Comments on: Firebug and the JIT http://antennasoft.net/robcee/2009/12/15/firebug-and-the-jit/ more than just sandwiches Wed, 28 Mar 2012 15:43:45 +0000 hourly 1 http://wordpress.org/?v=3.3.2 By: Marcus http://antennasoft.net/robcee/2009/12/15/firebug-and-the-jit/comment-page-1/#comment-91773 Marcus Wed, 12 May 2010 22:01:15 +0000 http://antennasoft.net/robcee/?p=377#comment-91773 I was under the impression in Firefox 3.6 and Firebug 1.5 this issue was fixed. However with the Firebug console and script panel enabled I'm getting over 40ms on http://people.mozilla.com/~vladimir/ss/hosted/bitops-bitwise-and.html, but with disabled I'm getting less than 5ms. Firefox 3.6.4 Firebug 1.5.4 Can you offer any insight? I was under the impression in Firefox 3.6 and Firebug 1.5 this issue was fixed.
However with the Firebug console and script panel enabled I’m getting over 40ms
on http://people.mozilla.com/~vladimir/ss/hosted/bitops-bitwise-and.html,
but with disabled I’m getting less than 5ms.

Firefox 3.6.4
Firebug 1.5.4

Can you offer any insight?

]]> By: Firefox+Firebug: Slowdown Explained? | K-Squared Ramblings http://antennasoft.net/robcee/2009/12/15/firebug-and-the-jit/comment-page-1/#comment-89057 Firefox+Firebug: Slowdown Explained? | K-Squared Ramblings Thu, 17 Dec 2009 07:49:43 +0000 http://antennasoft.net/robcee/?p=377#comment-89057 [...] Firebug slows down JavaScript even if it’s not active on the current page. That explains a LOT! # Facebook & Gmail run [...] [...] Firebug slows down JavaScript even if it’s not active on the current page. That explains a LOT! # Facebook & Gmail run [...]

]]> By: robcee http://antennasoft.net/robcee/2009/12/15/firebug-and-the-jit/comment-page-1/#comment-89052 robcee Thu, 17 Dec 2009 00:43:33 +0000 http://antennasoft.net/robcee/?p=377#comment-89052 thanks for pointing us to this. It's currently fixed on trunk and I was seeing times of 250ms (compared to 7200ms) on my machine. I filed https://bugzilla.mozilla.org/show_bug.cgi?id=535436 to track the regression. Hopefully we'll get this into 3.6 before ship. thanks for pointing us to this. It’s currently fixed on trunk and I was seeing times of 250ms (compared to 7200ms) on my machine.

I filed https://bugzilla.mozilla.org/show_bug.cgi?id=535436 to track the regression. Hopefully we’ll get this into 3.6 before ship.

]]> By: schnalle http://antennasoft.net/robcee/2009/12/15/firebug-and-the-jit/comment-page-1/#comment-89050 schnalle Wed, 16 Dec 2009 23:21:23 +0000 http://antennasoft.net/robcee/?p=377#comment-89050 um, actually i implemented it today (it's a dirty hack). not a real benchmark. i added the numbers from my system; seems i made a mistake in me previous post. deactivating FF does speed things up, from ~3.1s to ~2.4s. still i wonder: why is the difference tracemonkeys tracing JIT makes so small? heres the demo: http://jsastar.tapirpirates.net/ um, actually i implemented it today (it’s a dirty hack). not a real benchmark.

i added the numbers from my system; seems i made a mistake in me previous post. deactivating FF does speed things up, from ~3.1s to ~2.4s. still i wonder: why is the difference tracemonkeys tracing JIT makes so small?

heres the demo:
http://jsastar.tapirpirates.net/

]]> By: robcee http://antennasoft.net/robcee/2009/12/15/firebug-and-the-jit/comment-page-1/#comment-89049 robcee Wed, 16 Dec 2009 22:14:23 +0000 http://antennasoft.net/robcee/?p=377#comment-89049 @schnalle: Would you consider posting a link to your benchmark? I know some people who might like to take a look at it. @schnalle: Would you consider posting a link to your benchmark? I know some people who might like to take a look at it.

]]> By: schnalle http://antennasoft.net/robcee/2009/12/15/firebug-and-the-jit/comment-page-1/#comment-89047 schnalle Wed, 16 Dec 2009 21:47:18 +0000 http://antennasoft.net/robcee/?p=377#comment-89047 recently i implemented an a* search (just for fun). benchmarks made me cry - google chrome is almost 10 times as fast as firefox 3.5.5 (naive benchmarking across a 200x200 matrix, ff takes ~3sec, chrome ~250ms). and i thought ffs tracing jit would shine here, because it's nothing more than some tight loops. when i read your article, the problem was clear. so i completely deactivated the firebug addon (just to be sure), restarted the browser and ... no noticeable difference. recently i implemented an a* search (just for fun). benchmarks made me cry – google chrome is almost 10 times as fast as firefox 3.5.5 (naive benchmarking across a 200×200 matrix, ff takes ~3sec, chrome ~250ms).

and i thought ffs tracing jit would shine here, because it’s nothing more than some tight loops.

when i read your article, the problem was clear. so i completely deactivated the firebug addon (just to be sure), restarted the browser and … no noticeable difference.

]]> By: robcee http://antennasoft.net/robcee/2009/12/15/firebug-and-the-jit/comment-page-1/#comment-89043 robcee Wed, 16 Dec 2009 18:32:35 +0000 http://antennasoft.net/robcee/?p=377#comment-89043 thanks for the correction, Dao. Updated the post. thanks for the correction, Dao. Updated the post.

]]> By: Dao http://antennasoft.net/robcee/2009/12/15/firebug-and-the-jit/comment-page-1/#comment-89042 Dao Wed, 16 Dec 2009 18:06:25 +0000 http://antennasoft.net/robcee/?p=377#comment-89042 "It provides a major speedup for code running in Firefox 3.0 and up, often an order of magnitude for certain types of operations." Not in 3.0, 3.5 was the first release featuring TraceMonkey. “It provides a major speedup for code running in Firefox 3.0 and up, often an order of magnitude for certain types of operations.”

Not in 3.0, 3.5 was the first release featuring TraceMonkey.

]]> By: Mathis Fenne http://antennasoft.net/robcee/2009/12/15/firebug-and-the-jit/comment-page-1/#comment-89039 Mathis Fenne Wed, 16 Dec 2009 12:52:21 +0000 http://antennasoft.net/robcee/?p=377#comment-89039 Hey. This is good news. We use firebug a lot when creating front-end solutions for our customers, and we have had some issues with performance :) Hey. This is good news. We use firebug a lot when creating front-end solutions for our customers, and we have had some issues with performance :)

]]> By: Navneet http://antennasoft.net/robcee/2009/12/15/firebug-and-the-jit/comment-page-1/#comment-89035 Navneet Wed, 16 Dec 2009 06:28:07 +0000 http://antennasoft.net/robcee/?p=377#comment-89035 I am using Firebug 1.3.3 for the same reason. Firebug 1.4.x causes drastic slowness when the net panel is enabled I am using Firebug 1.3.3 for the same reason.
Firebug 1.4.x causes drastic slowness when the net panel is enabled

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