Performance issues on Firefox with debugger open

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#584 1 comment 0 reactions 0 assignees View on GitHub

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Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
25/100
Issue type
Bug
Clarity
Needs clarification
Activity status
Stale
Tech stack
javascript, sqlite, wasm
Domain
databases, performance, web-dev

Research direction

Start by reproducing the reported SQL.js query timing difference with Firefox's debugger open and closed, comparing it with Chrome. Done means determining whether the debugger-related slowdown is reproducible and documenting a confirmed cause or workaround; the report names no source file or test to begin from.

Written by the indexing model from the issue text.

Description

I've been testing my app with SQL.js on Chrome and Firefox. With the debugger closed, queries perform with reasonable (<1ms) query times on both browsers. However, with the debugger open, SQL.js performs as expected on Chrome, but however, on Firefox, queries become much slower (on the order of magnitude of 100ms). This makes debugging quite painful.

Is this a known issue, and are there workarounds?

Thanks.

Dominant language
JavaScript
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