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Use RAM disks for a VirtualPC speed gain
Authored by: larkost on Oct 06, '04 05:22:50PM

This hint is not going to speed up the operation of VPC (or any other application) at all. The only reason it seems to speed up things is because in the process of opening the ram-disk you cause everything to be loaded into memory already.

MacOS X's virtual memory system works like a ram-disk until you change something... it caches the reads from the disk, and until it needs that space in memory (with a complicated system for prioritizing things) it does not page it out to disk. People used ram-disks in MacOS 9 because this advanced system did not exist. It was a way of simulating it for special cases.

This hint simply shows that most people don't understand how the virtual memory system works on MacOS X.

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Use RAM disks for Shared Files
Authored by: swordbourne on Oct 21, '04 03:52:31PM

larkost doesn't know what he is talking about?

I'm using this for Bittorrent and my hard drive is no longer being accessed, but it is still uploading! This must be faster and help prevent wear and tear on my hard drive.

If Mac OS X was caching everything then I wouldn't have heard the hard drive all day while this file was being shared.

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