Mozilla Still Perplexed as to Why Firefox Takes So Much RAM

zekrahminator · Nov 13, 2007

Anyone who uses Mozilla Firefox in a Windows environment knows that Firefox can use a lot of memory. Now that Mozilla is getting a lot of requests to make a mobile version, they are working very hard to make a version that won't eat all of the mobile phone's memory. Christopher Blizzard, a member of Mozilla's development board, had this to say about Firefox's alleged memory issues.

As Mozilla starts down the path to running in the mobile space we are spending time looking at memory pressure issues more closely. . . (I)t sounds like the early data suggests that Mozilla really doesn't leak that much memory at all. But it does thrash the allocator pretty hard and that's what causes the perception of memory leaks.

View at TechPowerUp Main Site

insider · Nov 13, 2007

Currently my Firefox browser is using over 510MB of ram, it once topped 1GB...

p_o_s_pc · Nov 13, 2007

i see about 250mb of ram being used almost everytime i use FF i also have many add-ons.

Deleted member 24505 · Nov 13, 2007

Thats part of the reason i dont use it,the ram useage of firefox is a joke.

insider · Nov 13, 2007

The browser is sometimes using as much memory as the latest games, what is all that memory used for???

"Doesn't leak that much memory" my butt!

OnBoard · Nov 13, 2007

I'm "just" on 205MB now, nice to see they are trying to do something about it. Although it's said that 3.0 should fit the memory leaking, maybe they can put this mobile version low memory usage in there too.

Deleted member 24505 · Nov 13, 2007

If they dont get the mem usage down,there aint gonna be no mobile version.

WhiteLotus · Nov 13, 2007

i want to know how uses it so much!

oli_ramsay · Nov 13, 2007

Opera Ftw!!!

L|NK|N · Nov 13, 2007

Wow, I just check my usage and its only 64mb. :wtf:

It's not near as bad as some of yours? Just checked IE as well. Its only using 38mb.

FreedomEclipse · Nov 13, 2007

my firefox is currently using 52mb lol

DRDNA · Nov 13, 2007

Hmm srry to the folks that insist on FF but I prefer IE6 right now ...but good luck to the FF team to fix memory usage!

Solaris17 · Nov 13, 2007

using 113mb

mdm-adph · Nov 13, 2007

Using only 130 mb now, and I have 20 tabs spread over several windows, not to mention the 30 or so extensions I have installed and am actively using. That being said, I'm very careful with the extensions that I install (I make sure to avoid any that seem to be leaking memory at an alarming rate).

However, if you ask me, any argument about how much memory Firefox should use, when supplemented by personal examples, is useless unless you also supply which extensions you're currently using.

Oliver · Nov 13, 2007

Raving mad

How do you guys go so high mine uses 40mb maxed out.......nice and sleek and streamlined

magibeg · Nov 13, 2007

Mines using 67mb with 3 windows open.... not great but meh

OrbitzXT · Nov 13, 2007

Mine is only using 45,772k...I've never seen it above 80k, why would that be? I'm using XP x64.

theonetruewill · Nov 13, 2007

I never get over 70MB peak. I've never had these memory problems. I normally average at around 40MB. Out of interest what skins do the guys who have memory issues use?

newconroer · Nov 13, 2007

Aye same here, never broken 80. I use same window with tabs, and I don't have a load of plugins installed.

I think this is more dependant on the individual user. And most people's systems are run like crap, so what should one expect?

little geek · Nov 13, 2007

what memory leak?

theonetruewill · Nov 13, 2007

newconroer said:
Aye same here, never broken 80. I use same window with tabs, and I don't have a load of plugins installed.

I think this is more dependant on the individual user. And most people's systems are run like crap, so what should one expect?

I don't have a lot of plugins. i reckon poorly coded ones are the problem for some. Others, I don't know???

pt · Nov 13, 2007

i only have one plugin and it uses 40mb, if i install more it fuks up
so opera ftw

zekrahminator · Nov 13, 2007

Firefox at 80M after about an hour of usage and three tabs open.

OnBoard · Nov 13, 2007

theonetruewill said:
I never get over 70MB peak. I've never had these memory problems. I normally average at around 40MB. Out of interest what skins do the guys who have memory issues use?

