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Issue 784965 link

Starred by 1 user
Status: WontFix
Owner:
█ junov@chromium.org
Last visit > 30 days ago
Closed: Jan 2018
Cc:
█ junov@chromium.org
simonhatch@chromium.org
dtu@chromium.org
tdres...@chromium.org
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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40% regression in blink_perf.canvas at 514970:515100

Project Member Reported by tdres...@chromium.org, Nov 14 2017 
See the link to graphs below.
Project Member

Comment 1 by 42576172...@developer.gserviceaccount.com, Nov 14 2017 

All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=784965

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=cd4372366926bddb03bf734227dc5a633394154da0c5055b77f01279cc49ba62


Bot(s) for this bug's original alert(s):

chromium-rel-mac12-mini-8gb
Project Member

Comment 4 by 42576172...@developer.gserviceaccount.com, Nov 14 2017 

📍 Couldn't reproduce a difference.
https://pinpoint-dot-chromeperf.appspot.com/job/12f81d59f80000
Project Member

Comment 5 by 42576172...@developer.gserviceaccount.com, Nov 14 2017 

📍 Couldn't reproduce a difference.
https://pinpoint-dot-chromeperf.appspot.com/job/12e0e479f80000
Project Member

Comment 7 by 42576172...@developer.gserviceaccount.com, Nov 15 2017 

📍 Couldn't reproduce a difference.
https://pinpoint-dot-chromeperf.appspot.com/job/11068029f80000

Comment 8 by sullivan@chromium.org, Jan 12 2018

Cc: dtu@chromium.org junov@chromium.org simonhatch@chromium.org
junov, any ideas why this test outputs numbers on the Mac Mini on the waterfall, but zero on the bisector? They're the exact same hardware AFAICT:

