Closed Bug 1492360 Opened 4 years ago Closed 4 years ago
High CPU usage when open firefox before chrome/chromium
User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:63.0) Gecko/20100101 Firefox/63.0 Build ID: 20180917143811 Steps to reproduce: 1. Open Firefox (v63) 2. Open Chrome/Chromium (v69) Change the order will not happen Here is the video: https://youtu.be/xZYJmMQRWzE Here is the perf record (clean profile): https://perfht.ml/2OBfZmf Here is another perf record (default profile): https://perfht.ml/2NScXNn Environment: OS: Linux Mint 18.3 Sylvia x86_64 Kernel: 4.15.0-33-generic $ firefox --version Mozilla Firefox 63.0 $ google-chrome --version Google Chrome 69.0.3497.100 Actual results: VERY HIGH CPU usage 10~30 seconds Expected results: Not so long CPU usage
Hello Mike, could you please look into the performance report here? Thanks!
Product: Firefox → Core
Sorry for the delay. From this profile (https://perfht.ml/2EnGkUh), it looks like we're burning a bunch of CPU asking for the OS for font information. ni?ing jfkthame who might know more.
Flags: needinfo?(mconley) → needinfo?(jfkthame)
This looks like a dupe of bug 1495900; updating the system to fontconfig 2.13 would probably help considerably. It's not clear to me that there's much we can directly do about this, given that the update seems to be triggered from inside GTK...
Status: UNCONFIRMED → RESOLVED
Closed: 4 years ago
Resolution: --- → DUPLICATE
Duplicate of bug: 1495900
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