Secrets of Win8 switching machine speed improvement

After Win8 is installed, many people experience the amazing speed of switch-on, especially the boot speed. Compared with Win7, it improves not only by half past one. On some super-core and SSD-equipped machines, the switch-on speed can be within several seconds. For example, in Surface Pro, the boot speed of the tested system is 2 seconds. It takes only 6 seconds from start to automatic logon to Start Screen.

 

What technologies have actually improved the Win8 switch speed? To sum it up in the simplest sentence, it should be "system session sleep" or, more simply, "hybrid shutdown ".

 

In the past Windows OS, the typical shutdown sequence was:

1. Click "Shut Down ".

2. Run the shutdown information of an application on Windows broadcast so that the application can save data and set up. An application can also require additional time to end its current work.

3. Windows disables user sessions for each login user.

4. Windows sends a shutdown message to the service, notifying that shutdown has started, and then shutting down the service. If the service does not respond, the system will disable it.

5. Windows broadcasts information to the device, indicating that the device is disabled.

6. Windows disables a system session, also known as "session 0 ").

7. Refresh the pending data on the Windows drive to ensure full storage.

8. Windows sends a signal to the system through the ACPI interface to power off the computer.

 

Looking at the typical shutdown steps above, do you also think of the UI performance on the screen corresponding to some steps ~

 

Next, let's take a look at the main steps of hybrid shutdown in Windows 8:

1. Click "Shut Down ".

2. Run the shutdown information of an application on Windows broadcast so that the application can save data and set up. Applications can also require additional time to end their current work.

3. Windows disables user sessions for each login user.

4. System session sleep and power down.

 

It can be seen that in Windows 8, only user sessions are closed, and computers are not completely shut down as before. In this case, Windows no longer waits for and ends the system service or closes session 0, but puts it into sleep. This method of disabling user sessions + sleep system services and system sessions is called "hybrid shutdown", which is easy to understand.

 

In other words, when cleaning, you need to assemble a professional mop before cleaning. Now, you can pick up the mop and start cleaning directly, because after the last cleaning, you did not remove the mop tool as before.

 

The structure of power-on is the inverse process of power-off. Therefore, with hybrid power-off, power-on is naturally faster. However, apart from the RAID card, the hard disk generally reads faster than the write speed. When the hard disk is shut down, the system will notify you and wait for the application to exit, the boot process is faster than the shutdown process.