Serious memory leak in PM 34.0.0

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Stargate38
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Posts: 96
Joined: 2018-05-27, 22:55
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Serious memory leak in PM 34.0.0

Post by Stargate38 » 2026-01-20, 23:53

Operating system: Windows 10 Home 22H2, 64-bit, Build 19045.6809
Browser version: 34.0.0
32-bit or 64-bit browser?: 32-bit
Problem URL: https://www.mersenneforum.org/
Browser theme (if not default): Moonscape 7.4.0
Installed add-ons: See troubleshooting info below
Installed plugins: (about:plugins): (All disabled atm, but I'll still list them) Adobe Flash 32.0.0.465, Java Deployment Toolkit 8.0.3710.11 11.371.2.11, Java(TM) Platform SE 8 U371 11.371.2.11, Shockwave for Director 12.3.5.205, TeraBox Application 1.4.0.4

If possible, please include the output of help->troubleshooting information (as text):
**PASTE troubleshooting information here**
Application Basics
------------------

Name: Pale Moon
Version: 34.0.0 (32-bit)
Build ID: 20260116223224
Update Channel: release
User Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:128.0) Gecko/20100101 Goanna/6.8 Firefox/128.0 PaleMoon/34.0.0
OS: Windows_NT 10.0
CPU Capabilities: SSE2 AVX AVX2
Safe Mode: false

Extensions
----------

Name: Archiveis Now
Version: 0.0.1
Enabled: true
ID: @archiveis-now

Name: Bookmark Duplicate Cleaner
Version: 0.2.1-signed.1-signed
Enabled: true
ID: bookmarkdup@localghost.net

Name: Bookmark Favicon Changer
Version: 2.29
Enabled: true
ID: bookmarkfaviconchanger@sonthakit

Name: Browsepaper
Version: 1.8
Enabled: true
ID: {3c8cb644-b444-49f5-a1c4-2811d53d352c}

Name: Cookie Exporter
Version: 1.5.1-signed.1-signed
Enabled: true
ID: cookieexporter@krk

Name: Custom Buttons Enhanced
Version: 0.0.6
Enabled: true
ID: custombuttons@xsms.org

Name: FEBE
Version: 10.4
Enabled: true
ID: {4BBDD651-70CF-4821-84F8-2B918CF89CA3}

Name: Greasemonkey for Pale Moon
Version: 3.31.4
Enabled: true
ID: greasemonkeyforpm@janekptacijarabaci

Name: Modify HTTP Response
Version: 1.3.8
Enabled: true
ID: modhresponse@Off.JustOff

Name: Moonscape Icon Pack
Version: 1.1.0
Enabled: true
ID: moonscape-iconpack@franklindm

Name: Multi Links Plus
Version: 3.9.3
Enabled: true
ID: multilinksplus@hugsmile.eu

Name: Navigational Sounds
Version: 1.4.0
Enabled: true
ID: {d84a846d-f7cb-4187-a408-b171020e8940}

Name: Open With Edge, IE, Chrome, and More
Version: 4.1.0
Enabled: true
ID: {ab91ffec-fe2a-440e-99ca-5260e0ea0c06}

Name: Pale Moon Commander
Version: 3.0.1
Enabled: true
ID: commander@palemoon.org

Name: Password Backup Tool
Version: 1.4.1
Enabled: true
ID: password-backup-tool@Off.JustOff

Name: PermissionsPlus
Version: 2.5.1
Enabled: true
ID: {c3303c6e-5424-41a3-8e65-255687a94434}

Name: PMPlayer
Version: 1.9.1
Enabled: true
ID: {d952f8dd-f45c-4838-8e21-03c1f916883b}

Name: Sasuga
Version: 2.3.2
Enabled: true
ID: sasuga@vannilla.org

Name: ScriptBlock
Version: 1.0.0
Enabled: true
ID: jsblock@4bebca82

Name: Stylem
Version: 2.2.9
Enabled: true
ID: {503a85e3-84c9-40e5-b98e-98e62085837f}

Name: Suspender
Version: 1.0.2
Enabled: true
ID: suspender@wolfbeast.com

Name: Tab Utilities Phoenix
Version: 2.1.2
Enabled: true
ID: tabutils@angrydroid.com

Name: TabMarker
Version: 2.0
Enabled: true
ID: TabMarker@yup

Name: Track Package
Version: 33.1
Enabled: true
ID: {32C0E919-16F4-5571-840D-D3F952999437}

Name: uBlock Origin
Version: 1.16.6.1
Enabled: true
ID: uBlock0@raymondhill.net

Name: WebComponents Toggle
Version: 2.0.0
Enabled: true
ID: {99ca5bd9-6e14-431e-aad7-19df2c347719}