Open 3 firefoxes with 20 tabs each, browse a while. Then close 2 of them and leave just 1 tab open in last and see that you are still using all the memory that was in use before. It doesn't free the memory and as I don't ever shutdown my puter (or firefox) it just builds and builds up. Only way to clear mem is to shut down every firefox and then start a new one. <- And that is a veryvery bad idea if you are reading review on some new stuff, like while back I was looking for my LCD TV. Hours of work getting usefull pages open, you just can't close them until you don't need them anymore.

Same as you'd be playing a game and had to restart it every hour

But my FF is quite basic, no modifications and 12 add-ons.

PVTCaboose1337 · Nov 13, 2007

My firefox is taking 49mb... but its not that big a deal.

Processor	AMD Athlon 64 X2 4800+ Brisbane @ 2.8GHz (224x12.5, 1.425V)
Motherboard	Gigabyte sumthin-or-another, it's got an nForce 430
Cooling	Dual 120mm case fans front/rear, Arctic Cooling Freezer 64 Pro, Zalman VF-900 on GPU
Memory	2GB G.Skill DDR2 800
Video Card(s)	Sapphire X850XT @ 580/600
Storage	WD 160 GB SATA hard drive.
Display(s)	Hanns G 19" widescreen, 5ms response time, 1440x900
Case	Thermaltake Soprano (black with side window).
Audio Device(s)	Soundblaster Live! 24 bit (paired with X-530 speakers).
Power Supply	ThermalTake 430W TR2
Software	XP Home SP2, can't wait for Vista SP1.

System Name	el'lappy\|Cruncher \| Cruncher 2
Processor	intel C2D T6400 \| i7 3770k @4.2ghz \| AII X2 220 @3.4ghz
Motherboard	some Acer \| Asus P8Z77-V Pro \|Gigabyter GA-M61p-S3
Cooling	dual 80mm cooling fan \| WC'ing ) \|cheapo
Memory	2x2gb ddr3 \| 2x2gb Ripjaws 1600 \|4x512mb D9s
Video Card(s)	onboard \| 60 1GB(hd7770 ) \|8800GTS
Storage	Momuntus xt 320gb \|Kingston Hyper X 120gb SATA III\|500gb WD
Display(s)	17in \| 42" 1080P HD 3D TV
Case	lappy case \| CM HAF XB \|none yet
Audio Device(s)	onboard \| onboard \| onboard
Power Supply	Dell brick w/ acer end end \| Antec EW 650w \|Antec SP 350w(upg.soon)
Software	Windows 7 Ult. 64bit---->------->

Processor	Core i5-750 @ 3.6GHz 1.136V 24/7
Motherboard	Gigabyte P55A-UD3, SATA 6Gbit/s & USB3.0 baby!
Cooling	Alpenföhn Brocken HeatpipeDirectTouch
Memory	Geil Ultra Series 4GB 2133MHz DDR3 @ 1440MHz 7-7-7-24
Video Card(s)	Gigabyte GTX 460 1GB OC (mostly stock speeds)
Storage	OS: Samsung F3 500GB Games: Samsung F1 640GB
Display(s)	new! Samsung P2350 23" FullHD 2ms / Mirai DTL-632E500 32" LCD
Case	new! Xigmatek Midgard/Utgard side window with red cathodes, 1x140mm & 3x120mm fans
Audio Device(s)	new! ASUS Xonar DG & JVC HA-RX700 headphones
Power Supply	Cougar CM 700W Modular
Software	Windows 7 Home Premium x64
Benchmark Scores	Logitech UltraX Premium & G5 laser v2 + Ulti-mat Breathe X2 for fragging

System Name	Vintage
Processor	i7 - 3770K @ Stock
Cooling	Scythe Zipang II
Memory	2x4GB Crucial DDR3
Video Card(s)	MSI GTX970
Storage	M4 124GB SSD// WD Black 640GB// WD Black 1TB//Samsung F3 1.5TB
Display(s)	Samsung SM223BW 21.6"
Case	Generic
Power Supply	Corsair HX 520W
Software	Windows 7

System Name	Dream Weaver
Processor	Ryzen 5600
Motherboard	B450 MSI Gaming Pro Carbon AC
Cooling	NH-D14
Memory	16GB Flare X @ 3200MHz CL14
Video Card(s)	Sapphire Vega 64 Nitro+
Storage	500GB evo 970 m.2 + 4TB HDDs
Display(s)	ASUS 27" 1440p 144hz FreeSync
Case	Fractal Design Define R3
Power Supply	Corsair 850W
Software	Windows 10 x64

