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Virtual Memory settings

Forum Windows Vista : Configuration & Customize - Virtual Memory settings

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Pillager101   06-10-2008 at 05:58:07 AM

Hey guys.

Question for all ya,

I am running Vista 64 bit Ultimate SP1 with 6 GB of ram.
Would turning off Paging do anything for me besides saving space on the HDD?

Would Vista Run faster, or would i not notice any difference in speed and should just leave paging on?

For the most part this system is used for some gaming, browsing and watching videos.
It will be soon used for light SQL Server work.

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Scotteq   06-10-2008 at 02:08:05 PM
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I don't recommend turning the page file off - Applications still do look for it and get.... upset... if it's not there. Also, just because your computer has a 64 bit OS and 6GB of Memory doesn't mean that a given (32 bit) application knows how to use it all. These are generally programmed with a 2GB application space, since that is what XP/Vista 32 provide. So on an application level something may still be hitting the page file to swap data even though there is still more RAM available to be used.

So instead of turning it off, I recommend turning the page file down - I have mine at 512MB on 8GB of RAM.

------------------------------ Which Chip? Well, it depends on which set of thieving b@stardz you choose to support: The ones who use insider trading to enrich themselves while running their company into the ground, or the ones who illegally pay vendors to not support the first group.
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dengamle   06-10-2008 at 09:19:57 PM
- 0 +

scotteq, have you actually ever seen an application that refuses to run if there is enough ram, but just no paging file? (some apps might give a warning, but still runs just fine).

If the 2GB application space is filled up, that is it. If won't swap after that, because it is all filled up.

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Scotteq   06-10-2008 at 10:14:54 PM
- 0 +

It's not that the app doesn't run - Rather, if the app fills up the space it's programmed to use (2GB for many 32 bit apps), then it goes to the Page file to swap data in/out. If the page file is shut off, that can cause errors and crashes.

Apologies for not stating that more clearly.

------------------------------ Which Chip? Well, it depends on which set of thieving b@stardz you choose to support: The ones who use insider trading to enrich themselves while running their company into the ground, or the ones who illegally pay vendors to not support the first group.
 Reply to Scotteq
dengamle   06-10-2008 at 10:43:17 PM
- 0 +

That is not how it works. The 2GB is all it can address (or 3 or 4GB depending on OS and largeaddressaware).

 

A page in that address space can be backed up by physical ram or the paging file, but this is not something the app does, it is all internal to Windows. An app never goes out to the paging file by itself. Sure, it can check if there is configured a paging file in the system, but it cannot address it by itself.


Message edited by dengamle on 06-10-2008 at 10:43:48 PM
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dengamle   06-11-2008 at 12:55:59 AM
- 0 +

Some apps, like photoshop, can work with more than 2GB of data by copying data from its address space out to disk when necessary, to make space for new data. But this is some internal virtual memory management in the app and has nothing to do with Windows' paging file. In photoshop that is called the scratch disk.


Message edited by dengamle on 06-11-2008 at 12:57:11 AM
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loneeagle   06-12-2008 at 01:49:18 AM
- 0 +

The best thing to do is "try it".

1) I started to complete disable. Failed.
2) 128 MB. Better but ran into some problems.
3) I increased it until I finished at 512MB and then never crashed. It great.

Reply to loneeagle
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