Name: YouTubeNonStop
Version: 1.0.12
Enabled: true
ID: own3mall0@gmail.com

Name: ηMatrix
Version: 5.1.1
Enabled: true
ID: eMatrix@vannilla.org

Name: ΜTube
Version: 33.0
Enabled: true
ID: {35FF1267-2C7D-5FA8-876D-4EDFC0CB89FB}

Name: Phoebus Dev Helper
Version: 1.0.3
Enabled: false
ID: phoebus-dev@Off.JustOff

Name: Photobucket Unlocker
Version: 1.0.2
Enabled: false
ID: photobucket-unlocker@Off.JustOff

Graphics
--------

Features
Compositing: Direct3D 11
GPU Accelerated Windows: 1/1 Direct3D 11 (OMTC)
Asynchronous Pan/Zoom: none
WebGL 1 Driver WSI Info: EGL_VENDOR: Google Inc. (adapter LUID: 000000000000f56b) EGL_VERSION: 1.4 (ANGLE 2.1.0.) EGL_EXTENSIONS: EGL_EXT_create_context_robustness EGL_ANGLE_d3d_share_handle_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_ANGLE_direct_composition 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_stream_producer_d3d_texture_nv12 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 (Intel(R) UHD Graphics 630 Direct3D11 vs_5_0 ps_5_0)
WebGL 1 Driver Version: OpenGL ES 2.0 (ANGLE 2.1.0.)
WebGL 1 Driver Extensions: GL_OES_element_index_uint GL_OES_packed_depth_stencil GL_OES_get_program_binary GL_OES_rgb8_rgba8 GL_EXT_texture_format_BGRA8888 GL_EXT_read_format_bgra GL_NV_pixel_buffer_object GL_OES_mapbuffer GL_EXT_map_buffer_range GL_EXT_color_buffer_half_float GL_OES_texture_half_float GL_OES_texture_half_float_linear GL_OES_texture_float GL_OES_texture_float_linear GL_EXT_texture_rg GL_EXT_texture_compression_dxt1 GL_ANGLE_texture_compression_dxt3 GL_ANGLE_texture_compression_dxt5 GL_OES_compressed_ETC1_RGB8_texture GL_EXT_sRGB GL_ANGLE_depth_texture GL_OES_depth32 GL_EXT_texture_storage GL_OES_texture_npot GL_EXT_draw_buffers GL_EXT_texture_filter_anisotropic GL_EXT_occlusion_query_boolean GL_NV_fence GL_EXT_disjoint_timer_query GL_EXT_robustness GL_EXT_blend_minmax GL_ANGLE_framebuffer_blit GL_ANGLE_framebuffer_multisample GL_ANGLE_instanced_arrays GL_ANGLE_pack_reverse_row_order GL_OES_standard_derivatives GL_EXT_shader_texture_lod GL_EXT_frag_depth GL_ANGLE_texture_usage GL_ANGLE_translated_shader_source GL_EXT_discard_framebuffer GL_EXT_debug_marker GL_OES_EGL_image GL_OES_EGL_image_external GL_NV_EGL_stream_consumer_external GL_EXT_unpack_subimage GL_NV_pack_subimage GL_OES_vertex_array_object GL_KHR_debug GL_ANGLE_lossy_etc_decode GL_CHROMIUM_bind_uniform_location GL_CHROMIUM_sync_query GL_CHROMIUM_copy_texture
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 MOZ_debug_get 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_etc1 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: 000000000000f56b) EGL_VERSION: 1.4 (ANGLE 2.1.0.) EGL_EXTENSIONS: EGL_EXT_create_context_robustness EGL_ANGLE_d3d_share_handle_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_ANGLE_direct_composition 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_stream_producer_d3d_texture_nv12 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 (Intel(R) UHD Graphics 630 Direct3D11 vs_5_0 ps_5_0)
WebGL 2 Driver Version: OpenGL ES 3.0 (ANGLE 2.1.0.)
