What is the new technology "logoff + hibernation" that halves the startup time of "Windows 8"?

Outflow "Windows 8" internal secret materialIt is written that various interesting things are written, but what I want to pay attention to in terms of technology is shortening startup time as well. Especially even though the name is not clearly decided yet, the new starting method "Logoff + Hibernation"Is a technology that can be quite expected, and it is a fairly revolutionary technology that will speed up the startup speed by a factor of two, up to the present, until successfully running.

Details are as below.
Especially focused on this Windows 8 power supply relationship.


Firstly from "efficiency". Power saving system such as power control of the kernel, kernel scheduler, power consumption control when the CPU is idle, completely turning off the power supply when idling the PCI device by "D3 cold", and so on.


The second is about the transition of power on and off. Improved hibernation performance speed by I / O improvement, new state of logoff + hibernation, increased speed of reading BIOS files, detection of laptop connected to AC power by new intelligent RTC alarm, etc. .


The third is "measurement", which is an analysis of the idle state and a more expanded power configuration.


The fourth is "resilience", an extension of the function of putting the CPU in the idle state when the user is not operating, and the ability to read / write the hard disk when the hard disk rotation becomes less when the user is not operating anything It has become a function to prevent, for example.


This startup speed improvement is further focused on Windows 8. The PC with Windows 8 starts up quickly, and in some cases it is supposed to be close to the instantaneous start without being kept waiting for a long time. To that end, we are also planning to have a quick launch from the zero watt state, a momentary sleep on the mobile PC, a variety of power states, as well as performance tracking, analysis and custom options for enthusiastic users.


Therefore, as a fast start-up strategy of Windows 8, usability like home appliances, standby and sleep modes that always wait due to power saving, review of traditional startup sequence, clever cache system, prefetch of boot layout, cache of ReadyBoost on Windows 8 , To improve on / off user experience, provide start-up speed measurement tool and provide improvement tools.


As a further consideration for shortening startup time and speedup, it seems that there are such things as continuing research on startup speed improvement, improving BIOS and drivers, logoff and hibernation.


About this combination of logoff and hibernation, appearance and ease of use are similar to shutdown and activation of Windows 7, caching core system parts such as drivers, device trees, and system services by hibernation, updating the user's desktop, executing it after startup, It is said that the startup speed will be half the time of the current cold boot.


As this new "logoff + hibernation" (name undecided) becomes the default on / off setting of Windows 8 and it is said how to explain this to the user, "shut down" "turn off" "power down" or other name , How to make users experience like Windows 7 startup or hibernation, whether to install updates, change hardware, and choose OS when launching, balance with Wake On LAN functions, etc. There are still many problems I am doing.


This graph is a new starting method in Windows 8 "logoff + hibernation (temporary)", the above graph is the traditional startup sequence up to now, the graph below is the Windows 8 new method. Reading power on / hibernation file - Driver Init (S4) is in order.


· Continued
Reinstall Windows only without erasing all files · settings · applications etc Windows 8 new function "reset"