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very slow, uses all RAM

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windows 7 pro, firefox up to date, uses 97% of RAM after a few minutes with only two tabs open, will only close if forced

windows 7 pro, firefox up to date, uses 97% of RAM after a few minutes with only two tabs open, will only close if forced

Chosen solution

A user.js file is reported in your profile folder. Check to see what software added it or the changes you applied there yourself, and temporarily run Firefox after moving it elsewhere. Is the performance similar?

And of course, check the performance in Firefox’s Safe Mode to see if one of your add-ons is causing the issue.

Read this answer in context 1

Additional System Details

Installed Plug-ins

  • Shockwave Flash 29.0 r0

Application

  • Firefox 59.0.2
  • User Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:59.0) Gecko/20100101 Firefox/59.0
  • Support URL: https://support.mozilla.org/1/firefox/59.0.2/WINNT/en-US/

Extensions

  • Ebates: The Free Cash Back Shopping Assistant 4.26.3.1 ({35d6291e-1d4b-f9b4-c52f-77e6410d1326})
  • McAfee® WebAdvisor 6.0.0.134 ({4ED1F68A-5463-4931-9384-8FFF5ED91D92})
  • Advertising Cookie Opt-out 1.6 (optout@google.com) (Inactive)

Javascript

  • incrementalGCEnabled: True

Graphics

  • adapterDescription: NVIDIA GeForce GT 610
  • adapterDescription2:
  • adapterDeviceID: 0x104a
  • adapterDeviceID2:
  • adapterDrivers: nvd3dumx,nvwgf2umx,nvwgf2umx nvd3dum,nvwgf2um,nvwgf2um
  • adapterDrivers2:
  • adapterRAM: 1024
  • adapterRAM2:
  • adapterSubsysID: 00000000
  • adapterSubsysID2:
  • adapterVendorID: 0x10de
  • adapterVendorID2:
  • clearTypeParameters: Gamma: 2.2 Pixel Structure: BGR ClearType Level: 0 Enhanced Contrast: 200
  • crashGuards: []
  • direct2DEnabled: True
  • directWriteEnabled: True
  • directWriteVersion: 6.2.9200.22164
  • driverDate: 6-17-2015
  • driverDate2:
  • driverVersion: 10.18.13.5330
  • driverVersion2:
  • featureLog: {u'fallbacks': [{u'message': u'Unsupported by driver', u'name': u'NO_CONSTANT_BUFFER_OFFSETTING'}], u'features': [{u'status': u'available', u'description': u'Compositing', u'log': [{u'status': u'available', u'type': u'default'}], u'name': u'HW_COMPOSITING'}, {u'status': u'available', u'description': u'Direct3D11 Compositing', u'log': [{u'status': u'available', u'type': u'default'}], u'name': u'D3D11_COMPOSITING'}, {u'status': u'available', u'description': u'Direct2D', u'log': [{u'status': u'available', u'type': u'default'}], u'name': u'DIRECT2D'}, {u'status': u'available', u'description': u'Direct3D11 hardware ANGLE', u'log': [{u'status': u'available', u'type': u'default'}], u'name': u'D3D11_HW_ANGLE'}, {u'status': u'available', u'description': u'GPU Process', u'log': [{u'status': u'available', u'type': u'default'}], u'name': u'GPU_PROCESS'}, {u'status': u'unavailable', u'description': u'WebRender', u'log': [{u'status': u'opt-in', u'message': u'WebRender is an opt-in feature', u'type': u'default'}, {u'status': u'unavailable', u'message': u"Build doesn't include WebRender", u'type': u'runtime'}], u'name': u'WEBRENDER'}, {u'status': u'available', u'description': u'Off Main Thread Painting', u'log': [{u'status': u'available', u'type': u'default'}], u'name': u'OMTP'}, {u'status': u'available', u'description': u'Advanced Layers', u'log': [{u'status': u'available', u'type': u'default'}, {u'status': u'available', u'message': u'Enabled for Windows 7 via user-preference', u'type': u'user'}], u'name': u'ADVANCED_LAYERS'}]}