WebGL 2 Driver Extensions: GL_OES_element_index_uint GL_OES_packed_depth_stencil GL_OES_get_program_binary GL_OES_rgb8_rgba8 GL_EXT_texture_format_BGRA8888 GL_EXT_read_format_bgra GL_NV_pixel_buffer_object GL_OES_mapbuffer GL_EXT_map_buffer_range GL_EXT_color_buffer_half_float GL_OES_texture_half_float GL_OES_texture_half_float_linear GL_OES_texture_float GL_OES_texture_float_linear GL_EXT_texture_rg GL_EXT_texture_compression_dxt1 GL_ANGLE_texture_compression_dxt3 GL_ANGLE_texture_compression_dxt5 GL_OES_compressed_ETC1_RGB8_texture GL_EXT_sRGB GL_ANGLE_depth_texture GL_OES_depth32 GL_EXT_texture_storage GL_OES_texture_npot GL_EXT_draw_buffers GL_EXT_texture_filter_anisotropic GL_EXT_occlusion_query_boolean GL_NV_fence GL_EXT_disjoint_timer_query GL_EXT_robustness GL_EXT_blend_minmax GL_ANGLE_framebuffer_blit GL_ANGLE_framebuffer_multisample GL_ANGLE_instanced_arrays GL_ANGLE_pack_reverse_row_order GL_OES_standard_derivatives GL_EXT_shader_texture_lod GL_EXT_frag_depth GL_ANGLE_texture_usage GL_ANGLE_translated_shader_source GL_EXT_discard_framebuffer GL_EXT_debug_marker GL_OES_EGL_image GL_OES_EGL_image_external GL_OES_EGL_image_external_essl3 GL_NV_EGL_stream_consumer_external GL_EXT_unpack_subimage GL_NV_pack_subimage GL_EXT_color_buffer_float GL_OES_vertex_array_object GL_KHR_debug GL_ANGLE_lossy_etc_decode GL_CHROMIUM_bind_uniform_location GL_CHROMIUM_sync_query GL_CHROMIUM_copy_texture GL_EXT_texture_norm16
WebGL 2 Extensions: EXT_color_buffer_float EXT_texture_filter_anisotropic EXT_disjoint_timer_query MOZ_debug_get OES_texture_float_linear WEBGL_compressed_texture_etc WEBGL_compressed_texture_etc1 WEBGL_compressed_texture_s3tc WEBGL_debug_renderer_info WEBGL_debug_shaders WEBGL_lose_context MOZ_WEBGL_lose_context MOZ_WEBGL_compressed_texture_s3tc
Hardware H264 Decoding: Yes; Using D3D11 API
Audio Backend: wasapi
Direct2D: true
DirectWrite: true (10.0.19041.5794)
GPU #1
Active: Yes
Description: Intel(R) UHD Graphics 630
Vendor ID: 0x8086
Device ID: 0x3e9b
Driver Version: 27.20.100.9466
Driver Date: 3-30-2021
Drivers: igdumdim64 igd10iumd64 igd10iumd64 igd12umd64 igdumdim32 igd10iumd32 igd10iumd32 igd12umd32
Subsys ID: 13311025
RAM: Unknown
GPU #2
Active: No
Description: NVIDIA GeForce GTX 1650
Vendor ID: 0x10de
Device ID: 0x1f91
Driver Version: 32.0.15.9174
Driver Date: 12-30-2025
Drivers: C:\WINDOWS\System32\DriverStore\FileRepository\nvaci.inf_amd64_3420b0f600026006\nvldumdx.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nvaci.inf_amd64_3420b0f600026006\nvldumdx.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nvaci.inf_amd64_3420b0f600026006\nvldumdx.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nvaci.inf_amd64_3420b0f600026006\nvldumdx.dll C:\WINDOWS\System32\DriverStore\FileRepository\nvaci.inf_amd64_3420b0f600026006\nvldumd.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nvaci.inf_amd64_3420b0f600026006\nvldumd.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nvaci.inf_amd64_3420b0f600026006\nvldumd.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nvaci.inf_amd64_3420b0f600026006\nvldumd.dll
Subsys ID: 13321025
RAM: 4096
Diagnostics
AzureCanvasBackend: direct2d 1.1
AzureContentBackend: direct2d 1.1
AzureFallbackCanvasBackend: cairo





