output', 'timeout-3h', 'has_native_resultdb_integration'
         ],
         'test_suites': {
           'gtest_tests': 'android_perf_tests',
@@ -284,7 +284,7 @@
       'Perf Android64 (O Pixel2)': {
         'mixins': [
           'walleye', 'android-devices', 'perf-pool', 'timeout-3h',
-          'has_native_resultdb_integration'
+          'perf-output', 'has_native_resultdb_integration'
         ],
         'test_suites': {
           'gtest_tests': 'android_perf_tests',