  • info: {u'AzureContentBackend (UI Process)': u'skia', u'AzureCanvasBackend (UI Process)': u'skia', u'ApzWheelInput': 1, u'ApzDragInput': 1, u'ApzKeyboardInput': 1, u'AzureFallbackCanvasBackend (UI Process)': u'cairo', u'ApzAutoscrollInput': 1, u'AzureCanvasAccelerated': 0, u'AzureCanvasBackend': u'Direct2D 1.1', u'AzureContentBackend': u'Direct2D 1.1'}
  • isGPU2Active: False
  • numAcceleratedWindows: 1
  • numTotalWindows: 1
  • offMainThreadPaintEnabled: True
  • webgl1DriverExtensions: GL_ANGLE_client_arrays 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_program_cache_control GL_ANGLE_request_extension GL_ANGLE_robust_client_memory GL_ANGLE_robust_resource_initialization 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_color_buffer_float_rgb GL_CHROMIUM_color_buffer_float_rgba 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_compression_s3tc_srgb 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_surfaceless_context 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
  • webgl1Extensions: ANGLE_instanced_arrays EXT_blend_minmax EXT_color_buffer_half_float EXT_frag_depth EXT_sRGB 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_compressed_texture_s3tc_srgb WEBGL_debug_renderer_info WEBGL_debug_shaders WEBGL_depth_texture WEBGL_draw_buffers WEBGL_lose_context
  • webgl1Renderer: Google Inc. -- ANGLE (NVIDIA GeForce GT 610 Direct3D11 vs_5_0 ps_5_0)
  • webgl1Version: OpenGL ES 2.0 (ANGLE 2.1.0.db3422764a9b)
  • webgl1WSIInfo: EGL_VENDOR: Google Inc. (adapter LUID: 000000000000780f) EGL_VERSION: 1.4 (ANGLE 2.1.0.db3422764a9b) 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_EXT_pixel_format_float EGL_KHR_surfaceless_context EGL_ANGLE_display_texture_share_group EGL_ANGLE_create_context_client_arrays EGL_ANGLE_program_cache_control 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 EGL_ANGLE_display_robust_resource_initialization
  • webgl2DriverExtensions: GL_ANGLE_client_arrays GL_ANGLE_depth_texture GL_ANGLE_framebuffer_blit GL_ANGLE_framebuffer_multisample GL_ANGLE_instanced_arrays GL_ANGLE_lossy_etc_decode GL_ANGLE_multiview GL_ANGLE_pack_reverse_row_order GL_ANGLE_program_cache_control GL_ANGLE_request_extension GL_ANGLE_robust_client_memory GL_ANGLE_robust_resource_initialization 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_color_buffer_float_rgb GL_CHROMIUM_color_buffer_float_rgba 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_compression_s3tc_srgb 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_surfaceless_context 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
  • webgl2Extensions: EXT_color_buffer_float EXT_texture_filter_anisotropic EXT_disjoint_timer_query OES_texture_float_linear WEBGL_compressed_texture_s3tc WEBGL_compressed_texture_s3tc_srgb WEBGL_debug_renderer_info WEBGL_debug_shaders WEBGL_lose_context
  • webgl2Renderer: Google Inc. -- ANGLE (NVIDIA GeForce GT 610 Direct3D11 vs_5_0 ps_5_0)
  • webgl2Version: OpenGL ES 3.0 (ANGLE 2.1.0.db3422764a9b)
  • webgl2WSIInfo: EGL_VENDOR: Google Inc. (adapter LUID: 000000000000780f) EGL_VERSION: 1.4 (ANGLE 2.1.0.db3422764a9b) 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_EXT_pixel_format_float EGL_KHR_surfaceless_context EGL_ANGLE_display_texture_share_group EGL_ANGLE_create_context_client_arrays EGL_ANGLE_program_cache_control 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 EGL_ANGLE_display_robust_resource_initialization
  • windowLayerManagerRemote: True
  • windowLayerManagerType: Direct3D 11
  • windowUsingAdvancedLayers: True

Modified Preferences

Misc

  • User JS: Yes
  • Accessibility: No
Tonnes
  • Locale Leader
246 solutions 1454 answers

Chosen Solution

A user.js file is reported in your profile folder. Check to see what software added it or the changes you applied there yourself, and temporarily run Firefox after moving it elsewhere. Is the performance similar?

