问题描述
在Windows 10的Firefox 66上，我在开发者工具的网络标签中看到了性能分析工具.
On Firefox 66 on Windows 10, I see the performance analysis tool in the Network tab of the Developer Tools.
我点击秒表图标开始对请求进行性能分析.
I click the stop watch icon to start performance analysis for the requests.
但是我看到饼图显示为灰色，并且无论我等待多长时间，始终处于正在加载状态.
But I see the pie charts greyed out and in the loading state always, no matter how long I wait.
为什么不显示性能指标?我必须打开一些设置吗?
Why aren't they showing the performance metrics? Do I have to turn some setting on?
推荐答案
我可以在全新的Firefox 66配置文件中重现此问题.在错误跟踪器中进行搜索后，我发现了错误1430698 .
I can reproduce this problem on a fresh Firefox 66 profile. Searching in the bug tracker brought me to bug 1430698.
根据那里的信息，通过 about:config network.http.rcwn.enabled设置为false >解决了问题，它确实为我工作.话虽如此，我仍不清楚此选项的实际作用，因此使用此方法后果自负.
According to the info there, Setting network.http.rcwn.enabled to false via about:config solves the problem, and it did work for me. Having said that, it is unclear to me what this option actually does, so use it at your own risk.
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