1506237 - Delay search-one-offs connectedCallback

Status: RESOLVED FIXED

(Firefox :: Search, enhancement)

Description

[Brian Grinstead [:bgrins]]

I'm seeing this show up in profiles: https://searchfox.org/mozilla-central/rev/a3894a4dcfb5d42f2e6eee6cb9faf7141879ef1a/browser/components/search/content/search-one-offs.js#185. It should be delayed until after DOMContentLoaded and we should probably share the fragment too, since it appears we create more than one of these.

Comment 1

[Dão Gottwald [::dao]]

Hmm, we should probably create these elements on the fly when opening the parent popups.

Comment 2

[Brian Grinstead [:bgrins]]

Using: `./mach talos-test -a tpaint --geckoProfile`

Without patches: https://perfht.ml/2zG1U0D. 9ms and two separate groups of work.
With patches: https://perfht.ml/2zH6ETF. 4ms and one group of work.

Comment 3

[Brian Grinstead [:bgrins]]

Attachment: Bug 1506237 - Delay search-one-offs connectedCallback;r=dao

It's best practice in chrome to not run code in the connectedCallback during parse
(see the comment above MozXULElement.delayConnectedCallback).

Comment 4

[Brian Grinstead [:bgrins]]

Attachment: Bug 1506237 - Share document fragment for search-one-offs between instances;r=dao

This avoids the cost to parse the markup for subsequent connections.

Comment 5

[Brian Grinstead [:bgrins]]

(In reply to Dão Gottwald [::dao] from comment #1)
> Hmm, we should probably create these elements on the fly when opening the
> parent popups.

Yeah, that would be good as well since there's quite a bit of work to do upon construction / connection. I'm guessing if we go away from a Custom Element and towards a plain JS class that would solve this issue.

Comment 6

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/65a4195373c8
Delay search-one-offs connectedCallback;r=dao
https://hg.mozilla.org/integration/autoland/rev/9edb93a822c3
Share document fragment for search-one-offs between instances;r=dao

Comment 7

[Cosmin Sabou [:CosminS]]

https://hg.mozilla.org/mozilla-central/rev/65a4195373c8
https://hg.mozilla.org/mozilla-central/rev/9edb93a822c3