waterfall:
https://chromium-swarm.appspot.com/task?id=39b82e8b80abf610&refresh=10&show_raw=1
(INFO) 2017-11-08 22:11:18,576 browser._LogBrowserInfo:132  GPU device 0: VENDOR = 0x8086 (Intel), DEVICE = 0xa26
(INFO) 2017-11-08 22:11:18,576 browser._LogBrowserInfo:134  GPU Attributes:
(INFO) 2017-11-08 22:11:18,576 browser._LogBrowserInfo:136    amd_switchable      : False
(INFO) 2017-11-08 22:11:18,576 browser._LogBrowserInfo:136    basic_info_state    : 1
(INFO) 2017-11-08 22:11:18,576 browser._LogBrowserInfo:136    can_support_threaded_texture_mailbox: False
(INFO) 2017-11-08 22:11:18,576 browser._LogBrowserInfo:136    context_info_state  : 1
(INFO) 2017-11-08 22:11:18,576 browser._LogBrowserInfo:136    direct_rendering    : True
(INFO) 2017-11-08 22:11:18,576 browser._LogBrowserInfo:136    driver_date         : 
(INFO) 2017-11-08 22:11:18,576 browser._LogBrowserInfo:136    driver_vendor       : 
(INFO) 2017-11-08 22:11:18,576 browser._LogBrowserInfo:136    driver_version      : 10.22.25
(INFO) 2017-11-08 22:11:18,576 browser._LogBrowserInfo:136    encrypted_only      : False
(INFO) 2017-11-08 22:11:18,576 browser._LogBrowserInfo:136    gl_extensions       : GL_ARB_blend_func_extended GL_ARB_draw_buffers_blend GL_ARB_draw_indirect GL_ARB_ES2_compatibility GL_ARB_explicit_attrib_location GL_ARB_gpu_shader_fp64 GL_ARB_gpu_shader5 GL_ARB_instanced_arrays GL_ARB_internalformat_query GL_ARB_occlusion_query2 GL_ARB_sample_shading GL_ARB_sampler_objects GL_ARB_separate_shader_objects GL_ARB_shader_bit_encoding GL_ARB_shader_subroutine GL_ARB_shading_language_include GL_ARB_tessellation_shader GL_ARB_texture_buffer_object_rgb32 GL_ARB_texture_cube_map_array GL_ARB_texture_gather GL_ARB_texture_query_lod GL_ARB_texture_rgb10_a2ui GL_ARB_texture_storage GL_ARB_texture_swizzle GL_ARB_timer_query GL_ARB_transform_feedback2 GL_ARB_transform_feedback3 GL_ARB_vertex_attrib_64bit GL_ARB_vertex_type_2_10_10_10_rev GL_ARB_viewport_array GL_EXT_debug_label GL_EXT_debug_marker GL_EXT_framebuffer_multisample_blit_scaled GL_EXT_texture_compression_s3tc GL_EXT_texture_filter_anisotropic GL_EXT_texture_sRGB_decode GL_APPLE_client_storage GL_APPLE_container_object_shareable GL_APPLE_flush_render GL_APPLE_object_purgeable GL_APPLE_rgb_422 GL_APPLE_row_bytes GL_APPLE_texture_range GL_ATI_texture_mirror_once GL_NV_texture_barrier
(INFO) 2017-11-08 22:11:18,577 browser._LogBrowserInfo:136    gl_renderer         : Intel HD Graphics 5000 OpenGL Engine
(INFO) 2017-11-08 22:11:18,577 browser._LogBrowserInfo:136    gl_reset_notification_strategy: 0
(INFO) 2017-11-08 22:11:18,577 browser._LogBrowserInfo:136    gl_vendor           : Intel Inc.
(INFO) 2017-11-08 22:11:18,577 browser._LogBrowserInfo:136    gl_version          : 4.1 INTEL-10.22.25
(INFO) 2017-11-08 22:11:18,577 browser._LogBrowserInfo:136    gl_ws_extensions    : 
(INFO) 2017-11-08 22:11:18,577 browser._LogBrowserInfo:136    gl_ws_vendor        : 
(INFO) 2017-11-08 22:11:18,577 browser._LogBrowserInfo:136    gl_ws_version       : 
(INFO) 2017-11-08 22:11:18,577 browser._LogBrowserInfo:136    in_process_gpu      : False
(INFO) 2017-11-08 22:11:18,577 browser._LogBrowserInfo:136    initialization_time : 0.027654
(INFO) 2017-11-08 22:11:18,577 browser._LogBrowserInfo:136    jpeg_decode_accelerator_supported: False
(INFO) 2017-11-08 22:11:18,577 browser._LogBrowserInfo:136    max_framerate_denominator: 1
(INFO) 2017-11-08 22:11:18,577 browser._LogBrowserInfo:136    max_framerate_numerator: 30
(INFO) 2017-11-08 22:11:18,577 browser._LogBrowserInfo:136    max_msaa_samples    : 8
(INFO) 2017-11-08 22:11:18,577 browser._LogBrowserInfo:136    max_resolution_height: 2160
(INFO) 2017-11-08 22:11:18,577 browser._LogBrowserInfo:136    max_resolution_width: 4096
(INFO) 2017-11-08 22:11:18,577 browser._LogBrowserInfo:136    min_resolution_height: 16
(INFO) 2017-11-08 22:11:18,577 browser._LogBrowserInfo:136    min_resolution_width: 16
(INFO) 2017-11-08 22:11:18,577 browser._LogBrowserInfo:136    optimus             : False
(INFO) 2017-11-08 22:11:18,577 browser._LogBrowserInfo:136    passthrough_cmd_decoder: False
(INFO) 2017-11-08 22:11:18,577 browser._LogBrowserInfo:136    pixel_shader_version: 4.10
