Read only ram disc.

William Bailey wb at
Tue Apr 20 08:32:47 PDT 2004

Hash: SHA1

Hi All,

	I am looking at ways to speed up file reads one a server thats running
FreeBSD 5.2.1 and was wondering if there is a way to setup some kind of
read only ram disc for a directory and its contents. What i want to do
is the following:

	1. Specify a directory (e.g. /usr/local/www/data)
	2. Specify the max size of the ram disc.
	3. If a read request for a files is issued then:
		a. Load the file into the ram disc if it dosent already exist.
		b. If it exists and the file on disc hasn't been updated then get the
contents from the ram disc. If the file has changed then do step a.
	4. If a write request for a file is issued then the request is made
directly on the disk and the file in the ram disc is removed or updated.

	Is there a way to do this? And would the read speed up be worth it (the
application is very read intensive)?

- --
	William Bailey.
	Pro-Net Internet Services Ltd.

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