Re: [SLUG] firefox is seriously dragging

From: Eben King (eben01@verizon.net)
Date: Fri Jul 17 2009 - 01:32:03 EDT

On Thu, 16 Jul 2009, Paul M Foster wrote:

> On Thu, Jul 16, 2009 at 05:50:25PM -0400, Eben King wrote:
>
>> On Thu, 16 Jul 2009, Pamela J. Ashworth (webmail) wrote:
>>
>>> Ajax (programming) (Asynchronous JavaScript and XML), a technique used in
>>> web application development
>>
>> How do I check if FF 3.0.11 supports it, if it's enabled, if NoScript
>> blocks it, and so on? Since I hadn't heard of it, odds are nothing here
>> runs it.
>
> If you have javascript enabled, it supports Ajax. Ajax isn't a language,
> it's a technique. Normally, ASP or PHP or whatever web pages are served
> up from the server to your browser, and that's it. Sometimes they'll
> have embedded javascript, which runs on the client end (your browser),
> independent of the server. But when the javascript talks back to the
> server, that's Ajax. For example, say you enter a character in a
> customer name, and a dropdown box gives you customer choices with that
> character in the name. Then type in another character and the list
> narrows. Etc. That's javascript talking back to the server every time
> you type a letter, and that's Ajax.
>
> In any case, if you have 100 tabs open and javascript enabled, then
> you're on some sites using Ajax. But that won't necessarily do anything
> either way to your performance.
>
> Your problem is 100 tabs. It may not have been so problematic before,
> but you hit a site that really hits the limit for your
> browser/memory/cpu. Or the particular combination of daemons and
> programs you're running and sites you're visiting happened to hit the
> limit. I was using my browser the other day with about ten tabs and CPU
> was about 5-10%. Then I went to a site with a marquee on it (scrolling
> message). Usage jumped to about 80-90% until I dumped that tab.

I've seen that. And since FF isn't threaded you can't narrow down the
offending window by suspending each thread in turn until the load drops and
then seeing which window is nonresponsive.

I would love to ditch some tabs. Is there a way to get a list of all open
URLs, so I can start from "no tabs" and go upward if needed and not lose
data? 

-- 
-eben   QebWenE01R@vTerYizUonI.nOetP   royalty.mine.nu:81

He who will not reason is a bigot; he who cannot is a fool;
   and he who dares not is a slave.  -Sir William Drummond
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