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

accessibility.typeaheadfind.flashBar: 0
browser.cache.disk.capacity: 1048576
browser.cache.disk.smart_size.enabled: false
browser.cache.disk.smart_size.first_run: false
browser.cache.disk.smart_size.use_old_max: false
browser.download.folderList: 2
browser.download.importedFromSqlite: true
browser.download.useDownloadDir: true
browser.places.smartBookmarksVersion: 4
browser.search.openintab: true
browser.search.useDBForOrder: true
browser.startup.homepage: http://www.factordb.com/
browser.startup.homepage_override.buildID: 20260116223224
browser.startup.homepage_override.mstone: 6.8.0
browser.tabs.closeWindowWithLastTab: false
browser.tabs.loadInBackground: false
dom.always_stop_slow_scripts: false
dom.enable_performance_navigation_timing: true
dom.enable_performance_observer: true
dom.max_script_run_time: 0
dom.storage.default_quota: 65536
extensions.lastAppVersion: 34.0.0
font.internaluseonly.changed: false
general.useragent.updates.lastupdated: 1768938106044
gfx.crash-guard.d3d11layers.appVersion: 34.0.0
gfx.crash-guard.d3d11layers.deviceID: 0x3e9b
gfx.crash-guard.d3d11layers.driverVersion: 27.20.100.9466
gfx.crash-guard.d3d11layers.feature-d2d: true
gfx.crash-guard.d3d11layers.feature-d3d11: true
gfx.crash-guard.status.d3d11layers: 2
gfx.crash-guard.status.d3d11video: 2
media.autoplay.enabled: false
media.av1.enabled: true
media.hardware-video-decoding.failed: false
network.cookie.prefsMigrated: true
network.dns.disablePrefetch: true
places.database.lastMaintenance: 1768337936
places.history.expiration.transient_current_max_pages: 125471
plugin.state.flash: 0
plugin.state.java: 0
plugin.state.np32dsw: 0
plugin.state.npdeployjava: 0
plugin.state.npyunwebdetect: 0
privacy.GPCheader.enabled: true
privacy.sanitize.migrateFx3Prefs: true
services.sync.declinedEngines:
services.sync.engine.greasemonkey: true
storage.vacuum.last.index: 1
storage.vacuum.last.places.sqlite: 1768074991
ui.osk.debug.keyboardDisplayReason: IKPOS: Touch screen not found.

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

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

JavaScript
----------

Incremental GC: true

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

Activated: false
Prevent Accessibility: 1

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

NSPR
Expected minimum version: 4.35
Version in use: 4.35

NSS
Expected minimum version: 3.90.9
Version in use: 3.90.9

NSSSMIME
Expected minimum version: 3.90.9
Version in use: 3.90.9

NSSSSL
Expected minimum version: 3.90.9
Version in use: 3.90.9

NSSUTIL
Expected minimum version: 3.90.9
Version in use: 3.90.9
Seconds after opening the above link, I noticed that my RAM usage was rising rapidly. Looking at Resource Monitor, PM was the culprit. Closing or unloading the tab, and then switching between other tabs seems to stop the memory leak, and cause RAM to go back to normal. Also, I noticed that it doesn't start leaking until the mouse cursor is in the actual page (not the tab bar or toolbars).

User avatar
Moonchild
Project founder
Project founder
Posts: 38825
Joined: 2011-08-28, 17:27
Location: Sweden

Re: Serious memory leak in PM 34.0.0

Post by Moonchild » 2026-01-21, 00:08

Thanks for the report. We're looking into this.
"There is no point in arguing with an idiot, because then you're both idiots." - Anonymous
"Seek wisdom, not knowledge. Knowledge is of the past; wisdom is of the future." -- Native American proverb
"Linux makes everything difficult." -- Lyceus Anubite

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back2themoon
Knows the dark side
Knows the dark side
Posts: 3093
Joined: 2012-08-19, 20:32

Re: Serious memory leak in PM 34.0.0

Post by back2themoon » 2026-01-21, 00:23

Is this exclusive to the 32-bit version? Can't reproduce it on 64-bit.

User avatar
satrow
Forum staff
Forum staff
Posts: 1936
Joined: 2011-09-08, 11:27

Re: Serious memory leak in PM 34.0.0

Post by satrow » 2026-01-21, 00:36

back2themoon wrote:
2026-01-21, 00:23
Is this exclusive to the 32-bit version? Can't reproduce it on 64-bit.
Likewise here.

q160765803
Moon lover
Moon lover
Posts: 82
Joined: 2023-04-13, 07:57

Re: Serious memory leak in PM 34.0.0

Post by q160765803 » 2026-01-21, 01:00

This could be related to my report as well: https://forum.palemoon.org/viewtopic.php?f=70&t=33085

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Night Wing
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Posts: 5739
Joined: 2011-10-03, 10:19
Location: Piney Woods of Southeast Texas, USA

Re: Serious memory leak in PM 34.0.0

Post by Night Wing » 2026-01-21, 01:01

I cannot reproduce any memory leak on that forum using 64 bit linux Pale Moon 34.0.0 (GTK2) running in 64 bit MX Linux 25.1 (Infinity) Xfce. My screen shot is below.
You do not have the required permissions to view the files attached to this post.
MX Linux 25.1 (Infinity) Xfce w/Pale Moon, Waterfox, Firefox
Linux Debian 13.3 (Trixie) Xfce w/Pale Moon, Waterfox, Firefox

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UCyborg
Astronaut
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Posts: 712
Joined: 2019-01-10, 09:37
Location: Slovenia

Re: Serious memory leak in PM 34.0.0

Post by UCyborg » 2026-01-22, 01:05

Confirmed on 32-bit build, fresh browser profile. One core gets busy and memory usage keeps rising.