1422436 - Firefox uses 95%+ of RAM for 1-2 hours when Restoring Previous Session (Firefox 57)

Status: RESOLVED FIXED

(WebExtensions :: General, defect)

Description

[Lman8381]

Attachment: memory-report.json.gz

User Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:57.0) Gecko/20100101 Firefox/57.0
Build ID: 20171112125346

Steps to reproduce:

After closing Firefox with approximately 320 tabs open, I reopened Firefox and used Restore Previous Session. (Attempted three times over the last 2 days.)


Actual results:

Firefox produced all of my previous tabs, but immediately began consuming 95%+ of my memory, spread over five instances of firefox.exe appearing in the task manager: three instances using between 10 and 50 Mb, one instances using between 3 and 8 Gb, and one instance using between 8 and 13 Gb (computer has 16 GB of RAM). During the first occurrence of this bug,  only the tab Firefox restored onto was responsive (could click links, scroll up and down, etc), but no other actions were possible (clicking onto other tabs, opening new tabs, opening options/help/etc.) During the second and third occurrence, Firefox eventually fully loaded after 1-2 hours of processing, during which the computer was completely unusable to to nearly all available memory being consumed. 

On the third instance, I was able to monitor the memory usage: memory usage remained at 95%+ for nearly an hour, before gradually decreasing over the course of roughly a half hour to normal levels, at which point Firefox became usable and all tabs were loaded.

About:system info pasted below:

Application Basics
------------------

Name: Firefox
Version: 57.0
Build ID: 20171112125346
Update Channel: release
User Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:57.0) Gecko/20100101 Firefox/57.0
OS: Windows_NT 6.1
Multiprocess Windows: 1/1 (Enabled by default)
Web Content Processes: 3/4
Stylo: true (enabled by default)
Google Key: Found
Mozilla Location Service Key: Found
Safe Mode: false

Crash Reports for the Last 3 Days
---------------------------------

All Crash Reports (including 1 pending crash in the given time range)

Firefox Features
----------------

Name: Activity Stream
Version: 2017.11.07.1100-7f4e3634
ID: [e-mail]

Name: Application Update Service Helper
Version: 2.0
ID: [e-mail]

Name: Disable Media WMF NV12 format
Version: 1.1
ID: [e-mail]

Name: Firefox Screenshots
Version: 19.2.0
ID: [e-mail]

Name: Follow-on Search Telemetry
Version: 0.9.6
ID: [e-mail]

Name: Form Autofill
Version: 1.0
ID: [e-mail]

Name: Multi-process staged rollout
Version: 3.05
ID: [e-mail]

Name: Photon onboarding
Version: 1.0
ID: [e-mail]

Name: Pocket
Version: 1.0.5
ID: [e-mail]

Name: Shield Recipe Client
Version: 76.1
ID: [e-mail]

Name: Web Compat
Version: 1.1
ID: [e-mail]

Extensions
----------

Name: Flash Video Downloader
Version: 16.0.5
Enabled: true
ID: [e-mail]

Name: MEGA
Version: 3.20.4
Enabled: true
ID: [e-mail]

Name: NoScript
Version: 10.1.5
Enabled: true
ID: {73a6fe31-595d-460b-a920-fcc0f8843232}

Name: OneTab
Version: 1.25
Enabled: true
ID: [e-mail]

Name: Tab Session Manager
Version: 1.6.1
Enabled: true
ID: Tab-Session-Manager@sienori

Name: Ace Stream Web Extension
Version: 1.0.2
Enabled: false
ID: [e-mail]

Name: DownThemAll!
Version: 3.0.8
Enabled: false
ID: {DDC359D1-844A-42a7-9AA1-88A850A938A8}

Name: Tab Mix Plus
Version: 0.5.0.4
Enabled: false
ID: {dc572301-7619-498c-a57d-39143191b318}

Name: TabGroups Menu
Version: 0.9.9
Enabled: false
ID: [e-mail]

Name: Toggle animated GIFs
Version: 1.3.1
Enabled: false
ID: [e-mail]