(INFO) 2017-11-08 22:11:18,577 browser._LogBrowserInfo:136    process_crash_count : 0
(INFO) 2017-11-08 22:11:18,578 browser._LogBrowserInfo:136    profile             : 3
(INFO) 2017-11-08 22:11:18,578 browser._LogBrowserInfo:136    sandboxed           : True
(INFO) 2017-11-08 22:11:18,578 browser._LogBrowserInfo:136    software_rendering  : False
(INFO) 2017-11-08 22:11:18,578 browser._LogBrowserInfo:136    supports_overlays   : False
(INFO) 2017-11-08 22:11:18,578 browser._LogBrowserInfo:136    vertex_shader_version: 4.10
(INFO) 2017-11-08 22:11:18,578 browser._LogBrowserInfo:136    video_decode_accelerator_flags: 0
(INFO) 2017-11-08 22:11:18,578 browser._LogBrowserInfo:138  Feature Status:
(INFO) 2017-11-08 22:11:18,578 browser._LogBrowserInfo:140    2d_canvas           : enabled
(INFO) 2017-11-08 22:11:18,578 browser._LogBrowserInfo:140    checker_imaging     : enabled_on
(INFO) 2017-11-08 22:11:18,579 browser._LogBrowserInfo:140    flash_3d            : enabled
(INFO) 2017-11-08 22:11:18,579 browser._LogBrowserInfo:140    flash_stage3d       : enabled
(INFO) 2017-11-08 22:11:18,579 browser._LogBrowserInfo:140    flash_stage3d_baseline: enabled
(INFO) 2017-11-08 22:11:18,579 browser._LogBrowserInfo:140    gpu_compositing     : enabled
(INFO) 2017-11-08 22:11:18,579 browser._LogBrowserInfo:140    multiple_raster_threads: enabled_on
(INFO) 2017-11-08 22:11:18,579 browser._LogBrowserInfo:140    native_gpu_memory_buffers: enabled
(INFO) 2017-11-08 22:11:18,579 browser._LogBrowserInfo:140    rasterization       : enabled
(INFO) 2017-11-08 22:11:18,579 browser._LogBrowserInfo:140    video_decode        : enabled
(INFO) 2017-11-08 22:11:18,579 browser._LogBrowserInfo:140    webgl               : enabled
(INFO) 2017-11-08 22:11:18,579 browser._LogBrowserInfo:140    webgl2              : enabled
(INFO) 2017-11-08 22:11:18,580 browser._LogBrowserInfo:142  Driver Bug Workarounds:
(INFO) 2017-11-08 22:11:18,580 browser._LogBrowserInfo:144    add_and_true_to_loop_condition
(INFO) 2017-11-08 22:11:18,580 browser._LogBrowserInfo:144    adjust_src_dst_region_for_blitframebuffer
(INFO) 2017-11-08 22:11:18,580 browser._LogBrowserInfo:144    avoid_stencil_buffers
(INFO) 2017-11-08 22:11:18,580 browser._LogBrowserInfo:144    decode_encode_srgb_for_generatemipmap
(INFO) 2017-11-08 22:11:18,580 browser._LogBrowserInfo:144    disable_framebuffer_cmaa
(INFO) 2017-11-08 22:11:18,580 browser._LogBrowserInfo:144    disable_webgl_rgb_multisampling_usage
(INFO) 2017-11-08 22:11:18,580 browser._LogBrowserInfo:144    emulate_abs_int_function
(INFO) 2017-11-08 22:11:18,580 browser._LogBrowserInfo:144    get_frag_data_info_bug
(INFO) 2017-11-08 22:11:18,581 browser._LogBrowserInfo:144    init_two_cube_map_levels_before_copyteximage
(INFO) 2017-11-08 22:11:18,581 browser._LogBrowserInfo:144    msaa_is_slow
(INFO) 2017-11-08 22:11:18,581 browser._LogBrowserInfo:144    pack_parameters_workaround_with_pack_buffer
(INFO) 2017-11-08 22:11:18,581 browser._LogBrowserInfo:144    rebind_transform_feedback_before_resume
(INFO) 2017-11-08 22:11:18,581 browser._LogBrowserInfo:144    regenerate_struct_names
(INFO) 2017-11-08 22:11:18,581 browser._LogBrowserInfo:144    remove_invariant_and_centroid_for_essl3
(INFO) 2017-11-08 22:11:18,582 browser._LogBrowserInfo:144    reset_base_mipmap_level_before_texstorage
(INFO) 2017-11-08 22:11:18,582 browser._LogBrowserInfo:144    rewrite_texelfetchoffset_to_texelfetch
(INFO) 2017-11-08 22:11:18,582 browser._LogBrowserInfo:144    scalarize_vec_and_mat_constructor_args
(INFO) 2017-11-08 22:11:18,582 browser._LogBrowserInfo:144    set_zero_level_before_generating_mipmap
(INFO) 2017-11-08 22:11:18,582 browser._LogBrowserInfo:144    swizzle_rgba_for_async_readpixels
(INFO) 2017-11-08 22:11:18,582 browser._LogBrowserInfo:144    unfold_short_circuit_as_ternary_operation
(INFO) 2017-11-08 22:11:18,583 browser._LogBrowserInfo:144    unpack_alignment_workaround_with_unpack_buffer
(INFO) 2017-11-08 22:11:18,583 browser._LogBrowserInfo:144    unpack_image_height_workaround_with_unpack_buffer
(INFO) 2017-11-08 22:11:18,583 browser._LogBrowserInfo:144    use_intermediary_for_copy_texture_image
(INFO) 2017-11-08 22:11:18,583 browser._LogBrowserInfo:144    use_unused_standard_shared_blocks


