[Ubuntu-apps-bugs] [Bug 1585285] Re: Creating or switching to a new tab feels slow

2016-07-27 Thread Pat McGowan 
** Changed in: canonical-devices-system-image
   Status: Fix Committed => Fix Released

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Title:
  Creating or switching to a new tab feels slow

Status in Canonical System Image:
  Fix Released
Status in qtbase-opensource-src package in Ubuntu:
  New
Status in webbrowser-app package in Ubuntu:
  Fix Released

Bug description:
  bq M10 rc-proposed r112

  Steps to reproduce:
  1. Open few tabs with websites
  2. Click 'New tab' button

  Expected result:
  Browser creates new tab and switches to it immediately.

  What happens instead:
  New tab is created and browser switches to it after about 2-3 seconds. Long 
enough to makes me worried if everything is fine with it.

  Similar situation is when I have a 'new tab' already opened as a
  background tab. When I switch to it from a tab with a webpage, the
  action is taking too long.

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https://bugs.launchpad.net/canonical-devices-system-image/+bug/1585285/+subscriptions

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[Ubuntu-apps-bugs] [Bug 1585285] Re: Creating or switching to a new tab feels slow

2016-06-17 Thread Launchpad Bug Tracker 
This bug was fixed in the package webbrowser-app -
0.23+16.10.20160615-0ubuntu1

---
webbrowser-app (0.23+16.10.20160615-0ubuntu1) yakkety; urgency=medium

  * Fix the anchoring of the contents in the bookmarks views. (LP:
#1584385)
  * Various favicon optimizations. (LP: #1585285)
  * Load top site previews asynchronously to speed up the instantiation
of the grid view. (LP: #1585285)
  * Fix cross-compilation for armhf on a x86* host. (LP: #1588788)
  * Update UA overrides (mobile) for youtube and gmail.

 -- Olivier Tilloy   Wed, 15 Jun 2016
09:35:09 +

** Changed in: webbrowser-app (Ubuntu)
   Status: In Progress => Fix Released

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https://bugs.launchpad.net/bugs/1585285

Title:
  Creating or switching to a new tab feels slow

Status in Canonical System Image:
  Fix Committed
Status in qtbase-opensource-src package in Ubuntu:
  New
Status in webbrowser-app package in Ubuntu:
  Fix Released

Bug description:
  bq M10 rc-proposed r112

  Steps to reproduce:
  1. Open few tabs with websites
  2. Click 'New tab' button

  Expected result:
  Browser creates new tab and switches to it immediately.

  What happens instead:
  New tab is created and browser switches to it after about 2-3 seconds. Long 
enough to makes me worried if everything is fine with it.

  Similar situation is when I have a 'new tab' already opened as a
  background tab. When I switch to it from a tab with a webpage, the
  action is taking too long.

To manage notifications about this bug go to:
https://bugs.launchpad.net/canonical-devices-system-image/+bug/1585285/+subscriptions

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[Ubuntu-apps-bugs] [Bug 1585285] Re: Creating or switching to a new tab feels slow

2016-06-17 Thread Jean-Baptiste Lallement 
** Also affects: canonical-devices-system-image
   Importance: Undecided
   Status: New

** Changed in: canonical-devices-system-image
   Status: New => Fix Committed

** Changed in: canonical-devices-system-image
   Importance: Undecided => High

** Changed in: canonical-devices-system-image
Milestone: None => 12

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You received this bug notification because you are a member of Ubuntu
Apps bug tracking, which is subscribed to webbrowser-app in Ubuntu.
https://bugs.launchpad.net/bugs/1585285

Title:
  Creating or switching to a new tab feels slow

Status in Canonical System Image:
  Fix Committed
Status in qtbase-opensource-src package in Ubuntu:
  New
Status in webbrowser-app package in Ubuntu:
  In Progress

Bug description:
  bq M10 rc-proposed r112

  Steps to reproduce:
  1. Open few tabs with websites
  2. Click 'New tab' button

  Expected result:
  Browser creates new tab and switches to it immediately.

  What happens instead:
  New tab is created and browser switches to it after about 2-3 seconds. Long 
enough to makes me worried if everything is fine with it.

  Similar situation is when I have a 'new tab' already opened as a
  background tab. When I switch to it from a tab with a webpage, the
  action is taking too long.

To manage notifications about this bug go to:
https://bugs.launchpad.net/canonical-devices-system-image/+bug/1585285/+subscriptions

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[Ubuntu-apps-bugs] [Bug 1585285] Re: Creating or switching to a new tab feels slow

2016-05-27 Thread Olivier Tilloy 
On my beefy laptop, when opening a new tab, the UrlGridView for the list
of top sites in the new tab view takes ~250ms to instantiate, of which
almost half the time (115ms) is for instantiating the Loader that
contains one Favicon.

After moving away the favicons cache folder, instantiating the favicons
is almost instantaneous (they are being re-downloaded on a different
thread), and instantiating the UrlGridView is down to 170ms, which is
still expensive, but better.

I instrumented the favicon fetcher code, and the culprit seems to be the
first icon being downloaded (usually because the favicon doesn’t
actually exist, but we’re not tracking that, so we try to download it
anyway because it hasn’t been cached on disk). Specifically, on my
laptop instantiating the first QNetworkAccessManager takes ~100ms. One
QNAM is being instantiated for each favicon that we fetch from the
network, but the subsequent instantiations are free, only the first one
is expensive. This would need some further investigation in Qt itself.

One optimization we could try to apply is to cache an empty file on disk
for non-existent favicons, in order to avoid trying to re-download them
over and over again.

** Changed in: webbrowser-app (Ubuntu)
   Importance: Undecided => High

** Changed in: webbrowser-app (Ubuntu)
 Assignee: (unassigned) => Olivier Tilloy (osomon)

** Also affects: qtbase-opensource-src (Ubuntu)
   Importance: Undecided
   Status: New

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You received this bug notification because you are a member of Ubuntu
Apps bug tracking, which is subscribed to webbrowser-app in Ubuntu.
https://bugs.launchpad.net/bugs/1585285

Title:
  Creating or switching to a new tab feels slow

Status in qtbase-opensource-src package in Ubuntu:
  New
Status in webbrowser-app package in Ubuntu:
  Confirmed

Bug description:
  bq M10 rc-proposed r112

  Steps to reproduce:
  1. Open few tabs with websites
  2. Click 'New tab' button

  Expected result:
  Browser creates new tab and switches to it immediately.

  What happens instead:
  New tab is created and browser switches to it after about 2-3 seconds. Long 
enough to makes me worried if everything is fine with it.

  Similar situation is when I have a 'new tab' already opened as a
  background tab. When I switch to it from a tab with a webpage, the
  action is taking too long.

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/qtbase-opensource-src/+bug/1585285/+subscriptions

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