And of course, check the performance in Firefox’s Safe Mode to see if one of your add-ons is causing the issue.

A [http://kb.mozillazine.org/User.js_file user.js] file is reported in your profile folder. Check to see what software added it or the changes you applied there yourself, and temporarily run Firefox after moving it elsewhere. Is the performance similar? And of course, check the performance in Firefox’s [[Troubleshoot Firefox issues using Safe Mode|Safe Mode]] to see if one of your add-ons is causing the issue.
cor-el
  • Top 10 Contributor
  • Moderator
17416 solutions 157344 answers

Helpful Reply

Note that you may have to reset prefs that are modified/set via user.js via the right-click context menu on the about:config page to the default value.

Note that you may have to reset prefs that are modified/set via user.js via the right-click context menu on the <b>about:config</b> page to the default value.

Question owner

Tonnes said

A user.js file is reported in your profile folder. Check to see what software added it or the changes you applied there yourself, and temporarily run Firefox after moving it elsewhere. Is the performance similar? And of course, check the performance in Firefox’s Safe Mode to see if one of your add-ons is causing the issue.

moved user.js file and reset firefox, which now seems to be acting more normally - didn't see a way to check what software added it and date was two years ago, so hard to understand why this was suddenly a problem, but happy it's happy now.

''Tonnes [[#answer-1106264|said]]'' <blockquote> A [http://kb.mozillazine.org/User.js_file user.js] file is reported in your profile folder. Check to see what software added it or the changes you applied there yourself, and temporarily run Firefox after moving it elsewhere. Is the performance similar? And of course, check the performance in Firefox’s [[Troubleshoot Firefox issues using Safe Mode|Safe Mode]] to see if one of your add-ons is causing the issue. </blockquote> moved user.js file and reset firefox, which now seems to be acting more normally - didn't see a way to check what software added it and date was two years ago, so hard to understand why this was suddenly a problem, but happy it's happy now.

Question owner

cor-el said

Note that you may have to reset prefs that are modified/set via user.js via the right-click context menu on the about:config page to the default value.

thank you, I did this also, and happy to report success. This is an older desktop with only 4GB RAM, so as websites increase ad volume, places bigger burden on system, which may be part of the problem.

''cor-el [[#answer-1106397|said]]'' <blockquote> Note that you may have to reset prefs that are modified/set via user.js via the right-click context menu on the <b>about:config</b> page to the default value. </blockquote> thank you, I did this also, and happy to report success. This is an older desktop with only 4GB RAM, so as websites increase ad volume, places bigger burden on system, which may be part of the problem.
Neda 0 solutions 1 answers

Hi there! Anyone w/ the same problem?? After the latest Sep. 2018 update, FF fills the RAM to 3.5 G or more! (out of my 4 G). Only 4 tabs are open, no new thing w/ FF or my computer. Tried all the previous suggestions, no use. PC gets so slow that even mouse might not move! I don't have the user.js but deleted the java profile file and let FF make a new one, still the same! I updated Java and Flash, got a little better, but still something is wrong. Thanks

Hi there! Anyone w/ the same problem?? After the latest Sep. 2018 update, FF fills the RAM to 3.5 G or more! (out of my 4 G). Only 4 tabs are open, no new thing w/ FF or my computer. Tried all the previous suggestions, no use. PC gets so slow that even mouse might not move! I don't have the user.js but deleted the java profile file and let FF make a new one, still the same! I updated Java and Flash, got a little better, but still something is wrong. Thanks

Modified by Neda