Bisector:
https://chromium-swarm.appspot.com/task?id=39d8c1ad1255be10&refresh=10&show_raw=1
(INFO) 2017-11-15 06:02:08,548 browser._LogBrowserInfo:132  GPU device 0: VENDOR = 0x8086 (Intel), DEVICE = 0xa26
(INFO) 2017-11-15 06:02:08,548 browser._LogBrowserInfo:134  GPU Attributes:
(INFO) 2017-11-15 06:02:08,548 browser._LogBrowserInfo:136    amd_switchable      : False
(INFO) 2017-11-15 06:02:08,548 browser._LogBrowserInfo:136    basic_info_state    : 1
(INFO) 2017-11-15 06:02:08,548 browser._LogBrowserInfo:136    can_support_threaded_texture_mailbox: False
(INFO) 2017-11-15 06:02:08,548 browser._LogBrowserInfo:136    context_info_state  : 1
(INFO) 2017-11-15 06:02:08,549 browser._LogBrowserInfo:136    direct_rendering    : True
(INFO) 2017-11-15 06:02:08,549 browser._LogBrowserInfo:136    driver_date         : 
(INFO) 2017-11-15 06:02:08,549 browser._LogBrowserInfo:136    driver_vendor       : 
(INFO) 2017-11-15 06:02:08,549 browser._LogBrowserInfo:136    driver_version      : 10.22.25
(INFO) 2017-11-15 06:02:08,549 browser._LogBrowserInfo:136    encrypted_only      : False
(INFO) 2017-11-15 06:02:08,549 browser._LogBrowserInfo:136    gl_extensions       : GL_ARB_blend_func_extended GL_ARB_draw_buffers_blend GL_ARB_draw_indirect GL_ARB_ES2_compatibility GL_ARB_explicit_attrib_location GL_ARB_gpu_shader_fp64 GL_ARB_gpu_shader5 GL_ARB_instanced_arrays GL_ARB_internalformat_query GL_ARB_occlusion_query2 GL_ARB_sample_shading GL_ARB_sampler_objects GL_ARB_separate_shader_objects GL_ARB_shader_bit_encoding GL_ARB_shader_subroutine GL_ARB_shading_language_include GL_ARB_tessellation_shader GL_ARB_texture_buffer_object_rgb32 GL_ARB_texture_cube_map_array GL_ARB_texture_gather GL_ARB_texture_query_lod GL_ARB_texture_rgb10_a2ui GL_ARB_texture_storage GL_ARB_texture_swizzle GL_ARB_timer_query GL_ARB_transform_feedback2 GL_ARB_transform_feedback3 GL_ARB_vertex_attrib_64bit GL_ARB_vertex_type_2_10_10_10_rev GL_ARB_viewport_array GL_EXT_debug_label GL_EXT_debug_marker GL_EXT_framebuffer_multisample_blit_scaled GL_EXT_texture_compression_s3tc GL_EXT_texture_filter_anisotropic GL_EXT_texture_sRGB_decode GL_APPLE_client_storage GL_APPLE_container_object_shareable GL_APPLE_flush_render GL_APPLE_object_purgeable GL_APPLE_rgb_422 GL_APPLE_row_bytes GL_APPLE_texture_range GL_ATI_texture_mirror_once GL_NV_texture_barrier
(INFO) 2017-11-15 06:02:08,549 browser._LogBrowserInfo:136    gl_renderer         : Intel HD Graphics 5000 OpenGL Engine
(INFO) 2017-11-15 06:02:08,549 browser._LogBrowserInfo:136    gl_reset_notification_strategy: 0
(INFO) 2017-11-15 06:02:08,549 browser._LogBrowserInfo:136    gl_vendor           : Intel Inc.
(INFO) 2017-11-15 06:02:08,549 browser._LogBrowserInfo:136    gl_version          : 4.1 INTEL-10.22.25
(INFO) 2017-11-15 06:02:08,549 browser._LogBrowserInfo:136    gl_ws_extensions    : 
(INFO) 2017-11-15 06:02:08,549 browser._LogBrowserInfo:136    gl_ws_vendor        : 
(INFO) 2017-11-15 06:02:08,549 browser._LogBrowserInfo:136    gl_ws_version       : 
(INFO) 2017-11-15 06:02:08,549 browser._LogBrowserInfo:136    in_process_gpu      : False
(INFO) 2017-11-15 06:02:08,549 browser._LogBrowserInfo:136    initialization_time : 0.042154
(INFO) 2017-11-15 06:02:08,549 browser._LogBrowserInfo:136    jpeg_decode_accelerator_supported: False
(INFO) 2017-11-15 06:02:08,549 browser._LogBrowserInfo:136    max_framerate_denominator: 1
(INFO) 2017-11-15 06:02:08,549 browser._LogBrowserInfo:136    max_framerate_numerator: 30
(INFO) 2017-11-15 06:02:08,549 browser._LogBrowserInfo:136    max_msaa_samples    : 8
(INFO) 2017-11-15 06:02:08,549 browser._LogBrowserInfo:136    max_resolution_height: 2160
(INFO) 2017-11-15 06:02:08,549 browser._LogBrowserInfo:136    max_resolution_width: 4096
(INFO) 2017-11-15 06:02:08,550 browser._LogBrowserInfo:136    min_resolution_height: 16
(INFO) 2017-11-15 06:02:08,550 browser._LogBrowserInfo:136    min_resolution_width: 16
(INFO) 2017-11-15 06:02:08,550 browser._LogBrowserInfo:136    optimus             : False
(INFO) 2017-11-15 06:02:08,550 browser._LogBrowserInfo:136    passthrough_cmd_decoder: False
(INFO) 2017-11-15 06:02:08,550 browser._LogBrowserInfo:136    pixel_shader_version: 4.10
(INFO) 2017-11-15 06:02:08,550 browser._LogBrowserInfo:136    process_crash_count : 0
