• This is really interesting to see, seems that Firefox has improved some way from it’s overly bloated younger days when it was said to “leak” memory.
    Your comparison results aren’t too far away from dot net perls.
    This must have taken some time! Stumbled. Nice work.

  • @Jonny

    Yeah, Firefox v3 uses memory in much more sane ways.

    Actually I was surprised how fast I was done. :) Half an hour to write and debug script and under hour to run tests (I was running them sequentially, not in bulk like original test).

  • Abhinav K

    BTW, why don’t you try Firefox with Automatic RAM cache disabled or with different settings.

  • Abhinav

    Why did not you try Firefox 3.5, after all dotnetprl… has compared diff browsers with Firefox 3.5 Rc2

  • @Abhinav

    As I said Firefox is for company. :) I am long time Opera user so that is my primary interest and browser I cover most here in my blog.

    On version – I took latests stable releases. Which 3.0.11 is and 3.5RC2 is not. I know it’s hip lately to use cutting edge releases but it is stable ones that are most used and worth using for security and such.

  • Chocobito

    I try my self to make a very raw test for probe memory consuming in Opera 10B and Firefox 3, actually I open 15 very content loaded web page at once, wait to fully load and see how much memory consume each browser, as the result Opera round to 170 to 190 MB, Firefox round to 90 to 120 MB. Opera consume more memory that Firefox but in all the test process, Firefox was very much CPU time consuming, reaching 90% of CPU, Opera only sometimes reach 50% and almost all the time was low 20% of CPU time. Rarst, maybe you can make a CPU consume comparison among browser and share your result. Sorry for my terrible English. Take care.

  • @Chocobito

    CPU consumption is interesting but harder to measure correctly because it comes in short spikes. It would require much higher poll rate (three seconds won’t do), that may itself affect OS.

    There is also factor of storage that may affect CPU usage. Or so I think.

    I will try to add CPU monitoring to script (probably on weekend) and will see if it makes enough sense to update post. Thanks for suggestion and sharing your experience!

  • I’m not sure exactly how you’re script works but couldn’t you use Sysinternals / Microsofts Process Explorer to monitor cpu over the runs?

  • @Jonny

    That would be visual but not too correct of methodic. Process Explorer can be quite resource hungry itself and without logging capabilities unfit as emasurement tool.

    It’s not a problem to log CPU usage, it’s problem to do it rapidly, accurately and without influencing system performance which might shift the very CPU usage being measured.

  • Hi Rarst,

    I am here after a long time.

    Nice autoit script.

    Will test on my Lappy.

  • @Nihar

    Glad to see you. :) You was missing longer than usual.

  • Ben

    hey have you guys tried the GreenBrowser? http://www.morequick.com/indexen.htm

    It has been almost always using half of the memory of Firefox according to my experience

  • @Ben

    As I understand that one runs on IE engine. Since IE is quite integrated into Windows it is considered hard to single out real memory usage for it.

  • […] I did my browser memory benchmarks I had coded in Ctrl+W to close tabs. Worked like a charm in Opera. Worked like a charm in Firefox, […]

  • Steve

    Browsers are from bad to worse and nobody takes care of !!! Developers developing development of wasted resources and somewhat browsers are more heavy as some FEA FEM 3D CAD simulation software packages ! The developers of browsers are going MAD and intentionally or not working for IT hardware industry. But do not be fooled into that if you buy a 6 core AMD 3 GHz on AMD mobo with 16 GB RAM that that solve the problem ! On that comp Opera browser chokes just about in the same manor as on some low hardware spec ! Nothing changes the problems get only worse !!! All branded browsers are not immune to this just testing Comodo IceDragon and it just crashes few times ! just about nothing changes ! Chrome browsers crash very rare for me just happens once but RAM problems and problematic notorious pathogenic pathological java script miss use is outrageous ! Without java web/browsers becomes unusable with it huge and tremendous problems. All these browsers are just i like to call them ”10 page browsers” – its somewhat threshold to choked OS ! If you use flash then you have shot
    your system into knee ! That that was a bsod for MS in the past are today browsers ! The best cure for not to put your nerves goes sky high is not to use internet at all ! Im surprised that no one is suing developers for crappy work ! I suggest that all web content is running on servers and not on users computers this way no one will waist resources as they do to day ! And let them buy supercomputers to serve web no us to browse internet !

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