Paul [pwd] Reporter
	Description • 9 years ago

User Agent: Mozilla/5.0 (X11; Ubuntu; Linux i686; rv:41.0) Gecko/20100101 Firefox/41.0
Build ID: 20150513191204

Steps to reproduce:

Confirmed as per the e10s thread on MozillaZine:
According to the web tools, it takes about 556ms to parse the index html. With e10s off, its taking 385ms. This may be worth filing a bug for.

	Tracy Walker [:tracy]
	Comment 1 • 9 years ago

Paul,  are you running this with any addons installed?  If so, please try disabling them all or trying in a clean profile.

	Paul [pwd] Reporter
	Comment 2 • 9 years ago

These actually weren't my numbers. My numbers are much slower, we suspect the delay are exacerbated on Linux.

	Mike Conley (:mconley) (:⚙️)
	Comment 3 • 9 years ago

So on my local Ubuntu VM, Nightly Linux does appear to retrieve the HTML document at the URL slightly faster without e10s than with e10s, but only around 10ms-20ms... not the hundreds of milliseconds that others are reporting.

Hey pwd - are you willing to gather a performance profile for me while loading this page in non-e10s and e10s mode? I show you how to get the profiler add-on and submit profiles here: https://www.youtube.com/watch?v=kGBs0BQsoQg&feature=youtu.be

	Paul [pwd] Reporter
	Comment 4 • 9 years ago

(In reply to Mike Conley (:mconley) - Needinfo me! from comment #3)
> So on my local Ubuntu VM, Nightly Linux does appear to retrieve the HTML
> document at the URL slightly faster without e10s than with e10s, but only
> around 10ms-20ms... not the hundreds of milliseconds that others are
> reporting.
> 
> Hey pwd - are you willing to gather a performance profile for me while
> loading this page in non-e10s and e10s mode? I show you how to get the
> profiler add-on and submit profiles here:
> https://www.youtube.com/watch?v=kGBs0BQsoQg&feature=youtu.be

Sure thing: http://people.mozilla.org/~bgirard/cleopatra/#report=47729bf54b1fed2f6bb42a127590e846ae5ad413

	Mike Conley (:mconley) (:⚙️)
	Comment 5 • 9 years ago

Hrm. I'm afraid there are no symbols in this profile. :( I have a feeling our symbol server was misbehaving when you gathered this.

Would you mind going into about:config, and setting profiler.symbolicationUrl to http://symbolapi.mocotoolsprod.net/ and trying again?

	Paul [pwd] Reporter
	Comment 6 • 9 years ago

(In reply to Mike Conley (:mconley) - Needinfo me! from comment #5)
> Hrm. I'm afraid there are no symbols in this profile. :( I have a feeling
> our symbol server was misbehaving when you gathered this.
> 
> Would you mind going into about:config, and setting
> profiler.symbolicationUrl to http://symbolapi.mocotoolsprod.net/ and trying
> again?

I cannot get the profile out because it keeps crashing my Firefox with OOM problems.

	Mike Conley (:mconley) (:⚙️)
	Comment 7 • 9 years ago

(In reply to Paul [pwd] from comment #6)
> (In reply to Mike Conley (:mconley) - Needinfo me! from comment #5)
> > Hrm. I'm afraid there are no symbols in this profile. :( I have a feeling
> > our symbol server was misbehaving when you gathered this.
> > 
> > Would you mind going into about:config, and setting
> > profiler.symbolicationUrl to http://symbolapi.mocotoolsprod.net/ and trying
> > again?
> 
> I cannot get the profile out because it keeps crashing my Firefox with OOM
> problems.

Hrm. Ok, if you go into the settings of the profiler (Add-on button > Settings > Advanced), can you reduce the number of samples? Maybe by like... 30%?

	Paul [pwd] Reporter
	Comment 8 • 9 years ago

For some reason, it wouldn't upload, so here's one.

	Paul [pwd] Reporter
	Comment 9 • 9 years ago

Here's another one.

	Mike Conley (:mconley) (:⚙️)
	Comment 10 • 9 years ago

Great, ok, I can see that one - I've uploaded it here:

http://people.mozilla.org/~bgirard/cleopatra/#report=c0f501990d47dc4d9b3c0fe1983e5ba84ce6fefa&selection=0,1,2,2,3,4,5,5,6,7,8,6,9,10,5,6,6,6,6,6,12,1132

The problem with it is that it only shows the main process. I also need samples from the content process - so I'm going to ask you to do this again, but can you do it with a recent Nightly build, and using the latest version of the Gecko Profiler Add-on (1.16.2 or higher)?

	Paul [pwd] Reporter
	Comment 11 • 9 years ago

It is Profiler 1.16.2. Also I'd love to but the Ubuntu nightly repo hasn't been updated since 0513, if you know of anyone who can get them kicked off again, I'll be happy to provide you any data you require.

I've filed a bug about the Ubuntu nightly builds being outdated here: https://bugs.launchpad.net/ubuntu-mozilla-ppa-bugs/+bug/1466230

I've not cleared the needinfo as hopefully a new build will pop out in the next few days and I can get a more meaningful profile for you.