Graphics
--------

Features
Compositing: Direct3D 11 (Advanced Layers)
Asynchronous Pan/Zoom: wheel input enabled; scrollbar drag enabled; keyboard enabled; autoscroll enabled
WebGL 1 Driver WSI Info: EGL_VENDOR: Google Inc. (adapter LUID: 000000000000d1b0) EGL_VERSION: 1.4 (ANGLE 2.1.0.dec065540d5f) EGL_EXTENSIONS: EGL_EXT_create_context_robustness EGL_ANGLE_d3d_share_handle_client_buffer EGL_ANGLE_d3d_texture_client_buffer EGL_ANGLE_surface_d3d_texture_2d_share_handle EGL_ANGLE_query_surface_pointer EGL_ANGLE_window_fixed_size EGL_ANGLE_keyed_mutex EGL_ANGLE_surface_orientation EGL_NV_post_sub_buffer EGL_KHR_create_context EGL_EXT_device_query EGL_KHR_image EGL_KHR_image_base EGL_KHR_gl_texture_2D_image EGL_KHR_gl_texture_cubemap_image EGL_KHR_gl_renderbuffer_image EGL_KHR_get_all_proc_addresses EGL_KHR_stream EGL_KHR_stream_consumer_gltexture EGL_NV_stream_consumer_gltexture_yuv EGL_ANGLE_flexible_surface_compatibility EGL_ANGLE_create_context_webgl_compatibility EGL_CHROMIUM_create_context_bind_generates_resource EGL_EXTENSIONS(nullptr): EGL_EXT_client_extensions EGL_EXT_platform_base EGL_EXT_platform_device EGL_ANGLE_platform_angle EGL_ANGLE_platform_angle_d3d EGL_ANGLE_device_creation EGL_ANGLE_device_creation_d3d11 EGL_ANGLE_experimental_present_path EGL_KHR_client_get_all_proc_addresses
WebGL 1 Driver Renderer: Google Inc. -- ANGLE (NVIDIA GeForce GTX 960 Direct3D11 vs_5_0 ps_5_0)
WebGL 1 Driver Version: OpenGL ES 2.0 (ANGLE 2.1.0.dec065540d5f)
WebGL 1 Driver Extensions: GL_ANGLE_depth_texture GL_ANGLE_framebuffer_blit GL_ANGLE_framebuffer_multisample GL_ANGLE_instanced_arrays GL_ANGLE_lossy_etc_decode GL_ANGLE_pack_reverse_row_order GL_ANGLE_request_extension GL_ANGLE_robust_client_memory GL_ANGLE_texture_compression_dxt3 GL_ANGLE_texture_compression_dxt5 GL_ANGLE_texture_usage GL_ANGLE_translated_shader_source GL_CHROMIUM_bind_generates_resource GL_CHROMIUM_bind_uniform_location GL_CHROMIUM_copy_compressed_texture GL_CHROMIUM_copy_texture GL_CHROMIUM_sync_query GL_EXT_blend_minmax GL_EXT_color_buffer_half_float GL_EXT_debug_marker GL_EXT_discard_framebuffer GL_EXT_disjoint_timer_query GL_EXT_draw_buffers GL_EXT_frag_depth GL_EXT_map_buffer_range GL_EXT_occlusion_query_boolean GL_EXT_read_format_bgra GL_EXT_robustness GL_EXT_sRGB GL_EXT_shader_texture_lod GL_EXT_texture_compression_dxt1 GL_EXT_texture_filter_anisotropic GL_EXT_texture_format_BGRA8888 GL_EXT_texture_rg GL_EXT_texture_storage GL_EXT_unpack_subimage GL_KHR_debug GL_NV_EGL_stream_consumer_external GL_NV_fence GL_NV_pack_subimage GL_NV_pixel_buffer_object GL_OES_EGL_image GL_OES_EGL_image_external GL_OES_compressed_ETC1_RGB8_texture GL_OES_depth32 GL_OES_element_index_uint GL_OES_get_program_binary GL_OES_mapbuffer GL_OES_packed_depth_stencil GL_OES_rgb8_rgba8 GL_OES_standard_derivatives GL_OES_texture_float GL_OES_texture_float_linear GL_OES_texture_half_float GL_OES_texture_half_float_linear GL_OES_texture_npot GL_OES_vertex_array_object
WebGL 1 Extensions: ANGLE_instanced_arrays EXT_blend_minmax EXT_color_buffer_half_float EXT_frag_depth EXT_shader_texture_lod EXT_texture_filter_anisotropic EXT_disjoint_timer_query OES_element_index_uint OES_standard_derivatives OES_texture_float OES_texture_float_linear OES_texture_half_float OES_texture_half_float_linear OES_vertex_array_object WEBGL_color_buffer_float WEBGL_compressed_texture_s3tc WEBGL_debug_renderer_info WEBGL_debug_shaders WEBGL_depth_texture WEBGL_draw_buffers WEBGL_lose_context MOZ_WEBGL_lose_context MOZ_WEBGL_compressed_texture_s3tc MOZ_WEBGL_depth_texture
