2014年7月2日星期三

Examining Project Volta: We position machine L through our battery test

Examining Project Volta: We position machine L through our battery test

Representing all machine statement, Google likes to hold a "Project" with the aim of picks an area of weakness and focuses on tuning the entirety OS to sort out it. In the sphere of Jelly Bean we had Project Butter, a strenuous effort to appoint Android's UI animations run by 60fps. In the sphere of KitKat near was Project Svelte, which aimed to find the OS running on lone 512MB of RAM. At this moment in the sphere of machine L we hold "Project Volta," an attempt to boost the battery life of machine policy. Like the projects with the aim of came ahead of it, Volta is a wide-ranging effort with the aim of touches many changed parts of the OS.

Google did more or less trying and found with the aim of waking a device up representing lone trice burns two minutes of be there for epoch. This isn't specifically spiraling the screen on—it in addition income an app waking the workstation and modem to check representing updates. To decline down on this battery burn, machine L has a different "JobScheduler" API with the aim of allows the OS to batch up unimportant app requirements like folder cleanup and log uploading. Developers can in addition ask for with the aim of organization functions be located delayed until the device is plugged in the sphere of. Expand, the OS yearn for not wake the device up representing a set of connections task as near is rebuff set of connections connectivity.

Google in addition made an enhanced battery stat trailer called "Battery Historian." The tool added a ton of different power-tracking capabilities and permissible the company to visualize all with the aim of data in the sphere of a pretty chart. Better analytics gave Google additional insight into what did you say? Was using all with the aim of power, which permissible it to modify things all in excess of the OS representing better battery life.

There's the switch from Dalvik to knack, a earlier virtual structure with the aim of compiles apps in the past as a replacement for of each epoch they are run. Knack is in addition in the main earlier and additional efficient than Dalvik, which income a lesser amount of epoch spent handing out and a lesser amount of power running.

With the aim of all sounds horrible, but does Project Volta in point of fact production? We unambiguous to locate banned by running our study battery test. Specifically like in the sphere of our reviews, we were to the same degree systematic to the same degree on the cards. We did the test on a single device to remove variances in the sphere of battery, which doomed flashing to 4.4.4, signing in the sphere of, updating apps, charging up, running the test, and subsequently flashing the same device to the L preview. Our battery test keeps the screen on and without human intervention masses webpages in excess of Wi-Fi each 15 seconds until the battery dies. Representing all run, the screen brightness was deposit to 200 cd/m2, to the same degree verified by a colorimeter, and representing runniness, we averaged two runs all. The results?

Thirty-six percent additional battery life. Installing the L preview on our Nexus 5 gave us two add-on hours of runtime. These tests were made on a beat up, daily-driver phone, so the final records aren't necessarily indicative of what did you say? The L preview may well realize on a different device. It's the difference with the aim of matters.

Machine L in addition has a "battery saver" highlight with the aim of lowers the device performance and cuts the background data and screen brightness as the device hits 15-percent battery, but we disabled this highlight representing our tests. We like to hold our policy by stuffed power, and we don't require a hyper-aggressive phone-crippling highlight messing with our results. Presumably, you may well addition even additional runtime by spiraling the battery saver on. This test is additional on the subject of the broad-spectrum under-the-hood improvements with the aim of are running all the epoch.

This is specifically an premature look by machine L's battery life. The current statement is a "developer preview," but Google has already been able to appoint a meaningful difference in the sphere of the runtime of L policy. More or less of the different power-saving facial appearance, like the appointment scheduler, require app support, so there's probably space to recover not lone in the sphere of the OS but in the sphere of Google's bundled apps, too. By the epoch the final version of L comes banned, things may well be located even better. Google beyond doubt looks to be located on the totally track.


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