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From: guy@auspex.auspex.com (Guy Harris)
Newsgroups: comp.arch
Subject: Re: Real disk FASTER than Ram disk
Message-ID: <3402@auspex.auspex.com>
Date: 29 May 90 16:22:36 GMT
Article-I.D.: auspex.3402
References: <641@sibyl.eleceng.ua.OZ> <136299@sun.Eng.Sun.COM> <1990May27.210935.8564@murdoch.acc.Virginia.EDU>
Organization: Auspex Systems, Santa Clara
Lines: 11

>#As a side note: check out Sun's tmpfs.  It's a variable sized ram disk that
>#doesn't do the extra copy.
>
>I can't find anything about it in the man pages. Is it available on
>4.0? 

No, it first showed up in 4.1.  It's more of a "RAM file system" than a
"RAM disk", as it plugs into the VFS interface.  It's also more of a
"RAM+swap space file system", as the data in the file system lives in
virtual memory, rather than physical memory, and can be paged out to
swap space.