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I'm a Windows 8 user, and I've got 2GB RAM. I noticed the following phenomenon:
- When hibernate is disabled, the
pagefile.sys
will be the same
size as my RAM. - But when hibernate is enabled, the size of
pagefile.sys
will be only about 25% of RAM andhiberfil.sys
75%.
It's easy to notice that the sizes of pagefile.sys
and hiberfil.sys
add up to the size of RAM, whether hibernation is enabled or disabled. We know that the hiberfil.sys
is used for the hybrid boot of windows 8. In other words, it's only used for boot process and becomes useless after the system booted. My guess is that windows 8 just reuses hiberfil.sys
as another part of pagefile.sys
when the system is already on. I'm looking for an authoritative answer on this.
So, why does the size of pagefile.sys
decrease to only 25% of the RAM when hibernation is on?
This article just refers to the phenomenon as "an interesting thing". It still doesn't explain why the system needs a pagefile of the same size of RAM when hibernation is off while needs only a pagefile of just 25% RAM when the hibernation is on. The pagefile.sys is used as an extension of RAM when the RAM is exhausted in both scenario. So what's the difference? – ltux – 2013-03-25T19:25:18.293
I think that depends on the point of view and that it does explain it - from the text above, the hiberfil will contain your drivers and kernel - thus the paging file can be smaller – TomEus – 2013-03-25T21:13:55.423
I'm sorry, but I can't make sense out of this. The statements This is because the hiberfil.sys contains the Windows 8 kernel and device drivers. and The hiberfil.sys is only used for the boot process. seem contradictory to me. – Dennis – 2013-03-25T21:26:00.137