Memory leakage in Firefox 17.0.1 related to a single webpage- is it a FF bug?

How to reproduce: open this page, leave open for 5-10 minutes, and make it active: http://www.pickpackpont.hu/csomagkereso?bc=
Make another page actice, wait a minute, go back to this a few times. Memory consumption temporarily goes up, sometimes above 700 MB with only this page, downloads and about:memory open.
System: Firefox 17.0.1 on Ubuntu linux 12.04 + MATE DE
hardware: Sempron 2800+, Abit KU8 motherboard, 2x512 MB DDR400, ATI Radeon 9200SE 5964 (AGP) (not supported, running in VESA mode)
Screenshots: (not in the same time)
System memory: http://kepfeltoltes.hu/view/121217/K_perny_k_p-1_www.kepfeltoltes.hu_.png
about:memory: http://kepfeltoltes.hu/view/121217/K_perny_k_p___8211__2012-12-17_15_55_09_www.kepfeltoltes.hu_.png

After filtering out ||pickpackpont.hu/static/pubimg/* &
||pickpackpont.hu/static/banners/* using flashblock, memory usage returned to normal. These filters are related to the banner list of partners at the bottom of the page. I also emailed the webmaster of the page. Just in case if it's not a FF bug but lazy web programming.

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best regards,
Message was edited by:
happy_life

Comments inlined:
does making objects equal null help the gc handle
memory leakage problems ?To an extent yes. During the mark phase it will be easier for the GC to identify the nullified objects on the heap while doing reference analysis.
does that help out the gc to collect unwanted objects
??Same answer as earlier, Eventhough you nullify the object you cannot eliminate the reference analysis phase of GC which definitelely would take some time.
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name='cpu',
arg='cpu1',
max=100,
bg_colour=ring_background_color,
bg_alpha=ring_background_alpha,
fg_colour=ring_foreground_color,
fg_alpha=ring_foreground_alpha,
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radius=35,
thickness=3,
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bg_alpha=ring_background_alpha,
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x=205, y=55,
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thickness=10,
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cairo_curve_to(cr,w,h,w,h,w-corner_r,h)
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cairo_curve_to(cr,0,h,0,h,0,h-corner_r)
cairo_line_to(cr,0,corner_r)
cairo_curve_to(cr,0,0,0,0,corner_r,0)
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cairo_destroy(cr)
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function conky_main()
conky_draw_bg()
conky_ring_stats()
cairo_destroy(cr)
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background no
override_utf8_locale no
use_xft yes
xftfont Monospace:size=8
## orig font cure
text_buffer_size 2048
update_interval 1.0
total_run_times 0
own_window yes
own_window_transparent yes
own_window_type desktop
own_window_colour 191919
own_window_hints undecorated,below,sticky,skip_taskbar,skip_pager
double_buffer yes
minimum_size 600 90
maximum_width 320
draw_shades no
draw_outline no
draw_borders no
draw_graph_borders no
default_color 909090
default_shade_color fed053
default_outline_color 7f8f9f
alignment br
gap_x 30
gap_y 50
no_buffers yes
uppercase no
cpu_avg_samples 2
override_utf8_locale no
color1 fff
border_inner_margin 5
border_outer_margin 5
own_window_argb_visual no
own_window_argb_value 200
lua_load ~/.conky/rings.lua
lua_draw_hook_pre main
Left out the conky TEXT section unless anybody desperately needs to see that too.
If anybody can point me in the right direction with this silly thing, that would be appreciated. Thanks!
Last edited by ugugii (2011-11-16 17:42:00)

No I meant that the destroy functions should not be in conky_main at all. Why? Because you are using cr as an argument when you have no local cr defined. You are passing the undefined value (nil) to these destroy functions and they do nothing.
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local cs=cairo_xlib_surface_create(conky_window.display,conky_window.drawable,conky_window.visual, conky_window.width,conky_window.height)
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