WebGL 2 Driver WSI Info: EGL_VENDOR: Google Inc. (adapter LUID: 000000000000d1b0) EGL_VERSION: 1.4 (ANGLE 2.1.0.dec065540d5f) EGL_EXTENSIONS: EGL_EXT_create_context_robustness EGL_ANGLE_d3d_share_handle_client_buffer EGL_ANGLE_d3d_texture_client_buffer EGL_ANGLE_surface_d3d_texture_2d_share_handle EGL_ANGLE_query_surface_pointer EGL_ANGLE_window_fixed_size EGL_ANGLE_keyed_mutex EGL_ANGLE_surface_orientation EGL_NV_post_sub_buffer EGL_KHR_create_context EGL_EXT_device_query EGL_KHR_image EGL_KHR_image_base EGL_KHR_gl_texture_2D_image EGL_KHR_gl_texture_cubemap_image EGL_KHR_gl_renderbuffer_image EGL_KHR_get_all_proc_addresses EGL_KHR_stream EGL_KHR_stream_consumer_gltexture EGL_NV_stream_consumer_gltexture_yuv EGL_ANGLE_flexible_surface_compatibility EGL_ANGLE_create_context_webgl_compatibility EGL_CHROMIUM_create_context_bind_generates_resource EGL_EXTENSIONS(nullptr): EGL_EXT_client_extensions EGL_EXT_platform_base EGL_EXT_platform_device EGL_ANGLE_platform_angle EGL_ANGLE_platform_angle_d3d EGL_ANGLE_device_creation EGL_ANGLE_device_creation_d3d11 EGL_ANGLE_experimental_present_path EGL_KHR_client_get_all_proc_addresses
WebGL 2 Driver Renderer: Google Inc. -- ANGLE (NVIDIA GeForce GTX 960 Direct3D11 vs_5_0 ps_5_0)
WebGL 2 Driver Version: OpenGL ES 3.0 (ANGLE 2.1.0.dec065540d5f)
WebGL 2 Driver Extensions: GL_ANGLE_depth_texture GL_ANGLE_framebuffer_blit GL_ANGLE_framebuffer_multisample GL_ANGLE_instanced_arrays GL_ANGLE_lossy_etc_decode GL_ANGLE_pack_reverse_row_order GL_ANGLE_request_extension GL_ANGLE_robust_client_memory GL_ANGLE_texture_compression_dxt3 GL_ANGLE_texture_compression_dxt5 GL_ANGLE_texture_usage GL_ANGLE_translated_shader_source GL_CHROMIUM_bind_generates_resource GL_CHROMIUM_bind_uniform_location GL_CHROMIUM_copy_compressed_texture GL_CHROMIUM_copy_texture GL_CHROMIUM_sync_query GL_EXT_blend_minmax GL_EXT_color_buffer_float GL_EXT_color_buffer_half_float GL_EXT_debug_marker GL_EXT_discard_framebuffer GL_EXT_disjoint_timer_query GL_EXT_draw_buffers GL_EXT_frag_depth GL_EXT_map_buffer_range GL_EXT_occlusion_query_boolean GL_EXT_read_format_bgra GL_EXT_robustness GL_EXT_sRGB GL_EXT_shader_texture_lod GL_EXT_texture_compression_dxt1 GL_EXT_texture_filter_anisotropic GL_EXT_texture_format_BGRA8888 GL_EXT_texture_norm16 GL_EXT_texture_rg GL_EXT_texture_storage GL_EXT_unpack_subimage GL_KHR_debug GL_NV_EGL_stream_consumer_external GL_NV_fence GL_NV_pack_subimage GL_NV_pixel_buffer_object GL_OES_EGL_image GL_OES_EGL_image_external GL_OES_EGL_image_external_essl3 GL_OES_compressed_ETC1_RGB8_texture GL_OES_depth32 GL_OES_element_index_uint GL_OES_get_program_binary GL_OES_mapbuffer GL_OES_packed_depth_stencil GL_OES_rgb8_rgba8 GL_OES_standard_derivatives GL_OES_texture_float GL_OES_texture_float_linear GL_OES_texture_half_float GL_OES_texture_half_float_linear GL_OES_texture_npot GL_OES_vertex_array_object
WebGL 2 Extensions: EXT_color_buffer_float EXT_texture_filter_anisotropic EXT_disjoint_timer_query OES_texture_float_linear WEBGL_compressed_texture_s3tc WEBGL_debug_renderer_info WEBGL_debug_shaders WEBGL_lose_context MOZ_WEBGL_lose_context MOZ_WEBGL_compressed_texture_s3tc
Direct2D: true
DirectWrite: true (6.2.9200.22164)
GPU #1
Active: Yes
Description: NVIDIA GeForce GTX 960
Vendor ID: 0x10de
Device ID: 0x1401
Driver Version: 21.21.13.7270
Driver Date: 8-25-2016
Drivers: nvd3dumx,nvwgf2umx,nvwgf2umx nvd3dum,nvwgf2um,nvwgf2um
Subsys ID: 39673842
RAM: 4096
GPU #2
Active: No
Description: Intel(R) HD Graphics Family
Vendor ID: 0x8086
Device ID: 0x0112
Driver Version: 8.15.10.2559
Driver Date: 10-21-2011
Drivers: igdumd64 igd10umd64 igd10umd64 igdumdx32 igd10umd32 igd10umd32
Subsys ID: 0000000c
RAM: Unknown
Diagnostics
ClearType Parameters: DISPLAY1 [ Gamma: 2.2 Pixel Structure: RGB ClearType Level: 100 Enhanced Contrast: 300 ] DISPLAY2 [ Gamma: 2.2 Pixel Structure: RGB ClearType Level: 100 Enhanced Contrast: 400 ]
AzureCanvasAccelerated: 0
AzureCanvasBackend: Direct2D 1.1
AzureCanvasBackend (UI Process): skia
AzureContentBackend: Direct2D 1.1
AzureContentBackend (UI Process): skia
AzureFallbackCanvasBackend (UI Process): cairo
GPUProcessPid: 8700
ClearType Parameters: DISPLAY1 [ Gamma: 2.2 Pixel Structure: RGB ClearType Level: 100 Enhanced Contrast: 300 ] DISPLAY2 [ Gamma: 2.2 Pixel Structure: RGB ClearType Level: 100 Enhanced Contrast: 400 ]
Decision Log
WEBRENDER:
opt-in by default: WebRender is an opt-in feature
unavailable by runtime: Build doesn't include WebRender
ADVANCED_LAYERS:
available by user: Enabled for Windows 7 via user-preference

