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TestPilot main-thread I/O

RESOLVED WONTFIX

Status

Mozilla Labs Graveyard
Test Pilot
RESOLVED WONTFIX
4 years ago
11 months ago

People

(Reporter: vladan, Unassigned)

Tracking

({main-thread-io})

Details

(Reporter)

Description

4 years ago
I noticed Firefox getting janky not long after startup and discovered that TestPilot's remote-experiment-loader.js was monopolizing the main thread for about 600ms. From looking at the profile alone, it looks like the time is being spent opening a Zip archive and checking file mtimes.

Profile: http://people.mozilla.com/~bgirard/cleopatra/#report=3a3d37e58eacaa8ab13c723a75a31da1b5aa474c

TestPilot version 1.2.2

We should look into moving some of the I/O off the main thread. I'm told it's not currently possible to open archives off the main thread.

Comment 1

4 years ago
btw, should pass  ".js$" into findEntries in http://mxr.mozilla.org/mozilla-central/source/browser/app/profile/extensions/testpilot@labs.mozilla.com/modules/jar-code-store.js#53
Keywords: main-thread-io
Depends on: 840108
No longer depends on: 840108
Depends on: 867445
Fixed by removing test pilot 1. Any new versions we integrate should not have this kind of problem.
Status: NEW → RESOLVED
Last Resolved: 4 years ago
Resolution: --- → WORKSFORME
Resolution: WORKSFORME → WONTFIX
(Assignee)

Updated

11 months ago
Product: Mozilla Labs → Mozilla Labs Graveyard
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