[plug] Ram use

[John Breen]

It _sounds_ logical, but my understanding was that the RAMdisk would be
treated exactly like any other "disk" device, so that files would be read
into memory as normal.  The fact that they're being read from a RAMdrive
speeds up that part of the process, but other than that, it's just a normal
drive...

Please, someone correct me if I'm wrong :)

----- Original Message -----
From: "Brad Campbell" <brad at seme.com.au>
To: <plug at plug.linux.org.au>
Sent: Wednesday, March 14, 2001 12:57 PM
Subject: [plug] Ram use


> Here's one for those in the know..
> I have a small system. 386sx, 8meg ram no hd boot off floppy
> into a 4mb ramdisk, 2.2 kernel.
> Now, when linux loads a program it mmap()'s the whole file into
> ram, and only loads the required pages when they fault.
> In this case, all the files are already in ram, so they should
> not use any of my free ram by copying the data from the ramdisk
> to the free ram portion of memory. Correct?
> I understand copy on write, but as none of the programs/libs are
> being written to, they should not change.
>
> Sound reasonable ?
>
> --
> Brad....
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