System Name	Codename: Icarus Mk.VI
Processor	Intel 8600k@Stock -- pending tuning
Motherboard	Asus ROG Strixx Z370-F
Cooling	CPU: BeQuiet! Dark Rock Pro 4 {1xCorsair ML120 Pro\|5xML140 Pro}
Memory	32GB XPG Gammix D10 {2x16GB}
Video Card(s)	ASUS Dual Radeon™ RX 6700 XT OC Edition
Storage	Samsung 970 Evo 512GB SSD (Boot)\|WD SN770 (Gaming)\|2x 3TB Toshiba DT01ACA300\|2x 2TB Crucial BX500
Display(s)	LG GP850-B
Case	Corsair 760T (White)
Audio Device(s)	Yamaha RX-V573\|Speakers: JBL Control One\|Auna 300-CN\|Wharfedale Diamond SW150
Power Supply	Corsair AX760
Mouse	Logitech G900
Keyboard	Duckyshine Dead LED(s) III
Software	Windows 10 Pro
Benchmark Scores	(ノಠ益ಠ)ノ彡┻━┻

Processor	INTEL CORE I9-9900K @ 5Ghz all core 4.7Ghz Cache @1.305 volts
Motherboard	ASUS PRIME Z390-P ATX
Cooling	CORSAIR HYDRO H150I PRO RGB 360MM 6x120mm fans push pull
Memory	CRUCIAL BALLISTIX 3000Mhz 4x8 32gb @ 4000Mhz
Video Card(s)	EVGA GEFORECE RTX 2080 SUPER XC HYBRID GAMING
Storage	ADATA XPG SX8200 Pro 1TB 3D NAND NVMe,Intel 660p 1TB m.2 ,1TB WD Blue 3D NAND,500GB WD Blue 3D NAND,
Display(s)	50" Sharp Roku TV 8ms responce time and Philips 75Hz 328E9QJAB 32" curved
Case	BLACK LIAN LI O11 DYNAMIC XL FULL-TOWER GAMING CASE,
Power Supply	1600 Watt
Software	Windows 10

System Name	Rocinante
Processor	I9 14900KS
Motherboard	EVGA z690 Dark KINGPIN (modded BIOS)
Cooling	EK-AIO Elite 360 D-RGB
Memory	64GB Gskill Trident Z5 DDR5 6000 @6400
Video Card(s)	MSI SUPRIM Liquid X 4090
Storage	1x 500GB 980 Pro \| 1x 1TB 980 Pro \| 1x 8TB Corsair MP400
Display(s)	Odyssey OLED G9 G95SC
Case	Lian Li o11 Evo Dynamic White
Audio Device(s)	Moondrop S8's on Schiit Hel 2e
Power Supply	Bequiet! Power Pro 12 1500w
Mouse	Lamzu Atlantis mini (White)
Keyboard	Monsgeek M3 Lavender, Akko Crystal Blues
VR HMD	Quest 3
Software	Windows 11
Benchmark Scores	I dont have time for that.

System Name	Jupiter-2
Processor	Intel i3-6100
Motherboard	H170I-PLUS D3
Cooling	Stock
Memory	8GB Mushkin DDR3L-1600
Video Card(s)	EVGA GTX 1050ti
Storage	512GB Corsair SSD
Display(s)	BENQ 24in
Case	Lian Li PC-Q01B Mini ITX
Audio Device(s)	Onboard
Power Supply	Corsair 450W
Mouse	Logitech Trackball
Keyboard	Custom bamboo job
Software	Win 10 Pro
Benchmark Scores	Finished Super PI on legendary mode in only 13 hours.

Processor	E6700@3447 (383.19)24/7; 3735(4159)for benchies
Motherboard	P5B dlx
Cooling	Zalman cnps 9700 led; 1Thermaltake enlobel 120mm; 1Noctua 120 and 2NZXT 120 mm case fans
Memory	Corsair Twinx 2Go Pc6400c4 @ 478.9 4-4-4-12
Video Card(s)	hd 2900 xt @850/1050
Storage	400G Seagate; 75Go WD raptor (system disk)
Display(s)	Sony h70
Case	Modded NZXT apollo
Audio Device(s)	Sound Blaster X-FI audio / Altec 2.1
Power Supply	Enermax Infinity 720W
Software	XP pro sp2
Benchmark Scores	3DMark=12907

