| Subject: Time to wake up from hibernate mode |
| Group: microsoft.public.windows.tabletpc |
| Date: 8/12/2008 10:46:43 AM |
| From: "Robert M. Lincoln" [Email Address Protection] |
Do some tablets wake up faster from Hibernate Mode than other tablets? Does the amount of memory speed up or slow down wake up time? Are there ways to shorten the wakeup time when in Hibernate Mode? Thanks |
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| Subject: Re: Time to wake up from hibernate mode |
| Group: microsoft.public.windows.tabletpc |
| Date: 8/12/2008 12:45:38 PM |
| From: "Beverly Howard [Ms-MVP/MobileDev]" [Email Address Protection] |
Since hibernate is restoration of memory from the hard drive, I would assume the factors would be memory amount, hard drive speed and cpu speed. Even if you are not using all of the available memory, think hibernation is an "image" of all available memory. >> shorten? << Not that I aware of. Beverly Howard [MS MVP-Mobile Devices] |
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| Subject: Re: Time to wake up from hibernate mode |
| Group: microsoft.public.windows.tabletpc |
| Date: 8/12/2008 1:20:25 PM |
| From: "Rainald Taesler" [Email Address Protection] |
Robert M. Lincoln wrote: > Do some tablets wake up faster from Hibernate Mode than other > tablets? YES! It depends on their overall speed factors - CPU, memory, system board etc., but mainly HDD-speed. Hibernation means that all of what is held in the RAM is written to the HDD (c:\hiberfil.sys) and on wake-up is read from there. So the decisive factor is the speed of reading-in the content of the hibernation-file from the HDD on wake-up. > Does the amount of memory speed up or slow down wake up time? In general: As every bit of what is held in the RAM on firing hibernation is written to the HDD and read-in on wake-up, this naturally means that the bigger the RAM, the bigger the hibernation file (just the size of the file on your machine - it's almost the same size as your RAM). The bigger the file, the longer the time needed for writing the file as well as reading it. But this only the basic principle. This was quite important in the days of Win 9x. Sending the machine into hibernation and waking it up was dramatically slowed down if the machine had a huge RAM. I remember this only too well as I had been working with hibernation since it was first introduced by COMPAQ in the late 1980s. In the end with Win 98 and big memory it took almost as long to wakeup the machine as it would take for a full boot. Still I kept using hibernation because of its main advantage of keeping all applications open. However, things then dramatically changed with Win2k and again with XP. MS was successful in optimizing the hibernation techniques and contrary to the previously used techniques compression was used and empty sectors were left out. Therefore the Still: the amount of RAM installed is responsible for the size of the hibernation file. The more RAM. the bigger the file. > Are there ways to shorten the wakeup time when in Hibernate Mode? NO. Rainald |
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| Subject: Re: Time to wake up from hibernate mode |
| Group: microsoft.public.windows.tabletpc |
| Date: 8/12/2008 1:54:17 PM |
| From: "Robert M. Lincoln" [Email Address Protection] |
Does anybody have any experience with wake-up time using solid state hard disks (i.e., "hard disks" that are completely memory chips)? Is the wake-up time really fast? |
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| Subject: Re: Time to wake up from hibernate mode |
| Group: microsoft.public.windows.tabletpc |
| Date: 8/12/2008 2:08:07 PM |
| From: "Beverly Howard [Ms-MVP/MobileDev]" [Email Address Protection] |
Step one would be to get a computer with a solid state boot drive... There are some other factors at play here, notably the fact that recovery from hibernation is essentially a "boot" operation and the boot process is very limited as to where it is going to look for the ram image. Historically this has been a disk partition which is dedicated to storing ram, but don't know the specifics on what it has evolved to in the current incarnations of windows. In any case, I would guess that getting the computer to "hibernate into" a different disk hardware location plus getting the wakeup to restore from that non standard location would not be a trivial task. At this point, suggest google and other forums more likely to have tech details on this as it is not a tablet specific item... although it is probably more important on the tablets than other machines... ....keep us posted. Beverly Howard [MS MVP-Mobile Devices] |
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| Subject: Re: Time to wake up from hibernate mode |
| Group: microsoft.public.windows.tabletpc |
| Date: 8/12/2008 2:49:09 PM |
| From: "Rainald Taesler" [Email Address Protection] |
Beverly Howard [Ms-MVP/MobileDev] wrote: > Step one would be to get a computer with a solid state boot drive... Yes. AFAIK the hibernation always has to sit in the system's boot directory. > Historically this has been a disk partition which is dedicated to > storing ram, but don't know the specifics on what it has evolved to > in the current incarnations of windows. Ever since MS has implemented the hibernation feature in its OSs and the introduction of the ACPI standard (long after it had been introduced by COMPAQ for its portables) hibernation has been working with the "hiberfil.sys" sitting in the system's root. > In any case, I would guess that getting the computer to "hibernate > into" a different disk hardware location plus getting the wakeup to > restore from that non standard location would not be a trivial task. AFAICS impossible. But I have dropped this matter from the list of themes to watch. So it could be that I'm not really up-to-date. But I simply can't remember to have come across a Revision of the ACPI standards in so far. Rainald |
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| Subject: Re: Time to wake up from hibernate mode |
| Group: microsoft.public.windows.tabletpc |
| Date: 8/12/2008 4:50:35 PM |
| From: "Robert M. Lincoln" [Email Address Protection] |
I was planning to replace my boot drive with a solid state drive, not get an additional solid state drive. I see there is a 64GB IDE drive on NewEgg.com for $279. I think I'll try it and let people know how it works. |
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| Subject: Re: Time to wake up from hibernate mode |
| Group: microsoft.public.windows.tabletpc |
| Date: 8/12/2008 5:27:14 PM |
| From: "Rainald Taesler" [Email Address Protection] |
Robert M. Lincoln wrote: > I was planning to replace my boot drive with a solid state drive, > not get an additional solid state drive. > > I see there is a 64GB IDE drive on NewEgg.com for $279. I think > I'll try it and let people know how it works. Which OS are you working with? Depending on how much space you need for your data, you might need additional partitions, possibly on the standard HDD in your system. If you are running Vista, the necessary redirecting for the default directories *can* be done. But it's anything but trivial and affords knowledge and proper planning. Rainald |
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| Subject: Re: Time to wake up from hibernate mode |
| Group: microsoft.public.windows.tabletpc |
| Date: 8/12/2008 5:42:56 PM |
| From: "Robert M. Lincoln" [Email Address Protection] |
XP Pro Service Pak 3 I have plenty of free space on my current 60GB drive (around 25 GB). Why wouldn't the 64GB replacement solid state disk work? |
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| Subject: Re: Time to wake up from hibernate mode |
| Group: microsoft.public.windows.tabletpc |
| Date: 8/12/2008 7:43:05 PM |
| From: "Rainald Taesler" [Email Address Protection] |
Robert M. Lincoln schrieb: > XP Pro Service Pak 3 > > I have plenty of free space on my current 60GB drive (around 25 > GB). Why wouldn't the 64GB replacement solid state disk work? OK. I just couldn't see if there might have been masses of data. There is not too much space left on the 100GB HDD in my tc1100 :-( Rainald |
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| Subject: Re: Time to wake up from hibernate mode |
| Group: microsoft.public.windows.tabletpc |
| Date: 8/13/2008 9:59:54 AM |
| From: "Beverly Howard [Ms-MVP/MobileDev]" [Email Address Protection] |
Looking forward to what you find. Beverly Howard [MS MVP-Mobile Devices] |
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