If you think a bug might affect users in the 57 release, please set the correct tracking and status flags for Release Management.

CPU use randomly jumps to 50% then to 100%

RESOLVED EXPIRED

Status

MailNews Core
Backend
RESOLVED EXPIRED
14 years ago
9 years ago

People

(Reporter: Yuri Babich, Assigned: (not reading, please use seth@sspitzer.org instead))

Tracking

Other Branch
x86
Windows XP

Firefox Tracking Flags

(Not tracked)

Details

(Reporter)

Description

14 years ago
User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.5) Gecko/20031007
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.5) Gecko/20031007

After several hours of work the CPU load (used by Mozilla ~= total) reaches a
high level (e.g. 50% or 100%). The task manager shows a constant line, not a
peak. The responsiveness of mozilla GUI however is relatively good. Other
applications seem to slow down only a little (sometimes noticably - but that may
be inteferenced by the virus scanner or sth.).

Total CPU measurements:
Measurement 1: ~1% at start, after ca. 110 min. -> 50%, after ca 35 Min -> 90%.
Measurement 2: ~1% at start, after pretty much exactly 30 min. -> 50%, after
pretty much exactly 60 Min -> 100%.

No apparent reason. Happens without direct user interaction.

Reproducible: Always

Steps to Reproduce:
1.Start mail only (not browser), enter passwords to download messages.
2.Work with other applications, read new messages as they arrive.





CPU: Pentium 4 (2.6 GHz) with Hyperthreading. (with 50%, the virtual processors
show uneven curves approx. 15% [0] and 85% [1])
Mozilla profile from previous versions was kept (installed each time the new
over old Mozilla).
There are several POP (various periods between checking for new mail) and one
IMAP account as well as NGs. (Problem happened even if not opening news and
browser.)

P.S. Don't know which Mozilla component actually responsible.
(Reporter)

Comment 1

14 years ago
I have downgraded to Moz 1.4.1 and the problem persists.
Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.4.1) Gecko/20031008

P.S. RAM/pagefile are large and not the issue. Hyperthreading of P4??? Other
applications don't have problems.
Version: Trunk → Other Branch
Product: MailNews → Core
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.
Status: UNCONFIRMED → RESOLVED
Last Resolved: 12 years ago
Resolution: --- → EXPIRED
Product: Core → MailNews Core
You need to log in before you can comment on or make changes to this bug.