System Name	Not named
Processor	Intel 8700k @ 5Ghz
Motherboard	Asus ROG STRIX Z370-E Gaming
Cooling	DeepCool Assassin II
Memory	16GB DDR4 Corsair LPX 3000mhz CL15
Video Card(s)	Zotac 1080 Ti AMP EXTREME
Storage	Samsung 960 PRO 512GB
Display(s)	24" Dell IPS 1920x1200
Case	Fractal Design R5
Power Supply	Corsair AX760 Watt Fully Modular

System Name	AX-01
Processor	Intel Core i5-2500K @3.7 GHz
Motherboard	ASRock Z68 Extreme3 Gen3
Cooling	Zalman 9700
Memory	Kingston HyperX T1 Series 8GB DDR3 1600 MHZ
Video Card(s)	GTX 590
Storage	Intel X25-M
Display(s)	42" Samsung LED HDTV
Case	Antec Twelve Hundred
Audio Device(s)	HT \| OMEGA STRIKER 7.1
Power Supply	Kingwin 1000W
Software	Windows 7 64-Bit

System Name	COLOSSUS-MK4
Processor	E8400 @4.4 GHz - FSB @550 MHZ
Motherboard	Asus P5K Premium (Black Pearl)
Cooling	Xigmatek HDT-S1283
Memory	2x1GB Geil BlckDrgn 800 @1158 5-5-5-18
Video Card(s)	8800GT 512MB @740/1782/2080
Storage	Hitachi T7K250 250GB & 7200.10 Seagate 250GB
Display(s)	Gateway FPD1975W 19" Widescreen
Case	Antec 1200
Audio Device(s)	Xi-FI Xtreme Audio
Power Supply	CoolerMaster IGreen 500W
Software	XP Home SP3
Benchmark Scores	SuperPi: 10.563 Sciencemark: 2563.14

System Name	Widow
Processor	Ryzen 7600x
Motherboard	AsRock B650 HDVM.2
Cooling	CPU : Corsair Hydro XC7 }{ GPU: EK FC 1080 via Magicool 360 III PRO > Photon 170 (D5)
Memory	32GB Gskill Flare X5
Video Card(s)	GTX 1080 TI
Storage	Samsung 9series NVM 2TB and Rust
Display(s)	Predator X34P/Tempest X270OC @ 120hz / LG W3000h
Case	Fractal Define S [Antec Skeleton hanging in hall of fame]
Audio Device(s)	Asus Xonar Xense with AKG K612 cans on Monacor SA-100
Power Supply	Seasonic X-850
Mouse	Razer Naga 2014
Software	Windows 11 Pro
Benchmark Scores	FFXIV ARR Benchmark 12,883 on i7 2600k 15,098 on AM5 7600x

Processor	pentium d 930 3ghz 2x2mb cache
Motherboard	sg-95 abit
Cooling	stock with 4 case fans
Memory	2gb 667mhz cheap kingston stuff
Video Card(s)	x1600pro pci-e stock 500/500 oc 600/650 on evercool turbo 2
Storage	3 hdd's pata, 320gb diamondmax, maxtor dm plus 9 80gb,seagate 80gb
Display(s)	dell big crt m9990 & mesh thingy
Case	air box case
Audio Device(s)	ac97
Power Supply	400watt akasa
Software	xp professional service pack 2

Processor	AMD Turion 64 X2 Mobile TL-60 (Trinidad)
Motherboard	ASUS F3Ka (ATI RS690M)
Cooling	stock
Memory	Nanya 2x1GB ddr2 667@5-5-5-15-2T
Video Card(s)	ATI Mobility Radeon HD2600 512MB DDR2@ 580mhz/486mhz
Storage	160GB on laptop+250GB external
Display(s)	ASUS 15.4
Case	Asus Laptop F3Ka chassis
Audio Device(s)	on-board
Power Supply	1:30minutes battery
Software	"genui xp", 'cause i hated vista

System Name	Whim
Processor	Intel Core i5 2500k @ 4.4ghz
Motherboard	Asus P8Z77-V LX
Cooling	Cooler Master Hyper 212+
Memory	2 x 4GB G.Skill Ripjaws @ 1600mhz
Video Card(s)	Gigabyte GTX 670 2gb
Storage	Samsung 840 Pro 256gb, WD 2TB Black
Display(s)	Shimian QH270 (1440p), Asus VE228 (1080p)
Case	Cooler Master 430 Elite
Audio Device(s)	Onboard > PA2V2 Amp > Senn 595's
Power Supply	Corsair 750w
Software	Windows 8.1 (Tweaked)

Mozilla Still Perplexed as to Why Firefox Takes So Much RAM

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