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Adobe Photoshop Question ... primary scratch ... primary paging

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zherok:
Nah, you'll probably never notice it. I run PS:CS3 off a laptop with no issues. Only other hard drive is an external USB. Ain't using that for a page file.

Xyresic:
The Windows paging file is the file where Windows writes all the RAM whose processes aren't using. Basically is you have two programs which require a lot of RAM, it makes no sense to have both programs loaded onto RAM - either if you don't have enough RAM or some other case. Thus, there's this "Virtual RAM" - the paging file. So Program 1 would run off RAM, and program 2's information would be stored in the paging file. When you switch programs, the RAM and the paging file would swap - sometimes why it takes Windows a few seconds to switch to another application.

The Photoshop scratch file is basically the same thing, it stores information which don't need to be permanently kept. Such files include "History" of the document, so you can undo changes.

So if you do have another HDD, it would make sense to keep both on two different hard drives, but as mentioned, for causal usage it wouldn't really effect usage.

kostya:

--- Quote from: Xyresic on December 12, 2009, 08:09:16 PM ---The Windows paging file is the file where Windows writes all the RAM whose processes aren't using. Basically is you have two programs which require a lot of RAM, it makes no sense to have both programs loaded onto RAM - either if you don't have enough RAM or some other case. Thus, there's this "Virtual RAM" - the paging file. So Program 1 would run off RAM, and program 2's information would be stored in the paging file. When you switch programs, the RAM and the paging file would swap - sometimes why it takes Windows a few seconds to switch to another application.
--- End quote ---
If you want to get exact about it, you OS tries to predict what RAM is not going to be used soon (usually looking at what has not been used in a while) and store that in the page file if you start running short on RAM.

Lupin:

--- Quote from: Xyresic on December 12, 2009, 08:09:16 PM ---So if you do have another HDD, it would make sense to keep both on two different hard drives, but as mentioned, for causal usage it wouldn't really effect usage.

--- End quote ---
Placing the page file in another harddrive in the same IDE channel is the same as placing it in the same harddrive. While this may be moot now that most drives use the SATA interface, it's worth mentioning

Arc-sama:
Wow, I wasn't expecting more replies after the initial ones.

Thanks you very much Xyresic, Kostya & Lupin for all the info.

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