Workarounds
NO_CONSTANT_BUFFER_OFFSETTING: Unsupported by driver


Media
-----

Audio Backend: wasapi
Max Channels: 2
Preferred Channel Layout: stereo
Preferred Sample Rate: 44100
Output Devices
Name: Group
NVIDIA HDMI Output (Port 2) (NVIDIA High Definition Audio): HDAUDIO\FUNC_01&VEN_10DE&DEV_0072&SUBSYS_38423967&REV_1001\5&30713879&0&0001
Headset Earphone (Microsoft LifeChat LX-3000 ): USB\VID_045E&PID_070F&MI_00\7&1f4d261f&0&0000
Realtek Digital Output(Optical) (Realtek High Definition Audio): HDAUDIO\FUNC_01&VEN_10EC&DEV_0889&SUBSYS_1458A102&REV_1000\4&2f158155&0&0201
Realtek Digital Output (Realtek High Definition Audio): HDAUDIO\FUNC_01&VEN_10EC&DEV_0889&SUBSYS_1458A102&REV_1000\4&2f158155&0&0201
Digital Audio (HDMI) (2- High Definition Audio Device): HDAUDIO\FUNC_01&VEN_8086&DEV_2805&SUBSYS_80860101&REV_1000\4&2f158155&0&0301
Speakers (Realtek High Definition Audio): HDAUDIO\FUNC_01&VEN_10EC&DEV_0889&SUBSYS_1458A102&REV_1000\4&2f158155&0&0201
NVIDIA HDMI Output (Port 1) (NVIDIA High Definition Audio): HDAUDIO\FUNC_01&VEN_10DE&DEV_0072&SUBSYS_38423967&REV_1001\5&30713879&0&0001
Headset Earphone (5- Microsoft LifeChat LX-3000 ): USB\VID_045E&PID_070F&MI_00\7&3206d6c4&0&0000
Realtek HD Audio 2nd output (Realtek High Definition Audio): HDAUDIO\FUNC_01&VEN_10EC&DEV_0889&SUBSYS_1458A102&REV_1000\4&2f158155&0&0201
NVIDIA HDMI Output (Port 3) (NVIDIA High Definition Audio): HDAUDIO\FUNC_01&VEN_10DE&DEV_0072&SUBSYS_38423967&REV_1001\5&30713879&0&0001
Headset Earphone (3- Microsoft LifeChat LX-3000 ): USB\VID_045E&PID_070F&MI_00\7&30b606c&0&0000
AMD HDMI Output (AMD High Definition Audio Device): HDAUDIO\FUNC_01&VEN_1002&DEV_AA01&SUBSYS_00AA0100&REV_1002\5&1bfeba93&0&0001
R240HY-C (NVIDIA High Definition Audio): HDAUDIO\FUNC_01&VEN_10DE&DEV_0072&SUBSYS_38423967&REV_1001\5&30713879&0&0001
Input Devices
Name: Group
Internal AUX Jack (NVIDIA High Definition Audio): HDAUDIO\FUNC_01&VEN_10DE&DEV_0072&SUBSYS_38423967&REV_1001\5&30713879&0&0001
Rear Blue In (Realtek High Definition Audio): HDAUDIO\FUNC_01&VEN_10EC&DEV_0889&SUBSYS_1458A102&REV_1000\4&2f158155&0&0201
Rear Orange In (Realtek High Definition Audio): HDAUDIO\FUNC_01&VEN_10EC&DEV_0889&SUBSYS_1458A102&REV_1000\4&2f158155&0&0201
Rear Pink In (Realtek High Definition Audio): HDAUDIO\FUNC_01&VEN_10EC&DEV_0889&SUBSYS_1458A102&REV_1000\4&2f158155&0&0201
Front Pink In (Realtek High Definition Audio): HDAUDIO\FUNC_01&VEN_10EC&DEV_0889&SUBSYS_1458A102&REV_1000\4&2f158155&0&0201
Headset Microphone (Microsoft LifeChat LX-3000 ): USB\VID_045E&PID_070F&MI_00\7&1f4d261f&0&0000
Rear Black In (Realtek High Definition Audio): HDAUDIO\FUNC_01&VEN_10EC&DEV_0889&SUBSYS_1458A102&REV_1000\4&2f158155&0&0201
Internal AUX Jack (NVIDIA High Definition Audio): HDAUDIO\FUNC_01&VEN_10DE&DEV_0072&SUBSYS_38423967&REV_1001\5&30713879&0&0001
Subwoofer (Realtek High Definition Audio): HDAUDIO\FUNC_01&VEN_10EC&DEV_0889&SUBSYS_1458A102&REV_1000\4&2f158155&0&0201
Headset Microphone (3- Microsoft LifeChat LX-3000 ): USB\VID_045E&PID_070F&MI_00\7&30b606c&0&0000
Front Green In (Realtek High Definition Audio): HDAUDIO\FUNC_01&VEN_10EC&DEV_0889&SUBSYS_1458A102&REV_1000\4&2f158155&0&0201
Rear Grey In (Realtek High Definition Audio): HDAUDIO\FUNC_01&VEN_10EC&DEV_0889&SUBSYS_1458A102&REV_1000\4&2f158155&0&0201
Rear Green In (Realtek High Definition Audio): HDAUDIO\FUNC_01&VEN_10EC&DEV_0889&SUBSYS_1458A102&REV_1000\4&2f158155&0&0201
Headset Microphone (5- Microsoft LifeChat LX-3000 ): USB\VID_045E&PID_070F&MI_00\7&3206d6c4&0&0000
Center (Realtek High Definition Audio): HDAUDIO\FUNC_01&VEN_10EC&DEV_0889&SUBSYS_1458A102&REV_1000\4&2f158155&0&0201
Side (Realtek High Definition Audio): HDAUDIO\FUNC_01&VEN_10EC&DEV_0889&SUBSYS_1458A102&REV_1000\4&2f158155&0&0201
Microphone (Realtek High Definition Audio): HDAUDIO\FUNC_01&VEN_10EC&DEV_0889&SUBSYS_1458A102&REV_1000\4&2f158155&0&0201
Stereo Mix (Realtek High Definition Audio): HDAUDIO\FUNC_01&VEN_10EC&DEV_0889&SUBSYS_1458A102&REV_1000\4&2f158155&0&0201
Front (Realtek High Definition Audio): HDAUDIO\FUNC_01&VEN_10EC&DEV_0889&SUBSYS_1458A102&REV_1000\4&2f158155&0&0201
Rear (Realtek High Definition Audio): HDAUDIO\FUNC_01&VEN_10EC&DEV_0889&SUBSYS_1458A102&REV_1000\4&2f158155&0&0201
Internal AUX Jack (2- High Definition Audio Device): HDAUDIO\FUNC_01&VEN_8086&DEV_2805&SUBSYS_80860101&REV_1000\4&2f158155&0&0301
Line In (Realtek High Definition Audio): HDAUDIO\FUNC_01&VEN_10EC&DEV_0889&SUBSYS_1458A102&REV_1000\4&2f158155&0&0201
AMD HDMI Output (AMD High Definition Audio Device): HDAUDIO\FUNC_01&VEN_1002&DEV_AA01&SUBSYS_00AA0100&REV_1002\5&1bfeba93&0&0001
Internal AUX Jack (NVIDIA High Definition Audio): HDAUDIO\FUNC_01&VEN_10DE&DEV_0072&SUBSYS_38423967&REV_1001\5&30713879&0&0001

