This is the version I am already using (1.5X.0a23).

On 4 sep, 08:49, Jan Odvarko <[email protected]> wrote:
> I would be curious if Firebug 1.5a23 solves these performance
> problems.http://getfirebug.com/releases/firebug/1.5X/firebug-1.5X.0a23.xpi
>
> We have made some performance optimization based on some fixed Firefox
> bugs.
> Honza
>
> On Sep 3, 7:06 pm, Pierre Bertet <[email protected]> wrote:
>
> > I am encountering the same performance issue since version 1.4 (OS X
> > 10.5 and Windows XP SP2): when Firebug is on, Firefox becomes really,
> > really slow.
>
> > On 27 août, 17:45, johnjbarton <[email protected]> wrote:
>
> > > Without a test case there is not a single thing we can do about this
> > > problem.
> > > jjb
>
> > > On Aug 27, 12:20 am, Tom <[email protected]> wrote:
>
> > > > I am also getting horriblyslowperformances with firebug since 1.4
> > > > just take seconds sometime to switch tabs I have the feeling that DOM
> > > > tab is the root of the problem but I might be wrong. I am running
> > > > Windows 2008 and Firefox 3.013. Is the only solution to have
> > > > acceptable performances to downgrade to 1.3 which was working fine ?  :
> > > > (
>
> > > > On Aug 10, 4:21 am, johnjbarton <[email protected]> wrote:
>
> > > > > Eddie does the tracing console show ERRORS? I'm guessing maybe
> > > > > "charCode" errors?
> > > > > jjb
>
> > > > > On Aug 9, 11:10 am, Ed Abrams <[email protected]> wrote:
>
> > > > > > So far, with the tracing version, I have been able to reproduce the
> > > > > > problem and make my mac go crazy on the fans (CPU maxed out), but I
> > > > > > have not yet thrown the stop script exception that will give the 
> > > > > > line
> > > > > > number.  I'll keep trying.  It would be helpful to know whether 
> > > > > > other
> > > > > > people with the same platform can reproduce this.
>
> > > > > > -Eddie
>
> > > > > > On Aug 5, 2:08 pm, johnjbarton <[email protected]> wrote:
>
> > > > > > > Eddie, please install Firebug1.4X.2, open the tracing window with
> > > > > > > ERRORS set, and repeat the test, post the trace on our bug report
> > > > > > > list.
> > > > > > > More 
> > > > > > > info:http://groups.google.com/group/firebug/web/faq-about-firebug.
> > > > > > > I'll post back here with the results.
> > > > > > > (The line number in1.4.2 are different from1.4X)
> > > > > > > jjb
>
> > > > > > > On Aug 5, 10:32 am, Ed Abrams <[email protected]> wrote:
>
> > > > > > > > Hello,
>
> > > > > > > > Here is my platform: Mac OSX Leopard (10.5.7).
>
> > > > > > > > Here is my browser: Firefox 3.5.2 (Build identifier: Mozilla/5.0
> > > > > > > > (Macintosh; U; Intel Mac OS X 10.5; en-US; rv:1.9.1.2) 
> > > > > > > > Gecko/20090729
> > > > > > > > Firefox/3.5.2)
>
> > > > > > > > Here is my Firebug:1.4.2
>
> > > > > > > > Problem: Crazy-badperformancein any window under test case
>
> > > > > > > > Test case:
> > > > > > > >  * open firefox 3.5 and several tabs
> > > > > > > >  * in one tab, go to gmail.com
> > > > > > > >  * disable firebug
> > > > > > > >  * go to gmail.com
> > > > > > > >  * verify thatperformancein all cases is normal
> > > > > > > >  * enable firebug
> > > > > > > >  * enable every firebug panel EXCEPT console (disabled)
> > > > > > > >  * verify thatperformancein all cases is normal
> > > > > > > >  * enable the CONSOLE
> > > > > > > >  * in gmail, click 'compose message'
> > > > > > > >  * start typing
>
> > > > > > > > PROBLEM: theperformancehas become so bad that the characters 
> > > > > > > > you're
> > > > > > > > typing only appear at a rate of 1 character per second.  Every 
> > > > > > > > other
> > > > > > > > tab and window is alsoperformance-hit.  If you try, you can get 
> > > > > > > > the
> > > > > > > > 'stop script' dialog to appear, which cites a Firebug script, 
> > > > > > > > lib.js,
> > > > > > > > at line 1176 (I think -- I should double check) as being the 
> > > > > > > > lagging
> > > > > > > > line.
