Why is Firefox HAR data page timings for onContentLoad and onLoad equal to -1
I'm testing the network performance of my website and I need to export a few samples of it. From the Firefox Dev Tools, I can "Save All As HAR", but viewing the contents the page timings is wrong.
Here is a sample of the HAR file and I am using Firefox 54.0.1:
"pages": [
{
"startedDateTime": "2017-07-22T14:47:49.001+01:00",
"id": "page_6",
"title": "Mid-Latency",
"pageTimings": {
"onContentLoad": -1,
"onLoad": -1
}
}
],
1. Why is the pageTimings = -1 and not (for example) 500ms? 2. Where is the waterfall data of each resources and timings?
Solution choisie
It seems to be a bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1174091
An alternative solution of getting the onLoad I've found, is to get the difference between the startedDateTime and add the last entry "time".
Not sure why this is the case, but I guess it will have to do. Can I get this closed?
Lire cette réponse dans son contexte 👍 0Toutes les réponses (3)
Beyond most of us here. Have you tried other sites : https://confluence.atlassian.com/kb/generating-har-files-and-analysing-web-requests-720420612.html
Solution choisie
It seems to be a bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1174091
An alternative solution of getting the onLoad I've found, is to get the difference between the startedDateTime and add the last entry "time".
Not sure why this is the case, but I guess it will have to do. Can I get this closed?
Yes you can. Mark your reply as solved/helpful or..
I am glad to hear that your problem has been resolved. If you haven't already, please select the answer that solves the problem. This will help other users with similar problems find the solution more easily. Thank you for contacting Mozilla Support.