Important Modified Preferences
------------------------------

accessibility.typeaheadfind.flashBar: 0
browser.cache.disk.capacity: 358400
browser.cache.disk.filesystem_reported: 1
browser.cache.disk.hashstats_reported: 1
browser.cache.disk.smart_size_cached_value: 358400
browser.cache.disk.smart_size.first_run: false
browser.cache.disk.smart_size.use_old_max: false
browser.cache.frecency_experiment: 4
browser.download.useDownloadDir: false
browser.places.smartBookmarksVersion: 8
browser.search.useDBForOrder: true
browser.sessionstore.restore_pinned_tabs_on_demand: true
browser.sessionstore.resume_from_crash: false
browser.sessionstore.upgradeBackup.latestBuildID: 20171112125346
browser.startup.homepage: about:home
browser.startup.homepage_override.buildID: 20171112125346
browser.startup.homepage_override.mstone: 57.0
browser.tabs.remote.autostart.2: true
browser.urlbar.searchSuggestionsChoice: false
browser.urlbar.suggest.searches: false
browser.urlbar.userMadeSearchSuggestionsChoice: true
dom.apps.lastUpdate.buildID: 20161019084923
dom.apps.lastUpdate.mstone: 49.0.2
dom.apps.reset-permissions: true
dom.ipc.processCount.web: 4
dom.max_chrome_script_run_time: 40
dom.max_script_run_time: 40
dom.mozApps.used: true
dom.w3c_touch_events.expose: false
extensions.lastAppVersion: 57.0
font.internaluseonly.changed: true
gfx.crash-guard.d3d11layers.appVersion: 56.0.2
gfx.crash-guard.d3d11layers.deviceID: 0x1401
gfx.crash-guard.d3d11layers.driverVersion: 21.21.13.7270
gfx.crash-guard.d3d11layers.feature-d2d: true
gfx.crash-guard.d3d11layers.feature-d3d11: true
gfx.crash-guard.glcontext.gfx.driver-init.direct3d11-angle: true
gfx.crash-guard.glcontext.gfx.driver-init.webgl-angle: true
gfx.crash-guard.glcontext.gfx.driver-init.webgl-angle-force-d3d11: false
gfx.crash-guard.glcontext.gfx.driver-init.webgl-angle-force-warp: false
gfx.crash-guard.glcontext.gfx.driver-init.webgl-angle-try-d3d11: true
gfx.crash-guard.status.d3d11layers: 2
gfx.crash-guard.status.d3d9video: 2
gfx.crash-guard.status.glcontext: 2
gfx.direct3d.last_used_feature_level_idx: 0
gfx.direct3d.prefer_10_1: true
gfx.driver-init.appVersion: 42.0
gfx.driver-init.deviceID: 0x6739
gfx.driver-init.driverVersion: 9.12.0.0
gfx.driver-init.feature-d2d: true
gfx.driver-init.feature-d3d11: true
gfx.driver-init.status: 2
keyword.URL: http://startsear.ch/?aff=2&src=sp&cf=e8da8956-35b1-11e1-a2ca-50e5495bf8e5&q=
layers.mlgpu.sanity-test-failed: false
media.benchmark.vp9.fps: 165
media.benchmark.vp9.versioncheck: 2
media.gmp-eme-adobe.abi: x86-msvc-x64
media.gmp-eme-adobe.lastUpdate: 1463837538
media.gmp-eme-adobe.version: 17
media.gmp-gmpopenh264.abi: x86_64-msvc-x64
media.gmp-gmpopenh264.lastUpdate: 1510323379
media.gmp-gmpopenh264.version: 1.7.1
media.gmp-manager.buildID: 20171112125346
media.gmp-manager.lastCheck: 1512104863
media.gmp-widevinecdm.abi: x86_64-msvc-x64
media.gmp-widevinecdm.lastUpdate: 1508532551
media.gmp-widevinecdm.version: 1.4.8.1008
media.gmp.storage.version.observed: 1
media.hardware-video-decoding.failed: false
media.webrtc.debug.aec_log_dir: C:\Users\Jesse\AppData\Local\Temp
media.webrtc.debug.log_file: C:\Users\Jesse\AppData\Local\Temp\WebRTC.log
