Open Bug 1600092 Opened 3 years ago Updated 5 months ago
Showing network errors is extremely slow (6+s of parent process jank)
(DevTools :: Netmonitor, defect, P3)
(Reporter: florian, Unassigned)
(Blocks 2 open bugs)
3.90 MB, application/octet-stream
Someone just told me he can't use Firefox for webdevelopment because devtools are slow. He captured this profile for me: https://perfht.ml/34vOC51
Most of the time is in resource://devtools/client/shared/components/tree/TreeView.js
3 years ago
Thanks for the report Florian!
Priority: -- → P3
3 years ago
Quickly tested with the HAR in attachment here.
- open netmonitor
- import har
- select error request in the list
- select "Response" side panel
In Firefox 71, this is almost instant on my machine, while on current Release (FF70), it can take up to 2 seconds and even beach ball. So it seems we have somehow fixed part of this issue recently, but it would be nice to know why/how.
In both versions, the response tab shows only "Preview" and "Payload" sections.
5 months ago
Severity: normal → S3
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