(INFO) 2017-11-15 06:02:08,550 browser._LogBrowserInfo:136    profile             : 3
(INFO) 2017-11-15 06:02:08,550 browser._LogBrowserInfo:136    sandboxed           : True
(INFO) 2017-11-15 06:02:08,550 browser._LogBrowserInfo:136    software_rendering  : False
(INFO) 2017-11-15 06:02:08,550 browser._LogBrowserInfo:136    supports_overlays   : False
(INFO) 2017-11-15 06:02:08,550 browser._LogBrowserInfo:136    vertex_shader_version: 4.10
(INFO) 2017-11-15 06:02:08,550 browser._LogBrowserInfo:136    video_decode_accelerator_flags: 0
(INFO) 2017-11-15 06:02:08,550 browser._LogBrowserInfo:138  Feature Status:
(INFO) 2017-11-15 06:02:08,550 browser._LogBrowserInfo:140    2d_canvas           : enabled
(INFO) 2017-11-15 06:02:08,551 browser._LogBrowserInfo:140    checker_imaging     : enabled_on
(INFO) 2017-11-15 06:02:08,551 browser._LogBrowserInfo:140    flash_3d            : enabled
(INFO) 2017-11-15 06:02:08,551 browser._LogBrowserInfo:140    flash_stage3d       : enabled
(INFO) 2017-11-15 06:02:08,551 browser._LogBrowserInfo:140    flash_stage3d_baseline: enabled
(INFO) 2017-11-15 06:02:08,551 browser._LogBrowserInfo:140    gpu_compositing     : enabled
(INFO) 2017-11-15 06:02:08,551 browser._LogBrowserInfo:140    multiple_raster_threads: enabled_on
(INFO) 2017-11-15 06:02:08,551 browser._LogBrowserInfo:140    native_gpu_memory_buffers: enabled
(INFO) 2017-11-15 06:02:08,551 browser._LogBrowserInfo:140    rasterization       : enabled
(INFO) 2017-11-15 06:02:08,551 browser._LogBrowserInfo:140    video_decode        : enabled
(INFO) 2017-11-15 06:02:08,551 browser._LogBrowserInfo:140    video_encode        : enabled
(INFO) 2017-11-15 06:02:08,551 browser._LogBrowserInfo:140    webgl               : enabled
(INFO) 2017-11-15 06:02:08,552 browser._LogBrowserInfo:140    webgl2              : enabled
(INFO) 2017-11-15 06:02:08,552 browser._LogBrowserInfo:142  Driver Bug Workarounds:
(INFO) 2017-11-15 06:02:08,552 browser._LogBrowserInfo:144    add_and_true_to_loop_condition
(INFO) 2017-11-15 06:02:08,552 browser._LogBrowserInfo:144    adjust_src_dst_region_for_blitframebuffer
(INFO) 2017-11-15 06:02:08,552 browser._LogBrowserInfo:144    avoid_stencil_buffers
(INFO) 2017-11-15 06:02:08,552 browser._LogBrowserInfo:144    decode_encode_srgb_for_generatemipmap
(INFO) 2017-11-15 06:02:08,552 browser._LogBrowserInfo:144    disable_framebuffer_cmaa
(INFO) 2017-11-15 06:02:08,552 browser._LogBrowserInfo:144    disable_webgl_rgb_multisampling_usage
(INFO) 2017-11-15 06:02:08,553 browser._LogBrowserInfo:144    emulate_abs_int_function
(INFO) 2017-11-15 06:02:08,553 browser._LogBrowserInfo:144    get_frag_data_info_bug
(INFO) 2017-11-15 06:02:08,553 browser._LogBrowserInfo:144    init_two_cube_map_levels_before_copyteximage
(INFO) 2017-11-15 06:02:08,553 browser._LogBrowserInfo:144    msaa_is_slow
(INFO) 2017-11-15 06:02:08,553 browser._LogBrowserInfo:144    pack_parameters_workaround_with_pack_buffer
(INFO) 2017-11-15 06:02:08,553 browser._LogBrowserInfo:144    rebind_transform_feedback_before_resume
(INFO) 2017-11-15 06:02:08,553 browser._LogBrowserInfo:144    regenerate_struct_names
(INFO) 2017-11-15 06:02:08,553 browser._LogBrowserInfo:144    remove_invariant_and_centroid_for_essl3
(INFO) 2017-11-15 06:02:08,553 browser._LogBrowserInfo:144    reset_base_mipmap_level_before_texstorage
(INFO) 2017-11-15 06:02:08,554 browser._LogBrowserInfo:144    rewrite_texelfetchoffset_to_texelfetch
(INFO) 2017-11-15 06:02:08,554 browser._LogBrowserInfo:144    scalarize_vec_and_mat_constructor_args
(INFO) 2017-11-15 06:02:08,554 browser._LogBrowserInfo:144    set_zero_level_before_generating_mipmap
(INFO) 2017-11-15 06:02:08,554 browser._LogBrowserInfo:144    swizzle_rgba_for_async_readpixels
(INFO) 2017-11-15 06:02:08,554 browser._LogBrowserInfo:144    unfold_short_circuit_as_ternary_operation
(INFO) 2017-11-15 06:02:08,554 browser._LogBrowserInfo:144    unpack_alignment_workaround_with_unpack_buffer
(INFO) 2017-11-15 06:02:08,554 browser._LogBrowserInfo:144    unpack_image_height_workaround_with_unpack_buffer
(INFO) 2017-11-15 06:02:08,554 browser._LogBrowserInfo:144    use_intermediary_for_copy_texture_image
(INFO) 2017-11-15 06:02:08,554 browser._LogBrowserInfo:144    use_unused_standard_shared_blocks

