Can anyone elaborate or provide a link to android memory management. I am confused about Android virtual memory scheme. How is paging done in Android? Without a hard disk, how do they do it? Do they have caching?
Hi all,
I am interested in understanding how android handles swap memory. Specially at the kernel level. What is the function call(at the kernel) that dose the swap in/out of the applications in memory?
Hi
How would you share memory between two processors, one which runs android and the other a DSP without any OS (BSP)?
Should I allocate memory to a dummy process? How could I receive the physical addres to pass to the DSP?
Thanks
I was just wondering what exactly were 4.4's minimum system requirements. Is it possible that a device with 512MB RAM can really run it or is it just a gimmick?
Ya hope so!!!!
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adarshsosale said:
I was just wondering what exactly were 4.4's minimum system requirements. Is it possible that a device with 512MB RAM can really run it or is it just a gimmick?
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I'm not sure that a lot of that technical data is released yet. If you are referring to older, legacy devices, then it's likely not possible to get those running KitKat, simply because the various drivers and hardware need to be compatible with one another. This was a major issue with older devices trying to run ICS, which needed hacks to run properly.
Yes Android 4.4 was developed to support low-end devices.
look at:
hxxp://gadgets.ndtv.com/mobiles/news/android-44-kitkat-supports-devices-running-just-512mb-of-ram-440357
Well, if you look after Nexus S' forums, you'll see a lot of people working to port the Nexus 5's ROM or even compiling the KitKat sources to their devices. So, yes, it is possible using 512mb of RAM. The problems, instead, are all related to drivers' compatibilities.
i heard that its going to be supported for lower end devices, such as your 512mb of RAM
Android 4.4 is designed to run fast, smooth, and responsively on a much broader range of devices than ever before — including on millions of entry-level devices around the world that have as little as 512MB RAM.
KitKat streamlines every major component to reduce memory use and introduces new APIs and tools to help you create innovative, responsive, memory-efficient applications.
OEMs building the next generation of Android devices can take advantage of targeted recommendations and options to run Android 4.4 efficiently, even on low-memory devices. Dalvik JIT code cache tuning, kernel samepage merging (KSM), swap to zRAM, and other optimizations help manage memory. New configuration options let OEMs tune out-of-memory levels for processes, set graphics cache sizes, control memory reclaim, and more.
In Android itself, changes across the system improve memory management and reduce memory footprint. Core system processes are trimmed to use less heap, and they now more aggressively protect system memory from apps consuming large amounts of RAM. When multiple services start at once — such as when network connectivity changes — Android now launches the services serially, in small groups, to avoid peak memory demands.
This thread may be old. But yes you can run KitKat on 512 MB RAM devices. I'm running KitKat on such a device. But I have to mention that it's also possible to run Android versions lower than 4.4 on low ram devices.
I wan't to buy a budget phone and have not any experience on installing Linux (distro) on android. Can you please tell me what is minimum amount of RAM required to run Linux (distro) on Android?