	Mike Conley (:mconley) (:⚙️)
	Comment 12 • 9 years ago

Alternatively, you could download one of the Mozilla builds for Linux at https://nightly.mozilla.org/

	Paul [pwd] Reporter
	Comment 13 • 9 years ago

(In reply to Mike Conley (:mconley) - Needinfo me! from comment #12)
> Alternatively, you could download one of the Mozilla builds for Linux at
> https://nightly.mozilla.org/

I have a slight OCD in regards to directory structure. Believe me, with the inconsistency of the Ubuntu Nightly releases, I'd love to ditch them for something whereby I'd get my nightly releases directly from Mozilla.

	Mike Conley (:mconley) (:⚙️)
	Comment 14 • 9 years ago

Fair enough. :)

	Paul [pwd] Reporter
	Comment 15 • 9 years ago

New profile from the nightly of 20150718 which is apparently too big to attach: https://www.dropbox.com/s/0nqxrf5h0mtavmd/knDuqug%2B.bin?dl=0

	Mike Conley (:mconley) (:⚙️)
	Comment 16 • 9 years ago

Ah, okay, I see what's happening - we're spending a lot of time inside the ContentPolicy add-on shim.

Can you please list me your enabled add-ons from about:support?

	Paul [pwd] Reporter
	Comment 17 • 9 years ago

Adblock Plus	2.6.10.3970	true	{d10d0bf8-f5b5-c8b4-a8b2-2b9879e08c5d}
Brief	2.0b3	true	brief@mozdev.org
British English Dictionary	1.19.1	true	en-GB@dictionaries.addons.mozilla.org
Bugzilla Tweaks	1.12.1.1.1-signed	true	jid0-qBnIpLfDFa4LpdrjhAC6vBqN20Q@jetpack
DictionarySearch	28.0.0.1-signed	true	{a0faa0a4-f1a7-4098-9a74-21efc3a92372}
FlashGot	1.5.6.12rc2	true	{19503e42-ca3c-4c27-b1e2-9cdb2170ee34}
ImageSearch	0.3.1.1-signed	true	jid1-NOlwYOe3E3vApg@jetpack
NoScript	2.6.9.33rc2	true	{73a6fe31-595d-460b-a920-fcc0f8843232}
PDF Viewer	1.0.277.1-signed	true	uriloader@pdf.js
Places Maintenance	1.3.1-signed	true	places-maintenance@bonardo.net
Saved Password Editor	2.9.1-signed	true	savedpasswordeditor@daniel.dawson
Send Tab to Device	0.7.1-signed	true	jid1-mdjmA7if6lo8lA@jetpack
Shumway	0.11.400	true	shumway@research.mozilla.org
Stylish	2.0.2.1-signed	true	{46551EC9-40F0-4e47-8E18-8E5CF550CFB8}
Stylish Sync	0.1.7.1-signed	true	{0e3fc079-afbb-4a00-87e5-9486062d0f9c}
Clean Links	2.7.1-signed	false	{158d7cb3-7039-4a75-8e0b-3bd0a464edd2}
Customize about:newtab	1.1.4.1-signed	false	customizenewtab@alejandrobrizuela.com.ar
Firefox Interest Dashboard	0.9.1.1-signed	false	firefox.interest.dashboard@up.mozilla
Gecko Profiler	1.16.3	false	jid0-edalmuivkozlouyij0lpdx548bc@jetpack
Tumblr Post	1.36.1-signed	false	{99210d54-6321-41e8-bd1b-2b4c55874efb}
Ubuntu Firefox Modifications	3.0	false	ubufox@ubuntu.com
Ubuntu Online Accounts	0.5	false	online-accounts@lists.launchpad.net
Unity Desktop Integration	3.0.2	false	webapps-team@lists.launchpad.net
Unity Websites integration	2014.07.01.beta	false	{2e1445b0-2682-11e1-bfc2-0800200c9a66}

	Mike Conley (:mconley) (:⚙️)
	Comment 18 • 9 years ago

Okay Paul, I have a test for you to try:

Can you please disable NoScript and Adblock Plus, and then do a comparison between non-e10s and e10s? 

Does the time to download the page seem to match up with those disabled?

	Paul [pwd] Reporter
	Comment 19 • 9 years ago

The time with those add-ons is disabled (separate profile) is definitely better.

	Wladimir Palant
	Comment 20 • 9 years ago

As far as Adblock Plus is concerned, this is a duplicate of bug 1161798.

	Wladimir Palant
	Comment 21 • 9 years ago

Note that bug 1161798 is fixed as of Adblock Plus 2.7 - the content policy implementation is no longer relying on shims.

	Abe - QA (:Abe_LV)
	Comment 22 • 9 years ago

Cleaning up untriaged items. If it is not a proper component, please assist. Thanks

	:shell escalante
	Comment 23 • 8 years ago

closing based on comment 21.  we have bug 1192585 looking at any perf differences post 2.7.x