Only diff I see is that video_encode is enabled on the bisector, that shouldn't make a difference, should it?

+dtu, simonhatch in case they can think of any configuration differences.

Comment 9 by simonhatch@chromium.org, Jan 12 2018 

From the dev_console, after copy/pasting the contents of chartjson-output.json into the dev_console:

from tracing.value import histogram_set
from tracing.value.diagnostics import diagnostic
from tracing.value.diagnostics import reserved_infos
import json

d = json.loads("""contents of chartjson-output.json""")

hs = histogram_set.HistogramSet()
hs.ImportDicts(d)

h = hs.GetHistogramsNamed('draw-static-canvas-2d-to-hw-accelerated-canvas-2d')


print h[0].sample_values


outputs:
[132100.39630118903, 43140.63848144951, 102616.72652642975, 37530.493525989252, 55509.297807381728]


I kinda think this is a Pinpoint issue failing to read the values properly. I'll follow up a bit more on Monday.

Comment 10 by simonhatch@chromium.org, Jan 15 2018 

Ah, didn't notice that this is from Nov. The values reading was fixed in early December, let me just try kicking this off again.
Project Member

Comment 12 by 42576172...@developer.gserviceaccount.com, Jan 15 2018

Owner: junov@chromium.org
Status: Assigned (was: Untriaged)
📍 Found a significant difference after 1 commit.
https://pinpoint-dot-chromeperf.appspot.com/job/14e95b10840000

Reland: Refactor of Canvas2DLayerBridge resource model
By junov@chromium.org · Wed Nov 08 23:26:00 2017
chromium @ 5b07996e178c5f4e153e771d48ab839867fa7440

Understanding performance regressions:
  http://g.co/ChromePerformanceRegressions

Comment 13 by junov@chromium.org, Jan 17 2018

Status: WontFix (was: Assigned)
Performance has recovered. Most likely due to this CL:
https://chromium.googlesource.com/chromium/src/+/18d54b65156a1cbed1090b0b77773a87087c0e0b
►

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