Closed Bug 948528 Opened 7 years ago Closed 5 years ago
[meta] Spikes in power usage during idle
This bug tracks the work related to the energy drain of Firefox when idle.
The energy drain of FF 25.0.1 during idle on Windows, Linux and OSX are very similar in my tests: - the donate gif in about:home is draining up to 33% more energy wrt. the idle machine - without the donate gif FF does not seem to drain any additional energy
Even though Intel Power Gadget doesn't seem to show any statistically significant drain during idle on my machine, there are some wakeups triggered due to mainly: - bug 951713 - bug 951671 - Watchdog - nsIdleService - gfxFontCache::WordCacheExpirationTimerCallback (disabled in release) were the last three are required but have a low frequency. I suspect that the power drain is difficult to spot when profiling "short" intervals (1-10min) whereas the effect could be visible over much longer intervals.
Correction: the wakeups triggered during idle by gfxFontCache and Watchdog could be avoided.
The wakeups triggered by Watchdog are caused by Bug 958552.
This meta-bug now has only one blocker, and it hasn't seen any significant activity since early 2014. I think it's served its purpose and can be closed.
Status: NEW → RESOLVED
Closed: 5 years ago
Resolution: --- → WORKSFORME
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