network.auth.allow-subresource-auth: 2
network.cookie.prefsMigrated: true
network.predictor.cleaned-up: true
places.database.lastMaintenance: 1512025705
places.history.expiration.transient_current_max_pages: 163840
plugin.disable_full_page_plugin_for_types: application/pdf
plugin.importedState: true
plugins.ctprollout.cohort: test
plugins.ctprollout.cohortSample: 0.303060
print.printer_HP_Deskjet_3920/3940.print_bgcolor: false
print.printer_HP_Deskjet_3920/3940.print_bgimages: false
print.printer_HP_Deskjet_3920/3940.print_colorspace:
print.printer_HP_Deskjet_3920/3940.print_command:
print.printer_HP_Deskjet_3920/3940.print_downloadfonts: false
print.printer_HP_Deskjet_3920/3940.print_duplex: 548089600
print.printer_HP_Deskjet_3920/3940.print_edge_bottom: 0
print.printer_HP_Deskjet_3920/3940.print_edge_left: 0
print.printer_HP_Deskjet_3920/3940.print_edge_right: 0
print.printer_HP_Deskjet_3920/3940.print_edge_top: 0
print.printer_HP_Deskjet_3920/3940.print_evenpages: true
print.printer_HP_Deskjet_3920/3940.print_footercenter:
print.printer_HP_Deskjet_3920/3940.print_footerleft: &PT
print.printer_HP_Deskjet_3920/3940.print_footerright: &D
print.printer_HP_Deskjet_3920/3940.print_headercenter:
print.printer_HP_Deskjet_3920/3940.print_headerleft: &T
print.printer_HP_Deskjet_3920/3940.print_headerright: &U
print.printer_HP_Deskjet_3920/3940.print_in_color: true
print.printer_HP_Deskjet_3920/3940.print_margin_bottom: 0.5
print.printer_HP_Deskjet_3920/3940.print_margin_left: 0.5
print.printer_HP_Deskjet_3920/3940.print_margin_right: 0.5
print.printer_HP_Deskjet_3920/3940.print_margin_top: 0.5
print.printer_HP_Deskjet_3920/3940.print_oddpages: true
print.printer_HP_Deskjet_3920/3940.print_orientation: 0
print.printer_HP_Deskjet_3920/3940.print_page_delay: 50
print.printer_HP_Deskjet_3920/3940.print_paper_data: 1
print.printer_HP_Deskjet_3920/3940.print_paper_height: 11.00
print.printer_HP_Deskjet_3920/3940.print_paper_name:
print.printer_HP_Deskjet_3920/3940.print_paper_size_type: 0
print.printer_HP_Deskjet_3920/3940.print_paper_size_unit: 0
print.printer_HP_Deskjet_3920/3940.print_paper_width: 8.50
print.printer_HP_Deskjet_3920/3940.print_plex_name:
print.printer_HP_Deskjet_3920/3940.print_resolution: 0
print.printer_HP_Deskjet_3920/3940.print_resolution_name:
print.printer_HP_Deskjet_3920/3940.print_reversed: false
print.printer_HP_Deskjet_3920/3940.print_scaling: 1.00
print.printer_HP_Deskjet_3920/3940.print_shrink_to_fit: true
print.printer_HP_Deskjet_3920/3940.print_to_file: false
print.printer_HP_Deskjet_3920/3940.print_unwriteable_margin_bottom: 0
print.printer_HP_Deskjet_3920/3940.print_unwriteable_margin_left: 0
print.printer_HP_Deskjet_3920/3940.print_unwriteable_margin_right: 0
print.printer_HP_Deskjet_3920/3940.print_unwriteable_margin_top: 0
privacy.sanitize.migrateClearSavedPwdsOnExit: true
privacy.sanitize.migrateFx3Prefs: true
security.sandbox.content.tempDirSuffix: {7bb64bef-daba-4c9c-829d-b078a433b372}
security.ssl.errorReporting.automatic: true
security.warn_viewing_mixed: false
services.sync.declinedEngines:
storage.vacuum.last.index: 1
storage.vacuum.last.places.sqlite: 1511766491
storage.vacuum.last.queue.sqlite: 1509605516

