320237 - local search (Cntrl-F) eats 100% cpu on 1Mb file

Status: RESOLVED DUPLICATE of bug 267885

(Toolkit :: Find Toolbar, defect)

Description

[Leonid]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; ru; rv:1.8) Gecko/20051111 Firefox/1.5
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; ru; rv:1.8) Gecko/20051111 Firefox/1.5

1)in a search toolbar (Cntrl-F), incremental searching is ALWAYS ON,
regardles of  tools->options->advanced->continuous...  setting.

2) Firefox 1.5 nearly hangs (eats 100% cpu for a long time, ~minute)
with incremental searching using a search toolbar (Cntrl-F)
on a moderate long (~1 Mb) file from the Google cache.

It is a Pentium III 1.2GHz CPU, current temperature  48 C

File that you are currently viewing

   Linkname: Intel 815 Chipset Family:82815G/82815EG Graphics and
          Memory Controller Hub (GMCH) for Use with Universal Socket
          370 Datasheet
        URL:
          http://64.233.183.104/search?q=cache:YWyoG-0biX0J:support.in
          tel.com/design/chipsets/datashts/29071401.pdf+intel+82815g+t
          rue+color&hl=ru
    Charset: utf-8
     Server: GWS/2.1
       Date: Wed, 14 Dec 2005 12:18:32 GMT
   Cache-Control: private
   Owner(s): None
       size: 29438 lines


Reproducible: Always

Steps to Reproduce:
1. go to the described URL
2. Ctrl-F
3. Type something using a keyboard in the bottom toolbar,
say, 32

Actual Results:  
It will hang for dozens of seconds after the first char
before you could enter the second char.
You may try any other search string for that URL.


Expected Results:  
You should not see any visible delay

Additionally, the disabling of incremental search mode is broken.

Comment 1

[Adam Guthrie]

aguthrie@lappy:~$ grep -c 32 search.html
1232

*** This bug has been marked as a duplicate of 251862 ***

Comment 2

[Adam Guthrie]

What do you mean by "incremental search"? Do you mean that you have highlighting turned on (all the words appear in yellow)?

Comment 3

[Leonid]

(In reply to comment #2)
> What do you mean by "incremental search"? Do you mean that you have
> highlighting turned on (all the words appear in yellow)?
> 

I do mean I write in the search string char-by-char with a keyboard.

Let the string I am looking for is "search". What I see is the page scrolled to the first "s" (and it is highlited in green),
then "se"
then "sea"
then "sear"
then "searc"
then "search"
(if the next char gets the negative result - Find Toolbar window became highlited in red).

You wrote:
> aguthrie@lappy:~$ grep -c 32 search.html
> 1232

Well, you need
  grep -c 3 search.html
first, and get a more impressive number.

Any way, it should not be a problem with a text which fits in memmory (really 0.5% of memory), and I highly impressed that this critical bug was not resolved for a year or so, as it follows from the duplicated reports. Unfortunately, I have no profiler nor development environment on this platform to fix myself. Also the url in question is broken for now, but you may have a copy (search.html).

Comment 4

[Jo Hermans]

bug 267885 / bug 293889

*** This bug has been marked as a duplicate of 267885 ***