Bug 820944

Summary:	JavaScript uses excessive amount of CPU power
Product:	[Community] Bugzilla	Reporter:	Mikolaj Izdebski <mizdebsk>
Component:	Performance	Assignee:	Simon Green <sgreen>
Status:	CLOSED CURRENTRELEASE	QA Contact:
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	4.2	CC:	christoph.wickert, ebaak, sgreen
Target Milestone:	4.2-1
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	4.2.1-0.rc3	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2012-05-14 06:46:38 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	786624

Description Mikolaj Izdebski 2012-05-11 11:50:16 UTC

Description of problem:
During advanced search BZ hangs web browser until JavaScript is aborted.

How reproducible:
Always.

Steps to Reproduce:
1. Go to Search -> Advanced Search
2. Select Classification: Fedora
3. Select Product: Fedora
  
Actual results:
After selecting produce Fedora: the browser appears to hang up. It eats 100% CPU. After some time (like half a minute), a message box appears saying:

  A script on this page may be busy, or it may have stopped responding. You can
  stop the script now, or you can continue to see if the script will complete.

  Script: https://partner-bugzilla.redhat.com/js/productform.js:300

Expected results:


Additional info:

I'm using RHEL 6.2
firefox-3.6.24-3.el6_1.x86_64

Comment 2 Simon Green 2012-05-14 06:48:19 UTC

Now uses less power, but still quite a lot when displaying Fedora components (there is a whole lot of them). I'll see how this goes before making more changes.

  -- simon

Comment 3 Christoph Wickert 2012-06-08 12:54:42 UTC

Still very bad performance. Even though I have a fast machine (Intel i5 @ 2.40GHz, 4 GB RAM) it hangs every time.