bugzilla.mozilla.org will be intermittently unavailable on Saturday, March 24th, from 16:00 until 20:00 UTC.

slow user interface, cpu usage reaches 100% quite often



MailNews: Message Display
15 years ago
13 years ago


(Reporter: Nehal M, Unassigned)


Firefox Tracking Flags

(Not tracked)




15 years ago
User-Agent:       Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.3) Gecko/20030313
Build Identifier: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.3) Gecko/20030313


(i really didnt know which component to put this bug in, so i used browser-general)

i find the user interface very slow, my cpu usage reaches 100% quite often when
using mozilla (i have a cpu load monitor on my taskbar to see this) and has been
like this ever since i started using mozilla (although current versions are
faster than older versions), some examples are

1. when clicking on the 'mail & newgroups' icon in my browser, my hard drive
does not grind, but it takes about 2 seconds to open up

2. when inside the mail program, double clicking on a message to open it up
takes about 1.5 seconds to open up

3. resizing the panels in the mail program has a quite a lag, off course it
can't be immediate, but still, i think it should be much faster

4. etc...

these are just small delays, but if u use mozilla quite often like i do, it can
make quite a difference...

this happens on linux, and to a lesser extent on win98se ... and i doubt its my
system because compared to any other programs, mozilla's user interface is
noticeably much slower ...  i have tried compiling myself using some
optimization flags on gcc 3.2.2 "-O2 -march=pentium3 -mmmx -msse -mfpmath=sse
-fomit-frame-pointer" but it did not help at all (although i heard other people
say it did help them), btw, on linux i am using gtk-1.2 for mozilla

my system: celeron II 733mhz (66mhz fsb), 128 meg ram (100 meg swap), Matrox
G200 (16 meg AGP) vid card, i use slackware 9.0 with icewm

i've heard some people say it is due to XML, im not sure if this is true or
not.. are there any ways for me to speed up? will it be faster in future releases?

i dont think phoenix is suitable for me, it doesnt have mail client, also it
seems to helps more on the memory side, not that much for CPU usage side though

thankyou, Nehal

Reproducible: Always

Steps to Reproduce:

Comment 1

15 years ago
->mailnews, since the problems reported refer only to it.

Assignee: asa → sspitzer
Component: Browser-General → Mail Window Front End
Product: Browser → MailNews
QA Contact: asa → esther

Comment 2

15 years ago
well i didnt mean mailnews specifically, those are just the big ones, but since
the major slow UI items are in mail+news i guess it's ok

Comment 3

14 years ago
I agreee with the original bug writer. Just simpling selecting a mail message
spikes the cpu on my system and there is a short, but noticable delay in the
message being displayed in the bottom pane. I have been using Netscape Comm.
4.79 to read email without any of these symptoms. It does get quite frustrating
when pasrsing through dozens of messages. I noticed this in versions 1.6 and the
latest 1.7b. My system configuration:

Sun Microsystems Sunblade 100
1gb memory
Solaris 9
CDE Windowing
Mozilla 1.7b build id# 2004042303

Product: Browser → Seamonkey

Comment 4

13 years ago
I had the delay in opening emails as well.  Deleting and moving too.  It was
getting to the point where I was going to switch to Thunderbird to see if it was
better.  I have already tried reinstalling Mozilla with no luck.  Compacting the
folders also did not help.

Poking around in the Mozilla files, I found that my Inbox file was HUGE (5 MB)
when I had only 20K of email in it.

This is what I did to resolve it:
Moved the 3 emails to a new folder.
Exited Mozilla mail
Found the Inbox file and deleted it.
Created a new 0 byte Inbox file.
Restarted Mozilla Mail
moved messages back to Inbox.

I don't know why, but the 5 MB Inbox file seemed to really drag on performance.
 I am surprised that compacting the folder did not resolve it.

Performance is back to how I expect it to be now.

Keep up the good work on Mozilla/Firefox/Thunderbird!


13 years ago
Assignee: sspitzer → mail
This is an automated message, with ID "auto-resolve01".

This bug has had no comments for a long time. Statistically, we have found that
bug reports that have not been confirmed by a second user after three months are
highly unlikely to be the source of a fix to the code.

While your input is very important to us, our resources are limited and so we
are asking for your help in focussing our efforts. If you can still reproduce
this problem in the latest version of the product (see below for how to obtain a
copy) or, for feature requests, if it's not present in the latest version and
you still believe we should implement it, please visit the URL of this bug
(given at the top of this mail) and add a comment to that effect, giving more
reproduction information if you have it.

If it is not a problem any longer, you need take no action. If this bug is not
changed in any way in the next two weeks, it will be automatically resolved.
Thank you for your help in this matter.

The latest beta releases can be obtained from:
Firefox:     http://www.mozilla.org/projects/firefox/
Thunderbird: http://www.mozilla.org/products/thunderbird/releases/1.5beta1.html
Seamonkey:   http://www.mozilla.org/projects/seamonkey/
This bug has been automatically resolved after a period of inactivity (see above
comment). If anyone thinks this is incorrect, they should feel free to reopen it.
Last Resolved: 13 years ago
Resolution: --- → EXPIRED
You need to log in before you can comment on or make changes to this bug.