Opened on 07/01/2016 at 02:42:22 PM

Closed on 07/04/2016 at 01:32:45 PM

Last modified on 09/07/2016 at 11:13:34 AM

#4221 closed defect (fixed)

Startup performance decreased since build

Reported by: arthur Assignee: trev
Priority: P1 Milestone: Adblock-Plus-2.8-for-Firefox
Module: Adblock-Plus-for-Firefox Keywords:
Cc: trev, mapx Blocked By:
Blocking: #521 Platform: Firefox
Ready: yes Confidential: no
Tester: Ross Verified working: yes
Review URL(s):



Windows 10 Pro
Firefox Nightly 50.0a1 (20160701030235)

How to reproduce

  1. Subscribe to EasyList Germany, EasyPrivacy and Fanboy's Social Blocking List (issue seems more noticeable with more filter lists).
  2. Close Nightly and start it again
  3. Click the menu bottom immediately after starting and start hovering different buttons so you see them being highlighted

Observed behaviour

With ABP it takes some seconds until you see the defferent buttons being highlighted when hovering.

Expected behaviour

It shouldn't take this long. With it's noticeably shorter with the same configuration.

Attachments (0)

Change History (9)

comment:1 Changed on 07/02/2016 at 06:41:43 AM by mapx

  • Cc mapx added

comment:2 Changed on 07/02/2016 at 06:41:58 AM by mapx

comment:3 Changed on 07/04/2016 at 12:10:37 PM by trev

  • Owner set to trev
  • Priority changed from Unknown to P1
  • Ready set

As it is with performance issues, I cannot be sure that the issue I found is the one that the reporter saw. I see however lots of "elemhideupdate" messages being sent to the content process - one for every filter added. This causes noticeable slowdown and is completely unnecessary, one such message would have been sufficient.

Last edited on 07/04/2016 at 12:11:06 PM by trev

comment:4 Changed on 07/04/2016 at 12:16:55 PM by trev

  • Review URL(s) modified (diff)
  • Status changed from new to reviewing

comment:5 Changed on 07/04/2016 at 12:31:43 PM by trev

  • Blocking 521 added

comment:6 Changed on 07/04/2016 at 01:29:25 PM by abpbot

comment:7 Changed on 07/04/2016 at 01:32:45 PM by trev

  • Milestone set to Adblock-Plus-for-Firefox-next
  • Resolution set to fixed
  • Status changed from reviewing to closed

Please retest whether you can still see this issue with build Adblock Plus

comment:8 Changed on 07/04/2016 at 02:52:46 PM by arthur

I no longer notice the mentioned performance issues with

comment:9 Changed on 09/07/2016 at 11:13:34 AM by Ross

  • Tester changed from Unknown to Ross
  • Verified working set

Did not notice any startup performance issues.

Nightly 51.0a1 / Windows 10
Firefox 48 / Windows 7

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