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- Path: sparky!uunet!cs.utexas.edu!zaphod.mps.ohio-state.edu!pacific.mps.ohio-state.edu!linac!att!news.cs.indiana.edu!umn.edu!lynx!triton.unm.edu!jfreter
- From: jfreter@triton.unm.edu (The Myth)
- Subject: Re: To RAM disk or not to RAM disk?
- Message-ID: <xzlnr8a@lynx.unm.edu>
- Date: Thu, 03 Sep 92 19:35:11 GMT
- Organization: University of New Mexico, Albuquerque
- References: <92247.31236.J056600@LMSC5.IS.LMSC.LOCKHEED.COM>
- Lines: 47
-
- In article <92247.31236.J056600@LMSC5.IS.LMSC.LOCKHEED.COM> J056600@LMSC5.IS.LMSC.LOCKHEED.COM writes:
- > I've heard a lot about using RAM disks and I'm confused. Perhaps a RAM
- >disk would be a fast swapfile or TEMP file, but doesn't that just take RAM
- >away from Windows if several apps are running? I have a 386DX-20 with 8 MB
- >on board. I could spare 2 MB as a RAM drive if it would help, but then I'd
- >have less memory for Windows, wouldn't I? I'm a bit confused. So, should I
- >use a RAM DRive or not? And why or why not?
- >
-
- Well, I'd only set aside 1 meg for a Ram Disk, and use one meg for a cache,
- then use the rest for windows.
-
- Reasons for using a small Ram drive:
- Windows creates temporary files whenever you want to print out a file.
- these files have to be written, the read back into memory to send to
- the printer. This will slow things down more than if the printjob
- were spooled to the disk. 1 meg is big enough for most smaller documents,
- but might not be big enough. If you use superstore, stacker, or any similar
- product, use it on the Ram Disk to effectively double its size (really does
- more than double, printer codes are highly compressible).
-
- Corel Draw also uses temporary files to store image information that gets
- swapped to the display. But these files are much larger, so 1 Meg certainly
- wouldn't be adaquate. It would need to be closer to 4 meg in size.
-
- If you run more than one application at a time, it would better to not use
- a RAM drive at all and give thehave of its memory over to windows and the
- other over to a cache.
-
- My recommendation is, depending on your computer use:
-
- mainly word processing and spread sheet use then use smartdrive (or other
- cache) with 2 Meg set aside for DOS/ 1 Meg for windows, use 1 meg for a
- RAM Disk, create a directory on that Ram Disk, then set the Temp env. var.
- to that dir.
-
- mainly database use no Ram Disk. Instead setup smartdrv with 2 Meg DOS,
- 1.5-2 Meg windows. Set temp to a dir on the hard drive.
-
- Either of these cases will leave you with ~6 Meg for windows to work with.
- Turn off virtual memory unless you get some out of memory erros. In this
- case, use a perm. one.
-
- The temporary files created by windows are not the same ones it uses for
- swapping/virtual memory, so there are no conflicts.
-
-
-