Important Locked Preferences
----------------------------

Places Database
---------------

JavaScript
----------

Incremental GC: true

Accessibility
-------------

Activated: false
Prevent Accessibility: 0
Accessible Handler Used: true
Accessibility Instantiator:

Library Versions
----------------

NSPR
Expected minimum version: 4.17
Version in use: 4.17

NSS
Expected minimum version: 3.33
Version in use: 3.33

NSSSMIME
Expected minimum version: 3.33
Version in use: 3.33

NSSSSL
Expected minimum version: 3.33
Version in use: 3.33

NSSUTIL
Expected minimum version: 3.33
Version in use: 3.33

Experimental Features
---------------------

Sandbox
-------

Content Process Sandbox Level: 3
Effective Content Process Sandbox Level: 3



Expected results:

Firefox loads all tabs in a timely manner, without consuming all available system memory for 1-2 hours and paralyzing the whole system.

Comment 1

[Lman8381]

If there is any other info I can provide that would be useful in tracking down this bug, please let me know, and I will try to provide it (as this bug is reliably replicable for me, unfortunately.)

Comment 2

[:Gijs (he/him)]

Reporter: Have you tried if you can reproduce this issue with all your add-ons disabled? It's possible one of them is behaving pathologically based on the number of tabs... If you don't see this with all add-ons disabled, you can try re-enabling them one-by-one to see which add-on (or combination of add-ons) is the culprit.

If this reproduces without the add-ons, can you try using the profiler from https://perf-html.io/ and share a perf profile via that site, posting the link here?


Mike: is there anything else that would help track this down?

Comment 3

[Lman8381]

(In reply to :Gijs from comment #2)
> Reporter: Have you tried if you can reproduce this issue with all your
> add-ons disabled? It's possible one of them is behaving pathologically based
> on the number of tabs... If you don't see this with all add-ons disabled,
> you can try re-enabling them one-by-one to see which add-on (or combination
> of add-ons) is the culprit.
> 
> If this reproduces without the add-ons, can you try using the profiler from
> https://perf-html.io/ and share a perf profile via that site, posting the
> link here?
> 
> 
> Mike: is there anything else that would help track this down?

