2055193 - Add telemetry for buffer allocator heap density

Status: RESOLVED FIXED

(Core :: JavaScript: GC, task, P3)

Description

[Jon Coppeard (:jonco)]

There have been some reports that the buffer allocator uses a lot of memory relative to the total size of allocated buffers (see bug 2051334). Before attempting to improve this we can add some telemetry to show whether we're going in the right direction.

Comment 1

[Jon Coppeard (:jonco)]

Attachment: Bug 2055193 - Add buffer allocator heap density telemetry r?#spidermonkey-reviewers

Comment 2

[Jon Coppeard (:jonco)]

Attachment: Bug 2055193 - Add buffer allocator heap size telemetry r?#spidermonkey-reviewers

Since we already have the information it would be useful to record the heap
size too.

Comment 3

[Pulsebot]

Pushed by [e-mail]:
https://github.com/mozilla-firefox/firefox/commit/750ad38e796d
https://hg.mozilla.org/integration/autoland/rev/234ced32cb26
Add buffer allocator heap density telemetry r=spidermonkey-reviewers,jandem
https://github.com/mozilla-firefox/firefox/commit/b1b589a3f438
https://hg.mozilla.org/integration/autoland/rev/4aec98b65be0
Add buffer allocator heap size telemetry r=spidermonkey-reviewers,jandem

Comment 4

[Iulian Moraru]

https://hg.mozilla.org/mozilla-central/rev/234ced32cb26
https://hg.mozilla.org/mozilla-central/rev/4aec98b65be0