T420 mSata Win7 Hibernate slower than reboot

System configuration:
T420, Renice mSata 120G as OS drive, Win7 Home

Boot time is about 20sec.
Reboot time is 30sec.
Put OS to hibernate is 5-10sec
However, resuming windows (boot up with last time shutdown as hibernation) is 30sec.

This is unacceptable as fresh boot 20sec is faster than resuming 30sec. In Windows XP, my experience with several laptops were resuming faster than fresh boot.

I prefer to use hibernate than shutdown just because next time after boot up, I don't have to open each of daily use programs and restore the daily use state.

Does the community have any thoughts about why Windows 7 resuming (from hibernate) is slower? And how to improve that? Please advise, thanks.

 

Don't hibernate? I don't ever hibernate my stuff. Just Sleep when its off for a shorter amount of time. Just turn it off when not in use for a long period of time.

 

This is my point: "I prefer to use hibernate than shutdown just because next time after boot up, I don't have to open each of daily use programs and restore the daily use state."

I am just used to sleep/hibernate behavior since there's no need to start over all applications every day. I don't bring my laptop to work, so it's not feasible to put the laptop in sleep since it's just waste of power.

 

A laptop draws maybe 1W at most when in sleep mode. It is probably far closer to 0.1W ~ 0.3W. In fact, I believe a lot of modern laptops (including Lenovo ThinkPads) drain like 0.1W of power even when they are off, so you are not saving on much. Anyways, I've never really liked using the hibernate function as the system feels slower and slower the more I hibernate it without restarting. But, make sure you are hibernating to the drive that you want to. If you have another HDD in there, it could be hibernating to the HDD, which would make it slower.

 

Bear in mind a hibernate dumps the RAM to disk. The more RAM you have, the larger the hibernation file will be, and the longer it'll take to write it. An old XP machine with 512mb of RAM might well hibernate faster than a T420 with 8gb.

It's also considered a bad idea to hibernate with an SSD. They do have limited writes and hibernating with a lot of RAM incurs quite a lot of writes.

 

@wkearney99, good point on dumping 8gb RAM to disk may take more time than 512mb. My hiberfil.sys is located on SSD, so I shouldn't keep hibernating .

@kirayamato26, it's good to know that sleep mode consumes slightly more than powered off. Is there any way to measure the power consumption myself ?

I thought in sleep mode, the laptop keeps charging RAM and motherboard (anything else?), which could constantly consuming a lot of battery/power. Looks like modern power management IC has improved a lot. Is there any reference for this? Can you advise? thanks.

 

The hassle is there's absolutely no way to reconfigure hibernation to use anything other than the OS drive. No option or hack to make it use a different drive. None. The problem being there's not enough of the OS running at that point to be able to mount other drives. It's a serious downside to Windows on an SSD.

So hibernating to the SSD wastes A LOT of it's useful write life.

 

Don't use hibernation when on AC power, set it to "Never" in Power Manager, and something like 30 minutes when on battery.

 

interesting... i tend to have the same problem with my HDD too...