I'll test it with add-ons disabled tomorrow and report back.

Comment 4

[Mike Conley (:mconley) (:⚙️)]

I'm also interested in knowing what happens if you disable Accessibility access.

You can do this by putting about:preferences in your URL bar, typing "access" in the search bar at the top of the preferences page, and checking "Prevent accessibility services from accessing your browser".

If that works, we might want to know more about third-party software (anti-virus, accessibility, remote desktop, etc) that you might be running at the same time as Firefox when this problem occurs.

Comment 5

[Lman8381]

(In reply to :Gijs from comment #2)
> Reporter: Have you tried if you can reproduce this issue with all your
> add-ons disabled? It's possible one of them is behaving pathologically based
> on the number of tabs... If you don't see this with all add-ons disabled,
> you can try re-enabling them one-by-one to see which add-on (or combination
> of add-ons) is the culprit.
> 
> If this reproduces without the add-ons, can you try using the profiler from
> https://perf-html.io/ and share a perf profile via that site, posting the
> link here?
> 
> 
> Mike: is there anything else that would help track this down?

Eureka! When I disable Tab Session Manager (version 1.6.1), everything works fine. When I re-enabled it, my computer started choking again when I started to restore tabs.

Anything else info I can provide?

Comment 6

[:Gijs (he/him)]

(In reply to Lman8381 from comment #5)
> (In reply to :Gijs from comment #2)
> > Reporter: Have you tried if you can reproduce this issue with all your
> > add-ons disabled? It's possible one of them is behaving pathologically based
> > on the number of tabs... If you don't see this with all add-ons disabled,
> > you can try re-enabling them one-by-one to see which add-on (or combination
> > of add-ons) is the culprit.
> > 
> > If this reproduces without the add-ons, can you try using the profiler from
> > https://perf-html.io/ and share a perf profile via that site, posting the
> > link here?
> > 
> > 
> > Mike: is there anything else that would help track this down?
> 
> Eureka! When I disable Tab Session Manager (version 1.6.1), everything works
> fine. When I re-enabled it, my computer started choking again when I started
> to restore tabs.

Andreas, can you relay this to the add-on dev?

> Anything else info I can provide?

Not sure right now. Would be interesting to see if replacing the session store file you restore from with a "dummy" with all the urls and titles etc. replaced (for privacy) reasons reproduces, and if so, attaching that file. But the add-on dev is probably the best person to respond to this...

Comment 7

[Andreas Wagner [:TheOne] [use NI]]

> Andreas, can you relay this to the add-on dev?

Done.

Comment 8

[Andreas Wagner [:TheOne] [use NI]]

The developer replied that they will address the issue. We expect that to happen in the next update.

Comment 9

[Lman8381]

Much obliged for all the help!

Comment 10

[Sienori]

Please turn off the following option in Tab Session Manager.
"Save the session when window was closed"
When this option is checked, the session is internally saved every time a tab is opened.

Comment 11

[:Gijs (he/him)]

(In reply to Sienori from comment #10)
> Please turn off the following option in Tab Session Manager.
> "Save the session when window was closed"
> When this option is checked, the session is internally saved every time a
> tab is opened.

Can you debounce/throttle this so that the result isn't this bad if that option is ticked? The symptoms reported here are pretty bad...

Comment 12

[Sienori]

(In reply to :Gijs from comment #11)
> (In reply to Sienori from comment #10)
> > Please turn off the following option in Tab Session Manager.
> > "Save the session when window was closed"
> > When this option is checked, the session is internally saved every time a
> > tab is opened.
> 
> Can you debounce/throttle this so that the result isn't this bad if that
> option is ticked? The symptoms reported here are pretty bad...

I will fix it in the next version within a few days.
I apologize for any inconvenience...

Comment 13

[:Gijs (he/him)]

(In reply to Sienori from comment #12)
> I will fix it in the next version within a few days.
> I apologize for any inconvenience...

Great, thank you!

Comment 14

[Sienori]

I fixed this issue in Tab Session Manager version 1.7.0.
Thanks.

Comment 15

[:Gijs (he/him)]

(In reply to Sienori from comment #14)
> I fixed this issue in Tab Session Manager version 1.7.0.
> Thanks.

Going to mark this FIXED as per comment 14. \o/

Comment 16

[eemail.ds]

I still have this issue in combination with Tab Session Manager, but it happens only after the crash that results in Restore Session dialogue on next startup (here's a screenshot I found online, because, for the life of me, I can't get it to crash that way now, https://prod-cdn.sumo.mozilla.net/uploads/images/2018-01-30-17-17-05-633de4.png).

The regular crash, after which the tabs are automatically restored, as well as the normal exit–startup routine (both with automatic and manual session restore setting) work just fine.

So I was wondering if there's anything that the browser does differently under the hood when restoring a session from the Restore Session dialogue?