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WHEN FACEBOOK RELEASES an update for its apps, it doesn’t include notes on what has changed.
Its latest update, which arrived last night, is one to note as it solves a recent problem with the app: unnecessary battery drain.
Reports about Facebook’s app consuming large amounts of battery life emerged recently, with users noting long periods of background activity even when settings like background refresh were disabled.
One of Facebook’s engineers Ari Grant confirmed the app was responsible for a faster than usual battery drain, but said it wasn’t down to location services.
The problem came from two fronts. The first was what Grant called CPU spin that he described was “like a child in a car asking “Are we there yet? Are we there yet? Are we there yet? with the question not resulting in any progress… [causing] our app to use more battery than intended”.
The other issue was how it managed audio playback. The app would act as if audio was still playing silently but in the background, meaning it would continue to drain battery life even when the app wasn’t doing anything.
If you leave the Facebook app after watching a video, the audio session sometimes stays open as if the app was playing audio silently. This is similar to when you close a music app and want to keep listening to the music while you do other things, except in this case it was unintentional and nothing kept playing.
The app isn’t actually doing anything while awake in the background, but it does use more battery simply by being awake. Our fixes will solve this audio issue and remove background audio completely.
He did state that the battery problems had nothing to do with any of the app’s location features, and downloading the latest version should show improvements in battery usage.
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I prefer mars to snickers. The past history of either is not really that important
A combination of factors Val. 4 billion years ago Mars was a much warmer place than today, as the planet had not cooled sufficiently since its formation. The interior of the planet at that time was similar to Earth’s today, i.e. a thin crust floating on a molten interior giving rise to volcanoes such as at Olympus Mons. The interior, as on Earth, is made primarily of iron, and in such instances where the core is molten, this iron creates a magnetic field (such as can be seen on Earth). The magnetic field protects the planet from solar radiation. This radiation breaks H2O molecules down into their respective parts – Oxygen and Hydrogen. With the cooling of the planet’s interior the magnetic field breaks down allowing the solar radiation in which then breaks down the H2O. The hydrogen is too light to remain on Mars’ surface (bear in mind Mars has only1/3 the gravity of Earth) and floats to the top of the atmosphere where, now that the magnetic field is gone, solar winds are allowed to tear the hydrogen away from the planet and carry it into space and ionising other particles which are also stripped away. As the atmosphere thins the planet cools even further. Any water that remains becomes locked in the rocks, any oxygen which remains ends up bound in CO2. The process is a relatively fast one. See this article from NASA on the process.
great comment
Global warming ;)
Deadly bit of news. Little bit disappointed by the artists image though. Surely Mars then wouldn’t have looked the same as now i.e. red and dusty, if it had an ocean would it? Surely it would have looked a little bit closer to our own planet. Raises serious questions about what happened there for an entire ocean to dry up also.
That would really depend on whether or not the ocean was there long enough for life to evolve. Our planet only looks like it does because of the plant life, if you look at the deserts you get an idea of how it would’ve looked if life didn’t happen. The only difference I’d put into the artists impression is a bit of cloud cover, maybe.
The view of the sky from the surface of Mars is blue, like Earth. NASA admitted that they touch those shots “for effect”.
the sky is only blue at sunrise and sunset
How I wish the human race could solve our problems here and explore inner and outer space together. The trillions spent on war could feed and clothe us all and used to expand our understanding of our home. The universe.
It will never happen, but still.
Who cares we should be looking after our own planet
Alan, we may need a new planet. Mars may become important in the same way as the USA was. Who says we must only live on one planet?
The fact that there was once water on Mars is old news. The mainstream news is only catching on now?
Read the first 2 lines of the article please.
It says that in the article, this is not news of water on the planet, it is news of the remnants of a particular ocean.
Ah crap, apologies folks. I read the article but the first couple of lines must have indeed escaped my attention! Whoops.
have your say