SSD Boost

**IT NEEDS ROOT**

This is a work in progress project which has the goal to speed performance and extend endurance of smartphone internal flash memory.

Smartphone internal storage uses solid state technology SSD/emmc. Counterpart to lower access time, and less latency of SSD is that its performance may degrade over time: writing after writing, the memory cells show a measurable drop in performance, and will continue degrading throughout the life.

'SSD Boost' minimizes writings on your SSD, increasing speed and extending life of your storage: your smartphone will thank you.

Though the main goal of the app is the optimization of flash memory, many users have also experienced (read the reviews) a better responsiveness in the startup of the apps, a longer battery endurance and a decreased temperature of the phone.

Probably because 'SSD Boost' app is a workaround to some insane process running in the background, that keeps writing to disc. This has been experienced from Android ICS version to Pie (both stock and custom).

It needs a rooted phone.

Be careful, if you have got one of the following models:

- Samsung Galaxy R.

- Samsung Galaxy SII.

- Samsung Galaxy Note.

- Samsung Galaxy Nexus.

- Samsung Epic 4G Touch.

before installing, check presence of Brickbug (a bug on eMMC chip fw): https://play.google.com/store/apps/details?id=net.vinagre.android.emmc_check

Changelog:

1.0.7

- improved root check method

1.0.2

- added TRIM command

What does TRIM for ssd/nand performance.

Unlike HDD, SSD cannot overwrite data because only a transition from 0 to 1 is possible, so before overwriting the data has to erase the whole page to 0 then program the bits.

Erasing takes longer then writing data, so after you used the device for a while it will have to erase the pages before writing them and cripple performance.

It would be so much better if controller would erase the blocks while idle so you have them ready when you need to write. Unfortunately this is not possible as controller has no knowledge of file system so it does not know what blocks are used and with are not.

TRIM command, when supported by the SSD/NAND, allows operating system to send a list of blocks to controller to erase when is idle.

Android 4.3+ supports trim natively, it means that operating system after deleting a file will sends a trim command to nand controller notifying witch blocks the file used, the controller will erase them when idle so it can write fast without erasing next time.

But users have no control over this process and Android doesn't trim the storage for a very long time.

'SSD Boost' helps you to run trim on your device manually if you feel it has become laggy and anyway it does trim for you on every reboot.

It overtakes LagFix (fstrim) limitation, supporting Android 5 Lollipop.

1.0.1

- added NOATIME, NOADIRATIME support

Android maintains file system metadata that records when each file was last accessed. This timestamp is known as atime and atime comes with a performance penalty – every read operation on a filesystem generates a write operation.

Updating the atime every time a file is read causes a lot of usually-unnecessary IO, slowing everything down.

'SSD Boost' disables the tracking of atime, remounting filesystems with the noatime/noadiratime options.

Note:

Some users criticize the name of the app, 'SSD Boost'.

Actually, the word 'boost' is misleading: the app, strictly speaking, doesn't speed up transfer rate, but works around limitations on ssd technology and linux kernel.

Instead, concerning the use of word 'SSD': the most common use is 'flash memory', but when a flash memory implements an interface to some bus, this device constitutes a drive in itself, then it can be properly called SSD.

Every flash memory in every smartphone implements an interface to a bus, so you can use both words mutually.

**需要根据**

这是一个正在进行中的项目，其目标是加速智能手机内部闪存的性能并延长其耐用性。

智能手机内部存储使用固态技术SSD / emmc。对应于降低访问时间和减少SSD的延迟，其性能可能随着时间的推移而降低：写入后写入，存储器单元显示出可测量的性能下降，并且将在整个生命周期中继续降级。

'SSD Boost'可最大限度地减少SSD上的文字，提高速度并延长存储寿命：您的智能手机会感谢您。

虽然该应用程序的主要目标是优化闪存，但许多用户也经历过（阅读评论）在应用程序启动时更好的响应性，更长的电池续航能力和降低的手机温度。

可能是因为“SSD Boost”应用程序是在后台运行的一些疯狂进程的解决方法，它一直在写入光盘。从Android ICS版本到Pie（包括库存和自定义）都经历过这种情况。

它需要一个有根的手机。

如果您有以下型号之一，请注意：

- 三星Galaxy R.

- 三星Galaxy SII。

- 三星Galaxy Note。

- 三星Galaxy Nexus。

- 三星Epic 4G Touch。

在安装之前，检查Brickbug的存在（eMMC芯片上的错误）： https： //play.google.com/store/apps/details?id=net.vinagre.android.emmc_check

更新日志：

1.0.7 的

- 改进的根检查方法

1.0.2 的

- 添加了TRIM命令

TRIM对ssd / nand性能的影响是什么？

与HDD不同，SSD不能覆盖数据，因为只有从0到1的转换是可能的，因此在覆盖数据之前必须将整个页面擦除为0然后对这些位进行编程。

擦除所需的时间比写入数据要长，因此在您使用设备一段时间后，它必须在写入之前擦除页面并削弱性能。

如果控制器在空闲时擦除块会更好，所以当你需要写时它们就准备就绪了。不幸的是，这是不可能的，因为控制器不知道文件系统，所以它不知道使用哪些块而不是。

当SSD / NAND支持时，TRIM命令允许操作系统向控制器发送一个块列表，以便在空闲时擦除。

Android 4.3+本身支持修剪，这意味着删除文件后操作系统将向nand控制器发送修剪命令，通知阻止使用的文件，控制器将在空闲时擦除它们，这样它可以快速写入而不会在下次擦除。

但是用户无法控制这个过程，Android也不会长时间削减存储空间。

“SSD Boost”可以帮助您手动修剪设备，如果您感觉它已经变得迟钝，无论如何它会在每次重启时为您修剪。

它超越了LagFix（fstrim）限制，支持Android 5 Lollipop。

1.0.1 的

- 增加了NOATIME，NOADIRATIME支持

Android维护文件系统元数据，记录上次访问每个文件的时间。此时间戳称为atime，atime带来性能损失 - 文件系统上的每个读取操作都会生成写入操作。

每次读取文件时更新atime会导致大量通常不必要的IO，从而减慢所有内容的速度。

'SSD Boost'禁用atime跟踪，使用noatime / noadiratime选项重新安装文件系统。

注意：

一些用户批评该应用程序的名称，“SSD Boost”。

实际上，“提升”一词具有误导性：严格来说，应用程序不会加快传输速度，但可以解决ssd技术和Linux内核的限制问题。

相反，关于“SSD”这个词的使用：最常见的用途是“闪存”，但是当闪存实现某个总线的接口时，该设备本身就构成了一个驱动器，然后就可以称之为SSD。

每个智能手机中的每个闪存都实现了总线接口，因此您可以相互使用这两个词。