>
> > > > > > > > I hope this helps.
>
> > > > > > > > -Eddie
>
> > > > > > > > On Aug 4, 3:21 pm, Prefontim <[email protected]> wrote:
>
> > > > > > > > > I am also getting extremely slowperformancewith Firebug1.4.x 
> > > > > > > > > on FF
> > > > > > > > > 3.0.  Firebug 1.3.3 did not have this issue.  I disabled all 
> > > > > > > > > other
> > > > > > > > > plug-ins, but that did not help.  Then, I tested it on a new 
> > > > > > > > > profile,
> > > > > > > > > and that did not help either.  Firebug is tooslowto be usable 
> > > > > > > > > at
> > > > > > > > > this point.  I will have to use 1.3.3 (which is also almost 
> > > > > > > > > too buggy
> > > > > > > > > to be usable) for now.
>
> > > > > > > > > On Aug 4, 10:38 am, ak732 <[email protected]> wrote:
>
> > > > > > > > > > @SteveG:
>
> > > > > > > > > > I am seeing pretty goodperformanceacross all tabs at this 
> > > > > > > > > > point.  I
> > > > > > > > > > can pretty much just leave firebug on all the time now 
> > > > > > > > > > w/out seeing
> > > > > > > > > > any undueperformancehit.  At least on any sites I've visited
> > > > > > > > > > recently.
>
> > > > > > > > > > Note that the ipv6 fix had nothing to do with Firebug 
> > > > > > > > > > itself.  It was
> > > > > > > > > > purely a WinVista/Firefoxperformanceissue.  I only thought 
> > > > > > > > > > it was
> > > > > > > > > > Firebug originally because it occurred coincidentally w/my 
> > > > > > > > > > creating a
> > > > > > > > > > new Firefox profile to try out the newer version of Firebug 
> > > > > > > > > > (and the
> > > > > > > > > > newer profiles are created w/ipv6 enabled by default, 
> > > > > > > > > > unlike the older
> > > > > > > > > > ones).
>
> > > > > > > > > > On Jul 27, 2:12 am, SteveG <[email protected]> wrote:
>
> > > > > > > > > > > I tried setting the network.dsn.disableIPv6 to true...  
> > > > > > > > > > > but the DOM
> > > > > > > > > > > inspector was still preforming veryslow?
> > > > > > > > > > > Are there any other workarounds that you know of?
>
> > > > > > > > > > > On Jul 21, 3:06 pm, ak732 <[email protected]> wrote:
>
> > > > > > > > > > > > After a bunch of digging, I found a 
> > > > > > > > > > > > Firefoxperformancetweak that
> > > > > > > > > > > > fixed the problem.  Hopefully this will help some 
> > > > > > > > > > > > others.  In summary,
> > > > > > > > > > > > I changed network.dsn.disableIPv6 from true to false.
>
> > > > > > > > > > > > 1.      Open Firefox 3.x.
> > > > > > > > > > > > 2.      Type “about:config” in the address bar and hit 
> > > > > > > > > > > > enter.
> > > > > > > > > > > > 3.      In the Filter bar, enter “network.dns”.
> > > > > > > > > > > > 4.      You should see a setting called 
> > > > > > > > > > > > “network.dsn.disableIPv6”.  It’s
> > > > > > > > > > > > likely set to “false”.
> > > > > > > > > > > > 5.      Double-click the setting 
> > > > > > > > > > > > “network.dsn.disableIPv6” which changes it
> > > > > > > > > > > > to true.
> > > > > > > > > > > > 6.      Close your browser.
> > > > > > > > > > > > 7.      Reload the browser.
> > > > > > > > > > > > 8.      Run the app and it should be considerably 
> > > > > > > > > > > > faster.
>
> > > > > > > > > > > > This improved load times for our, admittedly 
> > > > > > > > > > > > resource-heavy, web
> > > > > > > > > > > > application by around a factor or 10.  I suspect it 
> > > > > > > > > > > > might be a fix
> > > > > > > > > > > > that only matters on Windows Vista, maybe Win7.  
> > > > > > > > > > > > Anyway, it's easy
> > > > > > > > > > > > enough to try.
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