Welcome to Trace-O-Matic

Trace-O-Matic automates the collection of Chromium traces on a 2023 Moto G Play using release builds of the latest Chromium code (within 24 hours) and, optionally, will apply a CL to the code and allow for testing experimental code (just be patient because that involves a build step that may take a while).

The resulting traces will be made available on a permanent, sharable URL and can be viewed in either the Perfetto trace viewer or Chrome's dev tools profile view.

Test URL:

Number of tests to run:

Build queue: Idle, Test queue: Idle

Advanced Settings:

Additional connection latency (ms):

Patch build with Chromium CL (numeric, optional):

Rebuild CL patch (if the CL was previously tested and has since been updated)

Close browser and clear profile between runs

Record video of the page loading (using adb screenrecord)

Trace Categories

Include system CPU and scheduler tracing

Categories

High-Overhead Categories

accessibility AccountFetcherService android_webview android_webview.timeline aogh audio base benchmark blink blink.animations blink.bindings blink.console blink.net blink.resource blink.user_timing blink.worker blink_style Blob browser browsing_data CacheStorage Calculators CameraStream cppgc camera cast_app cast_perf_test cast.mdns cast.mdns.socket cast.stream cc cc.debug cdp.perf chromeos cma compositor content content_capture delegated_ink_trails device devtools devtools.contrast devtools.timeline disk_cache download download_service drm drmcursor dwrite DXVA_Decoding evdev event event_latency exo extensions explore_sites FileSystem file_system_provider fledge fonts GAMEPAD gpu gpu.angle gpu.angle.texture_metrics gpu.capture headless history hwoverlays identity ime IndexedDB input io ipc Java jni jpeg latency latencyInfo leveldb loading log login media media_router memory midi mojom mus native navigation net netlog offline_pages omnibox oobe openscreen ozone partition_alloc passwords p2p page-serialization paint_preview pepper PlatformMalloc power ppapi ppapi_proxy print raf_investigation rail renderer renderer_host renderer.scheduler resources RLZ ServiceWorker SiteEngagement safe_browsing scheduler scheduler.long_tasks screenlock_monitor segmentation_platform sequence_manager service_manager sharing shell shortcut_viewer shutdown skia sql stadia_media stadia_rtc startup sync system_apps test_gpu toplevel toplevel.flow ui v8 v8.execute v8.wasm ValueStoreFrontend::Backend views views.frame viz vk wakeup.flow wayland webaudio webengine.fidl weblayer WebCore webrtc webrtc_stats xr

android_view_hierarchy animation-worklet audio audio-worklet audio.latency base blink.debug blink.debug.display_lock blink.debug.layout blink.debug.layout.scrollbars blink.debug.layout.trees blink.feature_usage blink.image_decoding blink.invalidation identifiability identifiability.high_entropy_api cc cc.debug cc.debug.cdp-perf cc.debug.display_items cc.debug.lcd_text cc.debug.picture cc.debug.scheduler cc.debug.scheduler.frames cc.debug.scheduler.now content.verbose cpu_profiler cppgc cpu_profiler.debug devtools.screenshot devtools.timeline devtools.timeline.frame devtools.timeline.inputs devtools.timeline.invalidationTracking devtools.timeline.layers devtools.timeline.picture devtools.timeline.stack file fonts gpu_cmd_queue gpu.dawn gpu.debug gpu.decoder gpu.device gpu.service gpu.vulkan.vma histogram_samples java-heap-profiler layer-element layout_shift.debug lifecycles loading mediastream memory-infra memory-infra.v8.code_stats mojom net network paint-worklet power renderer.scheduler renderer.scheduler.debug sequence_manager sequence_manager.debug sequence_manager.verbose_snapshots skia skia.gpu skia.gpu.cache skia.shaders SyncFileSystem system_stats thread_pool_diagnostics toplevel.ipc user_action_samples v8.compile v8.cpu_profiler v8.gc v8.gc_stats v8.ic_stats v8.inspector v8.runtime v8.runtime_stats v8.runtime_stats_sampling v8.stack_trace v8.turbofan v8.wasm.detailed v8.wasm.turbofan video_and_image_capture viz.gpu_composite_time viz.debug.overlay_planes viz.hit_testing_flow viz.overdraw viz.quads viz.surface_id_flow viz.surface_lifetime viz.triangles webaudio.audionode webgpu webrtc worker.scheduler xr.debug

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